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 -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 0.1.24-673a906-m [2019-10-02 10:29:10,321 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-02 10:29:10,324 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-02 10:29:10,336 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-02 10:29:10,336 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-02 10:29:10,337 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-02 10:29:10,339 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-02 10:29:10,341 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-02 10:29:10,342 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-02 10:29:10,343 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-02 10:29:10,344 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-02 10:29:10,345 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-02 10:29:10,346 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-02 10:29:10,347 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-02 10:29:10,348 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-02 10:29:10,349 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-02 10:29:10,350 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-02 10:29:10,350 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-02 10:29:10,352 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-02 10:29:10,354 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-02 10:29:10,355 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-02 10:29:10,356 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-02 10:29:10,357 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-02 10:29:10,358 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-02 10:29:10,360 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-02 10:29:10,361 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-02 10:29:10,361 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-02 10:29:10,362 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-02 10:29:10,362 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-02 10:29:10,363 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-02 10:29:10,363 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-02 10:29:10,364 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-02 10:29:10,365 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-02 10:29:10,366 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-02 10:29:10,367 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-02 10:29:10,367 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-02 10:29:10,368 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-02 10:29:10,368 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-02 10:29:10,368 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-02 10:29:10,369 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-02 10:29:10,369 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-02 10:29:10,370 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 [2019-10-02 10:29:10,385 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-02 10:29:10,385 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-02 10:29:10,386 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-02 10:29:10,387 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-02 10:29:10,387 INFO L138 SettingsManager]: * Use SBE=true [2019-10-02 10:29:10,387 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-02 10:29:10,387 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-02 10:29:10,387 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-02 10:29:10,388 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-02 10:29:10,388 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-02 10:29:10,388 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-02 10:29:10,388 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-02 10:29:10,388 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-02 10:29:10,389 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-02 10:29:10,389 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-02 10:29:10,389 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-02 10:29:10,389 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-02 10:29:10,389 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-02 10:29:10,390 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-02 10:29:10,390 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-02 10:29:10,390 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-02 10:29:10,390 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 10:29:10,390 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-02 10:29:10,391 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-02 10:29:10,391 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-02 10:29:10,391 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-02 10:29:10,391 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-02 10:29:10,392 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-02 10:29:10,392 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-02 10:29:10,423 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-02 10:29:10,440 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-02 10:29:10,443 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-02 10:29:10,445 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-02 10:29:10,445 INFO L275 PluginConnector]: CDTParser initialized [2019-10-02 10:29:10,446 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-validator-v0.8/linux-stable-42f9f8d-1-111_1a-sound--oss--opl3.ko-entry_point_ldv-val-v0.8.cil.out.i [2019-10-02 10:29:10,512 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d2c3d98d/b2aaa0cc10794dfca4a4e4f003a17324/FLAG3a112089f [2019-10-02 10:29:11,265 INFO L306 CDTParser]: Found 1 translation units. [2019-10-02 10:29:11,266 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-validator-v0.8/linux-stable-42f9f8d-1-111_1a-sound--oss--opl3.ko-entry_point_ldv-val-v0.8.cil.out.i [2019-10-02 10:29:11,296 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d2c3d98d/b2aaa0cc10794dfca4a4e4f003a17324/FLAG3a112089f [2019-10-02 10:29:11,481 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d2c3d98d/b2aaa0cc10794dfca4a4e4f003a17324 [2019-10-02 10:29:11,492 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-02 10:29:11,493 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-02 10:29:11,495 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-02 10:29:11,495 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-02 10:29:11,498 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-02 10:29:11,499 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 10:29:11" (1/1) ... [2019-10-02 10:29:11,502 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@322d5911 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:29:11, skipping insertion in model container [2019-10-02 10:29:11,502 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 10:29:11" (1/1) ... [2019-10-02 10:29:11,511 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-02 10:29:11,627 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-02 10:29:13,048 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 10:29:13,177 INFO L188 MainTranslator]: Completed pre-run [2019-10-02 10:29:13,492 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 10:29:13,779 INFO L192 MainTranslator]: Completed translation [2019-10-02 10:29:13,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:29:13 WrapperNode [2019-10-02 10:29:13,781 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-02 10:29:13,782 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-02 10:29:13,783 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-02 10:29:13,783 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-02 10:29:13,807 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:29:13" (1/1) ... [2019-10-02 10:29:13,807 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:29:13" (1/1) ... [2019-10-02 10:29:14,007 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:29:13" (1/1) ... [2019-10-02 10:29:14,007 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:29:13" (1/1) ... [2019-10-02 10:29:14,219 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:29:13" (1/1) ... [2019-10-02 10:29:14,256 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:29:13" (1/1) ... [2019-10-02 10:29:14,280 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:29:13" (1/1) ... [2019-10-02 10:29:14,305 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-02 10:29:14,306 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-02 10:29:14,306 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-02 10:29:14,306 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-02 10:29:14,308 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:29:13" (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 [2019-10-02 10:29:14,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-02 10:29:14,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-02 10:29:14,399 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2019-10-02 10:29:14,400 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2019-10-02 10:29:14,400 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2019-10-02 10:29:14,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-10-02 10:29:14,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2019-10-02 10:29:14,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2019-10-02 10:29:14,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2019-10-02 10:29:14,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2019-10-02 10:29:14,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ptr [2019-10-02 10:29:14,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2019-10-02 10:29:14,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2019-10-02 10:29:14,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2019-10-02 10:29:14,402 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2019-10-02 10:29:14,402 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2019-10-02 10:29:14,402 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2019-10-02 10:29:14,402 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2019-10-02 10:29:14,402 INFO L138 BoogieDeclarations]: Found implementation of procedure enter_4op_mode [2019-10-02 10:29:14,404 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_ioctl [2019-10-02 10:29:14,404 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_detect [2019-10-02 10:29:14,405 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_kill_note [2019-10-02 10:29:14,405 INFO L138 BoogieDeclarations]: Found implementation of procedure store_instr [2019-10-02 10:29:14,405 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_set_instr [2019-10-02 10:29:14,405 INFO L138 BoogieDeclarations]: Found implementation of procedure calc_vol [2019-10-02 10:29:14,405 INFO L138 BoogieDeclarations]: Found implementation of procedure set_voice_volume [2019-10-02 10:29:14,405 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_start_note [2019-10-02 10:29:14,405 INFO L138 BoogieDeclarations]: Found implementation of procedure freq_to_fnum [2019-10-02 10:29:14,406 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_command [2019-10-02 10:29:14,406 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_reset [2019-10-02 10:29:14,406 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_open [2019-10-02 10:29:14,406 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_close [2019-10-02 10:29:14,406 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_hw_control [2019-10-02 10:29:14,406 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_load_patch [2019-10-02 10:29:14,407 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_panning [2019-10-02 10:29:14,407 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_volume_method [2019-10-02 10:29:14,407 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_aftertouch [2019-10-02 10:29:14,407 INFO L138 BoogieDeclarations]: Found implementation of procedure bend_pitch [2019-10-02 10:29:14,407 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_controller [2019-10-02 10:29:14,407 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_bender [2019-10-02 10:29:14,408 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_alloc_voice [2019-10-02 10:29:14,408 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_setup_voice [2019-10-02 10:29:14,408 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_init [2019-10-02 10:29:14,408 INFO L138 BoogieDeclarations]: Found implementation of procedure init_opl3 [2019-10-02 10:29:14,408 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup_opl3 [2019-10-02 10:29:14,408 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-02 10:29:14,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__copy_from_user_1 [2019-10-02 10:29:14,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__copy_to_user_2 [2019-10-02 10:29:14,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv___copy_user_nocache_3 [2019-10-02 10:29:14,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv___copy_user_nocache_4 [2019-10-02 10:29:14,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_copy_from_user_7 [2019-10-02 10:29:14,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2019-10-02 10:29:14,409 INFO L138 BoogieDeclarations]: Found implementation of procedure strlen [2019-10-02 10:29:14,409 INFO L138 BoogieDeclarations]: Found implementation of procedure strnlen [2019-10-02 10:29:14,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_len [2019-10-02 10:29:14,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_ret_val [2019-10-02 10:29:14,410 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2019-10-02 10:29:14,410 INFO L138 BoogieDeclarations]: Found implementation of procedure __copy_user_nocache [2019-10-02 10:29:14,410 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2019-10-02 10:29:14,410 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_region [2019-10-02 10:29:14,410 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2019-10-02 10:29:14,410 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2019-10-02 10:29:14,411 INFO L138 BoogieDeclarations]: Found implementation of procedure compute_finetune [2019-10-02 10:29:14,411 INFO L138 BoogieDeclarations]: Found implementation of procedure conf_printf2 [2019-10-02 10:29:14,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-10-02 10:29:14,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-10-02 10:29:14,411 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2019-10-02 10:29:14,411 INFO L138 BoogieDeclarations]: Found implementation of procedure note_to_freq [2019-10-02 10:29:14,412 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2019-10-02 10:29:14,412 INFO L138 BoogieDeclarations]: Found implementation of procedure sequencer_init [2019-10-02 10:29:14,412 INFO L138 BoogieDeclarations]: Found implementation of procedure sound_alloc_synthdev [2019-10-02 10:29:14,412 INFO L138 BoogieDeclarations]: Found implementation of procedure sound_unload_synthdev [2019-10-02 10:29:14,412 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_fmt [2019-10-02 10:29:14,412 INFO L138 BoogieDeclarations]: Found implementation of procedure external_alloc [2019-10-02 10:29:14,413 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2019-10-02 10:29:14,413 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2019-10-02 10:29:14,413 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2019-10-02 10:29:14,413 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2019-10-02 10:29:14,413 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2019-10-02 10:29:14,413 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-02 10:29:14,414 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2019-10-02 10:29:14,414 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2019-10-02 10:29:14,414 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_fmt [2019-10-02 10:29:14,414 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2019-10-02 10:29:14,414 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2019-10-02 10:29:14,414 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2019-10-02 10:29:14,414 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2019-10-02 10:29:14,415 INFO L130 BoogieDeclarations]: Found specification of procedure __request_region [2019-10-02 10:29:14,415 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2019-10-02 10:29:14,415 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2019-10-02 10:29:14,415 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_len [2019-10-02 10:29:14,415 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-10-02 10:29:14,415 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-10-02 10:29:14,416 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2019-10-02 10:29:14,416 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2019-10-02 10:29:14,416 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2019-10-02 10:29:14,416 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-02 10:29:14,416 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-02 10:29:14,416 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-02 10:29:14,416 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2019-10-02 10:29:14,417 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-10-02 10:29:14,417 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-02 10:29:14,417 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-02 10:29:14,417 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2019-10-02 10:29:14,417 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2019-10-02 10:29:14,417 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2019-10-02 10:29:14,417 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2019-10-02 10:29:14,418 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2019-10-02 10:29:14,418 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2019-10-02 10:29:14,418 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ptr [2019-10-02 10:29:14,418 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2019-10-02 10:29:14,418 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2019-10-02 10:29:14,418 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2019-10-02 10:29:14,418 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2019-10-02 10:29:14,419 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2019-10-02 10:29:14,419 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__copy_to_user_2 [2019-10-02 10:29:14,419 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2019-10-02 10:29:14,419 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__copy_from_user_1 [2019-10-02 10:29:14,419 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2019-10-02 10:29:14,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-02 10:29:14,419 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_copy_from_user_7 [2019-10-02 10:29:14,420 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2019-10-02 10:29:14,420 INFO L130 BoogieDeclarations]: Found specification of procedure __copy_user_nocache [2019-10-02 10:29:14,420 INFO L130 BoogieDeclarations]: Found specification of procedure ldv___copy_user_nocache_3 [2019-10-02 10:29:14,420 INFO L130 BoogieDeclarations]: Found specification of procedure ldv___copy_user_nocache_4 [2019-10-02 10:29:14,420 INFO L130 BoogieDeclarations]: Found specification of procedure sequencer_init [2019-10-02 10:29:14,420 INFO L130 BoogieDeclarations]: Found specification of procedure note_to_freq [2019-10-02 10:29:14,420 INFO L130 BoogieDeclarations]: Found specification of procedure compute_finetune [2019-10-02 10:29:14,421 INFO L130 BoogieDeclarations]: Found specification of procedure conf_printf2 [2019-10-02 10:29:14,421 INFO L130 BoogieDeclarations]: Found specification of procedure sound_unload_synthdev [2019-10-02 10:29:14,421 INFO L130 BoogieDeclarations]: Found specification of procedure sound_alloc_synthdev [2019-10-02 10:29:14,421 INFO L130 BoogieDeclarations]: Found specification of procedure store_instr [2019-10-02 10:29:14,421 INFO L130 BoogieDeclarations]: Found specification of procedure freq_to_fnum [2019-10-02 10:29:14,421 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_command [2019-10-02 10:29:14,422 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_kill_note [2019-10-02 10:29:14,422 INFO L130 BoogieDeclarations]: Found specification of procedure enter_4op_mode [2019-10-02 10:29:14,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-02 10:29:14,422 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-02 10:29:14,422 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-02 10:29:14,422 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-02 10:29:14,422 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_ioctl [2019-10-02 10:29:14,423 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_detect [2019-10-02 10:29:14,423 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2019-10-02 10:29:14,423 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2019-10-02 10:29:14,423 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_set_instr [2019-10-02 10:29:14,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-02 10:29:14,423 INFO L130 BoogieDeclarations]: Found specification of procedure calc_vol [2019-10-02 10:29:14,424 INFO L130 BoogieDeclarations]: Found specification of procedure set_voice_volume [2019-10-02 10:29:14,424 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_start_note [2019-10-02 10:29:14,424 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_reset [2019-10-02 10:29:14,424 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_open [2019-10-02 10:29:14,424 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_close [2019-10-02 10:29:14,424 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_hw_control [2019-10-02 10:29:14,424 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_load_patch [2019-10-02 10:29:14,425 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_panning [2019-10-02 10:29:14,425 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_volume_method [2019-10-02 10:29:14,425 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_aftertouch [2019-10-02 10:29:14,425 INFO L130 BoogieDeclarations]: Found specification of procedure bend_pitch [2019-10-02 10:29:14,425 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_controller [2019-10-02 10:29:14,425 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_bender [2019-10-02 10:29:14,425 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_alloc_voice [2019-10-02 10:29:14,426 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_setup_voice [2019-10-02 10:29:14,426 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_init [2019-10-02 10:29:14,426 INFO L130 BoogieDeclarations]: Found specification of procedure init_opl3 [2019-10-02 10:29:14,426 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup_opl3 [2019-10-02 10:29:14,426 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-10-02 10:29:14,426 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-10-02 10:29:14,427 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-02 10:29:14,427 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2019-10-02 10:29:14,427 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2019-10-02 10:29:14,427 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2019-10-02 10:29:14,427 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_ret_val [2019-10-02 10:29:14,427 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2019-10-02 10:29:14,427 INFO L130 BoogieDeclarations]: Found specification of procedure external_alloc [2019-10-02 10:29:14,428 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-02 10:29:14,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-02 10:29:14,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-02 10:29:14,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-02 10:29:14,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-02 10:29:14,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2019-10-02 10:29:14,429 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2019-10-02 10:29:14,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2019-10-02 10:29:14,429 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2019-10-02 10:29:15,786 INFO L683 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2019-10-02 10:29:21,629 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-02 10:29:21,629 INFO L283 CfgBuilder]: Removed 2 assume(true) statements. [2019-10-02 10:29:21,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 10:29:21 BoogieIcfgContainer [2019-10-02 10:29:21,632 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-02 10:29:21,635 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-02 10:29:21,635 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-02 10:29:21,638 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-02 10:29:21,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.10 10:29:11" (1/3) ... [2019-10-02 10:29:21,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20dcce95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 10:29:21, skipping insertion in model container [2019-10-02 10:29:21,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:29:13" (2/3) ... [2019-10-02 10:29:21,640 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20dcce95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 10:29:21, skipping insertion in model container [2019-10-02 10:29:21,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 10:29:21" (3/3) ... [2019-10-02 10:29:21,644 INFO L109 eAbstractionObserver]: Analyzing ICFG linux-stable-42f9f8d-1-111_1a-sound--oss--opl3.ko-entry_point_ldv-val-v0.8.cil.out.i [2019-10-02 10:29:21,655 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-02 10:29:21,665 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-02 10:29:21,683 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-02 10:29:21,724 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-10-02 10:29:21,725 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-02 10:29:21,725 INFO L378 AbstractCegarLoop]: Hoare is true [2019-10-02 10:29:21,726 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-02 10:29:21,726 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-02 10:29:21,726 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-02 10:29:21,726 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-02 10:29:21,726 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-02 10:29:21,726 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-02 10:29:21,765 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states. [2019-10-02 10:29:21,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 498 [2019-10-02 10:29:21,789 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 10:29:21,791 INFO L411 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] [2019-10-02 10:29:21,793 INFO L418 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 10:29:21,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 10:29:21,799 INFO L82 PathProgramCache]: Analyzing trace with hash -1640497616, now seen corresponding path program 1 times [2019-10-02 10:29:21,801 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 10:29:21,802 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 10:29:21,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 10:29:21,870 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 10:29:21,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 10:29:22,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 10:29:23,364 INFO L134 CoverageAnalysis]: Checked inductivity of 6717 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6717 trivial. 0 not checked. [2019-10-02 10:29:23,366 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 10:29:23,367 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 10:29:23,372 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 10:29:23,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 10:29:23,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 10:29:23,389 INFO L87 Difference]: Start difference. First operand 926 states. Second operand 3 states. [2019-10-02 10:29:23,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 10:29:23,954 INFO L93 Difference]: Finished difference Result 1923 states and 2766 transitions. [2019-10-02 10:29:23,954 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 10:29:23,956 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 497 [2019-10-02 10:29:23,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 10:29:24,009 INFO L225 Difference]: With dead ends: 1923 [2019-10-02 10:29:24,009 INFO L226 Difference]: Without dead ends: 1066 [2019-10-02 10:29:24,021 INFO L640 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 [2019-10-02 10:29:24,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2019-10-02 10:29:24,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2019-10-02 10:29:24,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1066 states. [2019-10-02 10:29:24,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1506 transitions. [2019-10-02 10:29:24,200 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1506 transitions. Word has length 497 [2019-10-02 10:29:24,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 10:29:24,203 INFO L475 AbstractCegarLoop]: Abstraction has 1066 states and 1506 transitions. [2019-10-02 10:29:24,203 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 10:29:24,204 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1506 transitions. [2019-10-02 10:29:24,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 514 [2019-10-02 10:29:24,223 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 10:29:24,224 INFO L411 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] [2019-10-02 10:29:24,224 INFO L418 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 10:29:24,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 10:29:24,225 INFO L82 PathProgramCache]: Analyzing trace with hash 1165895321, now seen corresponding path program 1 times [2019-10-02 10:29:24,225 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 10:29:24,225 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 10:29:24,235 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 10:29:24,235 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 10:29:24,235 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 10:29:24,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 10:29:26,058 INFO L134 CoverageAnalysis]: Checked inductivity of 6719 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6717 trivial. 0 not checked. [2019-10-02 10:29:26,059 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 10:29:26,059 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-02 10:29:26,064 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-02 10:29:26,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-02 10:29:26,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-02 10:29:26,065 INFO L87 Difference]: Start difference. First operand 1066 states and 1506 transitions. Second operand 4 states. [2019-10-02 10:29:27,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 10:29:27,544 INFO L93 Difference]: Finished difference Result 2020 states and 2860 transitions. [2019-10-02 10:29:27,544 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 10:29:27,544 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 513 [2019-10-02 10:29:27,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 10:29:27,562 INFO L225 Difference]: With dead ends: 2020 [2019-10-02 10:29:27,562 INFO L226 Difference]: Without dead ends: 1066 [2019-10-02 10:29:27,576 INFO L640 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 [2019-10-02 10:29:27,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2019-10-02 10:29:27,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2019-10-02 10:29:27,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1066 states. [2019-10-02 10:29:27,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1504 transitions. [2019-10-02 10:29:27,707 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1504 transitions. Word has length 513 [2019-10-02 10:29:27,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 10:29:27,713 INFO L475 AbstractCegarLoop]: Abstraction has 1066 states and 1504 transitions. [2019-10-02 10:29:27,713 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-02 10:29:27,714 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1504 transitions. [2019-10-02 10:29:27,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 520 [2019-10-02 10:29:27,727 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 10:29:27,728 INFO L411 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] [2019-10-02 10:29:27,728 INFO L418 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 10:29:27,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 10:29:27,729 INFO L82 PathProgramCache]: Analyzing trace with hash -1940607939, now seen corresponding path program 1 times [2019-10-02 10:29:27,729 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 10:29:27,729 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 10:29:27,737 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 10:29:27,737 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 10:29:27,738 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 10:29:27,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 10:29:28,451 INFO L134 CoverageAnalysis]: Checked inductivity of 6719 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6717 trivial. 0 not checked. [2019-10-02 10:29:28,451 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 10:29:28,452 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-02 10:29:28,454 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-02 10:29:28,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-02 10:29:28,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-02 10:29:28,455 INFO L87 Difference]: Start difference. First operand 1066 states and 1504 transitions. Second operand 5 states. [2019-10-02 10:29:28,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 10:29:28,877 INFO L93 Difference]: Finished difference Result 2030 states and 2866 transitions. [2019-10-02 10:29:28,877 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-02 10:29:28,877 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 519 [2019-10-02 10:29:28,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 10:29:28,888 INFO L225 Difference]: With dead ends: 2030 [2019-10-02 10:29:28,888 INFO L226 Difference]: Without dead ends: 1066 [2019-10-02 10:29:28,895 INFO L640 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 [2019-10-02 10:29:28,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2019-10-02 10:29:28,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2019-10-02 10:29:28,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1066 states. [2019-10-02 10:29:28,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1502 transitions. [2019-10-02 10:29:28,944 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1502 transitions. Word has length 519 [2019-10-02 10:29:28,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 10:29:28,945 INFO L475 AbstractCegarLoop]: Abstraction has 1066 states and 1502 transitions. [2019-10-02 10:29:28,945 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-02 10:29:28,945 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1502 transitions. [2019-10-02 10:29:28,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2019-10-02 10:29:28,959 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 10:29:28,959 INFO L411 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] [2019-10-02 10:29:28,960 INFO L418 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 10:29:28,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 10:29:28,960 INFO L82 PathProgramCache]: Analyzing trace with hash 234558283, now seen corresponding path program 1 times [2019-10-02 10:29:28,961 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 10:29:28,961 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 10:29:28,968 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 10:29:28,968 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 10:29:28,968 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 10:29:29,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 10:29:29,668 INFO L134 CoverageAnalysis]: Checked inductivity of 6719 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6717 trivial. 0 not checked. [2019-10-02 10:29:29,668 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 10:29:29,669 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-02 10:29:29,669 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-02 10:29:29,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-02 10:29:29,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-02 10:29:29,670 INFO L87 Difference]: Start difference. First operand 1066 states and 1502 transitions. Second operand 5 states. [2019-10-02 10:29:29,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 10:29:29,743 INFO L93 Difference]: Finished difference Result 2028 states and 2860 transitions. [2019-10-02 10:29:29,743 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-02 10:29:29,743 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 526 [2019-10-02 10:29:29,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 10:29:29,753 INFO L225 Difference]: With dead ends: 2028 [2019-10-02 10:29:29,753 INFO L226 Difference]: Without dead ends: 1054 [2019-10-02 10:29:29,759 INFO L640 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 [2019-10-02 10:29:29,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1054 states. [2019-10-02 10:29:29,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1054 to 1054. [2019-10-02 10:29:29,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1054 states. [2019-10-02 10:29:29,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1054 states to 1054 states and 1480 transitions. [2019-10-02 10:29:29,810 INFO L78 Accepts]: Start accepts. Automaton has 1054 states and 1480 transitions. Word has length 526 [2019-10-02 10:29:29,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 10:29:29,811 INFO L475 AbstractCegarLoop]: Abstraction has 1054 states and 1480 transitions. [2019-10-02 10:29:29,811 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-02 10:29:29,811 INFO L276 IsEmpty]: Start isEmpty. Operand 1054 states and 1480 transitions. [2019-10-02 10:29:29,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 667 [2019-10-02 10:29:29,817 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 10:29:29,818 INFO L411 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] [2019-10-02 10:29:29,818 INFO L418 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 10:29:29,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 10:29:29,819 INFO L82 PathProgramCache]: Analyzing trace with hash 2013024119, now seen corresponding path program 1 times [2019-10-02 10:29:29,819 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 10:29:29,819 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 10:29:29,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 10:29:29,825 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 10:29:29,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 10:29:30,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 10:29:30,868 INFO L134 CoverageAnalysis]: Checked inductivity of 6908 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 6891 trivial. 0 not checked. [2019-10-02 10:29:30,869 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 10:29:30,869 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-10-02 10:29:31,041 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 10:29:32,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 10:29:32,415 INFO L256 TraceCheckSpWp]: Trace formula consists of 9112 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-02 10:29:32,460 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 10:29:32,752 INFO L134 CoverageAnalysis]: Checked inductivity of 6908 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 6873 trivial. 0 not checked. [2019-10-02 10:29:32,767 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-02 10:29:32,767 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2019-10-02 10:29:32,770 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-02 10:29:32,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-02 10:29:32,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-02 10:29:32,771 INFO L87 Difference]: Start difference. First operand 1054 states and 1480 transitions. Second operand 4 states. [2019-10-02 10:29:32,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 10:29:32,864 INFO L93 Difference]: Finished difference Result 2008 states and 2927 transitions. [2019-10-02 10:29:32,864 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 10:29:32,864 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 666 [2019-10-02 10:29:32,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 10:29:32,874 INFO L225 Difference]: With dead ends: 2008 [2019-10-02 10:29:32,875 INFO L226 Difference]: Without dead ends: 1066 [2019-10-02 10:29:32,883 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 668 GetRequests, 666 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-02 10:29:32,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2019-10-02 10:29:32,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1058. [2019-10-02 10:29:32,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1058 states. [2019-10-02 10:29:32,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1058 states to 1058 states and 1484 transitions. [2019-10-02 10:29:32,932 INFO L78 Accepts]: Start accepts. Automaton has 1058 states and 1484 transitions. Word has length 666 [2019-10-02 10:29:32,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 10:29:32,933 INFO L475 AbstractCegarLoop]: Abstraction has 1058 states and 1484 transitions. [2019-10-02 10:29:32,933 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-02 10:29:32,933 INFO L276 IsEmpty]: Start isEmpty. Operand 1058 states and 1484 transitions. [2019-10-02 10:29:32,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 673 [2019-10-02 10:29:32,940 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 10:29:32,941 INFO L411 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] [2019-10-02 10:29:32,941 INFO L418 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 10:29:32,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 10:29:32,942 INFO L82 PathProgramCache]: Analyzing trace with hash -392913981, now seen corresponding path program 1 times [2019-10-02 10:29:32,942 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 10:29:32,942 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 10:29:32,949 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 10:29:32,949 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 10:29:32,949 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 10:29:33,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 10:29:34,067 INFO L134 CoverageAnalysis]: Checked inductivity of 6953 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6951 trivial. 0 not checked. [2019-10-02 10:29:34,067 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 10:29:34,068 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 10:29:34,069 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 10:29:34,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 10:29:34,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 10:29:34,070 INFO L87 Difference]: Start difference. First operand 1058 states and 1484 transitions. Second operand 3 states. [2019-10-02 10:29:34,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 10:29:34,145 INFO L93 Difference]: Finished difference Result 2010 states and 2828 transitions. [2019-10-02 10:29:34,145 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 10:29:34,145 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 672 [2019-10-02 10:29:34,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 10:29:34,159 INFO L225 Difference]: With dead ends: 2010 [2019-10-02 10:29:34,160 INFO L226 Difference]: Without dead ends: 1064 [2019-10-02 10:29:34,168 INFO L640 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 [2019-10-02 10:29:34,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1064 states. [2019-10-02 10:29:34,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1064 to 1060. [2019-10-02 10:29:34,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1060 states. [2019-10-02 10:29:34,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1060 states to 1060 states and 1486 transitions. [2019-10-02 10:29:34,225 INFO L78 Accepts]: Start accepts. Automaton has 1060 states and 1486 transitions. Word has length 672 [2019-10-02 10:29:34,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 10:29:34,227 INFO L475 AbstractCegarLoop]: Abstraction has 1060 states and 1486 transitions. [2019-10-02 10:29:34,227 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 10:29:34,227 INFO L276 IsEmpty]: Start isEmpty. Operand 1060 states and 1486 transitions. [2019-10-02 10:29:34,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 699 [2019-10-02 10:29:34,239 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 10:29:34,240 INFO L411 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] [2019-10-02 10:29:34,241 INFO L418 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 10:29:34,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 10:29:34,242 INFO L82 PathProgramCache]: Analyzing trace with hash -1063783127, now seen corresponding path program 1 times [2019-10-02 10:29:34,242 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 10:29:34,242 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 10:29:34,249 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 10:29:34,250 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 10:29:34,250 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 10:29:34,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 10:29:35,243 INFO L134 CoverageAnalysis]: Checked inductivity of 7100 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7098 trivial. 0 not checked. [2019-10-02 10:29:35,243 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 10:29:35,244 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-02 10:29:35,244 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-02 10:29:35,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-02 10:29:35,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-02 10:29:35,245 INFO L87 Difference]: Start difference. First operand 1060 states and 1486 transitions. Second operand 4 states. [2019-10-02 10:29:37,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 10:29:37,925 INFO L93 Difference]: Finished difference Result 1893 states and 2671 transitions. [2019-10-02 10:29:37,925 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-02 10:29:37,925 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 698 [2019-10-02 10:29:37,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 10:29:37,937 INFO L225 Difference]: With dead ends: 1893 [2019-10-02 10:29:37,937 INFO L226 Difference]: Without dead ends: 919 [2019-10-02 10:29:37,943 INFO L640 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 [2019-10-02 10:29:37,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 919 states. [2019-10-02 10:29:37,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 919 to 919. [2019-10-02 10:29:37,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 919 states. [2019-10-02 10:29:37,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 919 states to 919 states and 1297 transitions. [2019-10-02 10:29:37,989 INFO L78 Accepts]: Start accepts. Automaton has 919 states and 1297 transitions. Word has length 698 [2019-10-02 10:29:37,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 10:29:37,991 INFO L475 AbstractCegarLoop]: Abstraction has 919 states and 1297 transitions. [2019-10-02 10:29:37,991 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-02 10:29:37,991 INFO L276 IsEmpty]: Start isEmpty. Operand 919 states and 1297 transitions. [2019-10-02 10:29:37,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 705 [2019-10-02 10:29:37,997 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 10:29:37,998 INFO L411 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] [2019-10-02 10:29:37,998 INFO L418 AbstractCegarLoop]: === Iteration 8 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 10:29:37,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 10:29:37,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1959652205, now seen corresponding path program 1 times [2019-10-02 10:29:37,999 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 10:29:37,999 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 10:29:38,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 10:29:38,005 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 10:29:38,005 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 10:29:38,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 10:29:39,834 INFO L134 CoverageAnalysis]: Checked inductivity of 7100 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7098 trivial. 0 not checked. [2019-10-02 10:29:39,835 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 10:29:39,835 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-10-02 10:29:39,836 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-02 10:29:39,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-02 10:29:39,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2019-10-02 10:29:39,838 INFO L87 Difference]: Start difference. First operand 919 states and 1297 transitions. Second operand 11 states. [2019-10-02 10:29:40,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 10:29:40,767 INFO L93 Difference]: Finished difference Result 1698 states and 2405 transitions. [2019-10-02 10:29:40,767 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-02 10:29:40,768 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 704 [2019-10-02 10:29:40,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 10:29:40,776 INFO L225 Difference]: With dead ends: 1698 [2019-10-02 10:29:40,776 INFO L226 Difference]: Without dead ends: 919 [2019-10-02 10:29:40,789 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2019-10-02 10:29:40,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 919 states. [2019-10-02 10:29:40,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 919 to 919. [2019-10-02 10:29:40,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 919 states. [2019-10-02 10:29:40,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 919 states to 919 states and 1296 transitions. [2019-10-02 10:29:40,840 INFO L78 Accepts]: Start accepts. Automaton has 919 states and 1296 transitions. Word has length 704 [2019-10-02 10:29:40,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 10:29:40,841 INFO L475 AbstractCegarLoop]: Abstraction has 919 states and 1296 transitions. [2019-10-02 10:29:40,841 INFO L476 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-02 10:29:40,841 INFO L276 IsEmpty]: Start isEmpty. Operand 919 states and 1296 transitions. [2019-10-02 10:29:40,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 705 [2019-10-02 10:29:40,848 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 10:29:40,848 INFO L411 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] [2019-10-02 10:29:40,849 INFO L418 AbstractCegarLoop]: === Iteration 9 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 10:29:40,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 10:29:40,849 INFO L82 PathProgramCache]: Analyzing trace with hash 1391679982, now seen corresponding path program 1 times [2019-10-02 10:29:40,849 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 10:29:40,850 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 10:29:40,857 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 10:29:40,857 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 10:29:40,858 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 10:29:41,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 10:29:41,819 INFO L134 CoverageAnalysis]: Checked inductivity of 7100 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 7097 trivial. 0 not checked. [2019-10-02 10:29:41,820 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 10:29:41,820 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-10-02 10:29:42,028 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 10:29:43,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 10:29:43,644 INFO L256 TraceCheckSpWp]: Trace formula consists of 9218 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-02 10:29:43,662 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 10:29:43,947 INFO L134 CoverageAnalysis]: Checked inductivity of 7100 backedges. 212 proven. 1 refuted. 0 times theorem prover too weak. 6887 trivial. 0 not checked. [2019-10-02 10:29:43,961 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-02 10:29:43,961 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2019-10-02 10:29:43,963 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-02 10:29:43,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-02 10:29:43,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-10-02 10:29:43,963 INFO L87 Difference]: Start difference. First operand 919 states and 1296 transitions. Second operand 5 states. [2019-10-02 10:29:44,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 10:29:44,041 INFO L93 Difference]: Finished difference Result 1641 states and 2326 transitions. [2019-10-02 10:29:44,042 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-02 10:29:44,042 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 704 [2019-10-02 10:29:44,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 10:29:44,051 INFO L225 Difference]: With dead ends: 1641 [2019-10-02 10:29:44,052 INFO L226 Difference]: Without dead ends: 924 [2019-10-02 10:29:44,058 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 707 GetRequests, 704 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-10-02 10:29:44,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2019-10-02 10:29:44,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 922. [2019-10-02 10:29:44,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 922 states. [2019-10-02 10:29:44,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 922 states to 922 states and 1300 transitions. [2019-10-02 10:29:44,126 INFO L78 Accepts]: Start accepts. Automaton has 922 states and 1300 transitions. Word has length 704 [2019-10-02 10:29:44,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 10:29:44,128 INFO L475 AbstractCegarLoop]: Abstraction has 922 states and 1300 transitions. [2019-10-02 10:29:44,128 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-02 10:29:44,128 INFO L276 IsEmpty]: Start isEmpty. Operand 922 states and 1300 transitions. [2019-10-02 10:29:44,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 731 [2019-10-02 10:29:44,136 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 10:29:44,136 INFO L411 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 39, 39, 39, 39, 12, 12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 10:29:44,137 INFO L418 AbstractCegarLoop]: === Iteration 10 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 10:29:44,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 10:29:44,137 INFO L82 PathProgramCache]: Analyzing trace with hash 638815252, now seen corresponding path program 2 times [2019-10-02 10:29:44,137 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 10:29:44,137 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 10:29:44,142 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 10:29:44,143 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 10:29:44,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 10:29:45,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 10:29:45,932 INFO L134 CoverageAnalysis]: Checked inductivity of 7285 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 7278 trivial. 0 not checked. [2019-10-02 10:29:45,932 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 10:29:45,933 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-10-02 10:29:46,100 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-10-02 10:29:47,824 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-10-02 10:29:47,824 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-02 10:29:47,848 INFO L256 TraceCheckSpWp]: Trace formula consists of 6016 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-02 10:29:47,864 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 10:29:48,204 INFO L134 CoverageAnalysis]: Checked inductivity of 7285 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7285 trivial. 0 not checked. [2019-10-02 10:29:48,218 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-02 10:29:48,218 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2019-10-02 10:29:48,223 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-02 10:29:48,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-02 10:29:48,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-10-02 10:29:48,224 INFO L87 Difference]: Start difference. First operand 922 states and 1300 transitions. Second operand 9 states. [2019-10-02 10:29:48,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 10:29:48,379 INFO L93 Difference]: Finished difference Result 1654 states and 2341 transitions. [2019-10-02 10:29:48,380 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-02 10:29:48,380 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 730 [2019-10-02 10:29:48,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 10:29:48,390 INFO L225 Difference]: With dead ends: 1654 [2019-10-02 10:29:48,390 INFO L226 Difference]: Without dead ends: 937 [2019-10-02 10:29:48,396 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 736 GetRequests, 727 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2019-10-02 10:29:48,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 937 states. [2019-10-02 10:29:48,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 937 to 935. [2019-10-02 10:29:48,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 935 states. [2019-10-02 10:29:48,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 935 states to 935 states and 1314 transitions. [2019-10-02 10:29:48,445 INFO L78 Accepts]: Start accepts. Automaton has 935 states and 1314 transitions. Word has length 730 [2019-10-02 10:29:48,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 10:29:48,446 INFO L475 AbstractCegarLoop]: Abstraction has 935 states and 1314 transitions. [2019-10-02 10:29:48,447 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-02 10:29:48,447 INFO L276 IsEmpty]: Start isEmpty. Operand 935 states and 1314 transitions. [2019-10-02 10:29:48,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 765 [2019-10-02 10:29:48,459 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 10:29:48,459 INFO L411 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 39, 39, 39, 39, 14, 14, 14, 14, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 10:29:48,460 INFO L418 AbstractCegarLoop]: === Iteration 11 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 10:29:48,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 10:29:48,460 INFO L82 PathProgramCache]: Analyzing trace with hash 2018667028, now seen corresponding path program 1 times [2019-10-02 10:29:48,460 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 10:29:48,460 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 10:29:48,467 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 10:29:48,467 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-10-02 10:29:48,467 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 10:29:48,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 10:29:49,571 INFO L134 CoverageAnalysis]: Checked inductivity of 7508 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 7494 trivial. 0 not checked. [2019-10-02 10:29:49,571 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 10:29:49,571 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-10-02 10:29:49,733 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 10:29:51,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 10:29:51,064 INFO L256 TraceCheckSpWp]: Trace formula consists of 9387 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-02 10:29:51,090 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 10:29:51,499 INFO L134 CoverageAnalysis]: Checked inductivity of 7508 backedges. 352 proven. 12 refuted. 0 times theorem prover too weak. 7144 trivial. 0 not checked. [2019-10-02 10:29:51,517 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-02 10:29:51,518 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2019-10-02 10:29:51,519 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-02 10:29:51,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-02 10:29:51,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-10-02 10:29:51,521 INFO L87 Difference]: Start difference. First operand 935 states and 1314 transitions. Second operand 7 states. [2019-10-02 10:29:51,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 10:29:51,599 INFO L93 Difference]: Finished difference Result 1667 states and 2354 transitions. [2019-10-02 10:29:51,599 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-02 10:29:51,599 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 764 [2019-10-02 10:29:51,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 10:29:51,608 INFO L225 Difference]: With dead ends: 1667 [2019-10-02 10:29:51,608 INFO L226 Difference]: Without dead ends: 940 [2019-10-02 10:29:51,617 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 769 GetRequests, 764 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-10-02 10:29:51,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 940 states. [2019-10-02 10:29:51,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 940 to 938. [2019-10-02 10:29:51,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 938 states. [2019-10-02 10:29:51,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 938 states to 938 states and 1318 transitions. [2019-10-02 10:29:51,659 INFO L78 Accepts]: Start accepts. Automaton has 938 states and 1318 transitions. Word has length 764 [2019-10-02 10:29:51,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 10:29:51,660 INFO L475 AbstractCegarLoop]: Abstraction has 938 states and 1318 transitions. [2019-10-02 10:29:51,661 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-02 10:29:51,661 INFO L276 IsEmpty]: Start isEmpty. Operand 938 states and 1318 transitions. [2019-10-02 10:29:51,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 791 [2019-10-02 10:29:51,669 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 10:29:51,669 INFO L411 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 39, 39, 39, 39, 16, 16, 16, 16, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 10:29:51,670 INFO L418 AbstractCegarLoop]: === Iteration 12 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 10:29:51,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 10:29:51,670 INFO L82 PathProgramCache]: Analyzing trace with hash -2109640902, now seen corresponding path program 2 times [2019-10-02 10:29:51,671 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 10:29:51,671 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 10:29:51,675 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 10:29:51,676 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 10:29:51,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 10:29:52,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 10:29:52,818 INFO L134 CoverageAnalysis]: Checked inductivity of 7769 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 7745 trivial. 0 not checked. [2019-10-02 10:29:52,819 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 10:29:52,819 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-10-02 10:29:52,975 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-10-02 10:29:54,817 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-10-02 10:29:54,818 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-02 10:29:54,843 INFO L256 TraceCheckSpWp]: Trace formula consists of 6055 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-02 10:29:54,859 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 10:29:55,132 INFO L134 CoverageAnalysis]: Checked inductivity of 7769 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7769 trivial. 0 not checked. [2019-10-02 10:29:55,147 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-02 10:29:55,147 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2019-10-02 10:29:55,148 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-10-02 10:29:55,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-10-02 10:29:55,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2019-10-02 10:29:55,149 INFO L87 Difference]: Start difference. First operand 938 states and 1318 transitions. Second operand 13 states. [2019-10-02 10:29:55,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 10:29:55,384 INFO L93 Difference]: Finished difference Result 1674 states and 2362 transitions. [2019-10-02 10:29:55,384 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-02 10:29:55,385 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 790 [2019-10-02 10:29:55,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 10:29:55,393 INFO L225 Difference]: With dead ends: 1674 [2019-10-02 10:29:55,394 INFO L226 Difference]: Without dead ends: 947 [2019-10-02 10:29:55,398 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 799 GetRequests, 785 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2019-10-02 10:29:55,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 947 states. [2019-10-02 10:29:55,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 947 to 945. [2019-10-02 10:29:55,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 945 states. [2019-10-02 10:29:55,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 945 states to 945 states and 1325 transitions. [2019-10-02 10:29:55,444 INFO L78 Accepts]: Start accepts. Automaton has 945 states and 1325 transitions. Word has length 790 [2019-10-02 10:29:55,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 10:29:55,446 INFO L475 AbstractCegarLoop]: Abstraction has 945 states and 1325 transitions. [2019-10-02 10:29:55,446 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-10-02 10:29:55,446 INFO L276 IsEmpty]: Start isEmpty. Operand 945 states and 1325 transitions. [2019-10-02 10:29:55,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 818 [2019-10-02 10:29:55,455 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 10:29:55,456 INFO L411 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 39, 39, 39, 39, 18, 18, 18, 18, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 1, 1, 1, 1, 1] [2019-10-02 10:29:55,457 INFO L418 AbstractCegarLoop]: === Iteration 13 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 10:29:55,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 10:29:55,457 INFO L82 PathProgramCache]: Analyzing trace with hash 1375549372, now seen corresponding path program 1 times [2019-10-02 10:29:55,457 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 10:29:55,457 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 10:29:55,463 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 10:29:55,464 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-10-02 10:29:55,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 10:29:56,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 10:29:56,939 INFO L134 CoverageAnalysis]: Checked inductivity of 8068 backedges. 2 proven. 35 refuted. 0 times theorem prover too weak. 8031 trivial. 0 not checked. [2019-10-02 10:29:56,940 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 10:29:56,940 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-10-02 10:29:57,113 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 10:29:58,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 10:29:58,513 INFO L256 TraceCheckSpWp]: Trace formula consists of 9503 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-02 10:29:58,529 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 10:29:58,772 INFO L134 CoverageAnalysis]: Checked inductivity of 8068 backedges. 492 proven. 35 refuted. 0 times theorem prover too weak. 7541 trivial. 0 not checked. [2019-10-02 10:29:58,787 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-02 10:29:58,787 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2019-10-02 10:29:58,788 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-02 10:29:58,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-02 10:29:58,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-10-02 10:29:58,789 INFO L87 Difference]: Start difference. First operand 945 states and 1325 transitions. Second operand 9 states. [2019-10-02 10:29:58,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 10:29:58,890 INFO L93 Difference]: Finished difference Result 1681 states and 2368 transitions. [2019-10-02 10:29:58,891 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-02 10:29:58,891 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 817 [2019-10-02 10:29:58,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 10:29:58,900 INFO L225 Difference]: With dead ends: 1681 [2019-10-02 10:29:58,900 INFO L226 Difference]: Without dead ends: 950 [2019-10-02 10:29:58,904 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 824 GetRequests, 817 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-10-02 10:29:58,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 950 states. [2019-10-02 10:29:58,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 950 to 948. [2019-10-02 10:29:58,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 948 states. [2019-10-02 10:29:58,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 948 states to 948 states and 1329 transitions. [2019-10-02 10:29:58,949 INFO L78 Accepts]: Start accepts. Automaton has 948 states and 1329 transitions. Word has length 817 [2019-10-02 10:29:58,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 10:29:58,951 INFO L475 AbstractCegarLoop]: Abstraction has 948 states and 1329 transitions. [2019-10-02 10:29:58,951 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-02 10:29:58,951 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 1329 transitions. [2019-10-02 10:29:58,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 844 [2019-10-02 10:29:58,960 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 10:29:58,961 INFO L411 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 39, 39, 39, 39, 20, 20, 20, 20, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1] [2019-10-02 10:29:58,961 INFO L418 AbstractCegarLoop]: === Iteration 14 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 10:29:58,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 10:29:58,962 INFO L82 PathProgramCache]: Analyzing trace with hash -1996743082, now seen corresponding path program 2 times [2019-10-02 10:29:58,962 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 10:29:58,962 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 10:29:58,967 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 10:29:58,967 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 10:29:58,967 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 10:29:59,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 10:30:00,329 INFO L134 CoverageAnalysis]: Checked inductivity of 8405 backedges. 2 proven. 51 refuted. 0 times theorem prover too weak. 8352 trivial. 0 not checked. [2019-10-02 10:30:00,329 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 10:30:00,329 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-10-02 10:30:00,497 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-10-02 10:30:03,124 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-02 10:30:03,124 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-02 10:30:03,160 INFO L256 TraceCheckSpWp]: Trace formula consists of 9568 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-02 10:30:03,177 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 10:30:03,622 INFO L134 CoverageAnalysis]: Checked inductivity of 8405 backedges. 562 proven. 51 refuted. 0 times theorem prover too weak. 7792 trivial. 0 not checked. [2019-10-02 10:30:03,647 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-02 10:30:03,648 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2019-10-02 10:30:03,649 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-02 10:30:03,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-02 10:30:03,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-10-02 10:30:03,650 INFO L87 Difference]: Start difference. First operand 948 states and 1329 transitions. Second operand 10 states. [2019-10-02 10:30:03,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 10:30:03,744 INFO L93 Difference]: Finished difference Result 1684 states and 2372 transitions. [2019-10-02 10:30:03,745 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-02 10:30:03,745 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 843 [2019-10-02 10:30:03,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 10:30:03,755 INFO L225 Difference]: With dead ends: 1684 [2019-10-02 10:30:03,755 INFO L226 Difference]: Without dead ends: 953 [2019-10-02 10:30:03,759 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 851 GetRequests, 843 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-10-02 10:30:03,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 953 states. [2019-10-02 10:30:03,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 953 to 951. [2019-10-02 10:30:03,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 951 states. [2019-10-02 10:30:03,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 951 states to 951 states and 1333 transitions. [2019-10-02 10:30:03,827 INFO L78 Accepts]: Start accepts. Automaton has 951 states and 1333 transitions. Word has length 843 [2019-10-02 10:30:03,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 10:30:03,828 INFO L475 AbstractCegarLoop]: Abstraction has 951 states and 1333 transitions. [2019-10-02 10:30:03,829 INFO L476 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-02 10:30:03,829 INFO L276 IsEmpty]: Start isEmpty. Operand 951 states and 1333 transitions. [2019-10-02 10:30:03,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 870 [2019-10-02 10:30:03,844 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 10:30:03,845 INFO L411 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 39, 39, 39, 39, 22, 22, 22, 22, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 7, 7, 7, 7, 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, 1, 1, 1, 1, 1] [2019-10-02 10:30:03,845 INFO L418 AbstractCegarLoop]: === Iteration 15 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 10:30:03,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 10:30:03,846 INFO L82 PathProgramCache]: Analyzing trace with hash 776706160, now seen corresponding path program 3 times [2019-10-02 10:30:03,846 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 10:30:03,846 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 10:30:03,851 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 10:30:03,852 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-10-02 10:30:03,852 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 10:30:04,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 10:30:06,228 INFO L134 CoverageAnalysis]: Checked inductivity of 8780 backedges. 2 proven. 70 refuted. 0 times theorem prover too weak. 8708 trivial. 0 not checked. [2019-10-02 10:30:06,228 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 10:30:06,229 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-10-02 10:30:06,427 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-10-02 10:30:11,413 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-10-02 10:30:11,413 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-02 10:30:11,446 INFO L256 TraceCheckSpWp]: Trace formula consists of 6556 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-02 10:30:11,461 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 10:30:11,509 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-02 10:30:11,933 INFO L134 CoverageAnalysis]: Checked inductivity of 8780 backedges. 266 proven. 0 refuted. 0 times theorem prover too weak. 8514 trivial. 0 not checked. [2019-10-02 10:30:11,952 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-02 10:30:11,953 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2019-10-02 10:30:11,954 INFO L454 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-02 10:30:11,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-02 10:30:11,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2019-10-02 10:30:11,955 INFO L87 Difference]: Start difference. First operand 951 states and 1333 transitions. Second operand 14 states. [2019-10-02 10:30:12,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 10:30:12,667 INFO L93 Difference]: Finished difference Result 1887 states and 2691 transitions. [2019-10-02 10:30:12,667 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-02 10:30:12,668 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 869 [2019-10-02 10:30:12,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 10:30:12,675 INFO L225 Difference]: With dead ends: 1887 [2019-10-02 10:30:12,676 INFO L226 Difference]: Without dead ends: 957 [2019-10-02 10:30:12,682 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 880 GetRequests, 866 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2019-10-02 10:30:12,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 957 states. [2019-10-02 10:30:12,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 957 to 955. [2019-10-02 10:30:12,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 955 states. [2019-10-02 10:30:12,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 955 states to 955 states and 1338 transitions. [2019-10-02 10:30:12,732 INFO L78 Accepts]: Start accepts. Automaton has 955 states and 1338 transitions. Word has length 869 [2019-10-02 10:30:12,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 10:30:12,733 INFO L475 AbstractCegarLoop]: Abstraction has 955 states and 1338 transitions. [2019-10-02 10:30:12,733 INFO L476 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-02 10:30:12,733 INFO L276 IsEmpty]: Start isEmpty. Operand 955 states and 1338 transitions. [2019-10-02 10:30:12,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 935 [2019-10-02 10:30:12,745 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 10:30:12,746 INFO L411 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 39, 39, 39, 39, 39, 24, 24, 24, 24, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 8, 8, 8, 8, 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, 1, 1, 1, 1, 1] [2019-10-02 10:30:12,746 INFO L418 AbstractCegarLoop]: === Iteration 16 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 10:30:12,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 10:30:12,747 INFO L82 PathProgramCache]: Analyzing trace with hash 1915295325, now seen corresponding path program 1 times [2019-10-02 10:30:12,747 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 10:30:12,747 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 10:30:12,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 10:30:12,753 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-10-02 10:30:12,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 10:30:13,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 10:30:14,594 INFO L134 CoverageAnalysis]: Checked inductivity of 11455 backedges. 2 proven. 92 refuted. 0 times theorem prover too weak. 11361 trivial. 0 not checked. [2019-10-02 10:30:14,595 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 10:30:14,595 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-10-02 10:30:14,766 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 10:30:16,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 10:30:16,228 INFO L256 TraceCheckSpWp]: Trace formula consists of 9932 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-02 10:30:16,242 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 10:30:16,686 INFO L134 CoverageAnalysis]: Checked inductivity of 11455 backedges. 702 proven. 92 refuted. 0 times theorem prover too weak. 10661 trivial. 0 not checked. [2019-10-02 10:30:16,703 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-02 10:30:16,703 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2019-10-02 10:30:16,704 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-02 10:30:16,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-02 10:30:16,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-10-02 10:30:16,705 INFO L87 Difference]: Start difference. First operand 955 states and 1338 transitions. Second operand 12 states. [2019-10-02 10:30:16,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 10:30:16,845 INFO L93 Difference]: Finished difference Result 1689 states and 2378 transitions. [2019-10-02 10:30:16,846 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-02 10:30:16,846 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 934 [2019-10-02 10:30:16,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 10:30:16,854 INFO L225 Difference]: With dead ends: 1689 [2019-10-02 10:30:16,854 INFO L226 Difference]: Without dead ends: 958 [2019-10-02 10:30:16,858 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 944 GetRequests, 934 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-10-02 10:30:16,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 958 states. [2019-10-02 10:30:16,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 958 to 958. [2019-10-02 10:30:16,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 958 states. [2019-10-02 10:30:16,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 958 states to 958 states and 1342 transitions. [2019-10-02 10:30:16,900 INFO L78 Accepts]: Start accepts. Automaton has 958 states and 1342 transitions. Word has length 934 [2019-10-02 10:30:16,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 10:30:16,901 INFO L475 AbstractCegarLoop]: Abstraction has 958 states and 1342 transitions. [2019-10-02 10:30:16,901 INFO L476 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-02 10:30:16,902 INFO L276 IsEmpty]: Start isEmpty. Operand 958 states and 1342 transitions. [2019-10-02 10:30:16,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 961 [2019-10-02 10:30:16,912 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 10:30:16,914 INFO L411 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 39, 39, 39, 39, 39, 26, 26, 26, 26, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 9, 9, 9, 9, 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, 1, 1, 1, 1, 1] [2019-10-02 10:30:16,914 INFO L418 AbstractCegarLoop]: === Iteration 17 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 10:30:16,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 10:30:16,915 INFO L82 PathProgramCache]: Analyzing trace with hash -773192265, now seen corresponding path program 2 times [2019-10-02 10:30:16,915 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 10:30:16,916 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 10:30:16,921 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 10:30:16,921 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 10:30:16,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 10:30:18,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 10:30:19,315 INFO L134 CoverageAnalysis]: Checked inductivity of 11906 backedges. 0 proven. 381 refuted. 0 times theorem prover too weak. 11525 trivial. 0 not checked. [2019-10-02 10:30:19,316 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 10:30:19,316 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-10-02 10:30:19,482 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-10-02 10:30:34,228 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-02 10:30:34,229 INFO L250 tOrderPrioritization]: Conjunction of SSA is unknown [2019-10-02 10:30:34,342 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-10-02 10:30:34,343 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2019-10-02 10:30:34,343 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-02 10:30:34,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-02 10:30:34,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-02 10:30:34,344 INFO L87 Difference]: Start difference. First operand 958 states and 1342 transitions. Second operand 7 states. [2019-10-02 10:30:34,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 10:30:34,823 INFO L93 Difference]: Finished difference Result 1896 states and 2699 transitions. [2019-10-02 10:30:34,824 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-02 10:30:34,824 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 960 [2019-10-02 10:30:34,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 10:30:34,831 INFO L225 Difference]: With dead ends: 1896 [2019-10-02 10:30:34,831 INFO L226 Difference]: Without dead ends: 959 [2019-10-02 10:30:34,836 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-10-02 10:30:34,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2019-10-02 10:30:34,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 959. [2019-10-02 10:30:34,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 959 states. [2019-10-02 10:30:34,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1343 transitions. [2019-10-02 10:30:34,881 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1343 transitions. Word has length 960 [2019-10-02 10:30:34,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 10:30:34,882 INFO L475 AbstractCegarLoop]: Abstraction has 959 states and 1343 transitions. [2019-10-02 10:30:34,882 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-02 10:30:34,882 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1343 transitions. [2019-10-02 10:30:34,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1000 [2019-10-02 10:30:34,893 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 10:30:34,894 INFO L411 BasicCegarLoop]: trace histogram [78, 39, 39, 39, 39, 39, 39, 39, 39, 26, 26, 26, 26, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 9, 9, 9, 9, 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, 1, 1, 1, 1, 1] [2019-10-02 10:30:34,894 INFO L418 AbstractCegarLoop]: === Iteration 18 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 10:30:34,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 10:30:34,895 INFO L82 PathProgramCache]: Analyzing trace with hash 1411198916, now seen corresponding path program 3 times [2019-10-02 10:30:34,895 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 10:30:34,895 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 10:30:34,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 10:30:34,900 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-10-02 10:30:34,901 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 10:30:36,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 10:30:36,861 INFO L134 CoverageAnalysis]: Checked inductivity of 15689 backedges. 0 proven. 573 refuted. 0 times theorem prover too weak. 15116 trivial. 0 not checked. [2019-10-02 10:30:36,862 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 10:30:36,862 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-10-02 10:30:37,035 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-10-02 10:30:41,122 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-10-02 10:30:41,122 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-02 10:30:41,167 INFO L256 TraceCheckSpWp]: Trace formula consists of 6568 conjuncts, 13 conjunts are in the unsatisfiable core [2019-10-02 10:30:41,182 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 10:30:41,768 INFO L134 CoverageAnalysis]: Checked inductivity of 15689 backedges. 570 proven. 3 refuted. 0 times theorem prover too weak. 15116 trivial. 0 not checked. [2019-10-02 10:30:41,788 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-02 10:30:41,789 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2019-10-02 10:30:41,790 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-02 10:30:41,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-02 10:30:41,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2019-10-02 10:30:41,790 INFO L87 Difference]: Start difference. First operand 959 states and 1343 transitions. Second operand 10 states. [2019-10-02 10:30:42,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 10:30:42,467 INFO L93 Difference]: Finished difference Result 1898 states and 2701 transitions. [2019-10-02 10:30:42,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-02 10:30:42,468 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 999 [2019-10-02 10:30:42,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 10:30:42,474 INFO L225 Difference]: With dead ends: 1898 [2019-10-02 10:30:42,474 INFO L226 Difference]: Without dead ends: 960 [2019-10-02 10:30:42,479 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 1008 GetRequests, 996 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2019-10-02 10:30:42,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2019-10-02 10:30:42,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 960. [2019-10-02 10:30:42,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 960 states. [2019-10-02 10:30:42,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 1344 transitions. [2019-10-02 10:30:42,525 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 1344 transitions. Word has length 999 [2019-10-02 10:30:42,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 10:30:42,526 INFO L475 AbstractCegarLoop]: Abstraction has 960 states and 1344 transitions. [2019-10-02 10:30:42,526 INFO L476 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-02 10:30:42,526 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 1344 transitions. [2019-10-02 10:30:42,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1039 [2019-10-02 10:30:42,541 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 10:30:42,542 INFO L411 BasicCegarLoop]: trace histogram [117, 39, 39, 39, 39, 39, 39, 39, 39, 26, 26, 26, 26, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 9, 9, 9, 9, 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, 1, 1, 1, 1, 1] [2019-10-02 10:30:42,542 INFO L418 AbstractCegarLoop]: === Iteration 19 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 10:30:42,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 10:30:42,542 INFO L82 PathProgramCache]: Analyzing trace with hash -328235241, now seen corresponding path program 4 times [2019-10-02 10:30:42,543 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 10:30:42,543 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 10:30:42,547 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 10:30:42,547 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-10-02 10:30:42,547 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 10:30:44,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 10:30:45,737 INFO L134 CoverageAnalysis]: Checked inductivity of 20993 backedges. 0 proven. 842 refuted. 0 times theorem prover too weak. 20151 trivial. 0 not checked. [2019-10-02 10:30:45,737 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 10:30:45,737 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-10-02 10:30:45,911 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-10-02 10:30:59,407 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-02 10:30:59,407 INFO L250 tOrderPrioritization]: Conjunction of SSA is unknown [2019-10-02 10:30:59,541 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-10-02 10:30:59,541 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2019-10-02 10:30:59,542 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-02 10:30:59,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-02 10:30:59,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-10-02 10:30:59,543 INFO L87 Difference]: Start difference. First operand 960 states and 1344 transitions. Second operand 9 states. [2019-10-02 10:31:00,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 10:31:00,108 INFO L93 Difference]: Finished difference Result 1900 states and 2703 transitions. [2019-10-02 10:31:00,109 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-02 10:31:00,109 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1038 [2019-10-02 10:31:00,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 10:31:00,114 INFO L225 Difference]: With dead ends: 1900 [2019-10-02 10:31:00,114 INFO L226 Difference]: Without dead ends: 961 [2019-10-02 10:31:00,117 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2019-10-02 10:31:00,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 961 states. [2019-10-02 10:31:00,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 961 to 961. [2019-10-02 10:31:00,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 961 states. [2019-10-02 10:31:00,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 961 states to 961 states and 1345 transitions. [2019-10-02 10:31:00,158 INFO L78 Accepts]: Start accepts. Automaton has 961 states and 1345 transitions. Word has length 1038 [2019-10-02 10:31:00,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 10:31:00,159 INFO L475 AbstractCegarLoop]: Abstraction has 961 states and 1345 transitions. [2019-10-02 10:31:00,159 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-02 10:31:00,159 INFO L276 IsEmpty]: Start isEmpty. Operand 961 states and 1345 transitions. [2019-10-02 10:31:00,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1078 [2019-10-02 10:31:00,172 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 10:31:00,172 INFO L411 BasicCegarLoop]: trace histogram [156, 39, 39, 39, 39, 39, 39, 39, 39, 26, 26, 26, 26, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 9, 9, 9, 9, 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, 1, 1, 1, 1, 1] [2019-10-02 10:31:00,173 INFO L418 AbstractCegarLoop]: === Iteration 20 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 10:31:00,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 10:31:00,173 INFO L82 PathProgramCache]: Analyzing trace with hash -210075548, now seen corresponding path program 5 times [2019-10-02 10:31:00,173 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 10:31:00,174 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 10:31:00,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 10:31:00,178 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-10-02 10:31:00,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 10:31:11,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 10:31:18,901 WARN L191 SmtUtils]: Spent 4.27 s on a formula simplification. DAG size of input: 501 DAG size of output: 155 [2019-10-02 10:31:23,242 WARN L191 SmtUtils]: Spent 3.97 s on a formula simplification. DAG size of input: 498 DAG size of output: 151 [2019-10-02 10:31:28,149 WARN L191 SmtUtils]: Spent 4.62 s on a formula simplification. DAG size of input: 495 DAG size of output: 148 [2019-10-02 10:31:32,533 WARN L191 SmtUtils]: Spent 4.22 s on a formula simplification. DAG size of input: 492 DAG size of output: 145 [2019-10-02 10:31:36,434 WARN L191 SmtUtils]: Spent 3.67 s on a formula simplification. DAG size of input: 489 DAG size of output: 142 [2019-10-02 10:31:40,766 WARN L191 SmtUtils]: Spent 4.11 s on a formula simplification. DAG size of input: 486 DAG size of output: 139 [2019-10-02 10:31:44,557 WARN L191 SmtUtils]: Spent 3.61 s on a formula simplification. DAG size of input: 483 DAG size of output: 136 [2019-10-02 10:31:48,036 WARN L191 SmtUtils]: Spent 3.29 s on a formula simplification. DAG size of input: 480 DAG size of output: 133 [2019-10-02 10:31:51,790 WARN L191 SmtUtils]: Spent 3.56 s on a formula simplification. DAG size of input: 477 DAG size of output: 130 [2019-10-02 10:31:55,662 WARN L191 SmtUtils]: Spent 3.66 s on a formula simplification. DAG size of input: 474 DAG size of output: 127 [2019-10-02 10:31:59,428 WARN L191 SmtUtils]: Spent 3.54 s on a formula simplification. DAG size of input: 471 DAG size of output: 124 [2019-10-02 10:32:03,000 WARN L191 SmtUtils]: Spent 3.33 s on a formula simplification. DAG size of input: 468 DAG size of output: 121 [2019-10-02 10:32:06,909 WARN L191 SmtUtils]: Spent 3.67 s on a formula simplification. DAG size of input: 465 DAG size of output: 118 [2019-10-02 10:32:10,634 WARN L191 SmtUtils]: Spent 3.48 s on a formula simplification. DAG size of input: 458 DAG size of output: 115 [2019-10-02 10:32:13,684 WARN L191 SmtUtils]: Spent 2.81 s on a formula simplification. DAG size of input: 455 DAG size of output: 112 [2019-10-02 10:32:16,959 WARN L191 SmtUtils]: Spent 3.01 s on a formula simplification. DAG size of input: 452 DAG size of output: 109 [2019-10-02 10:32:18,367 WARN L191 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 235 DAG size of output: 99 [2019-10-02 10:32:19,508 WARN L191 SmtUtils]: Spent 973.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 94 [2019-10-02 10:32:20,583 WARN L191 SmtUtils]: Spent 908.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 91 [2019-10-02 10:32:21,653 WARN L191 SmtUtils]: Spent 902.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 87 [2019-10-02 10:32:22,663 WARN L191 SmtUtils]: Spent 841.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 84 [2019-10-02 10:32:23,639 WARN L191 SmtUtils]: Spent 796.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 81 [2019-10-02 10:32:24,664 WARN L191 SmtUtils]: Spent 850.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 78 [2019-10-02 10:32:25,468 WARN L191 SmtUtils]: Spent 636.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 75 [2019-10-02 10:32:26,228 WARN L191 SmtUtils]: Spent 580.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 72 [2019-10-02 10:32:26,649 WARN L191 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 65 [2019-10-02 10:32:26,902 WARN L191 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 56 [2019-10-02 10:32:27,149 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 53 [2019-10-02 10:32:27,393 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 50 [2019-10-02 10:32:27,631 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 47 [2019-10-02 10:32:27,870 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 44 [2019-10-02 10:32:28,098 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 41 [2019-10-02 10:32:28,331 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 38 [2019-10-02 10:32:28,569 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 35 [2019-10-02 10:32:33,315 INFO L134 CoverageAnalysis]: Checked inductivity of 27818 backedges. 2966 proven. 3120 refuted. 0 times theorem prover too weak. 21732 trivial. 0 not checked. [2019-10-02 10:32:33,316 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 10:32:33,316 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-10-02 10:32:33,494 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1