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-f4eb214f-m [2019-10-13 22:54:44,171 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 22:54:44,174 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 22:54:44,192 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 22:54:44,193 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 22:54:44,195 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 22:54:44,197 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 22:54:44,209 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 22:54:44,211 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 22:54:44,212 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 22:54:44,215 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 22:54:44,216 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 22:54:44,216 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 22:54:44,220 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 22:54:44,223 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 22:54:44,225 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 22:54:44,227 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 22:54:44,229 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 22:54:44,232 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 22:54:44,236 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 22:54:44,240 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 22:54:44,241 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 22:54:44,242 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 22:54:44,244 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 22:54:44,247 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 22:54:44,247 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 22:54:44,247 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 22:54:44,249 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 22:54:44,250 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 22:54:44,251 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 22:54:44,251 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 22:54:44,252 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 22:54:44,253 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 22:54:44,254 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 22:54:44,258 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 22:54:44,258 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 22:54:44,259 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 22:54:44,259 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 22:54:44,259 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 22:54:44,261 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 22:54:44,264 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 22:54:44,265 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 [2019-10-13 22:54:44,283 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 22:54:44,283 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 22:54:44,284 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 22:54:44,285 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 22:54:44,285 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 22:54:44,285 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 22:54:44,285 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 22:54:44,286 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 22:54:44,286 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 22:54:44,286 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 22:54:44,286 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 22:54:44,286 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 22:54:44,287 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 22:54:44,287 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 22:54:44,287 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 22:54:44,287 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 22:54:44,287 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 22:54:44,288 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 22:54:44,288 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 22:54:44,288 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 22:54:44,288 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 22:54:44,288 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 22:54:44,289 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 22:54:44,289 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 22:54:44,289 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 22:54:44,289 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 22:54:44,289 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 22:54:44,290 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 22:54:44,290 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 [2019-10-13 22:54:44,577 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 22:54:44,596 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 22:54:44,600 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 22:54:44,602 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 22:54:44,603 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 22:54:44,604 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-validator-v0.8/linux-stable-42f9f8d-1-111_1a-sound--oss--opl3.ko-entry_point_ldv-val-v0.8.cil.out.i [2019-10-13 22:54:44,687 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ba0ba834/b0cee0c7f48e4c659540d7d1f4bbc545/FLAG4e5f7460b [2019-10-13 22:54:45,487 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 22:54:45,487 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-validator-v0.8/linux-stable-42f9f8d-1-111_1a-sound--oss--opl3.ko-entry_point_ldv-val-v0.8.cil.out.i [2019-10-13 22:54:45,542 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ba0ba834/b0cee0c7f48e4c659540d7d1f4bbc545/FLAG4e5f7460b [2019-10-13 22:54:45,609 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ba0ba834/b0cee0c7f48e4c659540d7d1f4bbc545 [2019-10-13 22:54:45,622 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 22:54:45,625 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 22:54:45,626 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 22:54:45,627 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 22:54:45,631 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 22:54:45,632 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:54:45" (1/1) ... [2019-10-13 22:54:45,635 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@734aed89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:54:45, skipping insertion in model container [2019-10-13 22:54:45,635 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:54:45" (1/1) ... [2019-10-13 22:54:45,643 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 22:54:45,762 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 22:54:47,164 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 22:54:47,361 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 22:54:47,670 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 22:54:47,910 INFO L192 MainTranslator]: Completed translation [2019-10-13 22:54:47,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:54:47 WrapperNode [2019-10-13 22:54:47,911 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 22:54:47,912 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 22:54:47,912 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 22:54:47,913 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 22:54:47,928 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:54:47" (1/1) ... [2019-10-13 22:54:47,928 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:54:47" (1/1) ... [2019-10-13 22:54:48,006 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:54:47" (1/1) ... [2019-10-13 22:54:48,007 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:54:47" (1/1) ... [2019-10-13 22:54:48,195 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:54:47" (1/1) ... [2019-10-13 22:54:48,216 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:54:47" (1/1) ... [2019-10-13 22:54:48,242 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:54:47" (1/1) ... [2019-10-13 22:54:48,288 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 22:54:48,289 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 22:54:48,289 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 22:54:48,294 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 22:54:48,297 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:54:47" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 22:54:48,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 22:54:48,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 22:54:48,378 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2019-10-13 22:54:48,378 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2019-10-13 22:54:48,378 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2019-10-13 22:54:48,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-10-13 22:54:48,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2019-10-13 22:54:48,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2019-10-13 22:54:48,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2019-10-13 22:54:48,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2019-10-13 22:54:48,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ptr [2019-10-13 22:54:48,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2019-10-13 22:54:48,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2019-10-13 22:54:48,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2019-10-13 22:54:48,382 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2019-10-13 22:54:48,382 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2019-10-13 22:54:48,383 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2019-10-13 22:54:48,383 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2019-10-13 22:54:48,384 INFO L138 BoogieDeclarations]: Found implementation of procedure enter_4op_mode [2019-10-13 22:54:48,387 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_ioctl [2019-10-13 22:54:48,387 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_detect [2019-10-13 22:54:48,387 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_kill_note [2019-10-13 22:54:48,387 INFO L138 BoogieDeclarations]: Found implementation of procedure store_instr [2019-10-13 22:54:48,387 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_set_instr [2019-10-13 22:54:48,387 INFO L138 BoogieDeclarations]: Found implementation of procedure calc_vol [2019-10-13 22:54:48,388 INFO L138 BoogieDeclarations]: Found implementation of procedure set_voice_volume [2019-10-13 22:54:48,388 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_start_note [2019-10-13 22:54:48,388 INFO L138 BoogieDeclarations]: Found implementation of procedure freq_to_fnum [2019-10-13 22:54:48,388 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_command [2019-10-13 22:54:48,388 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_reset [2019-10-13 22:54:48,388 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_open [2019-10-13 22:54:48,389 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_close [2019-10-13 22:54:48,389 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_hw_control [2019-10-13 22:54:48,389 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_load_patch [2019-10-13 22:54:48,389 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_panning [2019-10-13 22:54:48,389 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_volume_method [2019-10-13 22:54:48,389 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_aftertouch [2019-10-13 22:54:48,389 INFO L138 BoogieDeclarations]: Found implementation of procedure bend_pitch [2019-10-13 22:54:48,390 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_controller [2019-10-13 22:54:48,390 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_bender [2019-10-13 22:54:48,390 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_alloc_voice [2019-10-13 22:54:48,390 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_setup_voice [2019-10-13 22:54:48,390 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_init [2019-10-13 22:54:48,390 INFO L138 BoogieDeclarations]: Found implementation of procedure init_opl3 [2019-10-13 22:54:48,390 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup_opl3 [2019-10-13 22:54:48,391 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 22:54:48,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__copy_from_user_1 [2019-10-13 22:54:48,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__copy_to_user_2 [2019-10-13 22:54:48,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv___copy_user_nocache_3 [2019-10-13 22:54:48,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv___copy_user_nocache_4 [2019-10-13 22:54:48,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_copy_from_user_7 [2019-10-13 22:54:48,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2019-10-13 22:54:48,392 INFO L138 BoogieDeclarations]: Found implementation of procedure strlen [2019-10-13 22:54:48,392 INFO L138 BoogieDeclarations]: Found implementation of procedure strnlen [2019-10-13 22:54:48,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_len [2019-10-13 22:54:48,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_ret_val [2019-10-13 22:54:48,392 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2019-10-13 22:54:48,393 INFO L138 BoogieDeclarations]: Found implementation of procedure __copy_user_nocache [2019-10-13 22:54:48,393 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2019-10-13 22:54:48,393 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_region [2019-10-13 22:54:48,393 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2019-10-13 22:54:48,393 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2019-10-13 22:54:48,393 INFO L138 BoogieDeclarations]: Found implementation of procedure compute_finetune [2019-10-13 22:54:48,393 INFO L138 BoogieDeclarations]: Found implementation of procedure conf_printf2 [2019-10-13 22:54:48,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-10-13 22:54:48,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-10-13 22:54:48,394 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2019-10-13 22:54:48,394 INFO L138 BoogieDeclarations]: Found implementation of procedure note_to_freq [2019-10-13 22:54:48,394 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2019-10-13 22:54:48,394 INFO L138 BoogieDeclarations]: Found implementation of procedure sequencer_init [2019-10-13 22:54:48,395 INFO L138 BoogieDeclarations]: Found implementation of procedure sound_alloc_synthdev [2019-10-13 22:54:48,395 INFO L138 BoogieDeclarations]: Found implementation of procedure sound_unload_synthdev [2019-10-13 22:54:48,395 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_fmt [2019-10-13 22:54:48,395 INFO L138 BoogieDeclarations]: Found implementation of procedure external_alloc [2019-10-13 22:54:48,395 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2019-10-13 22:54:48,395 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2019-10-13 22:54:48,396 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2019-10-13 22:54:48,396 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2019-10-13 22:54:48,396 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2019-10-13 22:54:48,396 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 22:54:48,396 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2019-10-13 22:54:48,396 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2019-10-13 22:54:48,397 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_fmt [2019-10-13 22:54:48,397 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2019-10-13 22:54:48,397 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2019-10-13 22:54:48,397 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2019-10-13 22:54:48,397 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2019-10-13 22:54:48,397 INFO L130 BoogieDeclarations]: Found specification of procedure __request_region [2019-10-13 22:54:48,398 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2019-10-13 22:54:48,398 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2019-10-13 22:54:48,398 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_len [2019-10-13 22:54:48,398 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-10-13 22:54:48,398 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-10-13 22:54:48,398 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2019-10-13 22:54:48,398 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2019-10-13 22:54:48,399 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2019-10-13 22:54:48,399 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 22:54:48,399 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-13 22:54:48,399 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 22:54:48,399 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2019-10-13 22:54:48,399 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-10-13 22:54:48,400 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-13 22:54:48,400 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 22:54:48,400 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2019-10-13 22:54:48,400 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2019-10-13 22:54:48,400 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2019-10-13 22:54:48,400 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2019-10-13 22:54:48,401 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2019-10-13 22:54:48,401 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2019-10-13 22:54:48,401 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ptr [2019-10-13 22:54:48,401 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2019-10-13 22:54:48,401 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2019-10-13 22:54:48,401 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2019-10-13 22:54:48,401 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2019-10-13 22:54:48,402 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2019-10-13 22:54:48,402 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__copy_to_user_2 [2019-10-13 22:54:48,402 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2019-10-13 22:54:48,402 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__copy_from_user_1 [2019-10-13 22:54:48,402 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2019-10-13 22:54:48,402 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 22:54:48,402 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_copy_from_user_7 [2019-10-13 22:54:48,403 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2019-10-13 22:54:48,403 INFO L130 BoogieDeclarations]: Found specification of procedure __copy_user_nocache [2019-10-13 22:54:48,403 INFO L130 BoogieDeclarations]: Found specification of procedure ldv___copy_user_nocache_3 [2019-10-13 22:54:48,403 INFO L130 BoogieDeclarations]: Found specification of procedure ldv___copy_user_nocache_4 [2019-10-13 22:54:48,403 INFO L130 BoogieDeclarations]: Found specification of procedure sequencer_init [2019-10-13 22:54:48,403 INFO L130 BoogieDeclarations]: Found specification of procedure note_to_freq [2019-10-13 22:54:48,404 INFO L130 BoogieDeclarations]: Found specification of procedure compute_finetune [2019-10-13 22:54:48,404 INFO L130 BoogieDeclarations]: Found specification of procedure conf_printf2 [2019-10-13 22:54:48,404 INFO L130 BoogieDeclarations]: Found specification of procedure sound_unload_synthdev [2019-10-13 22:54:48,404 INFO L130 BoogieDeclarations]: Found specification of procedure sound_alloc_synthdev [2019-10-13 22:54:48,404 INFO L130 BoogieDeclarations]: Found specification of procedure store_instr [2019-10-13 22:54:48,404 INFO L130 BoogieDeclarations]: Found specification of procedure freq_to_fnum [2019-10-13 22:54:48,404 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_command [2019-10-13 22:54:48,405 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_kill_note [2019-10-13 22:54:48,405 INFO L130 BoogieDeclarations]: Found specification of procedure enter_4op_mode [2019-10-13 22:54:48,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 22:54:48,405 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 22:54:48,405 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 22:54:48,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 22:54:48,406 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_ioctl [2019-10-13 22:54:48,406 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_detect [2019-10-13 22:54:48,406 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2019-10-13 22:54:48,406 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2019-10-13 22:54:48,406 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_set_instr [2019-10-13 22:54:48,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 22:54:48,406 INFO L130 BoogieDeclarations]: Found specification of procedure calc_vol [2019-10-13 22:54:48,407 INFO L130 BoogieDeclarations]: Found specification of procedure set_voice_volume [2019-10-13 22:54:48,407 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_start_note [2019-10-13 22:54:48,407 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_reset [2019-10-13 22:54:48,407 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_open [2019-10-13 22:54:48,407 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_close [2019-10-13 22:54:48,407 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_hw_control [2019-10-13 22:54:48,408 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_load_patch [2019-10-13 22:54:48,408 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_panning [2019-10-13 22:54:48,408 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_volume_method [2019-10-13 22:54:48,408 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_aftertouch [2019-10-13 22:54:48,408 INFO L130 BoogieDeclarations]: Found specification of procedure bend_pitch [2019-10-13 22:54:48,408 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_controller [2019-10-13 22:54:48,408 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_bender [2019-10-13 22:54:48,409 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_alloc_voice [2019-10-13 22:54:48,409 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_setup_voice [2019-10-13 22:54:48,409 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_init [2019-10-13 22:54:48,409 INFO L130 BoogieDeclarations]: Found specification of procedure init_opl3 [2019-10-13 22:54:48,409 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup_opl3 [2019-10-13 22:54:48,409 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-10-13 22:54:48,409 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-10-13 22:54:48,410 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 22:54:48,410 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2019-10-13 22:54:48,410 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2019-10-13 22:54:48,410 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2019-10-13 22:54:48,410 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_ret_val [2019-10-13 22:54:48,410 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2019-10-13 22:54:48,410 INFO L130 BoogieDeclarations]: Found specification of procedure external_alloc [2019-10-13 22:54:48,411 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 22:54:48,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 22:54:48,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 22:54:48,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-13 22:54:48,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 22:54:48,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2019-10-13 22:54:48,411 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2019-10-13 22:54:48,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2019-10-13 22:54:48,412 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2019-10-13 22:54:49,513 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2019-10-13 22:55:04,309 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 22:55:04,310 INFO L284 CfgBuilder]: Removed 2 assume(true) statements. [2019-10-13 22:55:04,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:55:04 BoogieIcfgContainer [2019-10-13 22:55:04,312 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 22:55:04,313 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 22:55:04,313 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 22:55:04,316 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 22:55:04,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:54:45" (1/3) ... [2019-10-13 22:55:04,317 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f4a572a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:55:04, skipping insertion in model container [2019-10-13 22:55:04,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:54:47" (2/3) ... [2019-10-13 22:55:04,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f4a572a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:55:04, skipping insertion in model container [2019-10-13 22:55:04,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:55:04" (3/3) ... [2019-10-13 22:55:04,320 INFO L109 eAbstractionObserver]: Analyzing ICFG linux-stable-42f9f8d-1-111_1a-sound--oss--opl3.ko-entry_point_ldv-val-v0.8.cil.out.i [2019-10-13 22:55:04,330 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 22:55:04,343 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 22:55:04,355 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 22:55:04,394 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 22:55:04,395 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 22:55:04,395 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 22:55:04,395 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 22:55:04,395 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 22:55:04,395 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 22:55:04,395 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 22:55:04,395 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 22:55:04,441 INFO L276 IsEmpty]: Start isEmpty. Operand 761 states. [2019-10-13 22:55:04,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2019-10-13 22:55:04,469 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:55:04,470 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] [2019-10-13 22:55:04,473 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:55:04,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:55:04,479 INFO L82 PathProgramCache]: Analyzing trace with hash -2019424661, now seen corresponding path program 1 times [2019-10-13 22:55:04,489 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:55:04,489 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905556924] [2019-10-13 22:55:04,490 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:55:04,490 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:55:04,490 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:55:05,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:55:05,834 INFO L134 CoverageAnalysis]: Checked inductivity of 5223 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5223 trivial. 0 not checked. [2019-10-13 22:55:05,835 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905556924] [2019-10-13 22:55:05,836 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:55:05,836 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 22:55:05,836 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351130369] [2019-10-13 22:55:05,841 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 22:55:05,842 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:55:05,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 22:55:05,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:55:05,856 INFO L87 Difference]: Start difference. First operand 761 states. Second operand 3 states. [2019-10-13 22:55:06,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:55:06,374 INFO L93 Difference]: Finished difference Result 1577 states and 2270 transitions. [2019-10-13 22:55:06,374 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 22:55:06,376 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 410 [2019-10-13 22:55:06,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:55:06,416 INFO L225 Difference]: With dead ends: 1577 [2019-10-13 22:55:06,416 INFO L226 Difference]: Without dead ends: 881 [2019-10-13 22:55:06,431 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 [2019-10-13 22:55:06,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2019-10-13 22:55:06,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 880. [2019-10-13 22:55:06,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 880 states. [2019-10-13 22:55:06,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 1243 transitions. [2019-10-13 22:55:06,608 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 1243 transitions. Word has length 410 [2019-10-13 22:55:06,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:55:06,610 INFO L462 AbstractCegarLoop]: Abstraction has 880 states and 1243 transitions. [2019-10-13 22:55:06,610 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 22:55:06,610 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 1243 transitions. [2019-10-13 22:55:06,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2019-10-13 22:55:06,623 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:55:06,623 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] [2019-10-13 22:55:06,624 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:55:06,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:55:06,624 INFO L82 PathProgramCache]: Analyzing trace with hash -975273765, now seen corresponding path program 1 times [2019-10-13 22:55:06,625 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:55:06,625 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491970338] [2019-10-13 22:55:06,625 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:55:06,625 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:55:06,625 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:55:06,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:55:07,503 INFO L134 CoverageAnalysis]: Checked inductivity of 5225 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5223 trivial. 0 not checked. [2019-10-13 22:55:07,504 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491970338] [2019-10-13 22:55:07,504 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:55:07,504 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 22:55:07,504 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195101110] [2019-10-13 22:55:07,507 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 22:55:07,507 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:55:07,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 22:55:07,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 22:55:07,508 INFO L87 Difference]: Start difference. First operand 880 states and 1243 transitions. Second operand 4 states. [2019-10-13 22:55:08,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:55:08,924 INFO L93 Difference]: Finished difference Result 1653 states and 2339 transitions. [2019-10-13 22:55:08,931 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 22:55:08,932 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 425 [2019-10-13 22:55:08,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:55:08,948 INFO L225 Difference]: With dead ends: 1653 [2019-10-13 22:55:08,949 INFO L226 Difference]: Without dead ends: 880 [2019-10-13 22:55:08,955 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 [2019-10-13 22:55:08,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 880 states. [2019-10-13 22:55:09,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 880 to 880. [2019-10-13 22:55:09,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 880 states. [2019-10-13 22:55:09,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 1241 transitions. [2019-10-13 22:55:09,057 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 1241 transitions. Word has length 425 [2019-10-13 22:55:09,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:55:09,064 INFO L462 AbstractCegarLoop]: Abstraction has 880 states and 1241 transitions. [2019-10-13 22:55:09,064 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 22:55:09,064 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 1241 transitions. [2019-10-13 22:55:09,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2019-10-13 22:55:09,071 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:55:09,072 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] [2019-10-13 22:55:09,072 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:55:09,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:55:09,073 INFO L82 PathProgramCache]: Analyzing trace with hash 799577847, now seen corresponding path program 1 times [2019-10-13 22:55:09,073 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:55:09,074 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668920105] [2019-10-13 22:55:09,074 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:55:09,074 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:55:09,075 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:55:09,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:55:10,391 INFO L134 CoverageAnalysis]: Checked inductivity of 5225 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5223 trivial. 0 not checked. [2019-10-13 22:55:10,393 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668920105] [2019-10-13 22:55:10,393 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:55:10,394 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 22:55:10,394 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938879846] [2019-10-13 22:55:10,398 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 22:55:10,398 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:55:10,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 22:55:10,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 22:55:10,400 INFO L87 Difference]: Start difference. First operand 880 states and 1241 transitions. Second operand 5 states. [2019-10-13 22:55:10,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:55:10,893 INFO L93 Difference]: Finished difference Result 1659 states and 2339 transitions. [2019-10-13 22:55:10,893 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 22:55:10,893 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 431 [2019-10-13 22:55:10,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:55:10,904 INFO L225 Difference]: With dead ends: 1659 [2019-10-13 22:55:10,904 INFO L226 Difference]: Without dead ends: 880 [2019-10-13 22:55:10,909 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 [2019-10-13 22:55:10,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 880 states. [2019-10-13 22:55:10,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 880 to 880. [2019-10-13 22:55:10,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 880 states. [2019-10-13 22:55:10,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 1239 transitions. [2019-10-13 22:55:10,969 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 1239 transitions. Word has length 431 [2019-10-13 22:55:10,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:55:10,972 INFO L462 AbstractCegarLoop]: Abstraction has 880 states and 1239 transitions. [2019-10-13 22:55:10,972 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 22:55:10,973 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 1239 transitions. [2019-10-13 22:55:10,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2019-10-13 22:55:10,977 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:55:10,977 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] [2019-10-13 22:55:10,977 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:55:10,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:55:10,978 INFO L82 PathProgramCache]: Analyzing trace with hash 2125253951, now seen corresponding path program 1 times [2019-10-13 22:55:10,978 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:55:10,978 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190966880] [2019-10-13 22:55:10,979 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:55:10,979 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:55:10,979 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:55:11,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:55:11,760 INFO L134 CoverageAnalysis]: Checked inductivity of 5225 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5223 trivial. 0 not checked. [2019-10-13 22:55:11,761 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190966880] [2019-10-13 22:55:11,761 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:55:11,761 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 22:55:11,761 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230060700] [2019-10-13 22:55:11,762 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 22:55:11,763 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:55:11,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 22:55:11,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 22:55:11,763 INFO L87 Difference]: Start difference. First operand 880 states and 1239 transitions. Second operand 5 states. [2019-10-13 22:55:11,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:55:11,836 INFO L93 Difference]: Finished difference Result 1661 states and 2339 transitions. [2019-10-13 22:55:11,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 22:55:11,837 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 438 [2019-10-13 22:55:11,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:55:11,847 INFO L225 Difference]: With dead ends: 1661 [2019-10-13 22:55:11,847 INFO L226 Difference]: Without dead ends: 870 [2019-10-13 22:55:11,854 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 [2019-10-13 22:55:11,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2019-10-13 22:55:11,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 870. [2019-10-13 22:55:11,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 870 states. [2019-10-13 22:55:11,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 870 states to 870 states and 1219 transitions. [2019-10-13 22:55:11,912 INFO L78 Accepts]: Start accepts. Automaton has 870 states and 1219 transitions. Word has length 438 [2019-10-13 22:55:11,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:55:11,913 INFO L462 AbstractCegarLoop]: Abstraction has 870 states and 1219 transitions. [2019-10-13 22:55:11,913 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 22:55:11,914 INFO L276 IsEmpty]: Start isEmpty. Operand 870 states and 1219 transitions. [2019-10-13 22:55:11,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 557 [2019-10-13 22:55:11,922 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:55:11,923 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] [2019-10-13 22:55:11,923 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:55:11,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:55:11,924 INFO L82 PathProgramCache]: Analyzing trace with hash -520423280, now seen corresponding path program 1 times [2019-10-13 22:55:11,924 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:55:11,924 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219925979] [2019-10-13 22:55:11,925 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:55:11,925 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:55:11,925 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:55:12,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:55:12,681 INFO L134 CoverageAnalysis]: Checked inductivity of 5371 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 5354 trivial. 0 not checked. [2019-10-13 22:55:12,681 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219925979] [2019-10-13 22:55:12,681 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1648978157] [2019-10-13 22:55:12,682 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 [2019-10-13 22:55:14,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:55:14,237 INFO L256 TraceCheckSpWp]: Trace formula consists of 9034 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-13 22:55:14,273 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 22:55:14,635 INFO L134 CoverageAnalysis]: Checked inductivity of 5371 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 5343 trivial. 0 not checked. [2019-10-13 22:55:14,636 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 22:55:15,526 INFO L134 CoverageAnalysis]: Checked inductivity of 5371 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 5354 trivial. 0 not checked. [2019-10-13 22:55:15,527 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 22:55:15,527 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2019-10-13 22:55:15,527 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265096522] [2019-10-13 22:55:15,528 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 22:55:15,529 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:55:15,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 22:55:15,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-10-13 22:55:15,529 INFO L87 Difference]: Start difference. First operand 870 states and 1219 transitions. Second operand 3 states. [2019-10-13 22:55:15,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:55:15,599 INFO L93 Difference]: Finished difference Result 1645 states and 2410 transitions. [2019-10-13 22:55:15,599 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 22:55:15,599 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 556 [2019-10-13 22:55:15,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:55:15,609 INFO L225 Difference]: With dead ends: 1645 [2019-10-13 22:55:15,609 INFO L226 Difference]: Without dead ends: 882 [2019-10-13 22:55:15,616 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 [2019-10-13 22:55:15,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 882 states. [2019-10-13 22:55:15,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 882 to 874. [2019-10-13 22:55:15,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 874 states. [2019-10-13 22:55:15,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 874 states to 874 states and 1223 transitions. [2019-10-13 22:55:15,666 INFO L78 Accepts]: Start accepts. Automaton has 874 states and 1223 transitions. Word has length 556 [2019-10-13 22:55:15,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:55:15,667 INFO L462 AbstractCegarLoop]: Abstraction has 874 states and 1223 transitions. [2019-10-13 22:55:15,667 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 22:55:15,667 INFO L276 IsEmpty]: Start isEmpty. Operand 874 states and 1223 transitions. [2019-10-13 22:55:15,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 561 [2019-10-13 22:55:15,673 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:55:15,674 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] [2019-10-13 22:55:15,888 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 22:55:15,889 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:55:15,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:55:15,890 INFO L82 PathProgramCache]: Analyzing trace with hash 817424114, now seen corresponding path program 1 times [2019-10-13 22:55:15,891 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:55:15,891 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533147570] [2019-10-13 22:55:15,891 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:55:15,891 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:55:15,891 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:55:16,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:55:16,916 INFO L134 CoverageAnalysis]: Checked inductivity of 5403 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5401 trivial. 0 not checked. [2019-10-13 22:55:16,917 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533147570] [2019-10-13 22:55:16,917 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:55:16,917 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 22:55:16,917 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319664432] [2019-10-13 22:55:16,918 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 22:55:16,919 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:55:16,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 22:55:16,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:55:16,919 INFO L87 Difference]: Start difference. First operand 874 states and 1223 transitions. Second operand 3 states. [2019-10-13 22:55:16,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:55:16,990 INFO L93 Difference]: Finished difference Result 1647 states and 2311 transitions. [2019-10-13 22:55:16,990 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 22:55:16,990 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 560 [2019-10-13 22:55:16,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:55:16,999 INFO L225 Difference]: With dead ends: 1647 [2019-10-13 22:55:16,999 INFO L226 Difference]: Without dead ends: 880 [2019-10-13 22:55:17,005 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 [2019-10-13 22:55:17,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 880 states. [2019-10-13 22:55:17,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 880 to 876. [2019-10-13 22:55:17,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 876 states. [2019-10-13 22:55:17,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 1225 transitions. [2019-10-13 22:55:17,067 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 1225 transitions. Word has length 560 [2019-10-13 22:55:17,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:55:17,068 INFO L462 AbstractCegarLoop]: Abstraction has 876 states and 1225 transitions. [2019-10-13 22:55:17,069 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 22:55:17,069 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 1225 transitions. [2019-10-13 22:55:17,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 583 [2019-10-13 22:55:17,075 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:55:17,076 INFO L380 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 39, 39, 10, 10, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1] [2019-10-13 22:55:17,076 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:55:17,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:55:17,077 INFO L82 PathProgramCache]: Analyzing trace with hash -908406076, now seen corresponding path program 1 times [2019-10-13 22:55:17,077 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:55:17,077 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123716416] [2019-10-13 22:55:17,077 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:55:17,078 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:55:17,078 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:55:17,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat