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_spec9_product14.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:17:54,298 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:17:54,301 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:17:54,319 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:17:54,319 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:17:54,321 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:17:54,322 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:17:54,324 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:17:54,325 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:17:54,326 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:17:54,327 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:17:54,329 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:17:54,329 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:17:54,330 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:17:54,331 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:17:54,332 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:17:54,333 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:17:54,334 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:17:54,336 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:17:54,338 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:17:54,342 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:17:54,345 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:17:54,348 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:17:54,349 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:17:54,351 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:17:54,351 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:17:54,352 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:17:54,352 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:17:54,353 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:17:54,354 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:17:54,354 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:17:54,355 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:17:54,356 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:17:54,356 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:17:54,357 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:17:54,358 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:17:54,358 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:17:54,359 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:17:54,359 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:17:54,360 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:17:54,361 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:17:54,362 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 01:17:54,385 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:17:54,385 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:17:54,387 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:17:54,387 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:17:54,387 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:17:54,388 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:17:54,388 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:17:54,388 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:17:54,388 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:17:54,389 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:17:54,390 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:17:54,390 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:17:54,390 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:17:54,390 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:17:54,391 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:17:54,391 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:17:54,391 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:17:54,391 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:17:54,392 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:17:54,392 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:17:54,392 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:17:54,392 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:17:54,393 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:17:54,393 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:17:54,393 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:17:54,393 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:17:54,393 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:17:54,393 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:17:54,394 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-15 01:17:54,674 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:17:54,687 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:17:54,690 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:17:54,695 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:17:54,695 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:17:54,698 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec9_product14.cil.c [2019-10-15 01:17:54,764 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab08a1eb9/707a537e6abe448b91d8822ef28630aa/FLAG215b52ed5 [2019-10-15 01:17:55,447 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:17:55,448 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec9_product14.cil.c [2019-10-15 01:17:55,487 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab08a1eb9/707a537e6abe448b91d8822ef28630aa/FLAG215b52ed5 [2019-10-15 01:17:55,671 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab08a1eb9/707a537e6abe448b91d8822ef28630aa [2019-10-15 01:17:55,681 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:17:55,682 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:17:55,683 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:17:55,683 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:17:55,686 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:17:55,687 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:17:55" (1/1) ... [2019-10-15 01:17:55,690 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4389964f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:17:55, skipping insertion in model container [2019-10-15 01:17:55,690 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:17:55" (1/1) ... [2019-10-15 01:17:55,698 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:17:55,778 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:17:56,568 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:17:56,586 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:17:56,759 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:17:56,854 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:17:56,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:17:56 WrapperNode [2019-10-15 01:17:56,855 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:17:56,856 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:17:56,856 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:17:56,856 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:17:56,871 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:17:56" (1/1) ... [2019-10-15 01:17:56,871 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:17:56" (1/1) ... [2019-10-15 01:17:56,903 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:17:56" (1/1) ... [2019-10-15 01:17:56,903 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:17:56" (1/1) ... [2019-10-15 01:17:56,961 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:17:56" (1/1) ... [2019-10-15 01:17:56,991 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:17:56" (1/1) ... [2019-10-15 01:17:57,017 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:17:56" (1/1) ... [2019-10-15 01:17:57,039 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:17:57,043 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:17:57,043 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:17:57,043 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:17:57,045 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:17:56" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:17:57,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:17:57,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:17:57,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 01:17:57,136 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-15 01:17:57,136 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-15 01:17:57,137 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-15 01:17:57,138 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-15 01:17:57,138 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-15 01:17:57,138 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-15 01:17:57,139 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-15 01:17:57,139 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-15 01:17:57,139 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 01:17:57,140 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:17:57,140 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-15 01:17:57,141 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-15 01:17:57,141 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-15 01:17:57,143 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-15 01:17:57,144 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-15 01:17:57,144 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-15 01:17:57,144 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-15 01:17:57,144 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-15 01:17:57,145 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-15 01:17:57,145 INFO L138 BoogieDeclarations]: Found implementation of procedure bobSetAddressBook [2019-10-15 01:17:57,145 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptForward_spec__1 [2019-10-15 01:17:57,146 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptForward_spec__2 [2019-10-15 01:17:57,146 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 01:17:57,146 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-15 01:17:57,146 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-15 01:17:57,147 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Encrypt [2019-10-15 01:17:57,147 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-15 01:17:57,148 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-15 01:17:57,149 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__AddressBook [2019-10-15 01:17:57,149 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-15 01:17:57,149 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-15 01:17:57,149 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-15 01:17:57,149 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-15 01:17:57,150 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-15 01:17:57,150 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-15 01:17:57,150 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-15 01:17:57,150 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-15 01:17:57,151 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-15 01:17:57,151 INFO L138 BoogieDeclarations]: Found implementation of procedure sendToAddressBook [2019-10-15 01:17:57,151 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 01:17:57,151 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 01:17:57,151 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 01:17:57,152 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 01:17:57,152 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 01:17:57,152 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-15 01:17:57,152 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 01:17:57,152 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 01:17:57,152 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 01:17:57,153 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 01:17:57,153 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 01:17:57,153 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 01:17:57,153 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-15 01:17:57,153 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-15 01:17:57,153 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-15 01:17:57,154 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-15 01:17:57,154 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-15 01:17:57,154 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-15 01:17:57,154 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-15 01:17:57,154 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-15 01:17:57,155 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-15 01:17:57,155 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-15 01:17:57,155 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-15 01:17:57,156 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-15 01:17:57,156 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-15 01:17:57,156 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-15 01:17:57,156 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-15 01:17:57,157 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-15 01:17:57,157 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-15 01:17:57,157 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-15 01:17:57,157 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-15 01:17:57,158 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-15 01:17:57,158 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-15 01:17:57,158 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-15 01:17:57,158 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-15 01:17:57,159 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-15 01:17:57,159 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-15 01:17:57,159 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-15 01:17:57,160 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-15 01:17:57,160 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-15 01:17:57,160 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-15 01:17:57,160 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-15 01:17:57,161 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-15 01:17:57,161 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-15 01:17:57,161 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-15 01:17:57,162 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-15 01:17:57,162 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-15 01:17:57,162 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-15 01:17:57,163 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-15 01:17:57,163 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-15 01:17:57,163 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-15 01:17:57,163 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-15 01:17:57,163 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-15 01:17:57,163 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-15 01:17:57,164 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-15 01:17:57,164 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-15 01:17:57,164 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-15 01:17:57,164 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-15 01:17:57,164 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-15 01:17:57,164 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-15 01:17:57,165 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-15 01:17:57,165 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-15 01:17:57,165 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-15 01:17:57,165 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-15 01:17:57,165 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-15 01:17:57,165 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-15 01:17:57,166 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-15 01:17:57,166 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-15 01:17:57,166 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:17:57,166 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:17:57,166 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 01:17:57,166 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-15 01:17:57,166 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-15 01:17:57,167 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-15 01:17:57,167 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-15 01:17:57,167 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-15 01:17:57,167 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-15 01:17:57,167 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-15 01:17:57,168 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-15 01:17:57,168 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-15 01:17:57,168 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-15 01:17:57,168 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-15 01:17:57,170 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 01:17:57,170 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 01:17:57,170 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 01:17:57,170 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-15 01:17:57,170 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-15 01:17:57,170 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-15 01:17:57,171 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-15 01:17:57,171 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-15 01:17:57,171 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-15 01:17:57,171 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-15 01:17:57,172 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-15 01:17:57,172 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-15 01:17:57,173 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-15 01:17:57,176 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-15 01:17:57,176 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 01:17:57,176 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 01:17:57,177 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:17:57,177 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-15 01:17:57,177 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-15 01:17:57,178 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-15 01:17:57,184 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-15 01:17:57,184 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-15 01:17:57,184 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-15 01:17:57,184 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-15 01:17:57,185 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-15 01:17:57,185 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-15 01:17:57,185 INFO L130 BoogieDeclarations]: Found specification of procedure bobSetAddressBook [2019-10-15 01:17:57,185 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-15 01:17:57,186 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-15 01:17:57,186 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-15 01:17:57,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:17:57,187 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 01:17:57,187 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-15 01:17:57,187 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptForward_spec__1 [2019-10-15 01:17:57,187 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptForward_spec__2 [2019-10-15 01:17:57,187 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-15 01:17:57,187 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-15 01:17:57,188 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-15 01:17:57,188 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-15 01:17:57,188 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-15 01:17:57,188 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-15 01:17:57,188 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-15 01:17:57,188 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-15 01:17:57,188 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-15 01:17:57,188 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-15 01:17:57,189 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-15 01:17:57,189 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-15 01:17:57,189 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-15 01:17:57,189 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-15 01:17:57,189 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-15 01:17:57,189 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-15 01:17:57,189 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-15 01:17:57,189 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-15 01:17:57,189 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-15 01:17:57,190 INFO L130 BoogieDeclarations]: Found specification of procedure sendToAddressBook [2019-10-15 01:17:57,190 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-15 01:17:57,190 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Encrypt [2019-10-15 01:17:57,190 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__AddressBook [2019-10-15 01:17:57,190 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 01:17:57,190 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-15 01:17:57,190 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 01:17:57,190 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 01:17:57,191 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 01:17:57,191 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 01:17:57,191 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 01:17:57,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 01:17:57,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:17:57,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 01:17:57,191 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 01:17:57,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:17:57,192 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 01:17:57,192 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 01:17:57,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:17:57,192 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 01:17:57,192 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 01:17:57,192 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 01:17:57,192 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-15 01:17:57,192 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-15 01:17:57,193 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-15 01:17:57,193 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-15 01:17:57,193 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-15 01:17:57,193 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-15 01:17:57,193 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-15 01:17:57,193 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-15 01:17:57,193 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-15 01:17:57,193 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-15 01:17:57,194 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-15 01:17:57,194 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-15 01:17:57,194 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-15 01:17:57,194 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-15 01:17:57,194 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-15 01:17:57,194 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-15 01:17:57,194 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-15 01:17:57,194 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-15 01:17:57,195 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-15 01:17:57,195 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-15 01:17:57,195 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-15 01:17:57,195 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-15 01:17:57,195 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-15 01:17:57,195 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-15 01:17:57,195 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-15 01:17:57,195 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-15 01:17:57,196 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-15 01:17:57,196 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-15 01:17:57,196 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-15 01:17:57,196 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-15 01:17:57,196 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-15 01:17:57,196 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-15 01:17:57,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:17:57,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 01:17:57,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:17:59,295 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:17:59,296 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-15 01:17:59,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:17:59 BoogieIcfgContainer [2019-10-15 01:17:59,298 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:17:59,299 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:17:59,299 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:17:59,302 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:17:59,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:17:55" (1/3) ... [2019-10-15 01:17:59,303 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57689c24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:17:59, skipping insertion in model container [2019-10-15 01:17:59,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:17:56" (2/3) ... [2019-10-15 01:17:59,304 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57689c24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:17:59, skipping insertion in model container [2019-10-15 01:17:59,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:17:59" (3/3) ... [2019-10-15 01:17:59,306 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec9_product14.cil.c [2019-10-15 01:17:59,316 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:17:59,329 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:17:59,341 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:17:59,390 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:17:59,390 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:17:59,391 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:17:59,391 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:17:59,391 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:17:59,391 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:17:59,391 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:17:59,391 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:17:59,433 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states. [2019-10-15 01:17:59,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2019-10-15 01:17:59,468 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:17:59,469 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:17:59,472 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:17:59,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:17:59,482 INFO L82 PathProgramCache]: Analyzing trace with hash 2026641383, now seen corresponding path program 1 times [2019-10-15 01:17:59,492 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:17:59,493 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105344847] [2019-10-15 01:17:59,493 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:59,493 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:59,493 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:17:59,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:00,182 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 01:18:00,183 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105344847] [2019-10-15 01:18:00,185 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:18:00,185 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 01:18:00,186 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724233710] [2019-10-15 01:18:00,197 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 01:18:00,199 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:18:00,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 01:18:00,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:18:00,218 INFO L87 Difference]: Start difference. First operand 521 states. Second operand 2 states. [2019-10-15 01:18:00,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:18:00,330 INFO L93 Difference]: Finished difference Result 695 states and 958 transitions. [2019-10-15 01:18:00,330 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 01:18:00,332 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 154 [2019-10-15 01:18:00,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:18:00,379 INFO L225 Difference]: With dead ends: 695 [2019-10-15 01:18:00,380 INFO L226 Difference]: Without dead ends: 470 [2019-10-15 01:18:00,391 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 01:18:00,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2019-10-15 01:18:00,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 470. [2019-10-15 01:18:00,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 470 states. [2019-10-15 01:18:00,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 651 transitions. [2019-10-15 01:18:00,543 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 651 transitions. Word has length 154 [2019-10-15 01:18:00,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:18:00,546 INFO L462 AbstractCegarLoop]: Abstraction has 470 states and 651 transitions. [2019-10-15 01:18:00,547 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 01:18:00,547 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 651 transitions. [2019-10-15 01:18:00,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2019-10-15 01:18:00,558 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:18:00,559 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:18:00,559 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:18:00,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:18:00,560 INFO L82 PathProgramCache]: Analyzing trace with hash 918383061, now seen corresponding path program 1 times [2019-10-15 01:18:00,561 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:18:00,561 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113364614] [2019-10-15 01:18:00,561 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:00,561 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:00,561 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:18:00,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:00,887 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 01:18:00,887 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113364614] [2019-10-15 01:18:00,888 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:18:00,888 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:18:00,888 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951211124] [2019-10-15 01:18:00,896 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:18:00,896 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:18:00,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:18:00,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:18:00,897 INFO L87 Difference]: Start difference. First operand 470 states and 651 transitions. Second operand 3 states. [2019-10-15 01:18:00,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:18:00,965 INFO L93 Difference]: Finished difference Result 678 states and 924 transitions. [2019-10-15 01:18:00,965 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:18:00,965 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 155 [2019-10-15 01:18:00,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:18:00,972 INFO L225 Difference]: With dead ends: 678 [2019-10-15 01:18:00,972 INFO L226 Difference]: Without dead ends: 473 [2019-10-15 01:18:00,975 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 01:18:00,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2019-10-15 01:18:01,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 472. [2019-10-15 01:18:01,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 472 states. [2019-10-15 01:18:01,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 653 transitions. [2019-10-15 01:18:01,014 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 653 transitions. Word has length 155 [2019-10-15 01:18:01,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:18:01,015 INFO L462 AbstractCegarLoop]: Abstraction has 472 states and 653 transitions. [2019-10-15 01:18:01,015 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:18:01,016 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 653 transitions. [2019-10-15 01:18:01,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2019-10-15 01:18:01,022 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:18:01,022 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:18:01,022 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:18:01,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:18:01,023 INFO L82 PathProgramCache]: Analyzing trace with hash 1716493705, now seen corresponding path program 1 times [2019-10-15 01:18:01,023 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:18:01,023 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316122214] [2019-10-15 01:18:01,024 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:01,024 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:01,024 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:18:01,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:01,270 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 01:18:01,271 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316122214] [2019-10-15 01:18:01,271 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:18:01,271 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:18:01,271 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399330927] [2019-10-15 01:18:01,273 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:18:01,276 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:18:01,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:18:01,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:18:01,277 INFO L87 Difference]: Start difference. First operand 472 states and 653 transitions. Second operand 3 states. [2019-10-15 01:18:01,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:18:01,326 INFO L93 Difference]: Finished difference Result 920 states and 1304 transitions. [2019-10-15 01:18:01,327 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:18:01,327 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 161 [2019-10-15 01:18:01,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:18:01,332 INFO L225 Difference]: With dead ends: 920 [2019-10-15 01:18:01,333 INFO L226 Difference]: Without dead ends: 513 [2019-10-15 01:18:01,335 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 01:18:01,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2019-10-15 01:18:01,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 512. [2019-10-15 01:18:01,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 512 states. [2019-10-15 01:18:01,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 722 transitions. [2019-10-15 01:18:01,366 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 722 transitions. Word has length 161 [2019-10-15 01:18:01,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:18:01,366 INFO L462 AbstractCegarLoop]: Abstraction has 512 states and 722 transitions. [2019-10-15 01:18:01,366 