java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/ldv-validator-v0.8/linux-stable-42f9f8d-1-111_1a-sound--oss--opl3.ko-entry_point_ldv-val-v0.8.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:02:38,749 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:02:38,752 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:02:38,765 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:02:38,766 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:02:38,767 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:02:38,769 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:02:38,770 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:02:38,772 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:02:38,773 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:02:38,774 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:02:38,775 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:02:38,776 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:02:38,777 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:02:38,778 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:02:38,779 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:02:38,780 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:02:38,781 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:02:38,783 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:02:38,785 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:02:38,786 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:02:38,788 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:02:38,789 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:02:38,790 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:02:38,792 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:02:38,793 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:02:38,793 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:02:38,794 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:02:38,794 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:02:38,795 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:02:38,796 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:02:38,797 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:02:38,797 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:02:38,798 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:02:38,799 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:02:38,799 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:02:38,800 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:02:38,800 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:02:38,801 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:02:38,802 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:02:38,802 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:02:38,803 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 01:02:38,829 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:02:38,829 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:02:38,830 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:02:38,831 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:02:38,831 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:02:38,831 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:02:38,831 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:02:38,831 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:02:38,832 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:02:38,832 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:02:38,832 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:02:38,832 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:02:38,832 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:02:38,833 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:02:38,833 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:02:38,833 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:02:38,833 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:02:38,833 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:02:38,834 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:02:38,834 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:02:38,834 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:02:38,834 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:02:38,834 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:02:38,835 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:02:38,835 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:02:38,835 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:02:38,835 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:02:38,835 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:02:38,836 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-15 01:02:39,115 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:02:39,129 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:02:39,132 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:02:39,134 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:02:39,134 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:02:39,135 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-validator-v0.8/linux-stable-42f9f8d-1-111_1a-sound--oss--opl3.ko-entry_point_ldv-val-v0.8.cil.out.i [2019-10-15 01:02:39,198 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84c60fa68/a38a4e88dbde47e4913e711936944efb/FLAG26bc09ffb [2019-10-15 01:02:39,982 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:02:39,984 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-validator-v0.8/linux-stable-42f9f8d-1-111_1a-sound--oss--opl3.ko-entry_point_ldv-val-v0.8.cil.out.i [2019-10-15 01:02:40,024 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84c60fa68/a38a4e88dbde47e4913e711936944efb/FLAG26bc09ffb [2019-10-15 01:02:40,082 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84c60fa68/a38a4e88dbde47e4913e711936944efb [2019-10-15 01:02:40,092 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:02:40,093 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:02:40,094 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:02:40,094 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:02:40,097 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:02:40,098 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:02:40" (1/1) ... [2019-10-15 01:02:40,101 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fc0c90b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:02:40, skipping insertion in model container [2019-10-15 01:02:40,101 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:02:40" (1/1) ... [2019-10-15 01:02:40,108 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:02:40,222 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:02:41,351 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:02:41,448 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:02:41,746 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:02:42,024 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:02:42,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:02:42 WrapperNode [2019-10-15 01:02:42,025 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:02:42,026 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:02:42,027 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:02:42,027 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:02:42,045 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:02:42" (1/1) ... [2019-10-15 01:02:42,045 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:02:42" (1/1) ... [2019-10-15 01:02:42,157 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:02:42" (1/1) ... [2019-10-15 01:02:42,158 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:02:42" (1/1) ... [2019-10-15 01:02:42,316 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:02:42" (1/1) ... [2019-10-15 01:02:42,334 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:02:42" (1/1) ... [2019-10-15 01:02:42,356 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:02:42" (1/1) ... [2019-10-15 01:02:42,380 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:02:42,381 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:02:42,381 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:02:42,381 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:02:42,384 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:02:42" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:02:42,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:02:42,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:02:42,465 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2019-10-15 01:02:42,466 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2019-10-15 01:02:42,466 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2019-10-15 01:02:42,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-10-15 01:02:42,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2019-10-15 01:02:42,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2019-10-15 01:02:42,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2019-10-15 01:02:42,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2019-10-15 01:02:42,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ptr [2019-10-15 01:02:42,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2019-10-15 01:02:42,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2019-10-15 01:02:42,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2019-10-15 01:02:42,469 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2019-10-15 01:02:42,469 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2019-10-15 01:02:42,469 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2019-10-15 01:02:42,470 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2019-10-15 01:02:42,470 INFO L138 BoogieDeclarations]: Found implementation of procedure enter_4op_mode [2019-10-15 01:02:42,471 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_ioctl [2019-10-15 01:02:42,472 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_detect [2019-10-15 01:02:42,472 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_kill_note [2019-10-15 01:02:42,472 INFO L138 BoogieDeclarations]: Found implementation of procedure store_instr [2019-10-15 01:02:42,472 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_set_instr [2019-10-15 01:02:42,473 INFO L138 BoogieDeclarations]: Found implementation of procedure calc_vol [2019-10-15 01:02:42,473 INFO L138 BoogieDeclarations]: Found implementation of procedure set_voice_volume [2019-10-15 01:02:42,473 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_start_note [2019-10-15 01:02:42,473 INFO L138 BoogieDeclarations]: Found implementation of procedure freq_to_fnum [2019-10-15 01:02:42,473 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_command [2019-10-15 01:02:42,473 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_reset [2019-10-15 01:02:42,473 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_open [2019-10-15 01:02:42,474 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_close [2019-10-15 01:02:42,474 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_hw_control [2019-10-15 01:02:42,474 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_load_patch [2019-10-15 01:02:42,474 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_panning [2019-10-15 01:02:42,474 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_volume_method [2019-10-15 01:02:42,475 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_aftertouch [2019-10-15 01:02:42,475 INFO L138 BoogieDeclarations]: Found implementation of procedure bend_pitch [2019-10-15 01:02:42,475 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_controller [2019-10-15 01:02:42,475 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_bender [2019-10-15 01:02:42,475 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_alloc_voice [2019-10-15 01:02:42,475 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_setup_voice [2019-10-15 01:02:42,476 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_init [2019-10-15 01:02:42,476 INFO L138 BoogieDeclarations]: Found implementation of procedure init_opl3 [2019-10-15 01:02:42,476 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup_opl3 [2019-10-15 01:02:42,476 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:02:42,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__copy_from_user_1 [2019-10-15 01:02:42,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__copy_to_user_2 [2019-10-15 01:02:42,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv___copy_user_nocache_3 [2019-10-15 01:02:42,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv___copy_user_nocache_4 [2019-10-15 01:02:42,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_copy_from_user_7 [2019-10-15 01:02:42,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2019-10-15 01:02:42,477 INFO L138 BoogieDeclarations]: Found implementation of procedure strlen [2019-10-15 01:02:42,477 INFO L138 BoogieDeclarations]: Found implementation of procedure strnlen [2019-10-15 01:02:42,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_len [2019-10-15 01:02:42,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_ret_val [2019-10-15 01:02:42,478 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2019-10-15 01:02:42,478 INFO L138 BoogieDeclarations]: Found implementation of procedure __copy_user_nocache [2019-10-15 01:02:42,478 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2019-10-15 01:02:42,478 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_region [2019-10-15 01:02:42,478 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2019-10-15 01:02:42,479 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2019-10-15 01:02:42,479 INFO L138 BoogieDeclarations]: Found implementation of procedure compute_finetune [2019-10-15 01:02:42,479 INFO L138 BoogieDeclarations]: Found implementation of procedure conf_printf2 [2019-10-15 01:02:42,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-10-15 01:02:42,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-10-15 01:02:42,480 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2019-10-15 01:02:42,480 INFO L138 BoogieDeclarations]: Found implementation of procedure note_to_freq [2019-10-15 01:02:42,480 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2019-10-15 01:02:42,480 INFO L138 BoogieDeclarations]: Found implementation of procedure sequencer_init [2019-10-15 01:02:42,480 INFO L138 BoogieDeclarations]: Found implementation of procedure sound_alloc_synthdev [2019-10-15 01:02:42,480 INFO L138 BoogieDeclarations]: Found implementation of procedure sound_unload_synthdev [2019-10-15 01:02:42,481 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_fmt [2019-10-15 01:02:42,481 INFO L138 BoogieDeclarations]: Found implementation of procedure external_alloc [2019-10-15 01:02:42,481 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2019-10-15 01:02:42,482 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2019-10-15 01:02:42,482 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2019-10-15 01:02:42,482 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2019-10-15 01:02:42,482 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2019-10-15 01:02:42,483 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:02:42,483 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2019-10-15 01:02:42,483 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2019-10-15 01:02:42,484 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_fmt [2019-10-15 01:02:42,484 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2019-10-15 01:02:42,484 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2019-10-15 01:02:42,485 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2019-10-15 01:02:42,485 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2019-10-15 01:02:42,485 INFO L130 BoogieDeclarations]: Found specification of procedure __request_region [2019-10-15 01:02:42,486 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2019-10-15 01:02:42,486 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2019-10-15 01:02:42,486 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_len [2019-10-15 01:02:42,486 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-10-15 01:02:42,486 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-10-15 01:02:42,486 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2019-10-15 01:02:42,486 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2019-10-15 01:02:42,487 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2019-10-15 01:02:42,487 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 01:02:42,487 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-15 01:02:42,487 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:02:42,487 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2019-10-15 01:02:42,487 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-10-15 01:02:42,487 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-15 01:02:42,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 01:02:42,488 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2019-10-15 01:02:42,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2019-10-15 01:02:42,488 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2019-10-15 01:02:42,488 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2019-10-15 01:02:42,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2019-10-15 01:02:42,488 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2019-10-15 01:02:42,489 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ptr [2019-10-15 01:02:42,489 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2019-10-15 01:02:42,489 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2019-10-15 01:02:42,489 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2019-10-15 01:02:42,490 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2019-10-15 01:02:42,490 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2019-10-15 01:02:42,490 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__copy_to_user_2 [2019-10-15 01:02:42,490 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2019-10-15 01:02:42,490 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__copy_from_user_1 [2019-10-15 01:02:42,491 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2019-10-15 01:02:42,491 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:02:42,491 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_copy_from_user_7 [2019-10-15 01:02:42,491 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2019-10-15 01:02:42,491 INFO L130 BoogieDeclarations]: Found specification of procedure __copy_user_nocache [2019-10-15 01:02:42,492 INFO L130 BoogieDeclarations]: Found specification of procedure ldv___copy_user_nocache_3 [2019-10-15 01:02:42,492 INFO L130 BoogieDeclarations]: Found specification of procedure ldv___copy_user_nocache_4 [2019-10-15 01:02:42,492 INFO L130 BoogieDeclarations]: Found specification of procedure sequencer_init [2019-10-15 01:02:42,493 INFO L130 BoogieDeclarations]: Found specification of procedure note_to_freq [2019-10-15 01:02:42,493 INFO L130 BoogieDeclarations]: Found specification of procedure compute_finetune [2019-10-15 01:02:42,493 INFO L130 BoogieDeclarations]: Found specification of procedure conf_printf2 [2019-10-15 01:02:42,493 INFO L130 BoogieDeclarations]: Found specification of procedure sound_unload_synthdev [2019-10-15 01:02:42,493 INFO L130 BoogieDeclarations]: Found specification of procedure sound_alloc_synthdev [2019-10-15 01:02:42,494 INFO L130 BoogieDeclarations]: Found specification of procedure store_instr [2019-10-15 01:02:42,494 INFO L130 BoogieDeclarations]: Found specification of procedure freq_to_fnum [2019-10-15 01:02:42,494 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_command [2019-10-15 01:02:42,494 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_kill_note [2019-10-15 01:02:42,494 INFO L130 BoogieDeclarations]: Found specification of procedure enter_4op_mode [2019-10-15 01:02:42,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:02:42,498 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:02:42,498 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 01:02:42,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:02:42,498 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_ioctl [2019-10-15 01:02:42,499 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_detect [2019-10-15 01:02:42,499 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2019-10-15 01:02:42,499 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2019-10-15 01:02:42,506 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_set_instr [2019-10-15 01:02:42,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 01:02:42,507 INFO L130 BoogieDeclarations]: Found specification of procedure calc_vol [2019-10-15 01:02:42,507 INFO L130 BoogieDeclarations]: Found specification of procedure set_voice_volume [2019-10-15 01:02:42,507 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_start_note [2019-10-15 01:02:42,507 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_reset [2019-10-15 01:02:42,507 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_open [2019-10-15 01:02:42,507 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_close [2019-10-15 01:02:42,507 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_hw_control [2019-10-15 01:02:42,508 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_load_patch [2019-10-15 01:02:42,508 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_panning [2019-10-15 01:02:42,508 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_volume_method [2019-10-15 01:02:42,508 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_aftertouch [2019-10-15 01:02:42,508 INFO L130 BoogieDeclarations]: Found specification of procedure bend_pitch [2019-10-15 01:02:42,508 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_controller [2019-10-15 01:02:42,508 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_bender [2019-10-15 01:02:42,509 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_alloc_voice [2019-10-15 01:02:42,509 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_setup_voice [2019-10-15 01:02:42,509 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_init [2019-10-15 01:02:42,509 INFO L130 BoogieDeclarations]: Found specification of procedure init_opl3 [2019-10-15 01:02:42,509 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup_opl3 [2019-10-15 01:02:42,509 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-10-15 01:02:42,509 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-10-15 01:02:42,509 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:02:42,510 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2019-10-15 01:02:42,510 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2019-10-15 01:02:42,510 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2019-10-15 01:02:42,510 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_ret_val [2019-10-15 01:02:42,510 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2019-10-15 01:02:42,510 INFO L130 BoogieDeclarations]: Found specification of procedure external_alloc [2019-10-15 01:02:42,510 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 01:02:42,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:02:42,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 01:02:42,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-15 01:02:42,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:02:42,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2019-10-15 01:02:42,511 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2019-10-15 01:02:42,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2019-10-15 01:02:42,511 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2019-10-15 01:02:43,618 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2019-10-15 01:02:49,244 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:02:49,244 INFO L284 CfgBuilder]: Removed 2 assume(true) statements. [2019-10-15 01:02:49,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:02:49 BoogieIcfgContainer [2019-10-15 01:02:49,246 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:02:49,248 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:02:49,249 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:02:49,252 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:02:49,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:02:40" (1/3) ... [2019-10-15 01:02:49,253 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@683a1e27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:02:49, skipping insertion in model container [2019-10-15 01:02:49,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:02:42" (2/3) ... [2019-10-15 01:02:49,254 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@683a1e27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:02:49, skipping insertion in model container [2019-10-15 01:02:49,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:02:49" (3/3) ... [2019-10-15 01:02:49,256 INFO L109 eAbstractionObserver]: Analyzing ICFG linux-stable-42f9f8d-1-111_1a-sound--oss--opl3.ko-entry_point_ldv-val-v0.8.cil.out.i [2019-10-15 01:02:49,269 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:02:49,281 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:02:49,297 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:02:49,331 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:02:49,332 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:02:49,332 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:02:49,332 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:02:49,332 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:02:49,332 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:02:49,332 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:02:49,332 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:02:49,374 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states. [2019-10-15 01:02:49,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 498 [2019-10-15 01:02:49,398 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:02:49,399 INFO L380 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 39, 39, 39, 39, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:02:49,401 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:02:49,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:02:49,407 INFO L82 PathProgramCache]: Analyzing trace with hash -1640497616, now seen corresponding path program 1 times [2019-10-15 01:02:49,417 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:02:49,417 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803546541] [2019-10-15 01:02:49,418 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:02:49,418 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:02:49,418 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:02:50,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:02:51,042 INFO L134 CoverageAnalysis]: Checked inductivity of 6717 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6717 trivial. 0 not checked. [2019-10-15 01:02:51,042 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803546541] [2019-10-15 01:02:51,043 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:02:51,044 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:02:51,044 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612590544] [2019-10-15 01:02:51,050 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:02:51,052 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:02:51,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:02:51,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:02:51,069 INFO L87 Difference]: Start difference. First operand 926 states. Second operand 3 states. [2019-10-15 01:02:51,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:02:51,567 INFO L93 Difference]: Finished difference Result 1923 states and 2766 transitions. [2019-10-15 01:02:51,568 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:02:51,569 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 497 [2019-10-15 01:02:51,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:02:51,598 INFO L225 Difference]: With dead ends: 1923 [2019-10-15 01:02:51,599 INFO L226 Difference]: Without dead ends: 1066 [2019-10-15 01:02:51,610 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:02:51,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2019-10-15 01:02:51,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2019-10-15 01:02:51,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1066 states. [2019-10-15 01:02:51,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1506 transitions. [2019-10-15 01:02:51,813 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1506 transitions. Word has length 497 [2019-10-15 01:02:51,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:02:51,815 INFO L462 AbstractCegarLoop]: Abstraction has 1066 states and 1506 transitions. [2019-10-15 01:02:51,815 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:02:51,816 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1506 transitions. [2019-10-15 01:02:51,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 514 [2019-10-15 01:02:51,827 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:02:51,828 INFO L380 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 39, 39, 39, 39, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:02:51,828 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:02:51,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:02:51,829 INFO L82 PathProgramCache]: Analyzing trace with hash 1165895321, now seen corresponding path program 1 times [2019-10-15 01:02:51,829 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:02:51,829 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767603503] [2019-10-15 01:02:51,830 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:02:51,830 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:02:51,830 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:02:52,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:02:52,854 INFO L134 CoverageAnalysis]: Checked inductivity of 6719 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6717 trivial. 0 not checked. [2019-10-15 01:02:52,855 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767603503] [2019-10-15 01:02:52,855 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:02:52,855 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:02:52,856 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122281488] [2019-10-15 01:02:52,858 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:02:52,858 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:02:52,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:02:52,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:02:52,859 INFO L87 Difference]: Start difference. First operand 1066 states and 1506 transitions. Second operand 4 states. [2019-10-15 01:02:54,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:02:54,097 INFO L93 Difference]: Finished difference Result 2020 states and 2860 transitions. [2019-10-15 01:02:54,098 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:02:54,099 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 513 [2019-10-15 01:02:54,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:02:54,117 INFO L225 Difference]: With dead ends: 2020 [2019-10-15 01:02:54,121 INFO L226 Difference]: Without dead ends: 1066 [2019-10-15 01:02:54,128 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:02:54,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2019-10-15 01:02:54,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2019-10-15 01:02:54,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1066 states. [2019-10-15 01:02:54,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1504 transitions. [2019-10-15 01:02:54,232 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1504 transitions. Word has length 513 [2019-10-15 01:02:54,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:02:54,237 INFO L462 AbstractCegarLoop]: Abstraction has 1066 states and 1504 transitions. [2019-10-15 01:02:54,237 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:02:54,237 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1504 transitions. [2019-10-15 01:02:54,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 520 [2019-10-15 01:02:54,253 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:02:54,253 INFO L380 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 39, 39, 39, 39, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:02:54,253 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:02:54,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:02:54,254 INFO L82 PathProgramCache]: Analyzing trace with hash -1940607939, now seen corresponding path program 1 times [2019-10-15 01:02:54,254 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:02:54,254 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038264114] [2019-10-15 01:02:54,255 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:02:54,255 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:02:54,255 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:02:54,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:02:55,870 INFO L134 CoverageAnalysis]: Checked inductivity of 6719 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6717 trivial. 0 not checked. [2019-10-15 01:02:55,871 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038264114] [2019-10-15 01:02:55,871 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:02:55,871 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 01:02:55,872 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700971057] [2019-10-15 01:02:55,874 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:02:55,874 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:02:55,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:02:55,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:02:55,875 INFO L87 Difference]: Start difference. First operand 1066 states and 1504 transitions. Second operand 5 states. [2019-10-15 01:02:56,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:02:56,259 INFO L93 Difference]: Finished difference Result 2030 states and 2866 transitions. [2019-10-15 01:02:56,260 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:02:56,260 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 519 [2019-10-15 01:02:56,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:02:56,273 INFO L225 Difference]: With dead ends: 2030 [2019-10-15 01:02:56,274 INFO L226 Difference]: Without dead ends: 1066 [2019-10-15 01:02:56,282 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:02:56,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2019-10-15 01:02:56,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2019-10-15 01:02:56,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1066 states. [2019-10-15 01:02:56,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1502 transitions. [2019-10-15 01:02:56,345 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1502 transitions. Word has length 519 [2019-10-15 01:02:56,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:02:56,348 INFO L462 AbstractCegarLoop]: Abstraction has 1066 states and 1502 transitions. [2019-10-15 01:02:56,348 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:02:56,349 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1502 transitions. [2019-10-15 01:02:56,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2019-10-15 01:02:56,362 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:02:56,363 INFO L380 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 39, 39, 39, 39, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:02:56,363 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:02:56,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:02:56,363 INFO L82 PathProgramCache]: Analyzing trace with hash 234558283, now seen corresponding path program 1 times [2019-10-15 01:02:56,364 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:02:56,364 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619423832] [2019-10-15 01:02:56,364 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:02:56,364 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:02:56,365 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:02:56,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:02:57,269 INFO L134 CoverageAnalysis]: Checked inductivity of 6719 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6717 trivial. 0 not checked. [2019-10-15 01:02:57,272 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619423832] [2019-10-15 01:02:57,274 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:02:57,274 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 01:02:57,275 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462542906] [2019-10-15 01:02:57,276 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:02:57,281 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:02:57,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:02:57,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:02:57,282 INFO L87 Difference]: Start difference. First operand 1066 states and 1502 transitions. Second operand 5 states. [2019-10-15 01:02:57,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:02:57,381 INFO L93 Difference]: Finished difference Result 2028 states and 2860 transitions. [2019-10-15 01:02:57,381 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:02:57,382 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 526 [2019-10-15 01:02:57,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:02:57,395 INFO L225 Difference]: With dead ends: 2028 [2019-10-15 01:02:57,395 INFO L226 Difference]: Without dead ends: 1054 [2019-10-15 01:02:57,410 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:02:57,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1054 states. [2019-10-15 01:02:57,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1054 to 1054. [2019-10-15 01:02:57,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1054 states. [2019-10-15 01:02:57,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1054 states to 1054 states and 1480 transitions. [2019-10-15 01:02:57,496 INFO L78 Accepts]: Start accepts. Automaton has 1054 states and 1480 transitions. Word has length 526 [2019-10-15 01:02:57,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:02:57,497 INFO L462 AbstractCegarLoop]: Abstraction has 1054 states and 1480 transitions. [2019-10-15 01:02:57,497 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:02:57,498 INFO L276 IsEmpty]: Start isEmpty. Operand 1054 states and 1480 transitions. [2019-10-15 01:02:57,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 667 [2019-10-15 01:02:57,505 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:02:57,506 INFO L380 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 39, 39, 39, 39, 8, 8, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:02:57,506 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:02:57,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:02:57,507 INFO L82 PathProgramCache]: Analyzing trace with hash 2013024119, now seen corresponding path program 1 times [2019-10-15 01:02:57,507 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:02:57,507 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549872559] [2019-10-15 01:02:57,508 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:02:57,508 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:02:57,508 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:02:57,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:02:58,623 INFO L134 CoverageAnalysis]: Checked inductivity of 6908 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 6891 trivial. 0 not checked. [2019-10-15 01:02:58,624 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549872559] [2019-10-15 01:02:58,624 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919671923] [2019-10-15 01:02:58,624 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:03:00,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:03:00,141 INFO L256 TraceCheckSpWp]: Trace formula consists of 9112 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-15 01:03:00,175 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:03:00,537 INFO L134 CoverageAnalysis]: Checked inductivity of 6908 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 6873 trivial. 0 not checked. [2019-10-15 01:03:00,537 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:03:01,400 INFO L134 CoverageAnalysis]: Checked inductivity of 6908 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 6891 trivial. 0 not checked. [2019-10-15 01:03:01,400 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:03:01,401 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2019-10-15 01:03:01,401 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964998412] [2019-10-15 01:03:01,402 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:03:01,402 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:03:01,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:03:01,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:03:01,403 INFO L87 Difference]: Start difference. First operand 1054 states and 1480 transitions. Second operand 3 states. [2019-10-15 01:03:01,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:03:01,478 INFO L93 Difference]: Finished difference Result 2008 states and 2927 transitions. [2019-10-15 01:03:01,478 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:03:01,478 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 666 [2019-10-15 01:03:01,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:03:01,488 INFO L225 Difference]: With dead ends: 2008 [2019-10-15 01:03:01,488 INFO L226 Difference]: Without dead ends: 1066 [2019-10-15 01:03:01,496 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 1334 GetRequests, 1331 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:03:01,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2019-10-15 01:03:01,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1058. [2019-10-15 01:03:01,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1058 states. [2019-10-15 01:03:01,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1058 states to 1058 states and 1484 transitions. [2019-10-15 01:03:01,550 INFO L78 Accepts]: Start accepts. Automaton has 1058 states and 1484 transitions. Word has length 666 [2019-10-15 01:03:01,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:03:01,551 INFO L462 AbstractCegarLoop]: Abstraction has 1058 states and 1484 transitions. [2019-10-15 01:03:01,552 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:03:01,552 INFO L276 IsEmpty]: Start isEmpty. Operand 1058 states and 1484 transitions. [2019-10-15 01:03:01,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 673 [2019-10-15 01:03:01,558 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:03:01,559 INFO L380 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 39, 39, 39, 39, 8, 8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:03:01,774 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:03:01,774 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:03:01,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:03:01,775 INFO L82 PathProgramCache]: Analyzing trace with hash -392913981, now seen corresponding path program 1 times [2019-10-15 01:03:01,775 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:03:01,775 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242003131] [2019-10-15 01:03:01,775 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:03:01,776 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:03:01,776 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:03:01,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:03:02,743 INFO L134 CoverageAnalysis]: Checked inductivity of 6953 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6951 trivial. 0 not checked. [2019-10-15 01:03:02,744 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242003131] [2019-10-15 01:03:02,744 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:03:02,744 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:03:02,744 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969757541] [2019-10-15 01:03:02,746 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:03:02,746 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:03:02,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:03:02,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:03:02,747 INFO L87 Difference]: Start difference. First operand 1058 states and 1484 transitions. Second operand 3 states. [2019-10-15 01:03:02,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:03:02,802 INFO L93 Difference]: Finished difference Result 2010 states and 2828 transitions. [2019-10-15 01:03:02,802 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:03:02,802 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 672 [2019-10-15 01:03:02,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:03:02,812 INFO L225 Difference]: With dead ends: 2010 [2019-10-15 01:03:02,813 INFO L226 Difference]: Without dead ends: 1064 [2019-10-15 01:03:02,818 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:03:02,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1064 states. [2019-10-15 01:03:02,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1064 to 1060. [2019-10-15 01:03:02,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1060 states. [2019-10-15 01:03:02,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1060 states to 1060 states and 1486 transitions. [2019-10-15 01:03:02,871 INFO L78 Accepts]: Start accepts. Automaton has 1060 states and 1486 transitions. Word has length 672 [2019-10-15 01:03:02,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:03:02,872 INFO L462 AbstractCegarLoop]: Abstraction has 1060 states and 1486 transitions. [2019-10-15 01:03:02,872 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:03:02,872 INFO L276 IsEmpty]: Start isEmpty. Operand 1060 states and 1486 transitions. [2019-10-15 01:03:02,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 699 [2019-10-15 01:03:02,879 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:03:02,880 INFO L380 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 39, 39, 39, 39, 10, 10, 10, 10, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:03:02,880 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:03:02,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:03:02,881 INFO L82 PathProgramCache]: Analyzing trace with hash -1063783127, now seen corresponding path program 1 times [2019-10-15 01:03:02,881 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:03:02,881 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596822725] [2019-10-15 01:03:02,881 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:03:02,881 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:03:02,882 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:03:03,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:03:03,780 INFO L134 CoverageAnalysis]: Checked inductivity of 7100 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7098 trivial. 0 not checked. [2019-10-15 01:03:03,781 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596822725] [2019-10-15 01:03:03,781 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:03:03,782 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:03:03,782 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437635963] [2019-10-15 01:03:03,784 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:03:03,784 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:03:03,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:03:03,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:03:03,785 INFO L87 Difference]: Start difference. First operand 1060 states and 1486 transitions. Second operand 4 states. [2019-10-15 01:03:06,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:03:06,286 INFO L93 Difference]: Finished difference Result 1893 states and 2671 transitions. [2019-10-15 01:03:06,287 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:03:06,287 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 698 [2019-10-15 01:03:06,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:03:06,297 INFO L225 Difference]: With dead ends: 1893 [2019-10-15 01:03:06,298 INFO L226 Difference]: Without dead ends: 919 [2019-10-15 01:03:06,304 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:03:06,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 919 states. [2019-10-15 01:03:06,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 919 to 919. [2019-10-15 01:03:06,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 919 states. [2019-10-15 01:03:06,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 919 states to 919 states and 1297 transitions. [2019-10-15 01:03:06,365 INFO L78 Accepts]: Start accepts. Automaton has 919 states and 1297 transitions. Word has length 698 [2019-10-15 01:03:06,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:03:06,366 INFO L462 AbstractCegarLoop]: Abstraction has 919 states and 1297 transitions. [2019-10-15 01:03:06,366 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:03:06,367 INFO L276 IsEmpty]: Start isEmpty. Operand 919 states and 1297 transitions. [2019-10-15 01:03:06,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 705 [2019-10-15 01:03:06,375 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:03:06,376 INFO L380 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 39, 39, 39, 39, 10, 10, 10, 10, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:03:06,376 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:03:06,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:03:06,377 INFO L82 PathProgramCache]: Analyzing trace with hash 1959652205, now seen corresponding path program 1 times [2019-10-15 01:03:06,377 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:03:06,378 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108671461] [2019-10-15 01:03:06,378 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:03:06,378 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:03:06,379 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:03:06,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:03:07,600 INFO L134 CoverageAnalysis]: Checked inductivity of 7100 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7098 trivial. 0 not checked. [2019-10-15 01:03:07,601 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108671461] [2019-10-15 01:03:07,601 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:03:07,601 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-10-15 01:03:07,601 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931205774] [2019-10-15 01:03:07,605 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-15 01:03:07,606 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:03:07,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-15 01:03:07,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2019-10-15 01:03:07,607 INFO L87 Difference]: Start difference. First operand 919 states and 1297 transitions. Second operand 11 states. [2019-10-15 01:03:08,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:03:08,604 INFO L93 Difference]: Finished difference Result 1698 states and 2405 transitions. [2019-10-15 01:03:08,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-15 01:03:08,605 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 704 [2019-10-15 01:03:08,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:03:08,613 INFO L225 Difference]: With dead ends: 1698 [2019-10-15 01:03:08,613 INFO L226 Difference]: Without dead ends: 919 [2019-10-15 01:03:08,618 INFO L600 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 [2019-10-15 01:03:08,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 919 states. [2019-10-15 01:03:08,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 919 to 919. [2019-10-15 01:03:08,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 919 states. [2019-10-15 01:03:08,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 919 states to 919 states and 1296 transitions. [2019-10-15 01:03:08,663 INFO L78 Accepts]: Start accepts. Automaton has 919 states and 1296 transitions. Word has length 704 [2019-10-15 01:03:08,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:03:08,664 INFO L462 AbstractCegarLoop]: Abstraction has 919 states and 1296 transitions. [2019-10-15 01:03:08,665 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-15 01:03:08,665 INFO L276 IsEmpty]: Start isEmpty. Operand 919 states and 1296 transitions. [2019-10-15 01:03:08,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 705 [2019-10-15 01:03:08,671 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:03:08,672 INFO L380 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 39, 39, 39, 39, 10, 10, 10, 10, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:03:08,672 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:03:08,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:03:08,673 INFO L82 PathProgramCache]: Analyzing trace with hash 1391679982, now seen corresponding path program 1 times [2019-10-15 01:03:08,673 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:03:08,673 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69299923] [2019-10-15 01:03:08,674 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:03:08,674 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:03:08,674 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:03:09,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat