java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/product-lines/email_spec4_product31.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:15:37,551 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:15:37,554 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:15:37,568 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:15:37,568 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:15:37,569 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:15:37,571 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:15:37,572 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:15:37,574 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:15:37,575 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:15:37,576 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:15:37,577 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:15:37,577 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:15:37,578 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:15:37,579 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:15:37,581 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:15:37,581 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:15:37,582 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:15:37,584 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:15:37,586 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:15:37,588 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:15:37,589 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:15:37,590 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:15:37,591 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:15:37,594 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:15:37,594 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:15:37,594 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:15:37,595 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:15:37,595 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:15:37,597 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:15:37,597 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:15:37,598 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:15:37,598 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:15:37,599 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:15:37,600 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:15:37,601 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:15:37,601 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:15:37,601 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:15:37,602 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:15:37,603 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:15:37,603 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:15:37,604 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 01:15:37,623 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:15:37,624 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:15:37,625 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:15:37,625 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:15:37,625 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:15:37,626 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:15:37,626 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:15:37,626 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:15:37,626 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:15:37,626 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:15:37,627 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:15:37,627 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:15:37,627 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:15:37,627 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:15:37,627 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:15:37,628 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:15:37,628 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:15:37,628 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:15:37,628 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:15:37,628 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:15:37,629 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:15:37,629 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:15:37,629 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:15:37,629 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:15:37,629 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:15:37,630 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:15:37,630 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:15:37,630 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:15:37,630 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-15 01:15:37,907 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:15:37,931 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:15:37,935 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:15:37,937 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:15:37,937 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:15:37,938 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec4_product31.cil.c [2019-10-15 01:15:38,017 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ffe2e093e/afd9e89685cb487f900bd82f2e5eef25/FLAGdf57c7517 [2019-10-15 01:15:38,659 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:15:38,661 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec4_product31.cil.c [2019-10-15 01:15:38,684 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ffe2e093e/afd9e89685cb487f900bd82f2e5eef25/FLAGdf57c7517 [2019-10-15 01:15:38,878 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ffe2e093e/afd9e89685cb487f900bd82f2e5eef25 [2019-10-15 01:15:38,887 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:15:38,889 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:15:38,890 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:15:38,890 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:15:38,897 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:15:38,898 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:15:38" (1/1) ... [2019-10-15 01:15:38,903 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c6ea3f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:38, skipping insertion in model container [2019-10-15 01:15:38,904 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:15:38" (1/1) ... [2019-10-15 01:15:38,911 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:15:38,993 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:15:39,736 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:15:39,766 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:15:39,863 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:15:39,969 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:15:39,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:39 WrapperNode [2019-10-15 01:15:39,970 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:15:39,971 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:15:39,971 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:15:39,971 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:15:39,987 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:39" (1/1) ... [2019-10-15 01:15:39,987 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:39" (1/1) ... [2019-10-15 01:15:40,022 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:39" (1/1) ... [2019-10-15 01:15:40,022 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:39" (1/1) ... [2019-10-15 01:15:40,113 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:39" (1/1) ... [2019-10-15 01:15:40,160 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:39" (1/1) ... [2019-10-15 01:15:40,184 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:39" (1/1) ... [2019-10-15 01:15:40,200 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:15:40,201 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:15:40,201 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:15:40,201 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:15:40,203 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:39" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:15:40,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:15:40,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:15:40,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 01:15:40,274 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-15 01:15:40,274 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-15 01:15:40,274 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-15 01:15:40,274 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-15 01:15:40,275 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-15 01:15:40,275 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-15 01:15:40,275 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-15 01:15:40,275 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-15 01:15:40,276 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-15 01:15:40,276 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-15 01:15:40,276 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-15 01:15:40,276 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-15 01:15:40,277 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-15 01:15:40,277 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-15 01:15:40,277 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-15 01:15:40,277 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-15 01:15:40,277 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-15 01:15:40,278 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-15 01:15:40,278 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-15 01:15:40,278 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-15 01:15:40,279 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-15 01:15:40,279 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-15 01:15:40,279 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-15 01:15:40,279 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-15 01:15:40,279 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-15 01:15:40,279 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-15 01:15:40,279 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-15 01:15:40,280 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-15 01:15:40,280 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-15 01:15:40,280 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 01:15:40,280 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 01:15:40,280 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 01:15:40,280 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 01:15:40,281 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 01:15:40,281 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 01:15:40,281 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 01:15:40,281 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-15 01:15:40,281 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-15 01:15:40,281 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-15 01:15:40,281 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-15 01:15:40,282 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-15 01:15:40,282 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-15 01:15:40,282 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-15 01:15:40,282 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-15 01:15:40,282 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 01:15:40,282 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:15:40,283 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-15 01:15:40,283 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-15 01:15:40,283 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-15 01:15:40,283 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-15 01:15:40,283 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-15 01:15:40,283 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-15 01:15:40,283 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-15 01:15:40,284 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-15 01:15:40,284 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-15 01:15:40,284 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-10-15 01:15:40,284 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-15 01:15:40,284 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-15 01:15:40,284 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-15 01:15:40,285 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-15 01:15:40,285 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-15 01:15:40,285 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-15 01:15:40,285 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-15 01:15:40,285 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-15 01:15:40,285 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-15 01:15:40,285 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-15 01:15:40,286 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-15 01:15:40,286 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-15 01:15:40,286 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-15 01:15:40,286 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-15 01:15:40,286 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-15 01:15:40,286 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-15 01:15:40,286 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-15 01:15:40,287 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-15 01:15:40,287 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-15 01:15:40,287 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-15 01:15:40,287 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-15 01:15:40,287 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-15 01:15:40,287 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-15 01:15:40,288 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Encrypt [2019-10-15 01:15:40,288 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-15 01:15:40,288 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-15 01:15:40,288 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-15 01:15:40,288 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-10-15 01:15:40,288 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Verify [2019-10-15 01:15:40,289 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-15 01:15:40,289 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-15 01:15:40,289 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-15 01:15:40,289 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-15 01:15:40,289 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-15 01:15:40,289 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-15 01:15:40,289 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-15 01:15:40,290 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-15 01:15:40,290 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-15 01:15:40,290 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-15 01:15:40,290 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-10-15 01:15:40,290 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-15 01:15:40,290 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__SignForward_spec__1 [2019-10-15 01:15:40,291 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-15 01:15:40,291 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Encrypt [2019-10-15 01:15:40,291 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Forward [2019-10-15 01:15:40,291 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-15 01:15:40,291 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-15 01:15:40,291 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-15 01:15:40,291 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-15 01:15:40,292 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-15 01:15:40,292 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 01:15:40,292 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 01:15:40,292 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 01:15:40,292 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 01:15:40,292 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-15 01:15:40,292 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 01:15:40,293 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:15:40,293 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:15:40,293 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-15 01:15:40,293 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-15 01:15:40,293 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-15 01:15:40,293 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-15 01:15:40,294 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-15 01:15:40,294 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-15 01:15:40,294 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-15 01:15:40,294 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-15 01:15:40,294 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-15 01:15:40,294 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-15 01:15:40,295 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-15 01:15:40,295 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-15 01:15:40,295 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-15 01:15:40,295 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-15 01:15:40,295 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-15 01:15:40,295 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-15 01:15:40,296 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-15 01:15:40,296 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-15 01:15:40,296 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-15 01:15:40,296 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-15 01:15:40,296 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-15 01:15:40,296 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-15 01:15:40,296 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-15 01:15:40,297 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-15 01:15:40,297 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-15 01:15:40,297 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-15 01:15:40,297 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-15 01:15:40,297 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-15 01:15:40,297 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-15 01:15:40,298 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 01:15:40,298 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 01:15:40,298 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 01:15:40,298 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 01:15:40,298 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 01:15:40,298 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 01:15:40,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 01:15:40,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:15:40,299 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 01:15:40,299 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 01:15:40,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:15:40,299 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 01:15:40,299 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 01:15:40,299 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:15:40,300 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 01:15:40,300 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 01:15:40,300 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:15:40,300 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 01:15:40,300 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 01:15:40,300 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-15 01:15:40,300 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 01:15:40,301 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 01:15:40,301 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 01:15:40,301 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-15 01:15:40,301 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-15 01:15:40,301 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-15 01:15:40,301 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-15 01:15:40,301 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-15 01:15:40,301 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-15 01:15:40,302 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-15 01:15:40,302 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-15 01:15:40,302 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-15 01:15:40,302 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-15 01:15:40,302 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-15 01:15:40,302 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 01:15:40,302 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 01:15:40,303 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:15:40,303 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-15 01:15:40,303 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-15 01:15:40,303 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-15 01:15:40,303 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-15 01:15:40,303 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-15 01:15:40,303 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-15 01:15:40,304 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-15 01:15:40,304 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-15 01:15:40,304 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-15 01:15:40,304 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-10-15 01:15:40,304 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-15 01:15:40,304 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-15 01:15:40,304 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-15 01:15:40,305 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-15 01:15:40,305 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-15 01:15:40,305 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-15 01:15:40,305 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-15 01:15:40,305 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-15 01:15:40,305 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-15 01:15:40,305 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-15 01:15:40,306 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-15 01:15:40,306 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-15 01:15:40,306 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-15 01:15:40,306 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-15 01:15:40,306 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-15 01:15:40,306 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-15 01:15:40,307 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-15 01:15:40,307 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-15 01:15:40,307 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-15 01:15:40,307 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-15 01:15:40,307 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-15 01:15:40,308 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-15 01:15:40,308 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-15 01:15:40,308 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-15 01:15:40,308 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-15 01:15:40,308 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-15 01:15:40,308 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-15 01:15:40,309 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-15 01:15:40,309 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-15 01:15:40,309 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-15 01:15:40,309 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-15 01:15:40,309 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-15 01:15:40,309 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-15 01:15:40,310 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-15 01:15:40,310 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-10-15 01:15:40,310 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-15 01:15:40,310 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__SignForward_spec__1 [2019-10-15 01:15:40,310 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-15 01:15:40,310 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Encrypt [2019-10-15 01:15:40,311 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-15 01:15:40,311 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-10-15 01:15:40,311 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Verify [2019-10-15 01:15:40,311 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-15 01:15:40,311 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-15 01:15:40,311 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Encrypt [2019-10-15 01:15:40,311 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Forward [2019-10-15 01:15:40,312 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-15 01:15:40,312 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 01:15:40,312 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-15 01:15:40,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:15:40,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 01:15:40,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:15:42,459 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:15:42,459 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-15 01:15:42,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:15:42 BoogieIcfgContainer [2019-10-15 01:15:42,462 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:15:42,464 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:15:42,464 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:15:42,467 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:15:42,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:15:38" (1/3) ... [2019-10-15 01:15:42,468 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40ac730f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:15:42, skipping insertion in model container [2019-10-15 01:15:42,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:39" (2/3) ... [2019-10-15 01:15:42,469 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40ac730f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:15:42, skipping insertion in model container [2019-10-15 01:15:42,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:15:42" (3/3) ... [2019-10-15 01:15:42,471 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec4_product31.cil.c [2019-10-15 01:15:42,482 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:15:42,495 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:15:42,507 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:15:42,551 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:15:42,552 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:15:42,552 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:15:42,552 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:15:42,556 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:15:42,556 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:15:42,557 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:15:42,557 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:15:42,597 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states. [2019-10-15 01:15:42,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2019-10-15 01:15:42,633 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:42,634 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:15:42,636 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:42,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:42,643 INFO L82 PathProgramCache]: Analyzing trace with hash -908593919, now seen corresponding path program 1 times [2019-10-15 01:15:42,653 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:42,653 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703593286] [2019-10-15 01:15:42,654 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:42,654 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:42,654 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:42,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:43,309 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-15 01:15:43,310 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703593286] [2019-10-15 01:15:43,311 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:15:43,312 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 01:15:43,312 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032500167] [2019-10-15 01:15:43,317 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 01:15:43,319 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:43,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 01:15:43,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:15:43,337 INFO L87 Difference]: Start difference. First operand 558 states. Second operand 2 states. [2019-10-15 01:15:43,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:43,436 INFO L93 Difference]: Finished difference Result 858 states and 1126 transitions. [2019-10-15 01:15:43,437 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 01:15:43,439 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 164 [2019-10-15 01:15:43,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:43,476 INFO L225 Difference]: With dead ends: 858 [2019-10-15 01:15:43,477 INFO L226 Difference]: Without dead ends: 535 [2019-10-15 01:15:43,484 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:15:43,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2019-10-15 01:15:43,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 535. [2019-10-15 01:15:43,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 535 states. [2019-10-15 01:15:43,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 707 transitions. [2019-10-15 01:15:43,584 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 707 transitions. Word has length 164 [2019-10-15 01:15:43,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:43,587 INFO L462 AbstractCegarLoop]: Abstraction has 535 states and 707 transitions. [2019-10-15 01:15:43,587 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 01:15:43,587 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 707 transitions. [2019-10-15 01:15:43,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2019-10-15 01:15:43,593 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:43,593 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:15:43,593 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:43,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:43,594 INFO L82 PathProgramCache]: Analyzing trace with hash 644714031, now seen corresponding path program 1 times [2019-10-15 01:15:43,594 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:43,594 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006092953] [2019-10-15 01:15:43,595 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:43,595 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:43,595 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:43,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:43,921 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-15 01:15:43,922 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006092953] [2019-10-15 01:15:43,922 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:15:43,923 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:15:43,923 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921529534] [2019-10-15 01:15:43,929 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:15:43,930 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:43,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:15:43,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:15:43,932 INFO L87 Difference]: Start difference. First operand 535 states and 707 transitions. Second operand 3 states. [2019-10-15 01:15:44,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:44,015 INFO L93 Difference]: Finished difference Result 841 states and 1094 transitions. [2019-10-15 01:15:44,015 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:15:44,015 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 165 [2019-10-15 01:15:44,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:44,021 INFO L225 Difference]: With dead ends: 841 [2019-10-15 01:15:44,021 INFO L226 Difference]: Without dead ends: 538 [2019-10-15 01:15:44,024 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:15:44,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2019-10-15 01:15:44,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 537. [2019-10-15 01:15:44,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 537 states. [2019-10-15 01:15:44,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 709 transitions. [2019-10-15 01:15:44,063 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 709 transitions. Word has length 165 [2019-10-15 01:15:44,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:44,064 INFO L462 AbstractCegarLoop]: Abstraction has 537 states and 709 transitions. [2019-10-15 01:15:44,064 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:15:44,065 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 709 transitions. [2019-10-15 01:15:44,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2019-10-15 01:15:44,068 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:44,069 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:15:44,069 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:44,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:44,070 INFO L82 PathProgramCache]: Analyzing trace with hash -826054429, now seen corresponding path program 1 times [2019-10-15 01:15:44,070 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:44,070 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295717518] [2019-10-15 01:15:44,070 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:44,070 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:44,071 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:44,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:44,364 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-15 01:15:44,364 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295717518] [2019-10-15 01:15:44,364 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:15:44,365 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:15:44,365 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770031565] [2019-10-15 01:15:44,368 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:15:44,370 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:44,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:15:44,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:15:44,371 INFO L87 Difference]: Start difference. First operand 537 states and 709 transitions. Second operand 3 states. [2019-10-15 01:15:44,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:44,433 INFO L93 Difference]: Finished difference Result 1050 states and 1416 transitions. [2019-10-15 01:15:44,434 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:15:44,434 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 171 [2019-10-15 01:15:44,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:44,448 INFO L225 Difference]: With dead ends: 1050 [2019-10-15 01:15:44,449 INFO L226 Difference]: Without dead ends: 578 [2019-10-15 01:15:44,452 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:15:44,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2019-10-15 01:15:44,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 577. [2019-10-15 01:15:44,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 577 states. [2019-10-15 01:15:44,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 778 transitions. [2019-10-15 01:15:44,522 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 778 transitions. Word has length 171 [2019-10-15 01:15:44,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:44,523 INFO L462 AbstractCegarLoop]: Abstraction has 577 states and 778 transitions. [2019-10-15 01:15:44,523 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:15:44,524 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 778 transitions. [2019-10-15 01:15:44,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2019-10-15 01:15:44,533 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:44,534 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:15:44,534 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:44,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:44,539 INFO L82 PathProgramCache]: Analyzing trace with hash -290621353, now seen corresponding path program 1 times [2019-10-15 01:15:44,540 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:44,540 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969888238] [2019-10-15 01:15:44,540 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:44,541 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:44,541 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:44,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:44,904 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-15 01:15:44,907 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969888238] [2019-10-15 01:15:44,907 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:15:44,908 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 01:15:44,908 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845423185] [2019-10-15 01:15:44,908 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:15:44,909 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:44,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:15:44,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:15:44,909 INFO L87 Difference]: Start difference. First operand 577 states and 778 transitions. Second operand 7 states. [2019-10-15 01:15:48,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:48,295 INFO L93 Difference]: Finished difference Result 1175 states and 1544 transitions. [2019-10-15 01:15:48,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 01:15:48,295 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 172 [2019-10-15 01:15:48,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:48,302 INFO L225 Difference]: With dead ends: 1175 [2019-10-15 01:15:48,302 INFO L226 Difference]: Without dead ends: 883 [2019-10-15 01:15:48,304 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-10-15 01:15:48,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2019-10-15 01:15:48,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 874. [2019-10-15 01:15:48,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 874 states. [2019-10-15 01:15:48,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 874 states to 874 states and 1159 transitions. [2019-10-15 01:15:48,360 INFO L78 Accepts]: Start accepts. Automaton has 874 states and 1159 transitions. Word has length 172 [2019-10-15 01:15:48,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:48,361 INFO L462 AbstractCegarLoop]: Abstraction has 874 states and 1159 transitions. [2019-10-15 01:15:48,361 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:15:48,362 INFO L276 IsEmpty]: Start isEmpty. Operand 874 states and 1159 transitions. [2019-10-15 01:15:48,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2019-10-15 01:15:48,366 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:48,367 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:15:48,367 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:48,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:48,368 INFO L82 PathProgramCache]: Analyzing trace with hash 598384953, now seen corresponding path program 1 times [2019-10-15 01:15:48,368 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:48,368 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086704841] [2019-10-15 01:15:48,369 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:48,369 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:48,417 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:48,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:48,752 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-15 01:15:48,752 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086704841] [2019-10-15 01:15:48,752 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:15:48,752 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2019-10-15 01:15:48,753 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826145077] [2019-10-15 01:15:48,753 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-10-15 01:15:48,753 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:48,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-10-15 01:15:48,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2019-10-15 01:15:48,754 INFO L87 Difference]: Start difference. First operand 874 states and 1159 transitions. Second operand 18 states. [2019-10-15 01:15:49,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:49,205 INFO L93 Difference]: Finished difference Result 1541 states and 2026 transitions. [2019-10-15 01:15:49,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-10-15 01:15:49,206 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 173 [2019-10-15 01:15:49,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:49,216 INFO L225 Difference]: With dead ends: 1541 [2019-10-15 01:15:49,216 INFO L226 Difference]: Without dead ends: 924 [2019-10-15 01:15:49,221 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2019-10-15 01:15:49,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2019-10-15 01:15:49,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 920. [2019-10-15 01:15:49,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 920 states. [2019-10-15 01:15:49,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 920 states to 920 states and 1224 transitions. [2019-10-15 01:15:49,271 INFO L78 Accepts]: Start accepts. Automaton has 920 states and 1224 transitions. Word has length 173 [2019-10-15 01:15:49,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:49,272 INFO L462 AbstractCegarLoop]: Abstraction has 920 states and 1224 transitions. [2019-10-15 01:15:49,272 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-10-15 01:15:49,272 INFO L276 IsEmpty]: Start isEmpty. Operand 920 states and 1224 transitions. [2019-10-15 01:15:49,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2019-10-15 01:15:49,275 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:49,276 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:15:49,276 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:49,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:49,276 INFO L82 PathProgramCache]: Analyzing trace with hash 747428244, now seen corresponding path program 1 times [2019-10-15 01:15:49,277 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:49,277 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826185605] [2019-10-15 01:15:49,277 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:49,277 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:49,277 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:49,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:49,516 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-15 01:15:49,516 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826185605] [2019-10-15 01:15:49,516 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:15:49,516 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-15 01:15:49,517 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811415633] [2019-10-15 01:15:49,517 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-15 01:15:49,518 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:49,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-15 01:15:49,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:15:49,518 INFO L87 Difference]: Start difference. First operand 920 states and 1224 transitions. Second operand 8 states. [2019-10-15 01:15:50,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:50,560 INFO L93 Difference]: Finished difference Result 1747 states and 2309 transitions. [2019-10-15 01:15:50,563 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 01:15:50,564 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 182 [2019-10-15 01:15:50,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:50,578 INFO L225 Difference]: With dead ends: 1747 [2019-10-15 01:15:50,578 INFO L226 Difference]: Without dead ends: 1588 [2019-10-15 01:15:50,581 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2019-10-15 01:15:50,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1588 states. [2019-10-15 01:15:50,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1588 to 1575. [2019-10-15 01:15:50,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2019-10-15 01:15:50,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 2083 transitions. [2019-10-15 01:15:50,701 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 2083 transitions. Word has length 182 [2019-10-15 01:15:50,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:50,703 INFO L462 AbstractCegarLoop]: Abstraction has 1575 states and 2083 transitions. [2019-10-15 01:15:50,703 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-15 01:15:50,703 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 2083 transitions. [2019-10-15 01:15:50,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2019-10-15 01:15:50,707 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:50,708 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:15:50,708 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:50,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:50,708 INFO L82 PathProgramCache]: Analyzing trace with hash -1282001460, now seen corresponding path program 1 times [2019-10-15 01:15:50,709 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:50,709 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334124933] [2019-10-15 01:15:50,709 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:50,709 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:50,709 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:50,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:51,093 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-15 01:15:51,093 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334124933] [2019-10-15 01:15:51,094 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:15:51,094 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2019-10-15 01:15:51,094 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940191270] [2019-10-15 01:15:51,095 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-10-15 01:15:51,095 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:51,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-10-15 01:15:51,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2019-10-15 01:15:51,096 INFO L87 Difference]: Start difference. First operand 1575 states and 2083 transitions. Second operand 17 states. [2019-10-15 01:15:51,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:51,880 INFO L93 Difference]: Finished difference Result 2182 states and 2860 transitions. [2019-10-15 01:15:51,881 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-15 01:15:51,882 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 183 [2019-10-15 01:15:51,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:51,891 INFO L225 Difference]: With dead ends: 2182 [2019-10-15 01:15:51,891 INFO L226 Difference]: Without dead ends: 1574 [2019-10-15 01:15:51,895 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=101, Invalid=829, Unknown=0, NotChecked=0, Total=930 [2019-10-15 01:15:51,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1574 states. [2019-10-15 01:15:51,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1574 to 1573. [2019-10-15 01:15:51,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2019-10-15 01:15:51,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 2078 transitions. [2019-10-15 01:15:51,978 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 2078 transitions. Word has length 183 [2019-10-15 01:15:51,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:51,981 INFO L462 AbstractCegarLoop]: Abstraction has 1573 states and 2078 transitions. [2019-10-15 01:15:51,981 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-10-15 01:15:51,981 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 2078 transitions. [2019-10-15 01:15:51,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2019-10-15 01:15:51,988 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:51,988 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:15:51,989 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:51,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:51,989 INFO L82 PathProgramCache]: Analyzing trace with hash -287789140, now seen corresponding path program 2 times [2019-10-15 01:15:51,989 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:51,990 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967476561] [2019-10-15 01:15:51,990 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:51,990 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:51,990 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:52,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:52,232 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-15 01:15:52,232 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967476561] [2019-10-15 01:15:52,233 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974184025] [2019-10-15 01:15:52,233 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:52,793 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-10-15 01:15:52,793 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-15 01:15:52,803 INFO L256 TraceCheckSpWp]: Trace formula consists of 2032 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-15 01:15:52,841 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:15:53,051 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-15 01:15:53,052 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:15:53,546 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-15 01:15:53,547 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:15:53,547 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [11] total 23 [2019-10-15 01:15:53,547 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466684042] [2019-10-15 01:15:53,548 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-15 01:15:53,548 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:53,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-15 01:15:53,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2019-10-15 01:15:53,549 INFO L87 Difference]: Start difference. First operand 1573 states and 2078 transitions. Second operand 14 states. [2019-10-15 01:15:56,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:56,312 INFO L93 Difference]: Finished difference Result 4671 states and 6209 transitions. [2019-10-15 01:15:56,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-15 01:15:56,312 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 183 [2019-10-15 01:15:56,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:56,345 INFO L225 Difference]: With dead ends: 4671 [2019-10-15 01:15:56,345 INFO L226 Difference]: Without dead ends: 4664 [2019-10-15 01:15:56,349 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 360 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=178, Invalid=1228, Unknown=0, NotChecked=0, Total=1406 [2019-10-15 01:15:56,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4664 states. [2019-10-15 01:15:56,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4664 to 3351. [2019-10-15 01:15:56,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3351 states. [2019-10-15 01:15:56,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3351 states to 3351 states and 4504 transitions. [2019-10-15 01:15:56,600 INFO L78 Accepts]: Start accepts. Automaton has 3351 states and 4504 transitions. Word has length 183 [2019-10-15 01:15:56,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:56,601 INFO L462 AbstractCegarLoop]: Abstraction has 3351 states and 4504 transitions. [2019-10-15 01:15:56,601 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-15 01:15:56,601 INFO L276 IsEmpty]: Start isEmpty. Operand 3351 states and 4504 transitions. [2019-10-15 01:15:56,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2019-10-15 01:15:56,614 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:56,614 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:15:56,832 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:56,833 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:56,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:56,834 INFO L82 PathProgramCache]: Analyzing trace with hash 1144758085, now seen corresponding path program 1 times [2019-10-15 01:15:56,834 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:56,834 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447348394] [2019-10-15 01:15:56,835 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:56,835 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:56,835 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:56,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:57,024 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-15 01:15:57,025 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447348394] [2019-10-15 01:15:57,026 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1920253992] [2019-10-15 01:15:57,026 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:57,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:57,705 INFO L256 TraceCheckSpWp]: Trace formula consists of 2683 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:15:57,720 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:15:57,820 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-15 01:15:57,820 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:15:58,127 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:58,174 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:58,213 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-15 01:15:58,213 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:15:58,214 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 16 [2019-10-15 01:15:58,214 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625376084] [2019-10-15 01:15:58,215 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:15:58,215 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:58,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:15:58,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2019-10-15 01:15:58,216 INFO L87 Difference]: Start difference. First operand 3351 states and 4504 transitions. Second operand 7 states. [2019-10-15 01:15:59,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:59,631 INFO L93 Difference]: Finished difference Result 6675 states and 8979 transitions. [2019-10-15 01:15:59,632 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:15:59,632 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 186 [2019-10-15 01:15:59,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:59,654 INFO L225 Difference]: With dead ends: 6675 [2019-10-15 01:15:59,655 INFO L226 Difference]: Without dead ends: 3363 [2019-10-15 01:15:59,667 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 361 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2019-10-15 01:15:59,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3363 states. [2019-10-15 01:15:59,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3363 to 3353. [2019-10-15 01:15:59,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3353 states. [2019-10-15 01:15:59,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3353 states to 3353 states and 4507 transitions. [2019-10-15 01:15:59,971 INFO L78 Accepts]: Start accepts. Automaton has 3353 states and 4507 transitions. Word has length 186 [2019-10-15 01:15:59,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:59,973 INFO L462 AbstractCegarLoop]: Abstraction has 3353 states and 4507 transitions. [2019-10-15 01:15:59,973 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:15:59,973 INFO L276 IsEmpty]: Start isEmpty. Operand 3353 states and 4507 transitions. [2019-10-15 01:15:59,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2019-10-15 01:15:59,982 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:59,982 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:16:00,190 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:16:00,190 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:16:00,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:16:00,190 INFO L82 PathProgramCache]: Analyzing trace with hash -784397757, now seen corresponding path program 1 times [2019-10-15 01:16:00,191 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:16:00,191 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139293059] [2019-10-15 01:16:00,191 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:16:00,191 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:16:00,191 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:16:00,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:16:00,356 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-15 01:16:00,362 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139293059] [2019-10-15 01:16:00,363 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1458273874] [2019-10-15 01:16:00,363 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:16:00,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:16:00,953 INFO L256 TraceCheckSpWp]: Trace formula consists of 2681 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:16:00,961 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:16:01,107 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-15 01:16:01,107 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:16:01,461 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:16:01,537 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:16:01,600 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:16:01,691 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-15 01:16:01,691 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:16:01,691 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7, 9] total 20 [2019-10-15 01:16:01,691 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741009935] [2019-10-15 01:16:01,692 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 01:16:01,692 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:16:01,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 01:16:01,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2019-10-15 01:16:01,693 INFO L87 Difference]: Start difference. First operand 3353 states and 4507 transitions. Second operand 9 states. [2019-10-15 01:16:03,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:16:03,168 INFO L93 Difference]: Finished difference Result 6682 states and 8989 transitions. [2019-10-15 01:16:03,168 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-15 01:16:03,168 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 187 [2019-10-15 01:16:03,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:16:03,192 INFO L225 Difference]: With dead ends: 6682 [2019-10-15 01:16:03,192 INFO L226 Difference]: Without dead ends: 3371 [2019-10-15 01:16:03,206 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 358 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2019-10-15 01:16:03,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3371 states. [2019-10-15 01:16:03,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3371 to 3369. [2019-10-15 01:16:03,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3369 states. [2019-10-15 01:16:03,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3369 states to 3369 states and 4523 transitions. [2019-10-15 01:16:03,380 INFO L78 Accepts]: Start accepts. Automaton has 3369 states and 4523 transitions. Word has length 187 [2019-10-15 01:16:03,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:16:03,380 INFO L462 AbstractCegarLoop]: Abstraction has 3369 states and 4523 transitions. [2019-10-15 01:16:03,380 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 01:16:03,381 INFO L276 IsEmpty]: Start isEmpty. Operand 3369 states and 4523 transitions. [2019-10-15 01:16:03,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2019-10-15 01:16:03,389 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:16:03,389 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:16:03,596 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:16:03,597 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:16:03,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:16:03,597 INFO L82 PathProgramCache]: Analyzing trace with hash -1354189646, now seen corresponding path program 1 times [2019-10-15 01:16:03,598 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:16:03,598 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380674270] [2019-10-15 01:16:03,598 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:16:03,598 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:16:03,599 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:16:03,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:16:03,729 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-15 01:16:03,729 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380674270] [2019-10-15 01:16:03,730 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976522100] [2019-10-15 01:16:03,730 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:16:04,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:16:04,384 INFO L256 TraceCheckSpWp]: Trace formula consists of 2682 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:16:04,393 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:16:04,692 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-15 01:16:04,693 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:16:04,995 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:16:05,095 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:16:05,159 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:16:05,272 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-15 01:16:05,272 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:16:05,272 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [7] total 21 [2019-10-15 01:16:05,272 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690359652] [2019-10-15 01:16:05,273 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-15 01:16:05,274 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:16:05,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-15 01:16:05,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2019-10-15 01:16:05,274 INFO L87 Difference]: Start difference. First operand 3369 states and 4523 transitions. Second operand 16 states. [2019-10-15 01:16:07,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:16:07,076 INFO L93 Difference]: Finished difference Result 6674 states and 8970 transitions. [2019-10-15 01:16:07,076 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 01:16:07,076 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 188 [2019-10-15 01:16:07,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:16:07,097 INFO L225 Difference]: With dead ends: 6674 [2019-10-15 01:16:07,097 INFO L226 Difference]: Without dead ends: 3393 [2019-10-15 01:16:07,109 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 360 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2019-10-15 01:16:07,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3393 states. [2019-10-15 01:16:07,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3393 to 3391. [2019-10-15 01:16:07,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3391 states. [2019-10-15 01:16:07,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3391 states to 3391 states and 4548 transitions. [2019-10-15 01:16:07,270 INFO L78 Accepts]: Start accepts. Automaton has 3391 states and 4548 transitions. Word has length 188 [2019-10-15 01:16:07,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:16:07,270 INFO L462 AbstractCegarLoop]: Abstraction has 3391 states and 4548 transitions. [2019-10-15 01:16:07,270 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-15 01:16:07,271 INFO L276 IsEmpty]: Start isEmpty. Operand 3391 states and 4548 transitions. [2019-10-15 01:16:07,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2019-10-15 01:16:07,280 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:16:07,280 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:16:07,497 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:16:07,497 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:16:07,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:16:07,498 INFO L82 PathProgramCache]: Analyzing trace with hash -1965861263, now seen corresponding path program 2 times [2019-10-15 01:16:07,498 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:16:07,499 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440544673] [2019-10-15 01:16:07,499 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:16:07,499 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:16:07,499 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:16:07,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:16:07,698 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-15 01:16:07,698 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440544673] [2019-10-15 01:16:07,699 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367115358] [2019-10-15 01:16:07,699 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:16:08,494 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-10-15 01:16:08,495 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-15 01:16:08,508 INFO L256 TraceCheckSpWp]: Trace formula consists of 2578 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:16:08,515 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:16:08,639 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-15 01:16:08,639 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:16:08,878 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:16:08,918 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:16:08,976 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-15 01:16:08,976 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:16:08,976 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [7] total 16 [2019-10-15 01:16:08,977 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778211155] [2019-10-15 01:16:08,978 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-15 01:16:08,978 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:16:08,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-15 01:16:08,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2019-10-15 01:16:08,979 INFO L87 Difference]: Start difference. First operand 3391 states and 4548 transitions. Second operand 11 states. [2019-10-15 01:16:10,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:16:10,061 INFO L93 Difference]: Finished difference Result 6446 states and 8612 transitions. [2019-10-15 01:16:10,062 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 01:16:10,062 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 189 [2019-10-15 01:16:10,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:16:10,078 INFO L225 Difference]: With dead ends: 6446 [2019-10-15 01:16:10,078 INFO L226 Difference]: Without dead ends: 3179 [2019-10-15 01:16:10,090 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 368 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2019-10-15 01:16:10,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3179 states. [2019-10-15 01:16:10,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3179 to 3171. [2019-10-15 01:16:10,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3171 states. [2019-10-15 01:16:10,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3171 states to 3171 states and 4200 transitions. [2019-10-15 01:16:10,229 INFO L78 Accepts]: Start accepts. Automaton has 3171 states and 4200 transitions. Word has length 189 [2019-10-15 01:16:10,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:16:10,230 INFO L462 AbstractCegarLoop]: Abstraction has 3171 states and 4200 transitions. [2019-10-15 01:16:10,230 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-15 01:16:10,230 INFO L276 IsEmpty]: Start isEmpty. Operand 3171 states and 4200 transitions. [2019-10-15 01:16:10,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2019-10-15 01:16:10,238 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:16:10,238 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]