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:18:01,367 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 722 transitions. [2019-10-15 01:18:01,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2019-10-15 01:18:01,370 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:18:01,371 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:18:01,371 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:18:01,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:18:01,371 INFO L82 PathProgramCache]: Analyzing trace with hash 121065149, now seen corresponding path program 1 times [2019-10-15 01:18:01,372 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:18:01,372 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373587573] [2019-10-15 01:18:01,372 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:01,372 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:01,372 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:18:01,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:01,597 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-15 01:18:01,597 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373587573] [2019-10-15 01:18:01,598 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:18:01,598 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:18:01,598 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100033308] [2019-10-15 01:18:01,599 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:18:01,599 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:18:01,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:18:01,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:18:01,599 INFO L87 Difference]: Start difference. First operand 512 states and 722 transitions. Second operand 3 states. [2019-10-15 01:18:01,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:18:01,644 INFO L93 Difference]: Finished difference Result 818 states and 1146 transitions. [2019-10-15 01:18:01,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:18:01,645 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 162 [2019-10-15 01:18:01,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:18:01,649 INFO L225 Difference]: With dead ends: 818 [2019-10-15 01:18:01,649 INFO L226 Difference]: Without dead ends: 626 [2019-10-15 01:18:01,651 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:18:01,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2019-10-15 01:18:01,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 625. [2019-10-15 01:18:01,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 625 states. [2019-10-15 01:18:01,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 884 transitions. [2019-10-15 01:18:01,677 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 884 transitions. Word has length 162 [2019-10-15 01:18:01,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:18:01,678 INFO L462 AbstractCegarLoop]: Abstraction has 625 states and 884 transitions. [2019-10-15 01:18:01,678 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:18:01,678 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 884 transitions. [2019-10-15 01:18:01,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2019-10-15 01:18:01,684 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:18:01,684 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:18:01,685 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:18:01,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:18:01,685 INFO L82 PathProgramCache]: Analyzing trace with hash 1610932169, now seen corresponding path program 1 times [2019-10-15 01:18:01,685 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:18:01,685 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982045913] [2019-10-15 01:18:01,686 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:01,686 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:01,686 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:18:01,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:02,044 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-10-15 01:18:02,045 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982045913] [2019-10-15 01:18:02,045 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:18:02,045 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:18:02,046 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143923297] [2019-10-15 01:18:02,047 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:18:02,047 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:18:02,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:18:02,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:18:02,049 INFO L87 Difference]: Start difference. First operand 625 states and 884 transitions. Second operand 6 states. [2019-10-15 01:18:02,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:18:02,776 INFO L93 Difference]: Finished difference Result 1495 states and 2116 transitions. [2019-10-15 01:18:02,776 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-15 01:18:02,777 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 275 [2019-10-15 01:18:02,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:18:02,786 INFO L225 Difference]: With dead ends: 1495 [2019-10-15 01:18:02,787 INFO L226 Difference]: Without dead ends: 1201 [2019-10-15 01:18:02,789 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-10-15 01:18:02,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1201 states. [2019-10-15 01:18:02,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1201 to 1190. [2019-10-15 01:18:02,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1190 states. [2019-10-15 01:18:02,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1190 states to 1190 states and 1704 transitions. [2019-10-15 01:18:02,884 INFO L78 Accepts]: Start accepts. Automaton has 1190 states and 1704 transitions. Word has length 275 [2019-10-15 01:18:02,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:18:02,885 INFO L462 AbstractCegarLoop]: Abstraction has 1190 states and 1704 transitions. [2019-10-15 01:18:02,885 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:18:02,885 INFO L276 IsEmpty]: Start isEmpty. Operand 1190 states and 1704 transitions. [2019-10-15 01:18:02,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2019-10-15 01:18:02,892 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:18:02,893 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:18:02,893 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:18:02,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:18:02,894 INFO L82 PathProgramCache]: Analyzing trace with hash -1309125253, now seen corresponding path program 1 times [2019-10-15 01:18:02,894 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:18:02,894 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24569434] [2019-10-15 01:18:02,894 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:02,894 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:02,894 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:18:02,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:03,132 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-10-15 01:18:03,133 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24569434] [2019-10-15 01:18:03,133 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:18:03,134 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-15 01:18:03,134 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900322260] [2019-10-15 01:18:03,135 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 01:18:03,135 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:18:03,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 01:18:03,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-10-15 01:18:03,135 INFO L87 Difference]: Start difference. First operand 1190 states and 1704 transitions. Second operand 9 states. [2019-10-15 01:18:03,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:18:03,492 INFO L93 Difference]: Finished difference Result 1775 states and 2491 transitions. [2019-10-15 01:18:03,492 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-15 01:18:03,492 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 276 [2019-10-15 01:18:03,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:18:03,499 INFO L225 Difference]: With dead ends: 1775 [2019-10-15 01:18:03,500 INFO L226 Difference]: Without dead ends: 1164 [2019-10-15 01:18:03,503 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2019-10-15 01:18:03,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1164 states. [2019-10-15 01:18:03,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1164 to 1160. [2019-10-15 01:18:03,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1160 states. [2019-10-15 01:18:03,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1160 states to 1160 states and 1653 transitions. [2019-10-15 01:18:03,564 INFO L78 Accepts]: Start accepts. Automaton has 1160 states and 1653 transitions. Word has length 276 [2019-10-15 01:18:03,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:18:03,564 INFO L462 AbstractCegarLoop]: Abstraction has 1160 states and 1653 transitions. [2019-10-15 01:18:03,565 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 01:18:03,565 INFO L276 IsEmpty]: Start isEmpty. Operand 1160 states and 1653 transitions. [2019-10-15 01:18:03,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2019-10-15 01:18:03,574 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:18:03,575 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:18:03,575 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:18:03,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:18:03,575 INFO L82 PathProgramCache]: Analyzing trace with hash -866990585, now seen corresponding path program 1 times [2019-10-15 01:18:03,576 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:18:03,576 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641363557] [2019-10-15 01:18:03,576 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:03,576 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:03,576 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:18:03,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:04,149 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2019-10-15 01:18:04,150 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641363557] [2019-10-15 01:18:04,150 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1618765501] [2019-10-15 01:18:04,151 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:18:04,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:04,969 INFO L256 TraceCheckSpWp]: Trace formula consists of 2991 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:18:04,991 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:18:05,347 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2019-10-15 01:18:05,348 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:18:05,990 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:18:06,156 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:18:06,248 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:18:06,401 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-10-15 01:18:06,402 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:18:06,402 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [21, 9] total 34 [2019-10-15 01:18:06,402 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252278458] [2019-10-15 01:18:06,403 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 01:18:06,403 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:18:06,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 01:18:06,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=1034, Unknown=0, NotChecked=0, Total=1122 [2019-10-15 01:18:06,404 INFO L87 Difference]: Start difference. First operand 1160 states and 1653 transitions. Second operand 9 states. [2019-10-15 01:18:08,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:18:08,511 INFO L93 Difference]: Finished difference Result 2298 states and 3286 transitions. [2019-10-15 01:18:08,514 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-15 01:18:08,514 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 269 [2019-10-15 01:18:08,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:18:08,523 INFO L225 Difference]: With dead ends: 2298 [2019-10-15 01:18:08,523 INFO L226 Difference]: Without dead ends: 1174 [2019-10-15 01:18:08,531 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 564 GetRequests, 525 SyntacticMatches, 4 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=109, Invalid=1223, Unknown=0, NotChecked=0, Total=1332 [2019-10-15 01:18:08,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1174 states. [2019-10-15 01:18:08,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1174 to 1174. [2019-10-15 01:18:08,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1174 states. [2019-10-15 01:18:08,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1174 states to 1174 states and 1671 transitions. [2019-10-15 01:18:08,648 INFO L78 Accepts]: Start accepts. Automaton has 1174 states and 1671 transitions. Word has length 269 [2019-10-15 01:18:08,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:18:08,648 INFO L462 AbstractCegarLoop]: Abstraction has 1174 states and 1671 transitions. [2019-10-15 01:18:08,648 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 01:18:08,648 INFO L276 IsEmpty]: Start isEmpty. Operand 1174 states and 1671 transitions. [2019-10-15 01:18:08,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2019-10-15 01:18:08,656 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:18:08,657 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:18:08,865 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:18:08,865 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:18:08,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:18:08,865 INFO L82 PathProgramCache]: Analyzing trace with hash 1787642265, now seen corresponding path program 1 times [2019-10-15 01:18:08,866 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:18:08,866 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617606623] [2019-10-15 01:18:08,866 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:08,866 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:08,866 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:18:08,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:09,492 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2019-10-15 01:18:09,492 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617606623] [2019-10-15 01:18:09,492 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953728099] [2019-10-15 01:18:09,493 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 01:18:10,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:10,268 INFO L256 TraceCheckSpWp]: Trace formula consists of 2992 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:18:10,286 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:18:10,542 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2019-10-15 01:18:10,543 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:18:11,013 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:18:11,088 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:18:11,152 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-10-15 01:18:11,153 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:18:11,153 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [21, 7] total 30 [2019-10-15 01:18:11,153 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870046879] [2019-10-15 01:18:11,154 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:18:11,154 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:18:11,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:18:11,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=796, Unknown=0, NotChecked=0, Total=870 [2019-10-15 01:18:11,156 INFO L87 Difference]: Start difference. First operand 1174 states and 1671 transitions. Second operand 7 states. [2019-10-15 01:18:12,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:18:12,148 INFO L93 Difference]: Finished difference Result 2301 states and 3295 transitions. [2019-10-15 01:18:12,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:18:12,149 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 270 [2019-10-15 01:18:12,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:18:12,157 INFO L225 Difference]: With dead ends: 2301 [2019-10-15 01:18:12,157 INFO L226 Difference]: Without dead ends: 1178 [2019-10-15 01:18:12,162 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 565 GetRequests, 532 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=88, Invalid=904, Unknown=0, NotChecked=0, Total=992 [2019-10-15 01:18:12,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1178 states. [2019-10-15 01:18:12,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1178 to 1178. [2019-10-15 01:18:12,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1178 states. [2019-10-15 01:18:12,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1178 states to 1178 states and 1676 transitions. [2019-10-15 01:18:12,255 INFO L78 Accepts]: Start accepts. Automaton has 1178 states and 1676 transitions. Word has length 270 [2019-10-15 01:18:12,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:18:12,256 INFO L462 AbstractCegarLoop]: Abstraction has 1178 states and 1676 transitions. [2019-10-15 01:18:12,256 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:18:12,256 INFO L276 IsEmpty]: Start isEmpty. Operand 1178 states and 1676 transitions. [2019-10-15 01:18:12,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2019-10-15 01:18:12,264 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:18:12,265 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:18:12,474 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:18:12,475 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:18:12,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:18:12,475 INFO L82 PathProgramCache]: Analyzing trace with hash -317122592, now seen corresponding path program 1 times [2019-10-15 01:18:12,475 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:18:12,476 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396924259] [2019-10-15 01:18:12,476 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:12,476 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:12,476 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:18:12,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:13,254 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2019-10-15 01:18:13,254 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396924259] [2019-10-15 01:18:13,255 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800131771] [2019-10-15 01:18:13,255 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 01:18:13,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:13,854 INFO L256 TraceCheckSpWp]: Trace formula consists of 2993 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:18:13,863 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:18:14,155 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-10-15 01:18:14,156 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:18:14,803 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:18:14,885 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:18:14,979 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:18:15,139 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-10-15 01:18:15,139 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:18:15,139 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [21] total 35 [2019-10-15 01:18:15,140 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453585592] [2019-10-15 01:18:15,141 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-15 01:18:15,141 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:18:15,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-15 01:18:15,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=1093, Unknown=0, NotChecked=0, Total=1190 [2019-10-15 01:18:15,142 INFO L87 Difference]: Start difference. First operand 1178 states and 1676 transitions. Second operand 16 states. [2019-10-15 01:18:16,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:18:16,826 INFO L93 Difference]: Finished difference Result 2307 states and 3294 transitions. [2019-10-15 01:18:16,826 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 01:18:16,827 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 271 [2019-10-15 01:18:16,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:18:16,835 INFO L225 Difference]: With dead ends: 2307 [2019-10-15 01:18:16,835 INFO L226 Difference]: Without dead ends: 1190 [2019-10-15 01:18:16,840 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 569 GetRequests, 529 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=129, Invalid=1353, Unknown=0, NotChecked=0, Total=1482 [2019-10-15 01:18:16,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1190 states. [2019-10-15 01:18:16,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1190 to 1188. [2019-10-15 01:18:16,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1188 states. [2019-10-15 01:18:16,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1188 states to 1188 states and 1687 transitions. [2019-10-15 01:18:16,901 INFO L78 Accepts]: Start accepts. Automaton has 1188 states and 1687 transitions. Word has length 271 [2019-10-15 01:18:16,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:18:16,901 INFO L462 AbstractCegarLoop]: Abstraction has 1188 states and 1687 transitions. [2019-10-15 01:18:16,901 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-15 01:18:16,901 INFO L276 IsEmpty]: Start isEmpty. Operand 1188 states and 1687 transitions. [2019-10-15 01:18:16,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2019-10-15 01:18:16,907 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:18:16,907 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:18:17,116 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:18:17,117 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:18:17,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:18:17,118 INFO L82 PathProgramCache]: Analyzing trace with hash 1303858140, now seen corresponding path program 2 times [2019-10-15 01:18:17,118 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:18:17,118 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536750227] [2019-10-15 01:18:17,118 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:17,118 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:17,118 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:18:17,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:17,567 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2019-10-15 01:18:17,568 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536750227] [2019-10-15 01:18:17,568 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [828527372] [2019-10-15 01:18:17,580 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:18:18,207 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-10-15 01:18:18,208 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-15 01:18:18,220 INFO L256 TraceCheckSpWp]: Trace formula consists of 2331 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:18:18,241 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:18:18,452 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-10-15 01:18:18,452 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:18:18,920 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:18:18,983 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:18:19,075 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2019-10-15 01:18:19,075 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:18:19,075 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [21] total 31 [2019-10-15 01:18:19,076 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997198480] [2019-10-15 01:18:19,077 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-15 01:18:19,077 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:18:19,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-15 01:18:19,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=849, Unknown=0, NotChecked=0, Total=930 [2019-10-15 01:18:19,078 INFO L87 Difference]: Start difference. First operand 1188 states and 1687 transitions. Second operand 12 states. [2019-10-15 01:18:20,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:18:20,710 INFO L93 Difference]: Finished difference Result 2298 states and 3282 transitions. [2019-10-15 01:18:20,710 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 01:18:20,711 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 272 [2019-10-15 01:18:20,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:18:20,719 INFO L225 Difference]: With dead ends: 2298 [2019-10-15 01:18:20,720 INFO L226 Difference]: Without dead ends: 1190 [2019-10-15 01:18:20,725 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 570 GetRequests, 536 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=103, Invalid=1019, Unknown=0, NotChecked=0, Total=1122 [2019-10-15 01:18:20,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1190 states. [2019-10-15 01:18:20,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1190 to 1188. [2019-10-15 01:18:20,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1188 states. [2019-10-15 01:18:20,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1188 states to 1188 states and 1686 transitions. [2019-10-15 01:18:20,779 INFO L78 Accepts]: Start accepts. Automaton has 1188 states and 1686 transitions. Word has length 272 [2019-10-15 01:18:20,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:18:20,779 INFO L462 AbstractCegarLoop]: Abstraction has 1188 states and 1686 transitions. [2019-10-15 01:18:20,779 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-15 01:18:20,779 INFO L276 IsEmpty]: Start isEmpty. Operand 1188 states and 1686 transitions. [2019-10-15 01:18:20,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2019-10-15 01:18:20,785 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:18:20,785 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:18:20,995 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:18:20,996 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:18:20,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:18:20,996 INFO L82 PathProgramCache]: Analyzing trace with hash -1147644025, now seen corresponding path program 3 times [2019-10-15 01:18:20,996 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:18:20,997 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345572264] [2019-10-15 01:18:20,997 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:20,997 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:20,997 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:18:21,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:21,389 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-10-15 01:18:21,389 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345572264] [2019-10-15 01:18:21,390 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [116566514] [2019-10-15 01:18:21,390 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:18:21,998 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-15 01:18:21,998 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-15 01:18:22,003 INFO L256 TraceCheckSpWp]: Trace formula consists of 2345 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:18:22,011 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:18:22,288 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-10-15 01:18:22,288 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:18:22,805 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:18:22,890 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:18:22,967 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:18:23,117 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2019-10-15 01:18:23,117 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:18:23,118 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [21] total 34 [2019-10-15 01:18:23,118 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916985565] [2019-10-15 01:18:23,119 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-15 01:18:23,119 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:18:23,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-15 01:18:23,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=1034, Unknown=0, NotChecked=0, Total=1122 [2019-10-15 01:18:23,120 INFO L87 Difference]: Start difference. First operand 1188 states and 1686 transitions. Second operand 15 states. [2019-10-15 01:18:24,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:18:24,930 INFO L93 Difference]: Finished difference Result 2305 states and 3289 transitions. [2019-10-15 01:18:24,930 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 01:18:24,930 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 273 [2019-10-15 01:18:24,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:18:24,940 INFO L225 Difference]: With dead ends: 2305 [2019-10-15 01:18:24,940 INFO L226 Difference]: Without dead ends: 1192 [2019-10-15 01:18:24,945 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 573 GetRequests, 533 SyntacticMatches, 4 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=117, Invalid=1289, Unknown=0, NotChecked=0, Total=1406 [2019-10-15 01:18:24,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1192 states. [2019-10-15 01:18:24,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1192 to 1188. [2019-10-15 01:18:24,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1188 states. [2019-10-15 01:18:24,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1188 states to 1188 states and 1685 transitions. [2019-10-15 01:18:24,995 INFO L78 Accepts]: Start accepts. Automaton has 1188 states and 1685 transitions. Word has length 273 [2019-10-15 01:18:24,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:18:24,995 INFO L462 AbstractCegarLoop]: Abstraction has 1188 states and 1685 transitions. [2019-10-15 01:18:24,995 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-15 01:18:24,995 INFO L276 IsEmpty]: Start isEmpty. Operand 1188 states and 1685 transitions. [2019-10-15 01:18:25,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2019-10-15 01:18:25,001 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:18:25,002 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:18:25,209 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:18:25,210 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:18:25,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:18:25,210 INFO L82 PathProgramCache]: Analyzing trace with hash -1154209828, now seen corresponding path program 1 times [2019-10-15 01:18:25,211 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:18:25,211 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293853862] [2019-10-15 01:18:25,211 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:25,212 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:25,212 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:18:25,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:25,631 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-10-15 01:18:25,631 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293853862] [2019-10-15 01:18:25,632 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666888091] [2019-10-15 01:18:25,632 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:18:26,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:26,343 INFO L256 TraceCheckSpWp]: Trace formula consists of 2993 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:18:26,350 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:18:26,498 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-10-15 01:18:26,498 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:18:26,924 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:18:27,004 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:18:27,085 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2019-10-15 01:18:27,085 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:18:27,085 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [21] total 30 [2019-10-15 01:18:27,085 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740605283] [2019-10-15 01:18:27,086 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-15 01:18:27,086 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:18:27,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-15 01:18:27,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=796, Unknown=0, NotChecked=0, Total=870 [2019-10-15 01:18:27,087 INFO L87 Difference]: Start difference. First operand 1188 states and 1685 transitions. Second operand 11 states. [2019-10-15 01:18:28,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:18:28,826 INFO L93 Difference]: Finished difference Result 2304 states and 3289 transitions. [2019-10-15 01:18:28,826 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 01:18:28,826 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 274 [2019-10-15 01:18:28,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:18:28,833 INFO L225 Difference]: With dead ends: 2304 [2019-10-15 01:18:28,833 INFO L226 Difference]: Without dead ends: 1196 [2019-10-15 01:18:28,837 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 574 GetRequests, 540 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=94, Invalid=962, Unknown=0, NotChecked=0, Total=1056 [2019-10-15 01:18:28,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1196 states. [2019-10-15 01:18:28,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1196 to 1190. [2019-10-15 01:18:28,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1190 states. [2019-10-15 01:18:28,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1190 states to 1190 states and 1688 transitions. [2019-10-15 01:18:28,883 INFO L78 Accepts]: Start accepts. Automaton has 1190 states and 1688 transitions. Word has length 274 [2019-10-15 01:18:28,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:18:28,884 INFO L462 AbstractCegarLoop]: Abstraction has 1190 states and 1688 transitions. [2019-10-15 01:18:28,884 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-15 01:18:28,884 INFO L276 IsEmpty]: Start isEmpty. Operand 1190 states and 1688 transitions. [2019-10-15 01:18:28,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2019-10-15 01:18:28,890 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:18:28,890 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:18:29,103 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:18:29,104 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:18:29,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:18:29,105 INFO L82 PathProgramCache]: Analyzing trace with hash 1577856674, now seen corresponding path program 1 times [2019-10-15 01:18:29,106 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:18:29,106 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519417376] [2019-10-15 01:18:29,106 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:29,106 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:29,107 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:18:29,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:29,492 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-10-15 01:18:29,493 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519417376] [2019-10-15 01:18:29,493 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676477125] [2019-10-15 01:18:29,493 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true