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-validator-v0.8/linux-stable-42f9f8d-1-111_1a-sound--oss--opl3.ko-entry_point_ldv-val-v0.8.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 02:57:29,533 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 02:57:29,536 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 02:57:29,548 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 02:57:29,548 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 02:57:29,550 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 02:57:29,551 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 02:57:29,553 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 02:57:29,562 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 02:57:29,563 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 02:57:29,567 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 02:57:29,568 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 02:57:29,568 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 02:57:29,569 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 02:57:29,570 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 02:57:29,571 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 02:57:29,571 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 02:57:29,572 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 02:57:29,574 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 02:57:29,576 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 02:57:29,577 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 02:57:29,578 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 02:57:29,579 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 02:57:29,581 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 02:57:29,586 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 02:57:29,586 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 02:57:29,587 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 02:57:29,589 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 02:57:29,590 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 02:57:29,591 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 02:57:29,593 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 02:57:29,595 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 02:57:29,595 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 02:57:29,596 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 02:57:29,597 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 02:57:29,597 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 02:57:29,598 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 02:57:29,598 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 02:57:29,599 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 02:57:29,599 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 02:57:29,600 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 02:57:29,601 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 02:57:29,622 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 02:57:29,623 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 02:57:29,625 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 02:57:29,626 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 02:57:29,626 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 02:57:29,626 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 02:57:29,626 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 02:57:29,627 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 02:57:29,627 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 02:57:29,627 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 02:57:29,627 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 02:57:29,627 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 02:57:29,628 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 02:57:29,628 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 02:57:29,629 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 02:57:29,629 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 02:57:29,629 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 02:57:29,629 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 02:57:29,630 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 02:57:29,630 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 02:57:29,630 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 02:57:29,630 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 02:57:29,630 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 02:57:29,631 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 02:57:29,631 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 02:57:29,631 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 02:57:29,631 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 02:57:29,632 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 02:57:29,632 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 [2019-10-15 02:57:29,945 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 02:57:29,970 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 02:57:29,974 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 02:57:29,975 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 02:57:29,976 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 02:57:29,977 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-validator-v0.8/linux-stable-42f9f8d-1-111_1a-sound--oss--opl3.ko-entry_point_ldv-val-v0.8.cil.out.i [2019-10-15 02:57:30,054 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57564c13e/38cb4c825344411aa4e28fb8cb6a9f78/FLAG4dd4ef77a [2019-10-15 02:57:30,959 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 02:57:30,961 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-validator-v0.8/linux-stable-42f9f8d-1-111_1a-sound--oss--opl3.ko-entry_point_ldv-val-v0.8.cil.out.i [2019-10-15 02:57:31,009 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57564c13e/38cb4c825344411aa4e28fb8cb6a9f78/FLAG4dd4ef77a [2019-10-15 02:57:31,415 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57564c13e/38cb4c825344411aa4e28fb8cb6a9f78 [2019-10-15 02:57:31,425 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 02:57:31,426 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 02:57:31,427 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 02:57:31,428 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 02:57:31,431 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 02:57:31,432 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:57:31" (1/1) ... [2019-10-15 02:57:31,435 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56714b2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:57:31, skipping insertion in model container [2019-10-15 02:57:31,436 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:57:31" (1/1) ... [2019-10-15 02:57:31,444 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 02:57:31,583 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 02:57:32,890 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 02:57:32,983 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 02:57:33,259 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 02:57:33,636 INFO L192 MainTranslator]: Completed translation [2019-10-15 02:57:33,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:57:33 WrapperNode [2019-10-15 02:57:33,637 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 02:57:33,638 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 02:57:33,638 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 02:57:33,639 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 02:57:33,658 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:57:33" (1/1) ... [2019-10-15 02:57:33,659 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:57:33" (1/1) ... [2019-10-15 02:57:33,760 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:57:33" (1/1) ... [2019-10-15 02:57:33,761 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:57:33" (1/1) ... [2019-10-15 02:57:33,889 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:57:33" (1/1) ... [2019-10-15 02:57:33,914 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:57:33" (1/1) ... [2019-10-15 02:57:33,941 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:57:33" (1/1) ... [2019-10-15 02:57:33,967 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 02:57:33,968 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 02:57:33,968 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 02:57:33,968 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 02:57:33,972 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:57:33" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 02:57:34,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 02:57:34,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 02:57:34,073 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2019-10-15 02:57:34,074 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2019-10-15 02:57:34,074 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2019-10-15 02:57:34,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-10-15 02:57:34,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2019-10-15 02:57:34,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2019-10-15 02:57:34,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2019-10-15 02:57:34,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2019-10-15 02:57:34,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ptr [2019-10-15 02:57:34,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2019-10-15 02:57:34,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2019-10-15 02:57:34,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2019-10-15 02:57:34,077 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2019-10-15 02:57:34,077 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2019-10-15 02:57:34,077 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2019-10-15 02:57:34,077 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2019-10-15 02:57:34,077 INFO L138 BoogieDeclarations]: Found implementation of procedure enter_4op_mode [2019-10-15 02:57:34,078 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_ioctl [2019-10-15 02:57:34,078 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_detect [2019-10-15 02:57:34,078 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_kill_note [2019-10-15 02:57:34,078 INFO L138 BoogieDeclarations]: Found implementation of procedure store_instr [2019-10-15 02:57:34,079 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_set_instr [2019-10-15 02:57:34,079 INFO L138 BoogieDeclarations]: Found implementation of procedure calc_vol [2019-10-15 02:57:34,079 INFO L138 BoogieDeclarations]: Found implementation of procedure set_voice_volume [2019-10-15 02:57:34,079 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_start_note [2019-10-15 02:57:34,079 INFO L138 BoogieDeclarations]: Found implementation of procedure freq_to_fnum [2019-10-15 02:57:34,079 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_command [2019-10-15 02:57:34,080 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_reset [2019-10-15 02:57:34,080 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_open [2019-10-15 02:57:34,080 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_close [2019-10-15 02:57:34,080 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_hw_control [2019-10-15 02:57:34,081 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_load_patch [2019-10-15 02:57:34,081 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_panning [2019-10-15 02:57:34,081 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_volume_method [2019-10-15 02:57:34,081 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_aftertouch [2019-10-15 02:57:34,081 INFO L138 BoogieDeclarations]: Found implementation of procedure bend_pitch [2019-10-15 02:57:34,082 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_controller [2019-10-15 02:57:34,082 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_bender [2019-10-15 02:57:34,082 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_alloc_voice [2019-10-15 02:57:34,082 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_setup_voice [2019-10-15 02:57:34,083 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_init [2019-10-15 02:57:34,083 INFO L138 BoogieDeclarations]: Found implementation of procedure init_opl3 [2019-10-15 02:57:34,083 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup_opl3 [2019-10-15 02:57:34,083 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 02:57:34,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__copy_from_user_1 [2019-10-15 02:57:34,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__copy_to_user_2 [2019-10-15 02:57:34,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv___copy_user_nocache_3 [2019-10-15 02:57:34,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv___copy_user_nocache_4 [2019-10-15 02:57:34,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_copy_from_user_7 [2019-10-15 02:57:34,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2019-10-15 02:57:34,085 INFO L138 BoogieDeclarations]: Found implementation of procedure strlen [2019-10-15 02:57:34,085 INFO L138 BoogieDeclarations]: Found implementation of procedure strnlen [2019-10-15 02:57:34,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_len [2019-10-15 02:57:34,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_ret_val [2019-10-15 02:57:34,086 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2019-10-15 02:57:34,086 INFO L138 BoogieDeclarations]: Found implementation of procedure __copy_user_nocache [2019-10-15 02:57:34,087 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2019-10-15 02:57:34,087 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_region [2019-10-15 02:57:34,087 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2019-10-15 02:57:34,087 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2019-10-15 02:57:34,088 INFO L138 BoogieDeclarations]: Found implementation of procedure compute_finetune [2019-10-15 02:57:34,088 INFO L138 BoogieDeclarations]: Found implementation of procedure conf_printf2 [2019-10-15 02:57:34,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-10-15 02:57:34,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-10-15 02:57:34,088 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2019-10-15 02:57:34,089 INFO L138 BoogieDeclarations]: Found implementation of procedure note_to_freq [2019-10-15 02:57:34,089 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2019-10-15 02:57:34,089 INFO L138 BoogieDeclarations]: Found implementation of procedure sequencer_init [2019-10-15 02:57:34,089 INFO L138 BoogieDeclarations]: Found implementation of procedure sound_alloc_synthdev [2019-10-15 02:57:34,090 INFO L138 BoogieDeclarations]: Found implementation of procedure sound_unload_synthdev [2019-10-15 02:57:34,090 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_fmt [2019-10-15 02:57:34,090 INFO L138 BoogieDeclarations]: Found implementation of procedure external_alloc [2019-10-15 02:57:34,090 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2019-10-15 02:57:34,090 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2019-10-15 02:57:34,090 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2019-10-15 02:57:34,091 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2019-10-15 02:57:34,092 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2019-10-15 02:57:34,092 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 02:57:34,094 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2019-10-15 02:57:34,095 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2019-10-15 02:57:34,096 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_fmt [2019-10-15 02:57:34,096 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2019-10-15 02:57:34,097 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2019-10-15 02:57:34,098 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2019-10-15 02:57:34,098 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2019-10-15 02:57:34,100 INFO L130 BoogieDeclarations]: Found specification of procedure __request_region [2019-10-15 02:57:34,100 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2019-10-15 02:57:34,100 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2019-10-15 02:57:34,100 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_len [2019-10-15 02:57:34,101 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-10-15 02:57:34,101 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-10-15 02:57:34,101 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2019-10-15 02:57:34,101 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2019-10-15 02:57:34,102 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2019-10-15 02:57:34,102 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 02:57:34,102 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-15 02:57:34,102 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 02:57:34,103 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2019-10-15 02:57:34,103 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-10-15 02:57:34,103 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-15 02:57:34,103 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 02:57:34,103 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2019-10-15 02:57:34,104 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2019-10-15 02:57:34,104 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2019-10-15 02:57:34,104 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2019-10-15 02:57:34,105 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2019-10-15 02:57:34,105 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2019-10-15 02:57:34,105 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ptr [2019-10-15 02:57:34,105 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2019-10-15 02:57:34,105 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2019-10-15 02:57:34,106 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2019-10-15 02:57:34,106 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2019-10-15 02:57:34,106 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2019-10-15 02:57:34,107 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__copy_to_user_2 [2019-10-15 02:57:34,107 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2019-10-15 02:57:34,107 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__copy_from_user_1 [2019-10-15 02:57:34,107 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2019-10-15 02:57:34,108 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 02:57:34,109 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_copy_from_user_7 [2019-10-15 02:57:34,109 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2019-10-15 02:57:34,109 INFO L130 BoogieDeclarations]: Found specification of procedure __copy_user_nocache [2019-10-15 02:57:34,110 INFO L130 BoogieDeclarations]: Found specification of procedure ldv___copy_user_nocache_3 [2019-10-15 02:57:34,111 INFO L130 BoogieDeclarations]: Found specification of procedure ldv___copy_user_nocache_4 [2019-10-15 02:57:34,111 INFO L130 BoogieDeclarations]: Found specification of procedure sequencer_init [2019-10-15 02:57:34,111 INFO L130 BoogieDeclarations]: Found specification of procedure note_to_freq [2019-10-15 02:57:34,112 INFO L130 BoogieDeclarations]: Found specification of procedure compute_finetune [2019-10-15 02:57:34,112 INFO L130 BoogieDeclarations]: Found specification of procedure conf_printf2 [2019-10-15 02:57:34,112 INFO L130 BoogieDeclarations]: Found specification of procedure sound_unload_synthdev [2019-10-15 02:57:34,112 INFO L130 BoogieDeclarations]: Found specification of procedure sound_alloc_synthdev [2019-10-15 02:57:34,113 INFO L130 BoogieDeclarations]: Found specification of procedure store_instr [2019-10-15 02:57:34,113 INFO L130 BoogieDeclarations]: Found specification of procedure freq_to_fnum [2019-10-15 02:57:34,114 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_command [2019-10-15 02:57:34,118 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_kill_note [2019-10-15 02:57:34,118 INFO L130 BoogieDeclarations]: Found specification of procedure enter_4op_mode [2019-10-15 02:57:34,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 02:57:34,119 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 02:57:34,119 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 02:57:34,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 02:57:34,120 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_ioctl [2019-10-15 02:57:34,121 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_detect [2019-10-15 02:57:34,121 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2019-10-15 02:57:34,121 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2019-10-15 02:57:34,130 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_set_instr [2019-10-15 02:57:34,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 02:57:34,131 INFO L130 BoogieDeclarations]: Found specification of procedure calc_vol [2019-10-15 02:57:34,131 INFO L130 BoogieDeclarations]: Found specification of procedure set_voice_volume [2019-10-15 02:57:34,132 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_start_note [2019-10-15 02:57:34,133 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_reset [2019-10-15 02:57:34,133 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_open [2019-10-15 02:57:34,133 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_close [2019-10-15 02:57:34,133 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_hw_control [2019-10-15 02:57:34,133 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_load_patch [2019-10-15 02:57:34,134 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_panning [2019-10-15 02:57:34,134 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_volume_method [2019-10-15 02:57:34,134 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_aftertouch [2019-10-15 02:57:34,134 INFO L130 BoogieDeclarations]: Found specification of procedure bend_pitch [2019-10-15 02:57:34,135 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_controller [2019-10-15 02:57:34,135 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_bender [2019-10-15 02:57:34,135 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_alloc_voice [2019-10-15 02:57:34,135 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_setup_voice [2019-10-15 02:57:34,136 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_init [2019-10-15 02:57:34,136 INFO L130 BoogieDeclarations]: Found specification of procedure init_opl3 [2019-10-15 02:57:34,136 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup_opl3 [2019-10-15 02:57:34,136 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-10-15 02:57:34,136 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-10-15 02:57:34,137 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 02:57:34,137 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2019-10-15 02:57:34,137 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2019-10-15 02:57:34,137 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2019-10-15 02:57:34,138 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_ret_val [2019-10-15 02:57:34,138 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2019-10-15 02:57:34,138 INFO L130 BoogieDeclarations]: Found specification of procedure external_alloc [2019-10-15 02:57:34,138 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 02:57:34,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 02:57:34,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 02:57:34,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-15 02:57:34,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 02:57:34,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2019-10-15 02:57:34,140 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2019-10-15 02:57:34,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2019-10-15 02:57:34,140 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2019-10-15 02:57:35,479 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2019-10-15 02:57:51,594 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 02:57:51,594 INFO L284 CfgBuilder]: Removed 2 assume(true) statements. [2019-10-15 02:57:51,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:57:51 BoogieIcfgContainer [2019-10-15 02:57:51,596 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 02:57:51,598 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 02:57:51,598 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 02:57:51,601 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 02:57:51,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 02:57:31" (1/3) ... [2019-10-15 02:57:51,602 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38b1327d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:57:51, skipping insertion in model container [2019-10-15 02:57:51,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:57:33" (2/3) ... [2019-10-15 02:57:51,602 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38b1327d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:57:51, skipping insertion in model container [2019-10-15 02:57:51,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:57:51" (3/3) ... [2019-10-15 02:57:51,604 INFO L109 eAbstractionObserver]: Analyzing ICFG linux-stable-42f9f8d-1-111_1a-sound--oss--opl3.ko-entry_point_ldv-val-v0.8.cil.out.i [2019-10-15 02:57:51,615 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 02:57:51,624 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 02:57:51,636 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 02:57:51,668 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 02:57:51,668 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 02:57:51,668 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 02:57:51,668 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 02:57:51,668 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 02:57:51,668 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 02:57:51,669 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 02:57:51,669 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 02:57:51,708 INFO L276 IsEmpty]: Start isEmpty. Operand 761 states. [2019-10-15 02:57:51,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2019-10-15 02:57:51,747 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:57:51,749 INFO L380 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 39, 39, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 02:57:51,753 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:57:51,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:57:51,759 INFO L82 PathProgramCache]: Analyzing trace with hash -2019424661, now seen corresponding path program 1 times [2019-10-15 02:57:51,769 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:57:51,769 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626534309] [2019-10-15 02:57:51,770 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:57:51,770 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:57:51,770 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:57:52,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:57:53,273 INFO L134 CoverageAnalysis]: Checked inductivity of 5223 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5223 trivial. 0 not checked. [2019-10-15 02:57:53,274 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626534309] [2019-10-15 02:57:53,275 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 02:57:53,275 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 02:57:53,276 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287753294] [2019-10-15 02:57:53,281 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 02:57:53,282 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:57:53,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 02:57:53,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 02:57:53,298 INFO L87 Difference]: Start difference. First operand 761 states. Second operand 3 states. [2019-10-15 02:57:53,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:57:53,853 INFO L93 Difference]: Finished difference Result 1577 states and 2270 transitions. [2019-10-15 02:57:53,854 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 02:57:53,855 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 410 [2019-10-15 02:57:53,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:57:53,903 INFO L225 Difference]: With dead ends: 1577 [2019-10-15 02:57:53,903 INFO L226 Difference]: Without dead ends: 881 [2019-10-15 02:57:53,915 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 02:57:53,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2019-10-15 02:57:54,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 880. [2019-10-15 02:57:54,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 880 states. [2019-10-15 02:57:54,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 1243 transitions. [2019-10-15 02:57:54,136 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 1243 transitions. Word has length 410 [2019-10-15 02:57:54,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:57:54,138 INFO L462 AbstractCegarLoop]: Abstraction has 880 states and 1243 transitions. [2019-10-15 02:57:54,138 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 02:57:54,138 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 1243 transitions. [2019-10-15 02:57:54,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2019-10-15 02:57:54,151 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:57:54,152 INFO L380 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 39, 39, 4, 4, 4, 4, 4, 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] [2019-10-15 02:57:54,152 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:57:54,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:57:54,153 INFO L82 PathProgramCache]: Analyzing trace with hash -975273765, now seen corresponding path program 1 times [2019-10-15 02:57:54,153 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:57:54,153 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806899607] [2019-10-15 02:57:54,154 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:57:54,154 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:57:54,154 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:57:54,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:57:55,185 INFO L134 CoverageAnalysis]: Checked inductivity of 5225 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5223 trivial. 0 not checked. [2019-10-15 02:57:55,191 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806899607] [2019-10-15 02:57:55,191 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 02:57:55,192 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 02:57:55,192 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553079201] [2019-10-15 02:57:55,197 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 02:57:55,197 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:57:55,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 02:57:55,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 02:57:55,198 INFO L87 Difference]: Start difference. First operand 880 states and 1243 transitions. Second operand 4 states. [2019-10-15 02:57:56,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:57:56,790 INFO L93 Difference]: Finished difference Result 1653 states and 2339 transitions. [2019-10-15 02:57:56,794 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 02:57:56,794 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 425 [2019-10-15 02:57:56,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:57:56,803 INFO L225 Difference]: With dead ends: 1653 [2019-10-15 02:57:56,804 INFO L226 Difference]: Without dead ends: 880 [2019-10-15 02:57:56,809 INFO L600 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 [2019-10-15 02:57:56,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 880 states. [2019-10-15 02:57:56,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 880 to 880. [2019-10-15 02:57:56,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 880 states. [2019-10-15 02:57:56,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 1241 transitions. [2019-10-15 02:57:56,863 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 1241 transitions. Word has length 425 [2019-10-15 02:57:56,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:57:56,864 INFO L462 AbstractCegarLoop]: Abstraction has 880 states and 1241 transitions. [2019-10-15 02:57:56,864 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 02:57:56,865 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 1241 transitions. [2019-10-15 02:57:56,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2019-10-15 02:57:56,869 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:57:56,870 INFO L380 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 39, 39, 4, 4, 4, 4, 4, 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] [2019-10-15 02:57:56,870 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:57:56,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:57:56,870 INFO L82 PathProgramCache]: Analyzing trace with hash 799577847, now seen corresponding path program 1 times [2019-10-15 02:57:56,871 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:57:56,871 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529431497] [2019-10-15 02:57:56,871 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:57:56,871 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:57:56,871 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:57:57,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:57:57,630 INFO L134 CoverageAnalysis]: Checked inductivity of 5225 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5223 trivial. 0 not checked. [2019-10-15 02:57:57,631 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529431497] [2019-10-15 02:57:57,631 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 02:57:57,631 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 02:57:57,632 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568354304] [2019-10-15 02:57:57,633 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 02:57:57,633 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:57:57,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 02:57:57,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 02:57:57,634 INFO L87 Difference]: Start difference. First operand 880 states and 1241 transitions. Second operand 5 states. [2019-10-15 02:57:57,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:57:57,996 INFO L93 Difference]: Finished difference Result 1659 states and 2339 transitions. [2019-10-15 02:57:57,997 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 02:57:57,997 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 431 [2019-10-15 02:57:57,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:57:58,006 INFO L225 Difference]: With dead ends: 1659 [2019-10-15 02:57:58,006 INFO L226 Difference]: Without dead ends: 880 [2019-10-15 02:57:58,011 INFO L600 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 [2019-10-15 02:57:58,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 880 states. [2019-10-15 02:57:58,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 880 to 880. [2019-10-15 02:57:58,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 880 states. [2019-10-15 02:57:58,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 1239 transitions. [2019-10-15 02:57:58,068 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 1239 transitions. Word has length 431 [2019-10-15 02:57:58,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:57:58,069 INFO L462 AbstractCegarLoop]: Abstraction has 880 states and 1239 transitions. [2019-10-15 02:57:58,070 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 02:57:58,070 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 1239 transitions. [2019-10-15 02:57:58,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2019-10-15 02:57:58,074 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:57:58,075 INFO L380 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 39, 39, 4, 4, 4, 4, 4, 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] [2019-10-15 02:57:58,075 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:57:58,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:57:58,075 INFO L82 PathProgramCache]: Analyzing trace with hash 2125253951, now seen corresponding path program 1 times [2019-10-15 02:57:58,076 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:57:58,076 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132751866] [2019-10-15 02:57:58,076 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:57:58,076 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:57:58,076 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:57:58,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:57:58,668 INFO L134 CoverageAnalysis]: Checked inductivity of 5225 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5223 trivial. 0 not checked. [2019-10-15 02:57:58,670 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132751866] [2019-10-15 02:57:58,671 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 02:57:58,672 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 02:57:58,672 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267744306] [2019-10-15 02:57:58,673 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 02:57:58,676 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:57:58,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 02:57:58,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 02:57:58,677 INFO L87 Difference]: Start difference. First operand 880 states and 1239 transitions. Second operand 5 states. [2019-10-15 02:57:58,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:57:58,743 INFO L93 Difference]: Finished difference Result 1661 states and 2339 transitions. [2019-10-15 02:57:58,744 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 02:57:58,744 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 438 [2019-10-15 02:57:58,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:57:58,752 INFO L225 Difference]: With dead ends: 1661 [2019-10-15 02:57:58,752 INFO L226 Difference]: Without dead ends: 870 [2019-10-15 02:57:58,758 INFO L600 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 [2019-10-15 02:57:58,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2019-10-15 02:57:58,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 870. [2019-10-15 02:57:58,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 870 states. [2019-10-15 02:57:58,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 870 states to 870 states and 1219 transitions. [2019-10-15 02:57:58,875 INFO L78 Accepts]: Start accepts. Automaton has 870 states and 1219 transitions. Word has length 438 [2019-10-15 02:57:58,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:57:58,880 INFO L462 AbstractCegarLoop]: Abstraction has 870 states and 1219 transitions. [2019-10-15 02:57:58,880 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 02:57:58,880 INFO L276 IsEmpty]: Start isEmpty. Operand 870 states and 1219 transitions. [2019-10-15 02:57:58,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 557 [2019-10-15 02:57:58,888 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:57:58,890 INFO L380 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 39, 39, 8, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 02:57:58,891 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:57:58,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:57:58,891 INFO L82 PathProgramCache]: Analyzing trace with hash -520423280, now seen corresponding path program 1 times [2019-10-15 02:57:58,892 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:57:58,892 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949060360] [2019-10-15 02:57:58,892 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:57:58,892 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:57:58,892 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:57:59,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:57:59,776 INFO L134 CoverageAnalysis]: Checked inductivity of 5371 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 5354 trivial. 0 not checked. [2019-10-15 02:57:59,776 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949060360] [2019-10-15 02:57:59,777 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247551618] [2019-10-15 02:57:59,777 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 02:58:01,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:58:01,731 INFO L256 TraceCheckSpWp]: Trace formula consists of 9034 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-15 02:58:01,766 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 02:58:02,048 INFO L134 CoverageAnalysis]: Checked inductivity of 5371 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 5343 trivial. 0 not checked. [2019-10-15 02:58:02,049 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 02:58:02,895 INFO L134 CoverageAnalysis]: Checked inductivity of 5371 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 5354 trivial. 0 not checked. [2019-10-15 02:58:02,898 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 02:58:02,898 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2019-10-15 02:58:02,898 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100317079] [2019-10-15 02:58:02,900 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 02:58:02,900 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:58:02,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 02:58:02,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-10-15 02:58:02,901 INFO L87 Difference]: Start difference. First operand 870 states and 1219 transitions. Second operand 3 states. [2019-10-15 02:58:02,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:58:02,998 INFO L93 Difference]: Finished difference Result 1645 states and 2410 transitions. [2019-10-15 02:58:02,999 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 02:58:02,999 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 556 [2019-10-15 02:58:03,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:58:03,009 INFO L225 Difference]: With dead ends: 1645 [2019-10-15 02:58:03,010 INFO L226 Difference]: Without dead ends: 882 [2019-10-15 02:58:03,017 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 1114 GetRequests, 1111 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-10-15 02:58:03,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 882 states. [2019-10-15 02:58:03,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 882 to 874. [2019-10-15 02:58:03,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 874 states. [2019-10-15 02:58:03,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 874 states to 874 states and 1223 transitions. [2019-10-15 02:58:03,082 INFO L78 Accepts]: Start accepts. Automaton has 874 states and 1223 transitions. Word has length 556 [2019-10-15 02:58:03,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:58:03,083 INFO L462 AbstractCegarLoop]: Abstraction has 874 states and 1223 transitions. [2019-10-15 02:58:03,084 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 02:58:03,084 INFO L276 IsEmpty]: Start isEmpty. Operand 874 states and 1223 transitions. [2019-10-15 02:58:03,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 561 [2019-10-15 02:58:03,090 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:58:03,091 INFO L380 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 39, 39, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 02:58:03,292 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 02:58:03,292 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:58:03,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:58:03,292 INFO L82 PathProgramCache]: Analyzing trace with hash 817424114, now seen corresponding path program 1 times [2019-10-15 02:58:03,293 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:58:03,293 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186921025] [2019-10-15 02:58:03,294 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:58:03,294 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:58:03,294 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY