/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/product-lines/email_spec8_product30.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 00:55:45,323 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 00:55:45,325 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 00:55:45,338 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 00:55:45,338 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 00:55:45,339 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 00:55:45,340 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 00:55:45,342 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 00:55:45,344 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 00:55:45,345 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 00:55:45,346 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 00:55:45,347 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 00:55:45,347 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 00:55:45,348 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 00:55:45,349 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 00:55:45,351 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 00:55:45,351 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 00:55:45,352 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 00:55:45,354 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 00:55:45,356 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 00:55:45,358 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 00:55:45,359 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 00:55:45,360 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 00:55:45,360 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 00:55:45,363 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 00:55:45,363 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 00:55:45,363 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 00:55:45,364 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 00:55:45,365 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 00:55:45,366 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 00:55:45,366 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 00:55:45,367 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 00:55:45,368 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 00:55:45,368 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 00:55:45,369 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 00:55:45,370 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 00:55:45,370 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 00:55:45,371 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 00:55:45,371 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 00:55:45,372 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 00:55:45,373 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 00:55:45,373 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-07 00:55:45,388 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 00:55:45,388 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 00:55:45,389 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 00:55:45,390 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 00:55:45,390 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 00:55:45,390 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 00:55:45,390 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 00:55:45,391 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 00:55:45,391 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 00:55:45,391 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 00:55:45,391 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 00:55:45,391 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 00:55:45,391 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 00:55:45,392 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 00:55:45,392 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 00:55:45,392 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 00:55:45,392 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 00:55:45,393 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 00:55:45,393 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 00:55:45,393 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 00:55:45,393 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 00:55:45,393 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:55:45,394 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 00:55:45,394 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 00:55:45,394 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 00:55:45,394 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 00:55:45,394 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 00:55:45,395 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 00:55:45,395 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-11-07 00:55:45,683 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 00:55:45,698 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 00:55:45,703 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 00:55:45,705 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 00:55:45,705 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 00:55:45,706 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec8_product30.cil.c [2019-11-07 00:55:45,783 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c44c1c321/7e12a508c525435d8618c735cd62cba0/FLAGe63dec356 [2019-11-07 00:55:46,419 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 00:55:46,421 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec8_product30.cil.c [2019-11-07 00:55:46,451 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c44c1c321/7e12a508c525435d8618c735cd62cba0/FLAGe63dec356 [2019-11-07 00:55:46,601 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c44c1c321/7e12a508c525435d8618c735cd62cba0 [2019-11-07 00:55:46,611 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 00:55:46,612 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 00:55:46,613 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 00:55:46,614 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 00:55:46,617 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 00:55:46,618 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:55:46" (1/1) ... [2019-11-07 00:55:46,621 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6731947f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:46, skipping insertion in model container [2019-11-07 00:55:46,622 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:55:46" (1/1) ... [2019-11-07 00:55:46,629 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 00:55:46,717 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 00:55:47,553 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:55:47,590 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 00:55:47,853 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:55:47,951 INFO L192 MainTranslator]: Completed translation [2019-11-07 00:55:47,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:47 WrapperNode [2019-11-07 00:55:47,951 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 00:55:47,952 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 00:55:47,953 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 00:55:47,953 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 00:55:47,967 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:47" (1/1) ... [2019-11-07 00:55:47,968 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:47" (1/1) ... [2019-11-07 00:55:48,015 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:47" (1/1) ... [2019-11-07 00:55:48,015 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:47" (1/1) ... [2019-11-07 00:55:48,104 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:47" (1/1) ... [2019-11-07 00:55:48,138 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:47" (1/1) ... [2019-11-07 00:55:48,166 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:47" (1/1) ... [2019-11-07 00:55:48,186 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 00:55:48,186 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 00:55:48,187 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 00:55:48,187 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 00:55:48,190 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:47" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:55:48,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 00:55:48,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 00:55:48,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 00:55:48,268 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-11-07 00:55:48,268 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-11-07 00:55:48,269 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-11-07 00:55:48,269 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-11-07 00:55:48,269 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-11-07 00:55:48,270 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-11-07 00:55:48,271 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-11-07 00:55:48,271 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-11-07 00:55:48,271 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 00:55:48,271 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 00:55:48,272 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-11-07 00:55:48,272 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-11-07 00:55:48,273 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-11-07 00:55:48,275 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-11-07 00:55:48,276 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-11-07 00:55:48,276 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-11-07 00:55:48,276 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-11-07 00:55:48,276 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-11-07 00:55:48,277 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-11-07 00:55:48,277 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-11-07 00:55:48,277 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptAutoResponder_spec__1 [2019-11-07 00:55:48,277 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptAutoResponder_spec__2 [2019-11-07 00:55:48,277 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 00:55:48,277 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-11-07 00:55:48,278 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AutoResponder [2019-11-07 00:55:48,278 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Sign [2019-11-07 00:55:48,278 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-11-07 00:55:48,278 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-11-07 00:55:48,278 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-11-07 00:55:48,278 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-11-07 00:55:48,279 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-11-07 00:55:48,279 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 00:55:48,279 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 00:55:48,280 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 00:55:48,280 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 00:55:48,280 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 00:55:48,280 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 00:55:48,280 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 00:55:48,281 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 00:55:48,281 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 00:55:48,281 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 00:55:48,281 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 00:55:48,281 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-11-07 00:55:48,281 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-11-07 00:55:48,281 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2019-11-07 00:55:48,282 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-11-07 00:55:48,282 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-11-07 00:55:48,282 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Encrypt [2019-11-07 00:55:48,282 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-11-07 00:55:48,282 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Verify [2019-11-07 00:55:48,282 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-11-07 00:55:48,282 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-11-07 00:55:48,283 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-11-07 00:55:48,283 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-11-07 00:55:48,283 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-11-07 00:55:48,283 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-11-07 00:55:48,283 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-11-07 00:55:48,283 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-11-07 00:55:48,283 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-11-07 00:55:48,284 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-11-07 00:55:48,284 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-11-07 00:55:48,285 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-11-07 00:55:48,285 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-11-07 00:55:48,285 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-11-07 00:55:48,285 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-11-07 00:55:48,285 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-11-07 00:55:48,285 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-11-07 00:55:48,285 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-11-07 00:55:48,286 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-11-07 00:55:48,286 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-11-07 00:55:48,287 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-11-07 00:55:48,287 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-11-07 00:55:48,287 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-11-07 00:55:48,287 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-11-07 00:55:48,287 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-11-07 00:55:48,287 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-11-07 00:55:48,288 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-11-07 00:55:48,288 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-11-07 00:55:48,288 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-11-07 00:55:48,288 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-11-07 00:55:48,289 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-11-07 00:55:48,289 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-11-07 00:55:48,290 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-11-07 00:55:48,290 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-11-07 00:55:48,291 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-11-07 00:55:48,291 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-11-07 00:55:48,291 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-11-07 00:55:48,291 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-11-07 00:55:48,291 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-11-07 00:55:48,291 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-11-07 00:55:48,292 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-11-07 00:55:48,292 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-11-07 00:55:48,292 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-11-07 00:55:48,292 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-11-07 00:55:48,292 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-11-07 00:55:48,292 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-11-07 00:55:48,292 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-11-07 00:55:48,293 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-11-07 00:55:48,293 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-11-07 00:55:48,293 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-11-07 00:55:48,293 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-11-07 00:55:48,293 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-11-07 00:55:48,293 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-11-07 00:55:48,293 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-11-07 00:55:48,294 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-11-07 00:55:48,294 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-11-07 00:55:48,294 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-11-07 00:55:48,294 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-11-07 00:55:48,294 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-11-07 00:55:48,294 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-11-07 00:55:48,294 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-11-07 00:55:48,295 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-11-07 00:55:48,295 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-11-07 00:55:48,295 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 00:55:48,296 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 00:55:48,296 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 00:55:48,296 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-11-07 00:55:48,296 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-11-07 00:55:48,297 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-11-07 00:55:48,297 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-11-07 00:55:48,297 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-11-07 00:55:48,298 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-11-07 00:55:48,298 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-11-07 00:55:48,299 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-11-07 00:55:48,299 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-11-07 00:55:48,299 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 00:55:48,299 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 00:55:48,299 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 00:55:48,300 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-11-07 00:55:48,300 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-11-07 00:55:48,300 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-11-07 00:55:48,300 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-11-07 00:55:48,301 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-11-07 00:55:48,301 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-11-07 00:55:48,304 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-11-07 00:55:48,305 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-11-07 00:55:48,305 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-11-07 00:55:48,306 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-11-07 00:55:48,306 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-11-07 00:55:48,306 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 00:55:48,307 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 00:55:48,313 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 00:55:48,313 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-11-07 00:55:48,314 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-11-07 00:55:48,314 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-11-07 00:55:48,314 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-11-07 00:55:48,314 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-11-07 00:55:48,314 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-11-07 00:55:48,314 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-11-07 00:55:48,314 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-11-07 00:55:48,314 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-11-07 00:55:48,315 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-11-07 00:55:48,315 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-11-07 00:55:48,315 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-11-07 00:55:48,315 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-11-07 00:55:48,315 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 00:55:48,315 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 00:55:48,315 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-11-07 00:55:48,316 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptAutoResponder_spec__1 [2019-11-07 00:55:48,317 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptAutoResponder_spec__2 [2019-11-07 00:55:48,317 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-11-07 00:55:48,317 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-11-07 00:55:48,317 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-11-07 00:55:48,317 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-11-07 00:55:48,317 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-11-07 00:55:48,318 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-11-07 00:55:48,318 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-11-07 00:55:48,318 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-11-07 00:55:48,318 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-11-07 00:55:48,318 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-11-07 00:55:48,318 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-11-07 00:55:48,318 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-11-07 00:55:48,318 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-11-07 00:55:48,319 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-11-07 00:55:48,319 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AutoResponder [2019-11-07 00:55:48,319 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Sign [2019-11-07 00:55:48,319 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-11-07 00:55:48,319 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 00:55:48,319 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 00:55:48,319 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 00:55:48,319 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 00:55:48,320 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 00:55:48,320 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 00:55:48,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 00:55:48,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 00:55:48,320 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 00:55:48,320 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 00:55:48,320 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 00:55:48,320 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 00:55:48,321 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 00:55:48,321 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 00:55:48,321 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 00:55:48,321 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 00:55:48,321 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 00:55:48,321 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-11-07 00:55:48,321 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-11-07 00:55:48,321 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-11-07 00:55:48,322 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-11-07 00:55:48,322 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-11-07 00:55:48,322 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-11-07 00:55:48,322 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-11-07 00:55:48,322 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-11-07 00:55:48,322 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-11-07 00:55:48,322 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-11-07 00:55:48,323 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-11-07 00:55:48,323 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-11-07 00:55:48,323 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-11-07 00:55:48,323 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-11-07 00:55:48,323 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-11-07 00:55:48,323 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-11-07 00:55:48,323 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-11-07 00:55:48,324 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-11-07 00:55:48,324 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-11-07 00:55:48,324 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-11-07 00:55:48,324 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2019-11-07 00:55:48,324 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Encrypt [2019-11-07 00:55:48,324 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-11-07 00:55:48,325 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Verify [2019-11-07 00:55:48,325 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-11-07 00:55:48,325 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-11-07 00:55:48,325 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-11-07 00:55:48,325 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-11-07 00:55:48,325 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-11-07 00:55:48,325 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-11-07 00:55:48,326 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-11-07 00:55:48,326 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-11-07 00:55:48,326 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-11-07 00:55:48,326 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-11-07 00:55:48,326 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-11-07 00:55:48,326 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-11-07 00:55:48,326 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-11-07 00:55:48,327 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-11-07 00:55:48,327 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-11-07 00:55:48,327 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-11-07 00:55:48,327 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-11-07 00:55:48,327 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-11-07 00:55:48,327 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-11-07 00:55:48,328 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-11-07 00:55:48,328 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-11-07 00:55:48,328 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-11-07 00:55:48,328 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-11-07 00:55:48,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 00:55:48,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 00:55:48,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 00:55:50,528 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 00:55:50,529 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-07 00:55:50,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:55:50 BoogieIcfgContainer [2019-11-07 00:55:50,531 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 00:55:50,533 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 00:55:50,533 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 00:55:50,536 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 00:55:50,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:55:46" (1/3) ... [2019-11-07 00:55:50,538 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57fb9bfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:55:50, skipping insertion in model container [2019-11-07 00:55:50,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:47" (2/3) ... [2019-11-07 00:55:50,539 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57fb9bfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:55:50, skipping insertion in model container [2019-11-07 00:55:50,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:55:50" (3/3) ... [2019-11-07 00:55:50,542 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec8_product30.cil.c [2019-11-07 00:55:50,555 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 00:55:50,569 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 00:55:50,583 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 00:55:50,627 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 00:55:50,631 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 00:55:50,631 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 00:55:50,631 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 00:55:50,631 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 00:55:50,631 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 00:55:50,632 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 00:55:50,632 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 00:55:50,671 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states. [2019-11-07 00:55:50,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2019-11-07 00:55:50,708 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:55:50,709 INFO L410 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, 1, 1, 1] [2019-11-07 00:55:50,712 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:55:50,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:55:50,719 INFO L82 PathProgramCache]: Analyzing trace with hash -1306914871, now seen corresponding path program 1 times [2019-11-07 00:55:50,730 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:55:50,730 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112464213] [2019-11-07 00:55:50,730 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:55:51,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:55:51,461 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-11-07 00:55:51,461 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112464213] [2019-11-07 00:55:51,462 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:55:51,463 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 00:55:51,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064023051] [2019-11-07 00:55:51,471 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 00:55:51,473 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:55:51,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 00:55:51,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:55:51,494 INFO L87 Difference]: Start difference. First operand 548 states. Second operand 2 states. [2019-11-07 00:55:51,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:55:51,600 INFO L93 Difference]: Finished difference Result 782 states and 1030 transitions. [2019-11-07 00:55:51,600 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 00:55:51,602 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 158 [2019-11-07 00:55:51,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:55:51,632 INFO L225 Difference]: With dead ends: 782 [2019-11-07 00:55:51,633 INFO L226 Difference]: Without dead ends: 497 [2019-11-07 00:55:51,650 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:55:51,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2019-11-07 00:55:51,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 497. [2019-11-07 00:55:51,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 497 states. [2019-11-07 00:55:51,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 659 transitions. [2019-11-07 00:55:51,827 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 659 transitions. Word has length 158 [2019-11-07 00:55:51,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:55:51,829 INFO L462 AbstractCegarLoop]: Abstraction has 497 states and 659 transitions. [2019-11-07 00:55:51,829 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 00:55:51,829 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 659 transitions. [2019-11-07 00:55:51,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2019-11-07 00:55:51,835 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:55:51,839 INFO L410 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, 1, 1, 1, 1] [2019-11-07 00:55:51,839 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:55:51,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:55:51,839 INFO L82 PathProgramCache]: Analyzing trace with hash -243585383, now seen corresponding path program 1 times [2019-11-07 00:55:51,840 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:55:51,840 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071048448] [2019-11-07 00:55:51,840 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:55:51,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:55:52,098 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-11-07 00:55:52,098 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071048448] [2019-11-07 00:55:52,099 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:55:52,099 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:55:52,099 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360770881] [2019-11-07 00:55:52,114 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:55:52,114 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:55:52,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:55:52,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:55:52,121 INFO L87 Difference]: Start difference. First operand 497 states and 659 transitions. Second operand 3 states. [2019-11-07 00:55:52,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:55:52,250 INFO L93 Difference]: Finished difference Result 765 states and 998 transitions. [2019-11-07 00:55:52,251 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:55:52,251 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 159 [2019-11-07 00:55:52,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:55:52,257 INFO L225 Difference]: With dead ends: 765 [2019-11-07 00:55:52,257 INFO L226 Difference]: Without dead ends: 500 [2019-11-07 00:55:52,259 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:55:52,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2019-11-07 00:55:52,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 499. [2019-11-07 00:55:52,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 499 states. [2019-11-07 00:55:52,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 661 transitions. [2019-11-07 00:55:52,289 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 661 transitions. Word has length 159 [2019-11-07 00:55:52,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:55:52,290 INFO L462 AbstractCegarLoop]: Abstraction has 499 states and 661 transitions. [2019-11-07 00:55:52,290 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:55:52,290 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 661 transitions. [2019-11-07 00:55:52,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2019-11-07 00:55:52,295 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:55:52,295 INFO L410 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, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:55:52,296 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:55:52,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:55:52,296 INFO L82 PathProgramCache]: Analyzing trace with hash -614600471, now seen corresponding path program 1 times [2019-11-07 00:55:52,297 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:55:52,299 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101016863] [2019-11-07 00:55:52,300 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:55:52,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:55:52,539 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-11-07 00:55:52,539 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101016863] [2019-11-07 00:55:52,539 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:55:52,539 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:55:52,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844651111] [2019-11-07 00:55:52,541 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:55:52,543 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:55:52,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:55:52,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:55:52,544 INFO L87 Difference]: Start difference. First operand 499 states and 661 transitions. Second operand 3 states. [2019-11-07 00:55:52,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:55:52,588 INFO L93 Difference]: Finished difference Result 974 states and 1320 transitions. [2019-11-07 00:55:52,589 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:55:52,589 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 169 [2019-11-07 00:55:52,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:55:52,595 INFO L225 Difference]: With dead ends: 974 [2019-11-07 00:55:52,595 INFO L226 Difference]: Without dead ends: 540 [2019-11-07 00:55:52,597 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:55:52,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2019-11-07 00:55:52,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 539. [2019-11-07 00:55:52,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 539 states. [2019-11-07 00:55:52,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 730 transitions. [2019-11-07 00:55:52,625 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 730 transitions. Word has length 169 [2019-11-07 00:55:52,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:55:52,627 INFO L462 AbstractCegarLoop]: Abstraction has 539 states and 730 transitions. [2019-11-07 00:55:52,627 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:55:52,627 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 730 transitions. [2019-11-07 00:55:52,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2019-11-07 00:55:52,635 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:55:52,635 INFO L410 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, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:55:52,635 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:55:52,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:55:52,636 INFO L82 PathProgramCache]: Analyzing trace with hash -790439685, now seen corresponding path program 1 times [2019-11-07 00:55:52,636 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:55:52,636 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521964626] [2019-11-07 00:55:52,637 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:55:52,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:55:52,812 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-11-07 00:55:52,812 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521964626] [2019-11-07 00:55:52,813 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:55:52,813 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:55:52,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202953014] [2019-11-07 00:55:52,814 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:55:52,815 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:55:52,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:55:52,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:55:52,816 INFO L87 Difference]: Start difference. First operand 539 states and 730 transitions. Second operand 3 states. [2019-11-07 00:55:52,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:55:52,873 INFO L93 Difference]: Finished difference Result 1091 states and 1522 transitions. [2019-11-07 00:55:52,874 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:55:52,874 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 170 [2019-11-07 00:55:52,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:55:52,882 INFO L225 Difference]: With dead ends: 1091 [2019-11-07 00:55:52,883 INFO L226 Difference]: Without dead ends: 617 [2019-11-07 00:55:52,886 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:55:52,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2019-11-07 00:55:52,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 616. [2019-11-07 00:55:52,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 616 states. [2019-11-07 00:55:52,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 862 transitions. [2019-11-07 00:55:52,987 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 862 transitions. Word has length 170 [2019-11-07 00:55:52,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:55:52,988 INFO L462 AbstractCegarLoop]: Abstraction has 616 states and 862 transitions. [2019-11-07 00:55:52,988 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:55:52,989 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 862 transitions. [2019-11-07 00:55:52,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2019-11-07 00:55:52,996 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:55:52,996 INFO L410 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:55:52,997 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:55:52,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:55:52,997 INFO L82 PathProgramCache]: Analyzing trace with hash 1941991625, now seen corresponding path program 1 times [2019-11-07 00:55:52,998 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:55:52,998 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420318986] [2019-11-07 00:55:52,999 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:55:53,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:55:53,244 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-11-07 00:55:53,245 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420318986] [2019-11-07 00:55:53,245 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:55:53,245 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:55:53,246 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35680180] [2019-11-07 00:55:53,246 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:55:53,247 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:55:53,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:55:53,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:55:53,248 INFO L87 Difference]: Start difference. First operand 616 states and 862 transitions. Second operand 3 states. [2019-11-07 00:55:53,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:55:53,301 INFO L93 Difference]: Finished difference Result 1316 states and 1908 transitions. [2019-11-07 00:55:53,301 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:55:53,302 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 171 [2019-11-07 00:55:53,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:55:53,310 INFO L225 Difference]: With dead ends: 1316 [2019-11-07 00:55:53,310 INFO L226 Difference]: Without dead ends: 765 [2019-11-07 00:55:53,314 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:55:53,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765 states. [2019-11-07 00:55:53,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765 to 764. [2019-11-07 00:55:53,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 764 states. [2019-11-07 00:55:53,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 764 states to 764 states and 1114 transitions. [2019-11-07 00:55:53,374 INFO L78 Accepts]: Start accepts. Automaton has 764 states and 1114 transitions. Word has length 171 [2019-11-07 00:55:53,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:55:53,375 INFO L462 AbstractCegarLoop]: Abstraction has 764 states and 1114 transitions. [2019-11-07 00:55:53,375 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:55:53,375 INFO L276 IsEmpty]: Start isEmpty. Operand 764 states and 1114 transitions. [2019-11-07 00:55:53,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2019-11-07 00:55:53,383 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:55:53,383 INFO L410 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:55:53,384 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:55:53,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:55:53,384 INFO L82 PathProgramCache]: Analyzing trace with hash 1566187803, now seen corresponding path program 1 times [2019-11-07 00:55:53,385 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:55:53,385 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18203580] [2019-11-07 00:55:53,386 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:55:53,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:55:53,636 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-11-07 00:55:53,637 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18203580] [2019-11-07 00:55:53,637 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:55:53,637 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:55:53,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359272333] [2019-11-07 00:55:53,638 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:55:53,638 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:55:53,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:55:53,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:55:53,643 INFO L87 Difference]: Start difference. First operand 764 states and 1114 transitions. Second operand 3 states. [2019-11-07 00:55:53,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:55:53,701 INFO L93 Difference]: Finished difference Result 1748 states and 2644 transitions. [2019-11-07 00:55:53,701 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:55:53,701 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 172 [2019-11-07 00:55:53,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:55:53,710 INFO L225 Difference]: With dead ends: 1748 [2019-11-07 00:55:53,710 INFO L226 Difference]: Without dead ends: 1049 [2019-11-07 00:55:53,713 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:55:53,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1049 states. [2019-11-07 00:55:53,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1049 to 1048. [2019-11-07 00:55:53,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1048 states. [2019-11-07 00:55:53,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1048 states to 1048 states and 1594 transitions. [2019-11-07 00:55:53,764 INFO L78 Accepts]: Start accepts. Automaton has 1048 states and 1594 transitions. Word has length 172 [2019-11-07 00:55:53,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:55:53,765 INFO L462 AbstractCegarLoop]: Abstraction has 1048 states and 1594 transitions. [2019-11-07 00:55:53,765 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:55:53,766 INFO L276 IsEmpty]: Start isEmpty. Operand 1048 states and 1594 transitions. [2019-11-07 00:55:53,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2019-11-07 00:55:53,771 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:55:53,772 INFO L410 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:55:53,772 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:55:53,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:55:53,772 INFO L82 PathProgramCache]: Analyzing trace with hash 1262921115, now seen corresponding path program 1 times [2019-11-07 00:55:53,773 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:55:53,773 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745369199] [2019-11-07 00:55:53,773 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:55:53,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:55:53,988 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-07 00:55:53,988 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745369199] [2019-11-07 00:55:53,988 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:55:53,988 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:55:53,989 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612698370] [2019-11-07 00:55:53,989 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:55:53,989 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:55:53,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:55:53,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:55:53,990 INFO L87 Difference]: Start difference. First operand 1048 states and 1594 transitions. Second operand 3 states. [2019-11-07 00:55:54,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:55:54,049 INFO L93 Difference]: Finished difference Result 1404 states and 2062 transitions. [2019-11-07 00:55:54,052 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:55:54,053 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 175 [2019-11-07 00:55:54,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:55:54,061 INFO L225 Difference]: With dead ends: 1404 [2019-11-07 00:55:54,061 INFO L226 Difference]: Without dead ends: 1141 [2019-11-07 00:55:54,063 INFO L630 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 [2019-11-07 00:55:54,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1141 states. [2019-11-07 00:55:54,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1141 to 1141. [2019-11-07 00:55:54,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1141 states. [2019-11-07 00:55:54,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1141 states to 1141 states and 1717 transitions. [2019-11-07 00:55:54,141 INFO L78 Accepts]: Start accepts. Automaton has 1141 states and 1717 transitions. Word has length 175 [2019-11-07 00:55:54,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:55:54,142 INFO L462 AbstractCegarLoop]: Abstraction has 1141 states and 1717 transitions. [2019-11-07 00:55:54,143 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:55:54,143 INFO L276 IsEmpty]: Start isEmpty. Operand 1141 states and 1717 transitions. [2019-11-07 00:55:54,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2019-11-07 00:55:54,157 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:55:54,157 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:55:54,158 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:55:54,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:55:54,158 INFO L82 PathProgramCache]: Analyzing trace with hash -1033929559, now seen corresponding path program 1 times [2019-11-07 00:55:54,159 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:55:54,159 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073086337] [2019-11-07 00:55:54,160 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:55:54,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:55:54,863 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 22 proven. 11 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2019-11-07 00:55:54,863 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073086337] [2019-11-07 00:55:54,863 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910186892] [2019-11-07 00:55:54,863 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 [2019-11-07 00:55:55,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:55:55,671 INFO L256 TraceCheckSpWp]: Trace formula consists of 3523 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 00:55:55,709 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:55:56,140 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2019-11-07 00:55:56,141 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:55:56,826 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:55:56,920 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:55:57,014 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:55:57,201 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 22 proven. 3 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2019-11-07 00:55:57,202 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:55:57,202 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [22, 9] total 35 [2019-11-07 00:55:57,202 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491935197] [2019-11-07 00:55:57,203 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 00:55:57,203 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:55:57,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 00:55:57,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1100, Unknown=0, NotChecked=0, Total=1190 [2019-11-07 00:55:57,205 INFO L87 Difference]: Start difference. First operand 1141 states and 1717 transitions. Second operand 9 states. [2019-11-07 00:55:59,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:55:59,828 INFO L93 Difference]: Finished difference Result 2260 states and 3414 transitions. [2019-11-07 00:55:59,828 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-07 00:55:59,828 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 318 [2019-11-07 00:55:59,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:55:59,839 INFO L225 Difference]: With dead ends: 2260 [2019-11-07 00:55:59,839 INFO L226 Difference]: Without dead ends: 1155 [2019-11-07 00:55:59,846 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 665 GetRequests, 625 SyntacticMatches, 4 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=111, Invalid=1295, Unknown=0, NotChecked=0, Total=1406 [2019-11-07 00:55:59,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1155 states. [2019-11-07 00:55:59,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1155 to 1155. [2019-11-07 00:55:59,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1155 states. [2019-11-07 00:55:59,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1155 states to 1155 states and 1735 transitions. [2019-11-07 00:55:59,937 INFO L78 Accepts]: Start accepts. Automaton has 1155 states and 1735 transitions. Word has length 318 [2019-11-07 00:55:59,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:55:59,938 INFO L462 AbstractCegarLoop]: Abstraction has 1155 states and 1735 transitions. [2019-11-07 00:55:59,938 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 00:55:59,938 INFO L276 IsEmpty]: Start isEmpty. Operand 1155 states and 1735 transitions. [2019-11-07 00:55:59,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2019-11-07 00:55:59,950 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:55:59,951 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:56:00,160 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:56:00,161 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:56:00,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:56:00,161 INFO L82 PathProgramCache]: Analyzing trace with hash -167353673, now seen corresponding path program 1 times [2019-11-07 00:56:00,161 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:56:00,162 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467810203] [2019-11-07 00:56:00,162 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:56:00,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:56:01,005 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 22 proven. 11 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2019-11-07 00:56:01,006 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467810203] [2019-11-07 00:56:01,007 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278732558] [2019-11-07 00:56:01,007 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:56:01,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:56:01,856 INFO L256 TraceCheckSpWp]: Trace formula consists of 3524 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-07 00:56:01,878 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:56:02,168 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2019-11-07 00:56:02,168 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:56:02,766 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:56:02,848 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:56:02,955 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 22 proven. 3 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2019-11-07 00:56:02,955 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:56:02,955 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [22, 7] total 31 [2019-11-07 00:56:02,956 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562229105] [2019-11-07 00:56:02,956 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:56:02,957 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:56:02,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:56:02,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=854, Unknown=0, NotChecked=0, Total=930 [2019-11-07 00:56:02,958 INFO L87 Difference]: Start difference. First operand 1155 states and 1735 transitions. Second operand 7 states. [2019-11-07 00:56:03,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:56:03,956 INFO L93 Difference]: Finished difference Result 2261 states and 3424 transitions. [2019-11-07 00:56:03,957 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:56:03,957 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 319 [2019-11-07 00:56:03,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:56:03,964 INFO L225 Difference]: With dead ends: 2261 [2019-11-07 00:56:03,965 INFO L226 Difference]: Without dead ends: 1157 [2019-11-07 00:56:03,970 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 666 GetRequests, 632 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=90, Invalid=966, Unknown=0, NotChecked=0, Total=1056 [2019-11-07 00:56:03,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2019-11-07 00:56:04,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1157. [2019-11-07 00:56:04,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2019-11-07 00:56:04,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1738 transitions. [2019-11-07 00:56:04,034 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1738 transitions. Word has length 319 [2019-11-07 00:56:04,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:56:04,035 INFO L462 AbstractCegarLoop]: Abstraction has 1157 states and 1738 transitions. [2019-11-07 00:56:04,035 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:56:04,035 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1738 transitions. [2019-11-07 00:56:04,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2019-11-07 00:56:04,044 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:56:04,044 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:56:04,254 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:56:04,254 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:56:04,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:56:04,254 INFO L82 PathProgramCache]: Analyzing trace with hash -815589716, now seen corresponding path program 1 times [2019-11-07 00:56:04,255 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:56:04,255 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375483604] [2019-11-07 00:56:04,257 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:56:04,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:56:04,851 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 22 proven. 11 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2019-11-07 00:56:04,851 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375483604] [2019-11-07 00:56:04,852 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752795099] [2019-11-07 00:56:04,852 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:56:05,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:56:05,783 INFO L256 TraceCheckSpWp]: Trace formula consists of 3525 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 00:56:05,793 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:56:06,058 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-11-07 00:56:06,058 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:56:06,696 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:56:06,779 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:56:06,864 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:56:07,080 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2019-11-07 00:56:07,081 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:56:07,081 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [22] total 36 [2019-11-07 00:56:07,081 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287905039] [2019-11-07 00:56:07,083 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-07 00:56:07,083 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:56:07,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-07 00:56:07,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=1161, Unknown=0, NotChecked=0, Total=1260 [2019-11-07 00:56:07,084 INFO L87 Difference]: Start difference. First operand 1157 states and 1738 transitions. Second operand 16 states. [2019-11-07 00:56:08,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:56:08,806 INFO L93 Difference]: Finished difference Result 2265 states and 3418 transitions. [2019-11-07 00:56:08,807 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-07 00:56:08,807 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 320 [2019-11-07 00:56:08,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:56:08,817 INFO L225 Difference]: With dead ends: 2265 [2019-11-07 00:56:08,817 INFO L226 Difference]: Without dead ends: 1169 [2019-11-07 00:56:08,822 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 670 GetRequests, 629 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=131, Invalid=1429, Unknown=0, NotChecked=0, Total=1560 [2019-11-07 00:56:08,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1169 states. [2019-11-07 00:56:08,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1169 to 1167. [2019-11-07 00:56:08,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1167 states. [2019-11-07 00:56:08,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1167 states to 1167 states and 1749 transitions. [2019-11-07 00:56:08,886 INFO L78 Accepts]: Start accepts. Automaton has 1167 states and 1749 transitions. Word has length 320 [2019-11-07 00:56:08,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:56:08,887 INFO L462 AbstractCegarLoop]: Abstraction has 1167 states and 1749 transitions. [2019-11-07 00:56:08,887 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-07 00:56:08,887 INFO L276 IsEmpty]: Start isEmpty. Operand 1167 states and 1749 transitions. [2019-11-07 00:56:08,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2019-11-07 00:56:08,899 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:56:08,899 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:56:09,116 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:56:09,116 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:56:09,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:56:09,117 INFO L82 PathProgramCache]: Analyzing trace with hash -1955855704, now seen corresponding path program 2 times [2019-11-07 00:56:09,117 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:56:09,117 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758892147] [2019-11-07 00:56:09,117 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:56:09,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:56:09,714 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 22 proven. 11 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2019-11-07 00:56:09,714 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758892147] [2019-11-07 00:56:09,714 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015261945] [2019-11-07 00:56:09,715 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 [2019-11-07 00:56:10,455 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-11-07 00:56:10,456 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-07 00:56:10,463 INFO L256 TraceCheckSpWp]: Trace formula consists of 2481 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-07 00:56:10,470 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:56:10,664 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-11-07 00:56:10,665 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:56:11,234 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:56:11,300 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:56:11,456 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2019-11-07 00:56:11,456 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:56:11,457 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [22] total 32 [2019-11-07 00:56:11,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420807640] [2019-11-07 00:56:11,458 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-07 00:56:11,458 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:56:11,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-07 00:56:11,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=909, Unknown=0, NotChecked=0, Total=992 [2019-11-07 00:56:11,459 INFO L87 Difference]: Start difference. First operand 1167 states and 1749 transitions. Second operand 12 states. [2019-11-07 00:56:13,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:56:13,084 INFO L93 Difference]: Finished difference Result 2256 states and 3406 transitions. [2019-11-07 00:56:13,085 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-07 00:56:13,085 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 321 [2019-11-07 00:56:13,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:56:13,092 INFO L225 Difference]: With dead ends: 2256 [2019-11-07 00:56:13,093 INFO L226 Difference]: Without dead ends: 1169 [2019-11-07 00:56:13,097 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 671 GetRequests, 636 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=105, Invalid=1085, Unknown=0, NotChecked=0, Total=1190 [2019-11-07 00:56:13,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1169 states. [2019-11-07 00:56:13,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1169 to 1167. [2019-11-07 00:56:13,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1167 states. [2019-11-07 00:56:13,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1167 states to 1167 states and 1748 transitions. [2019-11-07 00:56:13,151 INFO L78 Accepts]: Start accepts. Automaton has 1167 states and 1748 transitions. Word has length 321 [2019-11-07 00:56:13,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:56:13,151 INFO L462 AbstractCegarLoop]: Abstraction has 1167 states and 1748 transitions. [2019-11-07 00:56:13,151 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-07 00:56:13,152 INFO L276 IsEmpty]: Start isEmpty. Operand 1167 states and 1748 transitions. [2019-11-07 00:56:13,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2019-11-07 00:56:13,169 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:56:13,169 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:56:13,386 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:56:13,386 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:56:13,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:56:13,387 INFO L82 PathProgramCache]: Analyzing trace with hash -1583641059, now seen corresponding path program 3 times [2019-11-07 00:56:13,387 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:56:13,387 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625487893] [2019-11-07 00:56:13,387 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:56:13,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:56:13,795 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 22 proven. 11 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2019-11-07 00:56:13,796 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625487893] [2019-11-07 00:56:13,796 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620785004] [2019-11-07 00:56:13,796 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 [2019-11-07 00:56:14,572 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-07 00:56:14,572 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-07 00:56:14,577 INFO L256 TraceCheckSpWp]: Trace formula consists of 2857 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 00:56:14,585 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:56:14,826 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-11-07 00:56:14,827 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:56:15,472 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:56:15,563 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:56:15,683 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:56:15,832 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2019-11-07 00:56:15,832 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:56:15,832 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [22] total 35 [2019-11-07 00:56:15,832 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173578358] [2019-11-07 00:56:15,834 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-07 00:56:15,834 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:56:15,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-07 00:56:15,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1100, Unknown=0, NotChecked=0, Total=1190 [2019-11-07 00:56:15,835 INFO L87 Difference]: Start difference. First operand 1167 states and 1748 transitions. Second operand 15 states. [2019-11-07 00:56:18,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:56:18,072 INFO L93 Difference]: Finished difference Result 2263 states and 3413 transitions. [2019-11-07 00:56:18,077 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-07 00:56:18,077 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 322 [2019-11-07 00:56:18,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:56:18,087 INFO L225 Difference]: With dead ends: 2263 [2019-11-07 00:56:18,087 INFO L226 Difference]: Without dead ends: 1171 [2019-11-07 00:56:18,092 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 674 GetRequests, 633 SyntacticMatches, 4 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=119, Invalid=1363, Unknown=0, NotChecked=0, Total=1482 [2019-11-07 00:56:18,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1171 states. [2019-11-07 00:56:18,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1171 to 1167. [2019-11-07 00:56:18,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1167 states. [2019-11-07 00:56:18,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1167 states to 1167 states and 1747 transitions. [2019-11-07 00:56:18,138 INFO L78 Accepts]: Start accepts. Automaton has 1167 states and 1747 transitions. Word has length 322 [2019-11-07 00:56:18,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:56:18,138 INFO L462 AbstractCegarLoop]: Abstraction has 1167 states and 1747 transitions. [2019-11-07 00:56:18,138 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-11-07 00:56:18,139 INFO L276 IsEmpty]: Start isEmpty. Operand 1167 states and 1747 transitions. [2019-11-07 00:56:18,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2019-11-07 00:56:18,144 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:56:18,144 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:56:18,345 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:56:18,345 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:56:18,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:56:18,346 INFO L82 PathProgramCache]: Analyzing trace with hash -452917154, now seen corresponding path program 1 times [2019-11-07 00:56:18,346 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:56:18,346 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577661340] [2019-11-07 00:56:18,346 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:56:18,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:56:18,844 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 22 proven. 11 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2019-11-07 00:56:18,845 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577661340] [2019-11-07 00:56:18,845 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370755474] [2019-11-07 00:56:18,845 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