java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/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 21:03:39,347 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:03:39,351 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:03:39,371 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:03:39,372 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:03:39,374 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:03:39,376 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:03:39,386 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:03:39,390 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:03:39,394 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:03:39,396 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:03:39,398 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:03:39,398 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:03:39,401 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:03:39,404 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:03:39,405 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:03:39,407 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:03:39,408 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:03:39,409 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:03:39,414 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:03:39,419 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:03:39,422 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:03:39,425 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:03:39,426 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:03:39,428 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:03:39,428 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:03:39,429 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:03:39,431 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:03:39,432 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:03:39,433 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:03:39,434 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:03:39,435 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:03:39,436 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:03:39,437 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:03:39,438 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:03:39,439 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:03:39,440 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:03:39,440 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:03:39,440 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:03:39,441 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:03:39,442 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:03:39,443 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 21:03:39,479 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:03:39,480 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:03:39,481 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:03:39,481 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:03:39,481 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:03:39,482 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:03:39,482 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:03:39,486 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:03:39,486 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:03:39,487 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:03:39,487 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:03:39,487 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:03:39,487 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:03:39,487 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:03:39,488 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:03:39,488 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:03:39,488 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:03:39,488 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:03:39,488 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:03:39,489 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:03:39,489 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:03:39,489 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:03:39,490 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:03:39,491 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:03:39,491 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:03:39,491 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:03:39,491 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:03:39,491 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:03:39,492 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-13 21:03:39,826 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:03:39,846 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:03:39,851 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:03:39,853 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:03:39,854 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:03:39,855 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-validator-v0.8/linux-stable-42f9f8d-1-111_1a-sound--oss--opl3.ko-entry_point_ldv-val-v0.8.cil.out.i [2019-10-13 21:03:39,929 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e9ea0811/92b11667d16b46ebbf44d16d7c193917/FLAGf77d2569e [2019-10-13 21:03:40,765 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:03:40,766 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-validator-v0.8/linux-stable-42f9f8d-1-111_1a-sound--oss--opl3.ko-entry_point_ldv-val-v0.8.cil.out.i [2019-10-13 21:03:40,809 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e9ea0811/92b11667d16b46ebbf44d16d7c193917/FLAGf77d2569e [2019-10-13 21:03:41,250 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e9ea0811/92b11667d16b46ebbf44d16d7c193917 [2019-10-13 21:03:41,261 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:03:41,262 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:03:41,263 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:03:41,264 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:03:41,268 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:03:41,269 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:03:41" (1/1) ... [2019-10-13 21:03:41,272 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a089867 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:03:41, skipping insertion in model container [2019-10-13 21:03:41,273 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:03:41" (1/1) ... [2019-10-13 21:03:41,280 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:03:41,388 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:03:42,708 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:03:42,854 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:03:43,188 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:03:43,431 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:03:43,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:03:43 WrapperNode [2019-10-13 21:03:43,432 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:03:43,433 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:03:43,433 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:03:43,433 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:03:43,448 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:03:43" (1/1) ... [2019-10-13 21:03:43,448 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:03:43" (1/1) ... [2019-10-13 21:03:43,537 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:03:43" (1/1) ... [2019-10-13 21:03:43,543 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:03:43" (1/1) ... [2019-10-13 21:03:43,700 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:03:43" (1/1) ... [2019-10-13 21:03:43,731 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:03:43" (1/1) ... [2019-10-13 21:03:43,765 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:03:43" (1/1) ... [2019-10-13 21:03:43,809 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:03:43,810 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:03:43,810 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:03:43,810 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:03:43,811 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:03:43" (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 21:03:43,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:03:43,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:03:43,884 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2019-10-13 21:03:43,884 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2019-10-13 21:03:43,884 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2019-10-13 21:03:43,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-10-13 21:03:43,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2019-10-13 21:03:43,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2019-10-13 21:03:43,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2019-10-13 21:03:43,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2019-10-13 21:03:43,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ptr [2019-10-13 21:03:43,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2019-10-13 21:03:43,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2019-10-13 21:03:43,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2019-10-13 21:03:43,891 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2019-10-13 21:03:43,891 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2019-10-13 21:03:43,896 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2019-10-13 21:03:43,896 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2019-10-13 21:03:43,896 INFO L138 BoogieDeclarations]: Found implementation of procedure enter_4op_mode [2019-10-13 21:03:43,897 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_ioctl [2019-10-13 21:03:43,897 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_detect [2019-10-13 21:03:43,897 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_kill_note [2019-10-13 21:03:43,897 INFO L138 BoogieDeclarations]: Found implementation of procedure store_instr [2019-10-13 21:03:43,898 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_set_instr [2019-10-13 21:03:43,898 INFO L138 BoogieDeclarations]: Found implementation of procedure calc_vol [2019-10-13 21:03:43,899 INFO L138 BoogieDeclarations]: Found implementation of procedure set_voice_volume [2019-10-13 21:03:43,899 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_start_note [2019-10-13 21:03:43,899 INFO L138 BoogieDeclarations]: Found implementation of procedure freq_to_fnum [2019-10-13 21:03:43,899 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_command [2019-10-13 21:03:43,899 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_reset [2019-10-13 21:03:43,899 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_open [2019-10-13 21:03:43,899 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_close [2019-10-13 21:03:43,900 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_hw_control [2019-10-13 21:03:43,900 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_load_patch [2019-10-13 21:03:43,900 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_panning [2019-10-13 21:03:43,900 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_volume_method [2019-10-13 21:03:43,900 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_aftertouch [2019-10-13 21:03:43,900 INFO L138 BoogieDeclarations]: Found implementation of procedure bend_pitch [2019-10-13 21:03:43,900 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_controller [2019-10-13 21:03:43,900 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_bender [2019-10-13 21:03:43,901 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_alloc_voice [2019-10-13 21:03:43,901 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_setup_voice [2019-10-13 21:03:43,901 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_init [2019-10-13 21:03:43,901 INFO L138 BoogieDeclarations]: Found implementation of procedure init_opl3 [2019-10-13 21:03:43,901 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup_opl3 [2019-10-13 21:03:43,901 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:03:43,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__copy_from_user_1 [2019-10-13 21:03:43,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__copy_to_user_2 [2019-10-13 21:03:43,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv___copy_user_nocache_3 [2019-10-13 21:03:43,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv___copy_user_nocache_4 [2019-10-13 21:03:43,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_copy_from_user_7 [2019-10-13 21:03:43,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2019-10-13 21:03:43,902 INFO L138 BoogieDeclarations]: Found implementation of procedure strlen [2019-10-13 21:03:43,902 INFO L138 BoogieDeclarations]: Found implementation of procedure strnlen [2019-10-13 21:03:43,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_len [2019-10-13 21:03:43,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_ret_val [2019-10-13 21:03:43,903 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2019-10-13 21:03:43,903 INFO L138 BoogieDeclarations]: Found implementation of procedure __copy_user_nocache [2019-10-13 21:03:43,903 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2019-10-13 21:03:43,904 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_region [2019-10-13 21:03:43,904 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2019-10-13 21:03:43,904 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2019-10-13 21:03:43,904 INFO L138 BoogieDeclarations]: Found implementation of procedure compute_finetune [2019-10-13 21:03:43,905 INFO L138 BoogieDeclarations]: Found implementation of procedure conf_printf2 [2019-10-13 21:03:43,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-10-13 21:03:43,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-10-13 21:03:43,905 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2019-10-13 21:03:43,905 INFO L138 BoogieDeclarations]: Found implementation of procedure note_to_freq [2019-10-13 21:03:43,905 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2019-10-13 21:03:43,906 INFO L138 BoogieDeclarations]: Found implementation of procedure sequencer_init [2019-10-13 21:03:43,906 INFO L138 BoogieDeclarations]: Found implementation of procedure sound_alloc_synthdev [2019-10-13 21:03:43,906 INFO L138 BoogieDeclarations]: Found implementation of procedure sound_unload_synthdev [2019-10-13 21:03:43,906 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_fmt [2019-10-13 21:03:43,907 INFO L138 BoogieDeclarations]: Found implementation of procedure external_alloc [2019-10-13 21:03:43,907 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2019-10-13 21:03:43,907 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2019-10-13 21:03:43,907 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2019-10-13 21:03:43,908 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2019-10-13 21:03:43,908 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2019-10-13 21:03:43,908 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:03:43,909 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2019-10-13 21:03:43,909 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2019-10-13 21:03:43,909 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_fmt [2019-10-13 21:03:43,909 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2019-10-13 21:03:43,909 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2019-10-13 21:03:43,910 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2019-10-13 21:03:43,910 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2019-10-13 21:03:43,911 INFO L130 BoogieDeclarations]: Found specification of procedure __request_region [2019-10-13 21:03:43,911 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2019-10-13 21:03:43,912 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2019-10-13 21:03:43,912 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_len [2019-10-13 21:03:43,912 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-10-13 21:03:43,912 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-10-13 21:03:43,912 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2019-10-13 21:03:43,912 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2019-10-13 21:03:43,912 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2019-10-13 21:03:43,913 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:03:43,913 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-13 21:03:43,913 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:03:43,913 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2019-10-13 21:03:43,913 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-10-13 21:03:43,913 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-13 21:03:43,913 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:03:43,914 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2019-10-13 21:03:43,914 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2019-10-13 21:03:43,914 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2019-10-13 21:03:43,914 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2019-10-13 21:03:43,914 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2019-10-13 21:03:43,914 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2019-10-13 21:03:43,914 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ptr [2019-10-13 21:03:43,915 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2019-10-13 21:03:43,915 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2019-10-13 21:03:43,916 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2019-10-13 21:03:43,916 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2019-10-13 21:03:43,916 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2019-10-13 21:03:43,916 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__copy_to_user_2 [2019-10-13 21:03:43,917 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2019-10-13 21:03:43,917 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__copy_from_user_1 [2019-10-13 21:03:43,917 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2019-10-13 21:03:43,917 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:03:43,918 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_copy_from_user_7 [2019-10-13 21:03:43,918 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2019-10-13 21:03:43,918 INFO L130 BoogieDeclarations]: Found specification of procedure __copy_user_nocache [2019-10-13 21:03:43,918 INFO L130 BoogieDeclarations]: Found specification of procedure ldv___copy_user_nocache_3 [2019-10-13 21:03:43,919 INFO L130 BoogieDeclarations]: Found specification of procedure ldv___copy_user_nocache_4 [2019-10-13 21:03:43,919 INFO L130 BoogieDeclarations]: Found specification of procedure sequencer_init [2019-10-13 21:03:43,919 INFO L130 BoogieDeclarations]: Found specification of procedure note_to_freq [2019-10-13 21:03:43,920 INFO L130 BoogieDeclarations]: Found specification of procedure compute_finetune [2019-10-13 21:03:43,920 INFO L130 BoogieDeclarations]: Found specification of procedure conf_printf2 [2019-10-13 21:03:43,920 INFO L130 BoogieDeclarations]: Found specification of procedure sound_unload_synthdev [2019-10-13 21:03:43,920 INFO L130 BoogieDeclarations]: Found specification of procedure sound_alloc_synthdev [2019-10-13 21:03:43,920 INFO L130 BoogieDeclarations]: Found specification of procedure store_instr [2019-10-13 21:03:43,921 INFO L130 BoogieDeclarations]: Found specification of procedure freq_to_fnum [2019-10-13 21:03:43,921 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_command [2019-10-13 21:03:43,921 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_kill_note [2019-10-13 21:03:43,921 INFO L130 BoogieDeclarations]: Found specification of procedure enter_4op_mode [2019-10-13 21:03:43,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:03:43,925 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:03:43,925 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:03:43,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:03:43,926 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_ioctl [2019-10-13 21:03:43,926 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_detect [2019-10-13 21:03:43,926 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2019-10-13 21:03:43,927 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2019-10-13 21:03:43,933 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_set_instr [2019-10-13 21:03:43,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:03:43,933 INFO L130 BoogieDeclarations]: Found specification of procedure calc_vol [2019-10-13 21:03:43,933 INFO L130 BoogieDeclarations]: Found specification of procedure set_voice_volume [2019-10-13 21:03:43,934 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_start_note [2019-10-13 21:03:43,934 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_reset [2019-10-13 21:03:43,934 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_open [2019-10-13 21:03:43,934 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_close [2019-10-13 21:03:43,935 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_hw_control [2019-10-13 21:03:43,936 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_load_patch [2019-10-13 21:03:43,936 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_panning [2019-10-13 21:03:43,936 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_volume_method [2019-10-13 21:03:43,936 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_aftertouch [2019-10-13 21:03:43,936 INFO L130 BoogieDeclarations]: Found specification of procedure bend_pitch [2019-10-13 21:03:43,936 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_controller [2019-10-13 21:03:43,937 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_bender [2019-10-13 21:03:43,937 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_alloc_voice [2019-10-13 21:03:43,937 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_setup_voice [2019-10-13 21:03:43,937 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_init [2019-10-13 21:03:43,937 INFO L130 BoogieDeclarations]: Found specification of procedure init_opl3 [2019-10-13 21:03:43,937 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup_opl3 [2019-10-13 21:03:43,938 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-10-13 21:03:43,938 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-10-13 21:03:43,938 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:03:43,938 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2019-10-13 21:03:43,938 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2019-10-13 21:03:43,938 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2019-10-13 21:03:43,939 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_ret_val [2019-10-13 21:03:43,939 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2019-10-13 21:03:43,939 INFO L130 BoogieDeclarations]: Found specification of procedure external_alloc [2019-10-13 21:03:43,939 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:03:43,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:03:43,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:03:43,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-13 21:03:43,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:03:43,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2019-10-13 21:03:43,940 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2019-10-13 21:03:43,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2019-10-13 21:03:43,940 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2019-10-13 21:03:45,246 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2019-10-13 21:03:51,296 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:03:51,296 INFO L284 CfgBuilder]: Removed 2 assume(true) statements. [2019-10-13 21:03:51,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:03:51 BoogieIcfgContainer [2019-10-13 21:03:51,299 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:03:51,300 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:03:51,300 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:03:51,303 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:03:51,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:03:41" (1/3) ... [2019-10-13 21:03:51,304 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31a41ab4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:03:51, skipping insertion in model container [2019-10-13 21:03:51,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:03:43" (2/3) ... [2019-10-13 21:03:51,305 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31a41ab4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:03:51, skipping insertion in model container [2019-10-13 21:03:51,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:03:51" (3/3) ... [2019-10-13 21:03:51,308 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 21:03:51,318 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:03:51,331 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:03:51,343 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:03:51,380 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:03:51,380 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:03:51,381 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:03:51,381 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:03:51,381 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:03:51,381 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:03:51,381 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:03:51,381 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:03:51,428 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states. [2019-10-13 21:03:51,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 498 [2019-10-13 21:03:51,471 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:03:51,473 INFO L380 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 39, 39, 39, 39, 4, 4, 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, 1] [2019-10-13 21:03:51,476 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:03:51,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:03:51,483 INFO L82 PathProgramCache]: Analyzing trace with hash -1640497616, now seen corresponding path program 1 times [2019-10-13 21:03:51,492 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:03:51,493 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522249218] [2019-10-13 21:03:51,493 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:03:51,494 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:03:51,494 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:03:52,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:03:53,223 INFO L134 CoverageAnalysis]: Checked inductivity of 6717 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6717 trivial. 0 not checked. [2019-10-13 21:03:53,224 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522249218] [2019-10-13 21:03:53,225 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:03:53,225 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:03:53,225 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067673796] [2019-10-13 21:03:53,231 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:03:53,233 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:03:53,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:03:53,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:03:53,250 INFO L87 Difference]: Start difference. First operand 926 states. Second operand 3 states. [2019-10-13 21:03:53,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:03:53,743 INFO L93 Difference]: Finished difference Result 1923 states and 2766 transitions. [2019-10-13 21:03:53,743 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:03:53,745 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 497 [2019-10-13 21:03:53,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:03:53,802 INFO L225 Difference]: With dead ends: 1923 [2019-10-13 21:03:53,802 INFO L226 Difference]: Without dead ends: 1066 [2019-10-13 21:03:53,818 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 21:03:53,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2019-10-13 21:03:53,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2019-10-13 21:03:53,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1066 states. [2019-10-13 21:03:53,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1506 transitions. [2019-10-13 21:03:53,981 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1506 transitions. Word has length 497 [2019-10-13 21:03:53,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:03:53,984 INFO L462 AbstractCegarLoop]: Abstraction has 1066 states and 1506 transitions. [2019-10-13 21:03:53,984 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:03:53,985 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1506 transitions. [2019-10-13 21:03:54,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 514 [2019-10-13 21:03:54,001 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:03:54,001 INFO L380 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 39, 39, 39, 39, 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] [2019-10-13 21:03:54,002 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:03:54,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:03:54,002 INFO L82 PathProgramCache]: Analyzing trace with hash 1165895321, now seen corresponding path program 1 times [2019-10-13 21:03:54,002 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:03:54,003 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122190857] [2019-10-13 21:03:54,003 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:03:54,003 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:03:54,003 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:03:54,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:03:55,092 INFO L134 CoverageAnalysis]: Checked inductivity of 6719 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6717 trivial. 0 not checked. [2019-10-13 21:03:55,092 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122190857] [2019-10-13 21:03:55,092 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:03:55,093 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 21:03:55,093 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927347855] [2019-10-13 21:03:55,095 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:03:55,095 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:03:55,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:03:55,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:03:55,096 INFO L87 Difference]: Start difference. First operand 1066 states and 1506 transitions. Second operand 4 states. [2019-10-13 21:03:56,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:03:56,450 INFO L93 Difference]: Finished difference Result 2020 states and 2860 transitions. [2019-10-13 21:03:56,451 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:03:56,451 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 513 [2019-10-13 21:03:56,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:03:56,462 INFO L225 Difference]: With dead ends: 2020 [2019-10-13 21:03:56,462 INFO L226 Difference]: Without dead ends: 1066 [2019-10-13 21:03:56,468 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 21:03:56,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2019-10-13 21:03:56,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2019-10-13 21:03:56,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1066 states. [2019-10-13 21:03:56,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1504 transitions. [2019-10-13 21:03:56,527 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1504 transitions. Word has length 513 [2019-10-13 21:03:56,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:03:56,529 INFO L462 AbstractCegarLoop]: Abstraction has 1066 states and 1504 transitions. [2019-10-13 21:03:56,529 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:03:56,529 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1504 transitions. [2019-10-13 21:03:56,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 520 [2019-10-13 21:03:56,541 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:03:56,542 INFO L380 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 39, 39, 39, 39, 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] [2019-10-13 21:03:56,542 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:03:56,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:03:56,542 INFO L82 PathProgramCache]: Analyzing trace with hash -1940607939, now seen corresponding path program 1 times [2019-10-13 21:03:56,543 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:03:56,543 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200483785] [2019-10-13 21:03:56,543 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:03:56,543 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:03:56,543 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:03:56,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:03:57,329 INFO L134 CoverageAnalysis]: Checked inductivity of 6719 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6717 trivial. 0 not checked. [2019-10-13 21:03:57,330 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200483785] [2019-10-13 21:03:57,331 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:03:57,331 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 21:03:57,331 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614925237] [2019-10-13 21:03:57,334 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:03:57,335 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:03:57,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:03:57,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:03:57,336 INFO L87 Difference]: Start difference. First operand 1066 states and 1504 transitions. Second operand 5 states. [2019-10-13 21:03:57,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:03:57,623 INFO L93 Difference]: Finished difference Result 2030 states and 2866 transitions. [2019-10-13 21:03:57,623 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 21:03:57,624 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 519 [2019-10-13 21:03:57,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:03:57,634 INFO L225 Difference]: With dead ends: 2030 [2019-10-13 21:03:57,634 INFO L226 Difference]: Without dead ends: 1066 [2019-10-13 21:03:57,640 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 21:03:57,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2019-10-13 21:03:57,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2019-10-13 21:03:57,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1066 states. [2019-10-13 21:03:57,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1502 transitions. [2019-10-13 21:03:57,693 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1502 transitions. Word has length 519 [2019-10-13 21:03:57,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:03:57,694 INFO L462 AbstractCegarLoop]: Abstraction has 1066 states and 1502 transitions. [2019-10-13 21:03:57,694 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:03:57,695 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1502 transitions. [2019-10-13 21:03:57,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2019-10-13 21:03:57,700 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:03:57,700 INFO L380 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 39, 39, 39, 39, 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] [2019-10-13 21:03:57,701 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:03:57,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:03:57,701 INFO L82 PathProgramCache]: Analyzing trace with hash 234558283, now seen corresponding path program 1 times [2019-10-13 21:03:57,702 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:03:57,702 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367710159] [2019-10-13 21:03:57,702 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:03:57,702 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:03:57,702 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:03:57,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:03:59,143 INFO L134 CoverageAnalysis]: Checked inductivity of 6719 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6717 trivial. 0 not checked. [2019-10-13 21:03:59,144 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367710159] [2019-10-13 21:03:59,144 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:03:59,144 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 21:03:59,145 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626528358] [2019-10-13 21:03:59,145 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:03:59,146 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:03:59,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:03:59,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:03:59,146 INFO L87 Difference]: Start difference. First operand 1066 states and 1502 transitions. Second operand 5 states. [2019-10-13 21:03:59,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:03:59,217 INFO L93 Difference]: Finished difference Result 2028 states and 2860 transitions. [2019-10-13 21:03:59,217 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 21:03:59,218 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 526 [2019-10-13 21:03:59,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:03:59,227 INFO L225 Difference]: With dead ends: 2028 [2019-10-13 21:03:59,227 INFO L226 Difference]: Without dead ends: 1054 [2019-10-13 21:03:59,234 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 21:03:59,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1054 states. [2019-10-13 21:03:59,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1054 to 1054. [2019-10-13 21:03:59,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1054 states. [2019-10-13 21:03:59,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1054 states to 1054 states and 1480 transitions. [2019-10-13 21:03:59,288 INFO L78 Accepts]: Start accepts. Automaton has 1054 states and 1480 transitions. Word has length 526 [2019-10-13 21:03:59,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:03:59,289 INFO L462 AbstractCegarLoop]: Abstraction has 1054 states and 1480 transitions. [2019-10-13 21:03:59,289 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:03:59,290 INFO L276 IsEmpty]: Start isEmpty. Operand 1054 states and 1480 transitions. [2019-10-13 21:03:59,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 667 [2019-10-13 21:03:59,297 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:03:59,297 INFO L380 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 39, 39, 39, 39, 8, 8, 6, 6, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:03:59,298 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:03:59,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:03:59,298 INFO L82 PathProgramCache]: Analyzing trace with hash 2013024119, now seen corresponding path program 1 times [2019-10-13 21:03:59,298 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:03:59,299 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790495244] [2019-10-13 21:03:59,299 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:03:59,299 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:03:59,299 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:03:59,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:04:00,209 INFO L134 CoverageAnalysis]: Checked inductivity of 6908 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 6891 trivial. 0 not checked. [2019-10-13 21:04:00,209 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790495244] [2019-10-13 21:04:00,210 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1727268497] [2019-10-13 21:04:00,210 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 21:04:02,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:04:02,137 INFO L256 TraceCheckSpWp]: Trace formula consists of 9112 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-13 21:04:02,193 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:04:02,582 INFO L134 CoverageAnalysis]: Checked inductivity of 6908 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 6873 trivial. 0 not checked. [2019-10-13 21:04:02,582 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:04:03,512 INFO L134 CoverageAnalysis]: Checked inductivity of 6908 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 6891 trivial. 0 not checked. [2019-10-13 21:04:03,513 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:04:03,513 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2019-10-13 21:04:03,513 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446689577] [2019-10-13 21:04:03,514 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:04:03,515 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:04:03,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:04:03,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:04:03,515 INFO L87 Difference]: Start difference. First operand 1054 states and 1480 transitions. Second operand 3 states. [2019-10-13 21:04:03,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:04:03,598 INFO L93 Difference]: Finished difference Result 2008 states and 2927 transitions. [2019-10-13 21:04:03,599 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:04:03,599 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 666 [2019-10-13 21:04:03,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:04:03,610 INFO L225 Difference]: With dead ends: 2008 [2019-10-13 21:04:03,611 INFO L226 Difference]: Without dead ends: 1066 [2019-10-13 21:04:03,618 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 1334 GetRequests, 1331 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 21:04:03,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2019-10-13 21:04:03,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1058. [2019-10-13 21:04:03,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1058 states. [2019-10-13 21:04:03,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1058 states to 1058 states and 1484 transitions. [2019-10-13 21:04:03,677 INFO L78 Accepts]: Start accepts. Automaton has 1058 states and 1484 transitions. Word has length 666 [2019-10-13 21:04:03,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:04:03,678 INFO L462 AbstractCegarLoop]: Abstraction has 1058 states and 1484 transitions. [2019-10-13 21:04:03,678 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:04:03,679 INFO L276 IsEmpty]: Start isEmpty. Operand 1058 states and 1484 transitions. [2019-10-13 21:04:03,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 673 [2019-10-13 21:04:03,686 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:04:03,686 INFO L380 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 39, 39, 39, 39, 8, 8, 8, 8, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:04:03,888 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:04:03,888 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:04:03,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:04:03,889 INFO L82 PathProgramCache]: Analyzing trace with hash -392913981, now seen corresponding path program 1 times [2019-10-13 21:04:03,889 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:04:03,889 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690474263] [2019-10-13 21:04:03,890 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:04:03,890 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:04:03,890 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:04:04,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:04:04,816 INFO L134 CoverageAnalysis]: Checked inductivity of 6953 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6951 trivial. 0 not checked. [2019-10-13 21:04:04,816 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690474263] [2019-10-13 21:04:04,816 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:04:04,817 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:04:04,817 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451808824] [2019-10-13 21:04:04,818 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:04:04,819 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:04:04,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:04:04,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:04:04,819 INFO L87 Difference]: Start difference. First operand 1058 states and 1484 transitions. Second operand 3 states. [2019-10-13 21:04:04,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:04:04,875 INFO L93 Difference]: Finished difference Result 2010 states and 2828 transitions. [2019-10-13 21:04:04,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:04:04,876 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 672 [2019-10-13 21:04:04,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:04:04,889 INFO L225 Difference]: With dead ends: 2010 [2019-10-13 21:04:04,890 INFO L226 Difference]: Without dead ends: 1064 [2019-10-13 21:04:04,899 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 21:04:04,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1064 states. [2019-10-13 21:04:04,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1064 to 1060. [2019-10-13 21:04:04,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1060 states. [2019-10-13 21:04:04,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1060 states to 1060 states and 1486 transitions. [2019-10-13 21:04:04,963 INFO L78 Accepts]: Start accepts. Automaton has 1060 states and 1486 transitions. Word has length 672 [2019-10-13 21:04:04,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:04:04,964 INFO L462 AbstractCegarLoop]: Abstraction has 1060 states and 1486 transitions. [2019-10-13 21:04:04,964 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:04:04,964 INFO L276 IsEmpty]: Start isEmpty. Operand 1060 states and 1486 transitions. [2019-10-13 21:04:04,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 699 [2019-10-13 21:04:04,977 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:04:04,978 INFO L380 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 39, 39, 39, 39, 10, 10, 10, 10, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:04:04,978 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:04:04,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:04:04,979 INFO L82 PathProgramCache]: Analyzing trace with hash -1063783127, now seen corresponding path program 1 times [2019-10-13 21:04:04,979 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:04:04,980 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167368059] [2019-10-13 21:04:04,980 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:04:04,980 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:04:04,980 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:04:05,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:04:06,130 INFO L134 CoverageAnalysis]: Checked inductivity of 7100 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7098 trivial. 0 not checked. [2019-10-13 21:04:06,131 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167368059] [2019-10-13 21:04:06,131 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:04:06,132 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 21:04:06,132 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48693893] [2019-10-13 21:04:06,133 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:04:06,133 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:04:06,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:04:06,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:04:06,134 INFO L87 Difference]: Start difference. First operand 1060 states and 1486 transitions. Second operand 4 states. [2019-10-13 21:04:08,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:04:08,568 INFO L93 Difference]: Finished difference Result 1893 states and 2671 transitions. [2019-10-13 21:04:08,569 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:04:08,569 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 698 [2019-10-13 21:04:08,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:04:08,583 INFO L225 Difference]: With dead ends: 1893 [2019-10-13 21:04:08,583 INFO L226 Difference]: Without dead ends: 919 [2019-10-13 21:04:08,590 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 21:04:08,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 919 states. [2019-10-13 21:04:08,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 919 to 919. [2019-10-13 21:04:08,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 919 states. [2019-10-13 21:04:08,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 919 states to 919 states and 1297 transitions. [2019-10-13 21:04:08,640 INFO L78 Accepts]: Start accepts. Automaton has 919 states and 1297 transitions. Word has length 698 [2019-10-13 21:04:08,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:04:08,642 INFO L462 AbstractCegarLoop]: Abstraction has 919 states and 1297 transitions. [2019-10-13 21:04:08,642 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:04:08,642 INFO L276 IsEmpty]: Start isEmpty. Operand 919 states and 1297 transitions. [2019-10-13 21:04:08,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 705 [2019-10-13 21:04:08,649 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:04:08,649 INFO L380 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 39, 39, 39, 39, 10, 10, 10, 10, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:04:08,650 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:04:08,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:04:08,650 INFO L82 PathProgramCache]: Analyzing trace with hash 1959652205, now seen corresponding path program 1 times [2019-10-13 21:04:08,650 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:04:08,651 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305241653] [2019-10-13 21:04:08,651 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:04:08,651 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:04:08,651 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:04:09,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:04:09,966 INFO L134 CoverageAnalysis]: Checked inductivity of 7100 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7098 trivial. 0 not checked. [2019-10-13 21:04:09,967 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305241653] [2019-10-13 21:04:09,973 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:04:09,974 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-10-13 21:04:09,974 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168239411] [2019-10-13 21:04:09,975 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 21:04:09,975 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:04:09,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 21:04:09,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2019-10-13 21:04:09,978 INFO L87 Difference]: Start difference. First operand 919 states and 1297 transitions. Second operand 11 states.