/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 --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pg.ko-main.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 02:24:31,320 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 02:24:31,322 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 02:24:31,335 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 02:24:31,336 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 02:24:31,337 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 02:24:31,338 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 02:24:31,340 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 02:24:31,342 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 02:24:31,343 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 02:24:31,344 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 02:24:31,345 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 02:24:31,345 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 02:24:31,346 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 02:24:31,347 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 02:24:31,348 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 02:24:31,349 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 02:24:31,350 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 02:24:31,352 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 02:24:31,354 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 02:24:31,356 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 02:24:31,357 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 02:24:31,359 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 02:24:31,359 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 02:24:31,362 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 02:24:31,362 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 02:24:31,362 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 02:24:31,363 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 02:24:31,364 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 02:24:31,367 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 02:24:31,368 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 02:24:31,368 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 02:24:31,369 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 02:24:31,370 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 02:24:31,373 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 02:24:31,373 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 02:24:31,374 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 02:24:31,374 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 02:24:31,375 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 02:24:31,375 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 02:24:31,379 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 02:24:31,380 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 02:24:31,403 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 02:24:31,403 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 02:24:31,405 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 02:24:31,405 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 02:24:31,405 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 02:24:31,406 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 02:24:31,406 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 02:24:31,406 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 02:24:31,406 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 02:24:31,406 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 02:24:31,406 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 02:24:31,407 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 02:24:31,408 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 02:24:31,408 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 02:24:31,408 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 02:24:31,408 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 02:24:31,409 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 02:24:31,409 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 02:24:31,409 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 02:24:31,409 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 02:24:31,409 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 02:24:31,410 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 02:24:31,410 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 02:24:31,410 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 02:24:31,410 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 02:24:31,411 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 02:24:31,411 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 02:24:31,411 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 02:24:31,412 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-11-07 02:24:31,725 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 02:24:31,750 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 02:24:31,754 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 02:24:31,755 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 02:24:31,756 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 02:24:31,756 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pg.ko-main.cil.out.i [2019-11-07 02:24:31,834 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/647e30077/f9fb44938da04a19bd844c8ce5a49c9f/FLAGd31520ee4 [2019-11-07 02:24:32,633 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 02:24:32,635 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pg.ko-main.cil.out.i [2019-11-07 02:24:32,680 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/647e30077/f9fb44938da04a19bd844c8ce5a49c9f/FLAGd31520ee4 [2019-11-07 02:24:33,177 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/647e30077/f9fb44938da04a19bd844c8ce5a49c9f [2019-11-07 02:24:33,189 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 02:24:33,197 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 02:24:33,206 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 02:24:33,210 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 02:24:33,217 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 02:24:33,218 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:24:33" (1/1) ... [2019-11-07 02:24:33,222 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e7b2edf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:24:33, skipping insertion in model container [2019-11-07 02:24:33,225 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:24:33" (1/1) ... [2019-11-07 02:24:33,236 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 02:24:33,430 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 02:24:34,628 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 02:24:34,679 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 02:24:34,918 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 02:24:35,055 INFO L192 MainTranslator]: Completed translation [2019-11-07 02:24:35,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:24:35 WrapperNode [2019-11-07 02:24:35,056 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 02:24:35,057 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 02:24:35,057 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 02:24:35,057 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 02:24:35,081 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:24:35" (1/1) ... [2019-11-07 02:24:35,082 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:24:35" (1/1) ... [2019-11-07 02:24:35,170 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:24:35" (1/1) ... [2019-11-07 02:24:35,170 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:24:35" (1/1) ... [2019-11-07 02:24:35,271 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:24:35" (1/1) ... [2019-11-07 02:24:35,286 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:24:35" (1/1) ... [2019-11-07 02:24:35,309 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:24:35" (1/1) ... [2019-11-07 02:24:35,337 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 02:24:35,337 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 02:24:35,338 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 02:24:35,340 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 02:24:35,342 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:24:35" (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 02:24:35,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 02:24:35,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 02:24:35,443 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2019-11-07 02:24:35,443 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2019-11-07 02:24:35,444 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2019-11-07 02:24:35,445 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2019-11-07 02:24:35,446 INFO L138 BoogieDeclarations]: Found implementation of procedure iminor [2019-11-07 02:24:35,447 INFO L138 BoogieDeclarations]: Found implementation of procedure register_chrdev [2019-11-07 02:24:35,447 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_chrdev [2019-11-07 02:24:35,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2019-11-07 02:24:35,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-11-07 02:24:35,449 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2019-11-07 02:24:35,449 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2019-11-07 02:24:35,449 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2019-11-07 02:24:35,450 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2019-11-07 02:24:35,450 INFO L138 BoogieDeclarations]: Found implementation of procedure pg_init_units [2019-11-07 02:24:35,453 INFO L138 BoogieDeclarations]: Found implementation of procedure status_reg [2019-11-07 02:24:35,454 INFO L138 BoogieDeclarations]: Found implementation of procedure read_reg [2019-11-07 02:24:35,454 INFO L138 BoogieDeclarations]: Found implementation of procedure write_reg [2019-11-07 02:24:35,455 INFO L138 BoogieDeclarations]: Found implementation of procedure DRIVE [2019-11-07 02:24:35,455 INFO L138 BoogieDeclarations]: Found implementation of procedure pg_sleep [2019-11-07 02:24:35,455 INFO L138 BoogieDeclarations]: Found implementation of procedure pg_wait [2019-11-07 02:24:35,456 INFO L138 BoogieDeclarations]: Found implementation of procedure pg_command [2019-11-07 02:24:35,456 INFO L138 BoogieDeclarations]: Found implementation of procedure pg_completion [2019-11-07 02:24:35,456 INFO L138 BoogieDeclarations]: Found implementation of procedure pg_reset [2019-11-07 02:24:35,456 INFO L138 BoogieDeclarations]: Found implementation of procedure xs [2019-11-07 02:24:35,457 INFO L138 BoogieDeclarations]: Found implementation of procedure pg_identify [2019-11-07 02:24:35,457 INFO L138 BoogieDeclarations]: Found implementation of procedure pg_probe [2019-11-07 02:24:35,457 INFO L138 BoogieDeclarations]: Found implementation of procedure pg_detect [2019-11-07 02:24:35,457 INFO L138 BoogieDeclarations]: Found implementation of procedure pg_open [2019-11-07 02:24:35,458 INFO L138 BoogieDeclarations]: Found implementation of procedure pg_release [2019-11-07 02:24:35,459 INFO L138 BoogieDeclarations]: Found implementation of procedure pg_write [2019-11-07 02:24:35,459 INFO L138 BoogieDeclarations]: Found implementation of procedure pg_read [2019-11-07 02:24:35,459 INFO L138 BoogieDeclarations]: Found implementation of procedure pg_init [2019-11-07 02:24:35,460 INFO L138 BoogieDeclarations]: Found implementation of procedure pg_exit [2019-11-07 02:24:35,460 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 02:24:35,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_1 [2019-11-07 02:24:35,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_2 [2019-11-07 02:24:35,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_3 [2019-11-07 02:24:35,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_4 [2019-11-07 02:24:35,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_5 [2019-11-07 02:24:35,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_6 [2019-11-07 02:24:35,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_7 [2019-11-07 02:24:35,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_8 [2019-11-07 02:24:35,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_9 [2019-11-07 02:24:35,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_register_chrdev_10 [2019-11-07 02:24:35,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_chrdev_11 [2019-11-07 02:24:35,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2019-11-07 02:24:35,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2019-11-07 02:24:35,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2019-11-07 02:24:35,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_cred_guard_mutex_of_signal_struct [2019-11-07 02:24:35,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_killable_cred_guard_mutex_of_signal_struct [2019-11-07 02:24:35,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_cred_guard_mutex_of_signal_struct [2019-11-07 02:24:35,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_cred_guard_mutex_of_signal_struct [2019-11-07 02:24:35,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_dec_and_mutex_lock_cred_guard_mutex_of_signal_struct [2019-11-07 02:24:35,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_is_locked_cred_guard_mutex_of_signal_struct [2019-11-07 02:24:35,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_cred_guard_mutex_of_signal_struct [2019-11-07 02:24:35,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_lock [2019-11-07 02:24:35,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_killable_lock [2019-11-07 02:24:35,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock [2019-11-07 02:24:35,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_lock [2019-11-07 02:24:35,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_dec_and_mutex_lock_lock [2019-11-07 02:24:35,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_is_locked_lock [2019-11-07 02:24:35,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock [2019-11-07 02:24:35,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_mutex_of_device [2019-11-07 02:24:35,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_killable_mutex_of_device [2019-11-07 02:24:35,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex_of_device [2019-11-07 02:24:35,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_mutex_of_device [2019-11-07 02:24:35,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_dec_and_mutex_lock_mutex_of_device [2019-11-07 02:24:35,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_is_locked_mutex_of_device [2019-11-07 02:24:35,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex_of_device [2019-11-07 02:24:35,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_pg_mutex [2019-11-07 02:24:35,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_killable_pg_mutex [2019-11-07 02:24:35,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_pg_mutex [2019-11-07 02:24:35,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_pg_mutex [2019-11-07 02:24:35,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_dec_and_mutex_lock_pg_mutex [2019-11-07 02:24:35,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_is_locked_pg_mutex [2019-11-07 02:24:35,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_pg_mutex [2019-11-07 02:24:35,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-11-07 02:24:35,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-11-07 02:24:35,474 INFO L138 BoogieDeclarations]: Found implementation of procedure __class_create [2019-11-07 02:24:35,475 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2019-11-07 02:24:35,475 INFO L138 BoogieDeclarations]: Found implementation of procedure __register_chrdev [2019-11-07 02:24:35,476 INFO L138 BoogieDeclarations]: Found implementation of procedure __unregister_chrdev [2019-11-07 02:24:35,476 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2019-11-07 02:24:35,476 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2019-11-07 02:24:35,477 INFO L138 BoogieDeclarations]: Found implementation of procedure class_destroy [2019-11-07 02:24:35,477 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create [2019-11-07 02:24:35,477 INFO L138 BoogieDeclarations]: Found implementation of procedure device_destroy [2019-11-07 02:24:35,477 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2019-11-07 02:24:35,521 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2019-11-07 02:24:35,521 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_trylock [2019-11-07 02:24:35,521 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2019-11-07 02:24:35,522 INFO L138 BoogieDeclarations]: Found implementation of procedure noop_llseek [2019-11-07 02:24:35,522 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_connect [2019-11-07 02:24:35,523 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_disconnect [2019-11-07 02:24:35,523 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_init [2019-11-07 02:24:35,523 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_read_block [2019-11-07 02:24:35,523 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_read_regr [2019-11-07 02:24:35,523 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_release [2019-11-07 02:24:35,524 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_write_block [2019-11-07 02:24:35,524 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_write_regr [2019-11-07 02:24:35,524 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2019-11-07 02:24:35,524 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout_interruptible [2019-11-07 02:24:35,525 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_fmt [2019-11-07 02:24:35,525 INFO L138 BoogieDeclarations]: Found implementation of procedure external_alloc [2019-11-07 02:24:35,525 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2019-11-07 02:24:35,525 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2019-11-07 02:24:35,526 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 02:24:35,526 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 02:24:35,527 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2019-11-07 02:24:35,527 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2019-11-07 02:24:35,527 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2019-11-07 02:24:35,528 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2019-11-07 02:24:35,528 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2019-11-07 02:24:35,528 INFO L130 BoogieDeclarations]: Found specification of procedure snprintf [2019-11-07 02:24:35,529 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2019-11-07 02:24:35,529 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2019-11-07 02:24:35,529 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_fmt [2019-11-07 02:24:35,529 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2019-11-07 02:24:35,530 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2019-11-07 02:24:35,530 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_trylock [2019-11-07 02:24:35,531 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_4 [2019-11-07 02:24:35,531 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2019-11-07 02:24:35,532 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_2 [2019-11-07 02:24:35,532 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_5 [2019-11-07 02:24:35,532 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_7 [2019-11-07 02:24:35,533 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_9 [2019-11-07 02:24:35,533 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2019-11-07 02:24:35,533 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_1 [2019-11-07 02:24:35,533 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_3 [2019-11-07 02:24:35,534 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_6 [2019-11-07 02:24:35,534 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_8 [2019-11-07 02:24:35,535 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_cred_guard_mutex_of_signal_struct [2019-11-07 02:24:35,539 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_cred_guard_mutex_of_signal_struct [2019-11-07 02:24:35,539 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock [2019-11-07 02:24:35,539 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock [2019-11-07 02:24:35,540 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex_of_device [2019-11-07 02:24:35,541 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_mutex_of_device [2019-11-07 02:24:35,541 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex_of_device [2019-11-07 02:24:35,541 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_pg_mutex [2019-11-07 02:24:35,541 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_pg_mutex [2019-11-07 02:24:35,541 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 02:24:35,542 INFO L130 BoogieDeclarations]: Found specification of procedure iminor [2019-11-07 02:24:35,548 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 02:24:35,548 INFO L130 BoogieDeclarations]: Found specification of procedure __register_chrdev [2019-11-07 02:24:35,549 INFO L130 BoogieDeclarations]: Found specification of procedure __unregister_chrdev [2019-11-07 02:24:35,549 INFO L130 BoogieDeclarations]: Found specification of procedure register_chrdev [2019-11-07 02:24:35,549 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_register_chrdev_10 [2019-11-07 02:24:35,549 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_chrdev [2019-11-07 02:24:35,549 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_chrdev_11 [2019-11-07 02:24:35,550 INFO L130 BoogieDeclarations]: Found specification of procedure noop_llseek [2019-11-07 02:24:35,550 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2019-11-07 02:24:35,550 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-11-07 02:24:35,550 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-07 02:24:35,551 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 02:24:35,555 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2019-11-07 02:24:35,555 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-11-07 02:24:35,555 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 02:24:35,555 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2019-11-07 02:24:35,556 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2019-11-07 02:24:35,556 INFO L130 BoogieDeclarations]: Found specification of procedure __class_create [2019-11-07 02:24:35,556 INFO L130 BoogieDeclarations]: Found specification of procedure class_destroy [2019-11-07 02:24:35,556 INFO L130 BoogieDeclarations]: Found specification of procedure device_create [2019-11-07 02:24:35,556 INFO L130 BoogieDeclarations]: Found specification of procedure device_destroy [2019-11-07 02:24:35,557 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout_interruptible [2019-11-07 02:24:35,557 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2019-11-07 02:24:35,557 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2019-11-07 02:24:35,557 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2019-11-07 02:24:35,558 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2019-11-07 02:24:35,558 INFO L130 BoogieDeclarations]: Found specification of procedure pi_init [2019-11-07 02:24:35,558 INFO L130 BoogieDeclarations]: Found specification of procedure pi_release [2019-11-07 02:24:35,558 INFO L130 BoogieDeclarations]: Found specification of procedure pi_write_regr [2019-11-07 02:24:35,558 INFO L130 BoogieDeclarations]: Found specification of procedure pi_read_regr [2019-11-07 02:24:35,559 INFO L130 BoogieDeclarations]: Found specification of procedure pi_write_block [2019-11-07 02:24:35,559 INFO L130 BoogieDeclarations]: Found specification of procedure pi_read_block [2019-11-07 02:24:35,559 INFO L130 BoogieDeclarations]: Found specification of procedure pi_connect [2019-11-07 02:24:35,559 INFO L130 BoogieDeclarations]: Found specification of procedure pi_disconnect [2019-11-07 02:24:35,559 INFO L130 BoogieDeclarations]: Found specification of procedure pg_open [2019-11-07 02:24:35,560 INFO L130 BoogieDeclarations]: Found specification of procedure pg_release [2019-11-07 02:24:35,560 INFO L130 BoogieDeclarations]: Found specification of procedure pg_read [2019-11-07 02:24:35,560 INFO L130 BoogieDeclarations]: Found specification of procedure pg_write [2019-11-07 02:24:35,560 INFO L130 BoogieDeclarations]: Found specification of procedure pg_detect [2019-11-07 02:24:35,561 INFO L130 BoogieDeclarations]: Found specification of procedure pg_identify [2019-11-07 02:24:35,561 INFO L130 BoogieDeclarations]: Found specification of procedure pg_init_units [2019-11-07 02:24:35,561 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 02:24:35,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 02:24:35,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 02:24:35,562 INFO L130 BoogieDeclarations]: Found specification of procedure status_reg [2019-11-07 02:24:35,562 INFO L130 BoogieDeclarations]: Found specification of procedure read_reg [2019-11-07 02:24:35,562 INFO L130 BoogieDeclarations]: Found specification of procedure write_reg [2019-11-07 02:24:35,562 INFO L130 BoogieDeclarations]: Found specification of procedure DRIVE [2019-11-07 02:24:35,562 INFO L130 BoogieDeclarations]: Found specification of procedure pg_sleep [2019-11-07 02:24:35,563 INFO L130 BoogieDeclarations]: Found specification of procedure pg_wait [2019-11-07 02:24:35,563 INFO L130 BoogieDeclarations]: Found specification of procedure pg_command [2019-11-07 02:24:35,563 INFO L130 BoogieDeclarations]: Found specification of procedure pg_completion [2019-11-07 02:24:35,563 INFO L130 BoogieDeclarations]: Found specification of procedure pg_reset [2019-11-07 02:24:35,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 02:24:35,564 INFO L130 BoogieDeclarations]: Found specification of procedure xs [2019-11-07 02:24:35,564 INFO L130 BoogieDeclarations]: Found specification of procedure pg_probe [2019-11-07 02:24:35,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2019-11-07 02:24:35,564 INFO L130 BoogieDeclarations]: Found specification of procedure pg_init [2019-11-07 02:24:35,565 INFO L130 BoogieDeclarations]: Found specification of procedure pg_exit [2019-11-07 02:24:35,565 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-11-07 02:24:35,565 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-11-07 02:24:35,565 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 02:24:35,566 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2019-11-07 02:24:35,566 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2019-11-07 02:24:35,566 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_cred_guard_mutex_of_signal_struct [2019-11-07 02:24:35,566 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_killable_cred_guard_mutex_of_signal_struct [2019-11-07 02:24:35,566 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_cred_guard_mutex_of_signal_struct [2019-11-07 02:24:35,567 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_dec_and_mutex_lock_cred_guard_mutex_of_signal_struct [2019-11-07 02:24:35,567 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_is_locked_cred_guard_mutex_of_signal_struct [2019-11-07 02:24:35,567 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_lock [2019-11-07 02:24:35,567 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_killable_lock [2019-11-07 02:24:35,567 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_lock [2019-11-07 02:24:35,567 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_dec_and_mutex_lock_lock [2019-11-07 02:24:35,568 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_is_locked_lock [2019-11-07 02:24:35,568 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_mutex_of_device [2019-11-07 02:24:35,568 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_killable_mutex_of_device [2019-11-07 02:24:35,568 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_dec_and_mutex_lock_mutex_of_device [2019-11-07 02:24:35,568 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_is_locked_mutex_of_device [2019-11-07 02:24:35,569 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_pg_mutex [2019-11-07 02:24:35,569 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_killable_pg_mutex [2019-11-07 02:24:35,569 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_pg_mutex [2019-11-07 02:24:35,569 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_dec_and_mutex_lock_pg_mutex [2019-11-07 02:24:35,570 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_is_locked_pg_mutex [2019-11-07 02:24:35,570 INFO L130 BoogieDeclarations]: Found specification of procedure external_alloc [2019-11-07 02:24:35,570 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2019-11-07 02:24:35,570 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2019-11-07 02:24:35,570 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-11-07 02:24:35,571 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 02:24:35,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 02:24:35,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 02:24:35,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-07 02:24:35,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 02:24:40,145 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 02:24:40,145 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-11-07 02:24:40,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:24:40 BoogieIcfgContainer [2019-11-07 02:24:40,148 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 02:24:40,149 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 02:24:40,149 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 02:24:40,152 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 02:24:40,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:24:33" (1/3) ... [2019-11-07 02:24:40,153 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ef76013 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:24:40, skipping insertion in model container [2019-11-07 02:24:40,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:24:35" (2/3) ... [2019-11-07 02:24:40,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ef76013 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:24:40, skipping insertion in model container [2019-11-07 02:24:40,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:24:40" (3/3) ... [2019-11-07 02:24:40,156 INFO L109 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pg.ko-main.cil.out.i [2019-11-07 02:24:40,168 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 02:24:40,182 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 02:24:40,195 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 02:24:40,236 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 02:24:40,236 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 02:24:40,236 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 02:24:40,236 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 02:24:40,237 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 02:24:40,237 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 02:24:40,237 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 02:24:40,237 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 02:24:40,282 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states. [2019-11-07 02:24:40,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-11-07 02:24:40,292 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:24:40,293 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 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 02:24:40,295 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:24:40,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:24:40,301 INFO L82 PathProgramCache]: Analyzing trace with hash -1809528212, now seen corresponding path program 1 times [2019-11-07 02:24:40,310 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:24:40,310 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804904446] [2019-11-07 02:24:40,310 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:24:40,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:24:40,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 02:24:40,876 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804904446] [2019-11-07 02:24:40,876 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 02:24:40,877 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 02:24:40,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872985434] [2019-11-07 02:24:40,883 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 02:24:40,883 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:24:40,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 02:24:40,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 02:24:40,902 INFO L87 Difference]: Start difference. First operand 552 states. Second operand 4 states. [2019-11-07 02:24:41,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 02:24:41,890 INFO L93 Difference]: Finished difference Result 958 states and 1262 transitions. [2019-11-07 02:24:41,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 02:24:41,894 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2019-11-07 02:24:41,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 02:24:41,916 INFO L225 Difference]: With dead ends: 958 [2019-11-07 02:24:41,917 INFO L226 Difference]: Without dead ends: 477 [2019-11-07 02:24:41,927 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 02:24:41,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2019-11-07 02:24:42,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 477. [2019-11-07 02:24:42,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 477 states. [2019-11-07 02:24:42,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 618 transitions. [2019-11-07 02:24:42,028 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 618 transitions. Word has length 27 [2019-11-07 02:24:42,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 02:24:42,028 INFO L462 AbstractCegarLoop]: Abstraction has 477 states and 618 transitions. [2019-11-07 02:24:42,028 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 02:24:42,029 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 618 transitions. [2019-11-07 02:24:42,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-11-07 02:24:42,032 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:24:42,032 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 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 02:24:42,032 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:24:42,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:24:42,033 INFO L82 PathProgramCache]: Analyzing trace with hash -196163103, now seen corresponding path program 1 times [2019-11-07 02:24:42,033 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:24:42,033 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136836589] [2019-11-07 02:24:42,034 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:24:42,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:24:42,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 02:24:42,204 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136836589] [2019-11-07 02:24:42,204 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 02:24:42,205 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 02:24:42,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034993362] [2019-11-07 02:24:42,207 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 02:24:42,207 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:24:42,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 02:24:42,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 02:24:42,208 INFO L87 Difference]: Start difference. First operand 477 states and 618 transitions. Second operand 3 states. [2019-11-07 02:24:42,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 02:24:42,399 INFO L93 Difference]: Finished difference Result 1202 states and 1566 transitions. [2019-11-07 02:24:42,400 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 02:24:42,400 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2019-11-07 02:24:42,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 02:24:42,407 INFO L225 Difference]: With dead ends: 1202 [2019-11-07 02:24:42,407 INFO L226 Difference]: Without dead ends: 734 [2019-11-07 02:24:42,411 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 02:24:42,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 734 states. [2019-11-07 02:24:42,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 734 to 692. [2019-11-07 02:24:42,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 692 states. [2019-11-07 02:24:42,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 907 transitions. [2019-11-07 02:24:42,478 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 907 transitions. Word has length 31 [2019-11-07 02:24:42,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 02:24:42,479 INFO L462 AbstractCegarLoop]: Abstraction has 692 states and 907 transitions. [2019-11-07 02:24:42,479 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 02:24:42,479 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 907 transitions. [2019-11-07 02:24:42,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-11-07 02:24:42,481 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:24:42,481 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:24:42,482 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:24:42,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:24:42,482 INFO L82 PathProgramCache]: Analyzing trace with hash -1571763004, now seen corresponding path program 1 times [2019-11-07 02:24:42,482 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:24:42,482 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511451182] [2019-11-07 02:24:42,483 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:24:42,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:24:42,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 02:24:42,633 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511451182] [2019-11-07 02:24:42,633 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 02:24:42,633 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 02:24:42,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832068518] [2019-11-07 02:24:42,634 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 02:24:42,635 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:24:42,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 02:24:42,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 02:24:42,635 INFO L87 Difference]: Start difference. First operand 692 states and 907 transitions. Second operand 3 states. [2019-11-07 02:24:42,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 02:24:42,714 INFO L93 Difference]: Finished difference Result 1381 states and 1821 transitions. [2019-11-07 02:24:42,715 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 02:24:42,715 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2019-11-07 02:24:42,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 02:24:42,723 INFO L225 Difference]: With dead ends: 1381 [2019-11-07 02:24:42,723 INFO L226 Difference]: Without dead ends: 698 [2019-11-07 02:24:42,726 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 02:24:42,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2019-11-07 02:24:42,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 694. [2019-11-07 02:24:42,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 694 states. [2019-11-07 02:24:42,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 909 transitions. [2019-11-07 02:24:42,792 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 909 transitions. Word has length 38 [2019-11-07 02:24:42,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 02:24:42,792 INFO L462 AbstractCegarLoop]: Abstraction has 694 states and 909 transitions. [2019-11-07 02:24:42,792 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 02:24:42,793 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 909 transitions. [2019-11-07 02:24:42,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-11-07 02:24:42,801 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:24:42,801 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:24:42,801 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:24:42,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:24:42,801 INFO L82 PathProgramCache]: Analyzing trace with hash 1304531917, now seen corresponding path program 1 times [2019-11-07 02:24:42,802 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:24:42,802 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066630897] [2019-11-07 02:24:42,802 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:24:42,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:24:42,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 02:24:42,937 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066630897] [2019-11-07 02:24:42,937 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 02:24:42,937 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 02:24:42,937 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532027289] [2019-11-07 02:24:42,938 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 02:24:42,938 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:24:42,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 02:24:42,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 02:24:42,939 INFO L87 Difference]: Start difference. First operand 694 states and 909 transitions. Second operand 3 states. [2019-11-07 02:24:43,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 02:24:43,166 INFO L93 Difference]: Finished difference Result 1548 states and 2025 transitions. [2019-11-07 02:24:43,166 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 02:24:43,166 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2019-11-07 02:24:43,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 02:24:43,172 INFO L225 Difference]: With dead ends: 1548 [2019-11-07 02:24:43,172 INFO L226 Difference]: Without dead ends: 863 [2019-11-07 02:24:43,175 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 02:24:43,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2019-11-07 02:24:43,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 863. [2019-11-07 02:24:43,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 863 states. [2019-11-07 02:24:43,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 863 states to 863 states and 1122 transitions. [2019-11-07 02:24:43,232 INFO L78 Accepts]: Start accepts. Automaton has 863 states and 1122 transitions. Word has length 40 [2019-11-07 02:24:43,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 02:24:43,233 INFO L462 AbstractCegarLoop]: Abstraction has 863 states and 1122 transitions. [2019-11-07 02:24:43,233 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 02:24:43,233 INFO L276 IsEmpty]: Start isEmpty. Operand 863 states and 1122 transitions. [2019-11-07 02:24:43,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-11-07 02:24:43,236 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:24:43,236 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:24:43,236 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:24:43,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:24:43,237 INFO L82 PathProgramCache]: Analyzing trace with hash -1084538513, now seen corresponding path program 1 times [2019-11-07 02:24:43,237 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:24:43,237 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519654895] [2019-11-07 02:24:43,237 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:24:43,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:24:43,377 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-07 02:24:43,377 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519654895] [2019-11-07 02:24:43,377 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 02:24:43,378 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 02:24:43,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188680311] [2019-11-07 02:24:43,381 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 02:24:43,382 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:24:43,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 02:24:43,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 02:24:43,382 INFO L87 Difference]: Start difference. First operand 863 states and 1122 transitions. Second operand 3 states. [2019-11-07 02:24:43,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 02:24:43,721 INFO L93 Difference]: Finished difference Result 865 states and 1123 transitions. [2019-11-07 02:24:43,722 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 02:24:43,722 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2019-11-07 02:24:43,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 02:24:43,730 INFO L225 Difference]: With dead ends: 865 [2019-11-07 02:24:43,730 INFO L226 Difference]: Without dead ends: 862 [2019-11-07 02:24:43,731 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 02:24:43,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 862 states. [2019-11-07 02:24:43,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 862 to 862. [2019-11-07 02:24:43,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 862 states. [2019-11-07 02:24:43,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 862 states to 862 states and 1120 transitions. [2019-11-07 02:24:43,787 INFO L78 Accepts]: Start accepts. Automaton has 862 states and 1120 transitions. Word has length 43 [2019-11-07 02:24:43,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 02:24:43,787 INFO L462 AbstractCegarLoop]: Abstraction has 862 states and 1120 transitions. [2019-11-07 02:24:43,787 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 02:24:43,788 INFO L276 IsEmpty]: Start isEmpty. Operand 862 states and 1120 transitions. [2019-11-07 02:24:43,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2019-11-07 02:24:43,788 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:24:43,789 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:24:43,789 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:24:43,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:24:43,789 INFO L82 PathProgramCache]: Analyzing trace with hash 738650742, now seen corresponding path program 1 times [2019-11-07 02:24:43,790 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:24:43,790 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411731537] [2019-11-07 02:24:43,790 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:24:43,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:24:43,980 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-07 02:24:43,981 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411731537] [2019-11-07 02:24:43,981 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 02:24:43,981 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 02:24:43,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259758698] [2019-11-07 02:24:43,982 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 02:24:43,982 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:24:43,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 02:24:43,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 02:24:43,982 INFO L87 Difference]: Start difference. First operand 862 states and 1120 transitions. Second operand 3 states. [2019-11-07 02:24:44,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 02:24:44,168 INFO L93 Difference]: Finished difference Result 864 states and 1121 transitions. [2019-11-07 02:24:44,168 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 02:24:44,168 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 44 [2019-11-07 02:24:44,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 02:24:44,174 INFO L225 Difference]: With dead ends: 864 [2019-11-07 02:24:44,174 INFO L226 Difference]: Without dead ends: 861 [2019-11-07 02:24:44,175 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 02:24:44,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2019-11-07 02:24:44,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 861. [2019-11-07 02:24:44,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 861 states. [2019-11-07 02:24:44,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1118 transitions. [2019-11-07 02:24:44,230 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1118 transitions. Word has length 44 [2019-11-07 02:24:44,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 02:24:44,231 INFO L462 AbstractCegarLoop]: Abstraction has 861 states and 1118 transitions. [2019-11-07 02:24:44,231 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 02:24:44,232 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1118 transitions. [2019-11-07 02:24:44,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-11-07 02:24:44,233 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:24:44,234 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:24:44,234 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:24:44,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:24:44,234 INFO L82 PathProgramCache]: Analyzing trace with hash 1422947666, now seen corresponding path program 1 times [2019-11-07 02:24:44,234 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:24:44,235 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644001039] [2019-11-07 02:24:44,235 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:24:44,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:24:44,357 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-07 02:24:44,359 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644001039] [2019-11-07 02:24:44,360 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 02:24:44,360 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 02:24:44,360 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174453858] [2019-11-07 02:24:44,361 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 02:24:44,361 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:24:44,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 02:24:44,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 02:24:44,361 INFO L87 Difference]: Start difference. First operand 861 states and 1118 transitions. Second operand 3 states. [2019-11-07 02:24:44,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 02:24:44,543 INFO L93 Difference]: Finished difference Result 863 states and 1119 transitions. [2019-11-07 02:24:44,544 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 02:24:44,544 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 45 [2019-11-07 02:24:44,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 02:24:44,550 INFO L225 Difference]: With dead ends: 863 [2019-11-07 02:24:44,550 INFO L226 Difference]: Without dead ends: 860 [2019-11-07 02:24:44,551 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 02:24:44,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 860 states. [2019-11-07 02:24:44,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 860 to 860. [2019-11-07 02:24:44,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 860 states. [2019-11-07 02:24:44,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 860 states to 860 states and 1116 transitions. [2019-11-07 02:24:44,607 INFO L78 Accepts]: Start accepts. Automaton has 860 states and 1116 transitions. Word has length 45 [2019-11-07 02:24:44,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 02:24:44,608 INFO L462 AbstractCegarLoop]: Abstraction has 860 states and 1116 transitions. [2019-11-07 02:24:44,608 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 02:24:44,608 INFO L276 IsEmpty]: Start isEmpty. Operand 860 states and 1116 transitions. [2019-11-07 02:24:44,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-11-07 02:24:44,609 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:24:44,609 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:24:44,609 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:24:44,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:24:44,610 INFO L82 PathProgramCache]: Analyzing trace with hash 1161320697, now seen corresponding path program 1 times [2019-11-07 02:24:44,610 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:24:44,611 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622007498] [2019-11-07 02:24:44,611 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:24:44,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:24:44,720 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-07 02:24:44,721 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622007498] [2019-11-07 02:24:44,721 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 02:24:44,721 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 02:24:44,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910591679] [2019-11-07 02:24:44,723 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 02:24:44,723 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:24:44,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 02:24:44,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 02:24:44,727 INFO L87 Difference]: Start difference. First operand 860 states and 1116 transitions. Second operand 3 states. [2019-11-07 02:24:44,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 02:24:44,973 INFO L93 Difference]: Finished difference Result 991 states and 1283 transitions. [2019-11-07 02:24:44,973 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 02:24:44,974 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2019-11-07 02:24:44,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 02:24:44,984 INFO L225 Difference]: With dead ends: 991 [2019-11-07 02:24:44,984 INFO L226 Difference]: Without dead ends: 950 [2019-11-07 02:24:44,986 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 02:24:44,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 950 states. [2019-11-07 02:24:45,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 950 to 950. [2019-11-07 02:24:45,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 950 states. [2019-11-07 02:24:45,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 1234 transitions. [2019-11-07 02:24:45,067 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 1234 transitions. Word has length 46 [2019-11-07 02:24:45,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 02:24:45,070 INFO L462 AbstractCegarLoop]: Abstraction has 950 states and 1234 transitions. [2019-11-07 02:24:45,070 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 02:24:45,070 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 1234 transitions. [2019-11-07 02:24:45,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-11-07 02:24:45,077 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:24:45,077 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 02:24:45,078 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:24:45,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:24:45,078 INFO L82 PathProgramCache]: Analyzing trace with hash 1346056143, now seen corresponding path program 1 times [2019-11-07 02:24:45,079 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:24:45,079 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863392439] [2019-11-07 02:24:45,079 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:24:45,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:24:45,267 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-07 02:24:45,267 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863392439] [2019-11-07 02:24:45,268 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 02:24:45,268 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 02:24:45,268 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944417892] [2019-11-07 02:24:45,269 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 02:24:45,269 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:24:45,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 02:24:45,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 02:24:45,269 INFO L87 Difference]: Start difference. First operand 950 states and 1234 transitions. Second operand 6 states. [2019-11-07 02:24:45,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 02:24:45,462 INFO L93 Difference]: Finished difference Result 1916 states and 2500 transitions. [2019-11-07 02:24:45,462 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 02:24:45,463 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 89 [2019-11-07 02:24:45,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 02:24:45,471 INFO L225 Difference]: With dead ends: 1916 [2019-11-07 02:24:45,471 INFO L226 Difference]: Without dead ends: 984 [2019-11-07 02:24:45,476 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-07 02:24:45,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 984 states. [2019-11-07 02:24:45,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 984 to 984. [2019-11-07 02:24:45,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 984 states. [2019-11-07 02:24:45,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 984 states to 984 states and 1282 transitions. [2019-11-07 02:24:45,534 INFO L78 Accepts]: Start accepts. Automaton has 984 states and 1282 transitions. Word has length 89 [2019-11-07 02:24:45,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 02:24:45,534 INFO L462 AbstractCegarLoop]: Abstraction has 984 states and 1282 transitions. [2019-11-07 02:24:45,534 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 02:24:45,534 INFO L276 IsEmpty]: Start isEmpty. Operand 984 states and 1282 transitions. [2019-11-07 02:24:45,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-11-07 02:24:45,536 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:24:45,536 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 02:24:45,537 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:24:45,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:24:45,537 INFO L82 PathProgramCache]: Analyzing trace with hash -1383285675, now seen corresponding path program 1 times [2019-11-07 02:24:45,537 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:24:45,537 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998294640] [2019-11-07 02:24:45,538 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:24:45,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:24:45,688 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-07 02:24:45,689 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998294640] [2019-11-07 02:24:45,689 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 02:24:45,689 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 02:24:45,690 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805230536] [2019-11-07 02:24:45,691 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 02:24:45,691 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:24:45,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 02:24:45,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 02:24:45,692 INFO L87 Difference]: Start difference. First operand 984 states and 1282 transitions. Second operand 4 states. [2019-11-07 02:24:46,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 02:24:46,440 INFO L93 Difference]: Finished difference Result 1956 states and 2568 transitions. [2019-11-07 02:24:46,440 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 02:24:46,441 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 104 [2019-11-07 02:24:46,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 02:24:46,447 INFO L225 Difference]: With dead ends: 1956 [2019-11-07 02:24:46,447 INFO L226 Difference]: Without dead ends: 990 [2019-11-07 02:24:46,453 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-07 02:24:46,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 990 states. [2019-11-07 02:24:46,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 990 to 988. [2019-11-07 02:24:46,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 988 states. [2019-11-07 02:24:46,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 988 states to 988 states and 1286 transitions. [2019-11-07 02:24:46,517 INFO L78 Accepts]: Start accepts. Automaton has 988 states and 1286 transitions. Word has length 104 [2019-11-07 02:24:46,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 02:24:46,517 INFO L462 AbstractCegarLoop]: Abstraction has 988 states and 1286 transitions. [2019-11-07 02:24:46,517 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 02:24:46,517 INFO L276 IsEmpty]: Start isEmpty. Operand 988 states and 1286 transitions. [2019-11-07 02:24:46,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2019-11-07 02:24:46,526 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:24:46,526 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 02:24:46,526 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:24:46,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:24:46,527 INFO L82 PathProgramCache]: Analyzing trace with hash 400440286, now seen corresponding path program 1 times [2019-11-07 02:24:46,527 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:24:46,527 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578003992] [2019-11-07 02:24:46,527 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:24:46,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:24:46,681 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-11-07 02:24:46,681 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578003992] [2019-11-07 02:24:46,682 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 02:24:46,682 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 02:24:46,682 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469521070] [2019-11-07 02:24:46,683 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 02:24:46,683 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:24:46,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 02:24:46,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 02:24:46,684 INFO L87 Difference]: Start difference. First operand 988 states and 1286 transitions. Second operand 4 states. [2019-11-07 02:24:46,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 02:24:46,783 INFO L93 Difference]: Finished difference Result 2026 states and 2681 transitions. [2019-11-07 02:24:46,784 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 02:24:46,784 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 147 [2019-11-07 02:24:46,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 02:24:46,793 INFO L225 Difference]: With dead ends: 2026 [2019-11-07 02:24:46,794 INFO L226 Difference]: Without dead ends: 1056 [2019-11-07 02:24:46,800 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 02:24:46,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1056 states. [2019-11-07 02:24:46,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1056 to 996. [2019-11-07 02:24:46,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 996 states. [2019-11-07 02:24:46,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 996 states to 996 states and 1294 transitions. [2019-11-07 02:24:46,967 INFO L78 Accepts]: Start accepts. Automaton has 996 states and 1294 transitions. Word has length 147 [2019-11-07 02:24:46,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 02:24:46,967 INFO L462 AbstractCegarLoop]: Abstraction has 996 states and 1294 transitions. [2019-11-07 02:24:46,968 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 02:24:46,968 INFO L276 IsEmpty]: Start isEmpty. Operand 996 states and 1294 transitions. [2019-11-07 02:24:46,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2019-11-07 02:24:46,972 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:24:46,973 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 02:24:46,973 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:24:46,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:24:46,974 INFO L82 PathProgramCache]: Analyzing trace with hash 412473398, now seen corresponding path program 1 times [2019-11-07 02:24:46,974 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:24:46,974 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918536136] [2019-11-07 02:24:46,974 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:24:47,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:24:47,126 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-11-07 02:24:47,126 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918536136] [2019-11-07 02:24:47,127 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 02:24:47,127 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 02:24:47,127 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082211214] [2019-11-07 02:24:47,128 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 02:24:47,128 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:24:47,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 02:24:47,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 02:24:47,129 INFO L87 Difference]: Start difference. First operand 996 states and 1294 transitions. Second operand 3 states. [2019-11-07 02:24:47,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 02:24:47,204 INFO L93 Difference]: Finished difference Result 1990 states and 2619 transitions. [2019-11-07 02:24:47,205 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 02:24:47,205 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 156 [2019-11-07 02:24:47,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 02:24:47,212 INFO L225 Difference]: With dead ends: 1990 [2019-11-07 02:24:47,212 INFO L226 Difference]: Without dead ends: 1012 [2019-11-07 02:24:47,217 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 02:24:47,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2019-11-07 02:24:47,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 1004. [2019-11-07 02:24:47,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1004 states. [2019-11-07 02:24:47,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1004 states to 1004 states and 1302 transitions. [2019-11-07 02:24:47,275 INFO L78 Accepts]: Start accepts. Automaton has 1004 states and 1302 transitions. Word has length 156 [2019-11-07 02:24:47,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 02:24:47,276 INFO L462 AbstractCegarLoop]: Abstraction has 1004 states and 1302 transitions. [2019-11-07 02:24:47,276 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 02:24:47,276 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states and 1302 transitions. [2019-11-07 02:24:47,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2019-11-07 02:24:47,280 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:24:47,280 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 02:24:47,280 INFO L410 AbstractCegarLoop]: === Iteration 13 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:24:47,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:24:47,281 INFO L82 PathProgramCache]: Analyzing trace with hash 1369600157, now seen corresponding path program 1 times [2019-11-07 02:24:47,281 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:24:47,281 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859794108] [2019-11-07 02:24:47,281 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:24:47,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:24:47,454 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-07 02:24:47,454 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859794108] [2019-11-07 02:24:47,454 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 02:24:47,455 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 02:24:47,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200925452] [2019-11-07 02:24:47,456 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 02:24:47,456 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:24:47,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 02:24:47,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 02:24:47,457 INFO L87 Difference]: Start difference. First operand 1004 states and 1302 transitions. Second operand 5 states. [2019-11-07 02:24:47,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 02:24:47,528 INFO L93 Difference]: Finished difference Result 2006 states and 2612 transitions. [2019-11-07 02:24:47,529 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 02:24:47,529 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 165 [2019-11-07 02:24:47,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 02:24:47,535 INFO L225 Difference]: With dead ends: 2006 [2019-11-07 02:24:47,535 INFO L226 Difference]: Without dead ends: 1020 [2019-11-07 02:24:47,540 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 02:24:47,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1020 states. [2019-11-07 02:24:47,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1020 to 1012. [2019-11-07 02:24:47,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1012 states. [2019-11-07 02:24:47,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1012 states to 1012 states and 1314 transitions. [2019-11-07 02:24:47,600 INFO L78 Accepts]: Start accepts. Automaton has 1012 states and 1314 transitions. Word has length 165 [2019-11-07 02:24:47,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 02:24:47,600 INFO L462 AbstractCegarLoop]: Abstraction has 1012 states and 1314 transitions. [2019-11-07 02:24:47,601 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 02:24:47,601 INFO L276 IsEmpty]: Start isEmpty. Operand 1012 states and 1314 transitions. [2019-11-07 02:24:47,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2019-11-07 02:24:47,604 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:24:47,605 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 02:24:47,605 INFO L410 AbstractCegarLoop]: === Iteration 14 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:24:47,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:24:47,605 INFO L82 PathProgramCache]: Analyzing trace with hash 915393057, now seen corresponding path program 1 times [2019-11-07 02:24:47,606 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:24:47,610 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377886748] [2019-11-07 02:24:47,611 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:24:47,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:24:47,849 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 02:24:47,849 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377886748] [2019-11-07 02:24:47,850 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 02:24:47,850 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 02:24:47,850 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987132091] [2019-11-07 02:24:47,851 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 02:24:47,851 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:24:47,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 02:24:47,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 02:24:47,851 INFO L87 Difference]: Start difference. First operand 1012 states and 1314 transitions. Second operand 5 states. [2019-11-07 02:24:47,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 02:24:47,957 INFO L93 Difference]: Finished difference Result 2066 states and 2704 transitions. [2019-11-07 02:24:47,957 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 02:24:47,958 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 174 [2019-11-07 02:24:47,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 02:24:47,964 INFO L225 Difference]: With dead ends: 2066 [2019-11-07 02:24:47,965 INFO L226 Difference]: Without dead ends: 1072 [2019-11-07 02:24:47,970 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-07 02:24:47,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1072 states. [2019-11-07 02:24:48,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1072 to 1020. [2019-11-07 02:24:48,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1020 states. [2019-11-07 02:24:48,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1020 states to 1020 states and 1322 transitions. [2019-11-07 02:24:48,033 INFO L78 Accepts]: Start accepts. Automaton has 1020 states and 1322 transitions. Word has length 174 [2019-11-07 02:24:48,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 02:24:48,033 INFO L462 AbstractCegarLoop]: Abstraction has 1020 states and 1322 transitions. [2019-11-07 02:24:48,033 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 02:24:48,034 INFO L276 IsEmpty]: Start isEmpty. Operand 1020 states and 1322 transitions. [2019-11-07 02:24:48,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2019-11-07 02:24:48,037 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:24:48,038 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 02:24:48,038 INFO L410 AbstractCegarLoop]: === Iteration 15 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:24:48,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:24:48,039 INFO L82 PathProgramCache]: Analyzing trace with hash -696453331, now seen corresponding path program 1 times [2019-11-07 02:24:48,039 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:24:48,039 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956109654] [2019-11-07 02:24:48,040 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:24:48,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:24:48,248 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-11-07 02:24:48,248 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956109654] [2019-11-07 02:24:48,248 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 02:24:48,249 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 02:24:48,249 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121366533] [2019-11-07 02:24:48,249 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 02:24:48,250 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:24:48,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 02:24:48,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 02:24:48,250 INFO L87 Difference]: Start difference. First operand 1020 states and 1322 transitions. Second operand 5 states. [2019-11-07 02:24:48,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 02:24:48,331 INFO L93 Difference]: Finished difference Result 2058 states and 2706 transitions. [2019-11-07 02:24:48,331 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 02:24:48,332 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 213 [2019-11-07 02:24:48,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 02:24:48,344 INFO L225 Difference]: With dead ends: 2058 [2019-11-07 02:24:48,344 INFO L226 Difference]: Without dead ends: 1056 [2019-11-07 02:24:48,353 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 02:24:48,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1056 states. [2019-11-07 02:24:48,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1056 to 1036. [2019-11-07 02:24:48,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1036 states. [2019-11-07 02:24:48,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 1350 transitions. [2019-11-07 02:24:48,428 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 1350 transitions. Word has length 213 [2019-11-07 02:24:48,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 02:24:48,429 INFO L462 AbstractCegarLoop]: Abstraction has 1036 states and 1350 transitions. [2019-11-07 02:24:48,429 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 02:24:48,429 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 1350 transitions. [2019-11-07 02:24:48,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2019-11-07 02:24:48,438 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:24:48,438 INFO L410 BasicCegarLoop]: trace histogram [6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 02:24:48,439 INFO L410 AbstractCegarLoop]: === Iteration 16 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:24:48,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:24:48,439 INFO L82 PathProgramCache]: Analyzing trace with hash 1402068112, now seen corresponding path program 1 times [2019-11-07 02:24:48,439 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:24:48,440 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256474587] [2019-11-07 02:24:48,440 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:24:48,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:24:48,939 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2019-11-07 02:24:48,939 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256474587] [2019-11-07 02:24:48,942 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 02:24:48,942 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-11-07 02:24:48,942 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179169728] [2019-11-07 02:24:48,944 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-07 02:24:48,945 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:24:48,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-07 02:24:48,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-11-07 02:24:48,946 INFO L87 Difference]: Start difference. First operand 1036 states and 1350 transitions. Second operand 10 states. [2019-11-07 02:24:49,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 02:24:49,087 INFO L93 Difference]: Finished difference Result 2094 states and 2758 transitions. [2019-11-07 02:24:49,088 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-07 02:24:49,088 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 235 [2019-11-07 02:24:49,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 02:24:49,097 INFO L225 Difference]: With dead ends: 2094 [2019-11-07 02:24:49,097 INFO L226 Difference]: Without dead ends: 1076 [2019-11-07 02:24:49,103 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-11-07 02:24:49,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1076 states. [2019-11-07 02:24:49,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1076 to 1046. [2019-11-07 02:24:49,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1046 states. [2019-11-07 02:24:49,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1046 states to 1046 states and 1362 transitions. [2019-11-07 02:24:49,158 INFO L78 Accepts]: Start accepts. Automaton has 1046 states and 1362 transitions. Word has length 235 [2019-11-07 02:24:49,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 02:24:49,159 INFO L462 AbstractCegarLoop]: Abstraction has 1046 states and 1362 transitions. [2019-11-07 02:24:49,159 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-07 02:24:49,159 INFO L276 IsEmpty]: Start isEmpty. Operand 1046 states and 1362 transitions. [2019-11-07 02:24:49,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2019-11-07 02:24:49,163 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:24:49,163 INFO L410 BasicCegarLoop]: trace histogram [6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 02:24:49,163 INFO L410 AbstractCegarLoop]: === Iteration 17 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:24:49,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:24:49,164 INFO L82 PathProgramCache]: Analyzing trace with hash 1044559062, now seen corresponding path program 1 times [2019-11-07 02:24:49,164 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:24:49,164 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178913329] [2019-11-07 02:24:49,164 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:24:49,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:24:49,437 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2019-11-07 02:24:49,438 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178913329] [2019-11-07 02:24:49,439 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 02:24:49,439 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-11-07 02:24:49,439 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689052956] [2019-11-07 02:24:49,440 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-07 02:24:49,440 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:24:49,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-07 02:24:49,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-11-07 02:24:49,441 INFO L87 Difference]: Start difference. First operand 1046 states and 1362 transitions. Second operand 10 states. [2019-11-07 02:24:49,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 02:24:49,570 INFO L93 Difference]: Finished difference Result 2114 states and 2758 transitions. [2019-11-07 02:24:49,571 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-07 02:24:49,571 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 237 [2019-11-07 02:24:49,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 02:24:49,580 INFO L225 Difference]: With dead ends: 2114 [2019-11-07 02:24:49,580 INFO L226 Difference]: Without dead ends: 1086 [2019-11-07 02:24:49,585 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-11-07 02:24:49,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1086 states. [2019-11-07 02:24:49,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1086 to 1048. [2019-11-07 02:24:49,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1048 states. [2019-11-07 02:24:49,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1048 states to 1048 states and 1364 transitions. [2019-11-07 02:24:49,664 INFO L78 Accepts]: Start accepts. Automaton has 1048 states and 1364 transitions. Word has length 237 [2019-11-07 02:24:49,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 02:24:49,666 INFO L462 AbstractCegarLoop]: Abstraction has 1048 states and 1364 transitions. [2019-11-07 02:24:49,666 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-07 02:24:49,666 INFO L276 IsEmpty]: Start isEmpty. Operand 1048 states and 1364 transitions. [2019-11-07 02:24:49,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2019-11-07 02:24:49,674 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:24:49,675 INFO L410 BasicCegarLoop]: trace histogram [6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:24:49,675 INFO L410 AbstractCegarLoop]: === Iteration 18 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:24:49,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:24:49,676 INFO L82 PathProgramCache]: Analyzing trace with hash 1309145940, now seen corresponding path program 1 times [2019-11-07 02:24:49,676 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:24:49,677 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260730608] [2019-11-07 02:24:49,677 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:24:49,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:24:50,060 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2019-11-07 02:24:50,061 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260730608] [2019-11-07 02:24:50,061 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 02:24:50,061 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-11-07 02:24:50,061 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029153808] [2019-11-07 02:24:50,062 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-07 02:24:50,062 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:24:50,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-07 02:24:50,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-11-07 02:24:50,063 INFO L87 Difference]: Start difference. First operand 1048 states and 1364 transitions. Second operand 10 states. [2019-11-07 02:24:50,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 02:24:50,238 INFO L93 Difference]: Finished difference Result 2160 states and 2838 transitions. [2019-11-07 02:24:50,238 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-07 02:24:50,239 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 244 [2019-11-07 02:24:50,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 02:24:50,245 INFO L225 Difference]: With dead ends: 2160 [2019-11-07 02:24:50,245 INFO L226 Difference]: Without dead ends: 1130 [2019-11-07 02:24:50,250 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2019-11-07 02:24:50,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1130 states. [2019-11-07 02:24:50,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1130 to 1048. [2019-11-07 02:24:50,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1048 states. [2019-11-07 02:24:50,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1048 states to 1048 states and 1364 transitions. [2019-11-07 02:24:50,301 INFO L78 Accepts]: Start accepts. Automaton has 1048 states and 1364 transitions. Word has length 244 [2019-11-07 02:24:50,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 02:24:50,302 INFO L462 AbstractCegarLoop]: Abstraction has 1048 states and 1364 transitions. [2019-11-07 02:24:50,302 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-07 02:24:50,302 INFO L276 IsEmpty]: Start isEmpty. Operand 1048 states and 1364 transitions. [2019-11-07 02:24:50,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2019-11-07 02:24:50,306 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:24:50,306 INFO L410 BasicCegarLoop]: trace histogram [6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:24:50,306 INFO L410 AbstractCegarLoop]: === Iteration 19 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:24:50,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:24:50,307 INFO L82 PathProgramCache]: Analyzing trace with hash 822307866, now seen corresponding path program 1 times [2019-11-07 02:24:50,307 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:24:50,307 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268267470] [2019-11-07 02:24:50,307 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:24:50,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:24:50,579 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2019-11-07 02:24:50,580 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268267470] [2019-11-07 02:24:50,580 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 02:24:50,580 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-11-07 02:24:50,580 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547126670] [2019-11-07 02:24:50,581 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-07 02:24:50,581 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:24:50,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-07 02:24:50,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-11-07 02:24:50,582 INFO L87 Difference]: Start difference. First operand 1048 states and 1364 transitions. Second operand 10 states. [2019-11-07 02:24:50,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 02:24:50,708 INFO L93 Difference]: Finished difference Result 2172 states and 2850 transitions. [2019-11-07 02:24:50,709 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-07 02:24:50,709 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 246 [2019-11-07 02:24:50,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 02:24:50,716 INFO L225 Difference]: With dead ends: 2172 [2019-11-07 02:24:50,716 INFO L226 Difference]: Without dead ends: 1142 [2019-11-07 02:24:50,720 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2019-11-07 02:24:50,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1142 states. [2019-11-07 02:24:50,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1142 to 1044. [2019-11-07 02:24:50,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1044 states. [2019-11-07 02:24:50,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1044 states to 1044 states and 1356 transitions. [2019-11-07 02:24:50,781 INFO L78 Accepts]: Start accepts. Automaton has 1044 states and 1356 transitions. Word has length 246 [2019-11-07 02:24:50,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 02:24:50,782 INFO L462 AbstractCegarLoop]: Abstraction has 1044 states and 1356 transitions. [2019-11-07 02:24:50,782 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-07 02:24:50,783 INFO L276 IsEmpty]: Start isEmpty. Operand 1044 states and 1356 transitions. [2019-11-07 02:24:50,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2019-11-07 02:24:50,789 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:24:50,790 INFO L410 BasicCegarLoop]: trace histogram [8, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:24:50,790 INFO L410 AbstractCegarLoop]: === Iteration 20 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:24:50,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:24:50,791 INFO L82 PathProgramCache]: Analyzing trace with hash -1423067087, now seen corresponding path program 1 times [2019-11-07 02:24:50,791 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:24:50,791 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576519563] [2019-11-07 02:24:50,792 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:24:50,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:24:51,105 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2019-11-07 02:24:51,105 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576519563] [2019-11-07 02:24:51,106 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1929824334] [2019-11-07 02:24:51,106 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 02:24:51,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:24:51,906 INFO L256 TraceCheckSpWp]: Trace formula consists of 2905 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-07 02:24:51,926 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 02:24:52,037 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2019-11-07 02:24:52,037 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 02:24:52,834 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2019-11-07 02:24:52,834 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 02:24:52,835 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 10 [2019-11-07 02:24:52,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418230408] [2019-11-07 02:24:52,836 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 02:24:52,836 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:24:52,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 02:24:52,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-11-07 02:24:52,837 INFO L87 Difference]: Start difference. First operand 1044 states and 1356 transitions. Second operand 4 states. [2019-11-07 02:24:52,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 02:24:52,959 INFO L93 Difference]: Finished difference Result 2078 states and 2706 transitions. [2019-11-07 02:24:52,959 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 02:24:52,959 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 272 [2019-11-07 02:24:52,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 02:24:52,969 INFO L225 Difference]: With dead ends: 2078 [2019-11-07 02:24:52,969 INFO L226 Difference]: Without dead ends: 1052 [2019-11-07 02:24:52,974 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 552 GetRequests, 544 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-11-07 02:24:52,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2019-11-07 02:24:53,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 1052. [2019-11-07 02:24:53,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1052 states. [2019-11-07 02:24:53,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 1366 transitions. [2019-11-07 02:24:53,053 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 1366 transitions. Word has length 272 [2019-11-07 02:24:53,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 02:24:53,053 INFO L462 AbstractCegarLoop]: Abstraction has 1052 states and 1366 transitions. [2019-11-07 02:24:53,054 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 02:24:53,054 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 1366 transitions. [2019-11-07 02:24:53,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2019-11-07 02:24:53,060 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:24:53,060 INFO L410 BasicCegarLoop]: trace histogram [8, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 02:24:53,261 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 02:24:53,261 INFO L410 AbstractCegarLoop]: === Iteration 21 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:24:53,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:24:53,262 INFO L82 PathProgramCache]: Analyzing trace with hash 1818920145, now seen corresponding path program 1 times [2019-11-07 02:24:53,262 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:24:53,262 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865121144] [2019-11-07 02:24:53,263 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:24:53,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:24:53,754 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2019-11-07 02:24:53,755 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865121144] [2019-11-07 02:24:53,755 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178635953] [2019-11-07 02:24:53,755 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 02:24:54,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:24:54,869 INFO L256 TraceCheckSpWp]: Trace formula consists of 2927 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-07 02:24:54,888 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 02:24:54,975 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2019-11-07 02:24:54,975 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 02:24:55,913 WARN L191 SmtUtils]: Spent 508.00 ms on a formula simplification that was a NOOP. DAG size: 1 [2019-11-07 02:24:56,189 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2019-11-07 02:24:56,191 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1561354461] [2019-11-07 02:24:56,241 INFO L159 IcfgInterpreter]: Started Sifa with 206 locations of interest [2019-11-07 02:24:56,241 INFO L166 IcfgInterpreter]: Building call graph [2019-11-07 02:24:56,248 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-07 02:24:56,256 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-07 02:24:56,257 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs