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-c0cc359-1-104_1a-drivers--usb--serial--qcserial.ko-entry_point_ldv-val-v0.8.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:10:28,023 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:10:28,026 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:10:28,040 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:10:28,040 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:10:28,041 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:10:28,043 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:10:28,045 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:10:28,046 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:10:28,047 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:10:28,048 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:10:28,049 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:10:28,050 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:10:28,051 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:10:28,052 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:10:28,053 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:10:28,054 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:10:28,055 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:10:28,056 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:10:28,058 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:10:28,060 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:10:28,061 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:10:28,062 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:10:28,063 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:10:28,066 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:10:28,066 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:10:28,066 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:10:28,067 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:10:28,067 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:10:28,068 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:10:28,069 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:10:28,069 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:10:28,070 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:10:28,071 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:10:28,072 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:10:28,072 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:10:28,073 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:10:28,073 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:10:28,073 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:10:28,074 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:10:28,075 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:10:28,076 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 [2019-10-14 23:10:28,090 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:10:28,090 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:10:28,091 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:10:28,092 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:10:28,092 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:10:28,092 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:10:28,092 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:10:28,092 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:10:28,093 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:10:28,093 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:10:28,093 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:10:28,093 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:10:28,093 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:10:28,094 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:10:28,094 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:10:28,094 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:10:28,094 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:10:28,094 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:10:28,095 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:10:28,095 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:10:28,095 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:10:28,095 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:10:28,095 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:10:28,096 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:10:28,096 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:10:28,096 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:10:28,096 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:10:28,096 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:10:28,097 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:10:28,391 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:10:28,403 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:10:28,406 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:10:28,408 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:10:28,408 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:10:28,409 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-validator-v0.8/linux-stable-c0cc359-1-104_1a-drivers--usb--serial--qcserial.ko-entry_point_ldv-val-v0.8.cil.out.i [2019-10-14 23:10:28,477 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69554cb64/2b686411c7d043a59f7e91a0f8df96db/FLAGaccd54235 [2019-10-14 23:10:29,199 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:10:29,199 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-validator-v0.8/linux-stable-c0cc359-1-104_1a-drivers--usb--serial--qcserial.ko-entry_point_ldv-val-v0.8.cil.out.i [2019-10-14 23:10:29,233 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69554cb64/2b686411c7d043a59f7e91a0f8df96db/FLAGaccd54235 [2019-10-14 23:10:29,349 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69554cb64/2b686411c7d043a59f7e91a0f8df96db [2019-10-14 23:10:29,358 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:10:29,360 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:10:29,361 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:10:29,361 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:10:29,364 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:10:29,364 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:10:29" (1/1) ... [2019-10-14 23:10:29,367 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31d8d832 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:10:29, skipping insertion in model container [2019-10-14 23:10:29,367 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:10:29" (1/1) ... [2019-10-14 23:10:29,375 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:10:29,480 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:10:30,677 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:10:30,789 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:10:31,083 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:10:31,209 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:10:31,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:10:31 WrapperNode [2019-10-14 23:10:31,210 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:10:31,211 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:10:31,212 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:10:31,212 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:10:31,228 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:10:31" (1/1) ... [2019-10-14 23:10:31,229 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:10:31" (1/1) ... [2019-10-14 23:10:31,293 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:10:31" (1/1) ... [2019-10-14 23:10:31,293 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:10:31" (1/1) ... [2019-10-14 23:10:31,381 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:10:31" (1/1) ... [2019-10-14 23:10:31,405 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:10:31" (1/1) ... [2019-10-14 23:10:31,421 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:10:31" (1/1) ... [2019-10-14 23:10:31,445 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:10:31,446 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:10:31,446 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:10:31,446 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:10:31,447 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:10:31" (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 [2019-10-14 23:10:31,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:10:31,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:10:31,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-10-14 23:10:31,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2019-10-14 23:10:31,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2019-10-14 23:10:31,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2019-10-14 23:10:31,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2019-10-14 23:10:31,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ptr [2019-10-14 23:10:31,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2019-10-14 23:10:31,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2019-10-14 23:10:31,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int_negative [2019-10-14 23:10:31,518 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2019-10-14 23:10:31,518 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2019-10-14 23:10:31,518 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2019-10-14 23:10:31,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kzalloc_1 [2019-10-14 23:10:31,519 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_in [2019-10-14 23:10:31,522 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_out [2019-10-14 23:10:31,522 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2019-10-14 23:10:31,523 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_is_bulk_in [2019-10-14 23:10:31,523 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_is_bulk_out [2019-10-14 23:10:31,523 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register [2019-10-14 23:10:31,523 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_serial_data [2019-10-14 23:10:31,525 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_serial_data [2019-10-14 23:10:31,525 INFO L138 BoogieDeclarations]: Found implementation of procedure qcprobe [2019-10-14 23:10:31,525 INFO L138 BoogieDeclarations]: Found implementation of procedure qc_release [2019-10-14 23:10:31,525 INFO L138 BoogieDeclarations]: Found implementation of procedure qcinit [2019-10-14 23:10:31,525 INFO L138 BoogieDeclarations]: Found implementation of procedure qcexit [2019-10-14 23:10:31,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_usb_serial_driver_1 [2019-10-14 23:10:31,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_driver_2 [2019-10-14 23:10:31,526 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:10:31,526 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2019-10-14 23:10:31,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_register_driver_2 [2019-10-14 23:10:31,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_interface_3 [2019-10-14 23:10:31,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_4 [2019-10-14 23:10:31,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_interface_5 [2019-10-14 23:10:31,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_interface_6 [2019-10-14 23:10:31,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_7 [2019-10-14 23:10:31,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_interface_8 [2019-10-14 23:10:31,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_9 [2019-10-14 23:10:31,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_10 [2019-10-14 23:10:31,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_deregister_11 [2019-10-14 23:10:31,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2019-10-14 23:10:31,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc [2019-10-14 23:10:31,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2019-10-14 23:10:31,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-10-14 23:10:31,529 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2019-10-14 23:10:31,529 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2019-10-14 23:10:31,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-10-14 23:10:31,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_reset_resume_2 [2019-10-14 23:10:31,530 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2019-10-14 23:10:31,530 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister [2019-10-14 23:10:31,530 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_enable_autosuspend [2019-10-14 23:10:31,530 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2019-10-14 23:10:31,531 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_deregister [2019-10-14 23:10:31,531 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_disconnect [2019-10-14 23:10:31,531 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_probe [2019-10-14 23:10:31,531 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_register [2019-10-14 23:10:31,531 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_resume [2019-10-14 23:10:31,532 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_suspend [2019-10-14 23:10:31,532 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_interface [2019-10-14 23:10:31,532 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_chars_in_buffer [2019-10-14 23:10:31,532 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_close [2019-10-14 23:10:31,533 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_disconnect [2019-10-14 23:10:31,533 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_open [2019-10-14 23:10:31,533 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_release [2019-10-14 23:10:31,533 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_resume [2019-10-14 23:10:31,533 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_startup [2019-10-14 23:10:31,534 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_suspend [2019-10-14 23:10:31,534 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_write [2019-10-14 23:10:31,534 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_write_room [2019-10-14 23:10:31,534 INFO L138 BoogieDeclarations]: Found implementation of procedure external_alloc [2019-10-14 23:10:31,535 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2019-10-14 23:10:31,535 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2019-10-14 23:10:31,535 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2019-10-14 23:10:31,536 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:10:31,536 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2019-10-14 23:10:31,536 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-14 23:10:31,536 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-14 23:10:31,537 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2019-10-14 23:10:31,537 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:10:31,537 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2019-10-14 23:10:31,537 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-10-14 23:10:31,538 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-14 23:10:31,538 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-10-14 23:10:31,538 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-14 23:10:31,538 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2019-10-14 23:10:31,539 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2019-10-14 23:10:31,540 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2019-10-14 23:10:31,540 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2019-10-14 23:10:31,540 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2019-10-14 23:10:31,541 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2019-10-14 23:10:31,541 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ptr [2019-10-14 23:10:31,541 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2019-10-14 23:10:31,541 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2019-10-14 23:10:31,542 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int_negative [2019-10-14 23:10:31,542 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc [2019-10-14 23:10:31,542 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2019-10-14 23:10:31,542 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2019-10-14 23:10:31,542 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2019-10-14 23:10:31,542 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-10-14 23:10:31,543 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_4 [2019-10-14 23:10:31,583 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_7 [2019-10-14 23:10:31,584 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_9 [2019-10-14 23:10:31,584 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_10 [2019-10-14 23:10:31,584 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2019-10-14 23:10:31,584 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2019-10-14 23:10:31,585 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kzalloc_1 [2019-10-14 23:10:31,585 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2019-10-14 23:10:31,585 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_usb_serial_driver_1 [2019-10-14 23:10:31,585 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_driver_2 [2019-10-14 23:10:31,586 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2019-10-14 23:10:31,586 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_in [2019-10-14 23:10:31,587 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 23:10:31,587 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_out [2019-10-14 23:10:31,587 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2019-10-14 23:10:31,587 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_is_bulk_in [2019-10-14 23:10:31,587 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_is_bulk_out [2019-10-14 23:10:31,588 INFO L130 BoogieDeclarations]: Found specification of procedure usb_enable_autosuspend [2019-10-14 23:10:31,588 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2019-10-14 23:10:31,588 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_register_driver_2 [2019-10-14 23:10:31,588 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register [2019-10-14 23:10:31,588 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 23:10:31,588 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2019-10-14 23:10:31,588 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_deregister_11 [2019-10-14 23:10:31,589 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_interface [2019-10-14 23:10:31,589 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_interface_3 [2019-10-14 23:10:31,589 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_interface_5 [2019-10-14 23:10:31,589 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_interface_6 [2019-10-14 23:10:31,589 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_interface_8 [2019-10-14 23:10:31,590 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_serial_data [2019-10-14 23:10:31,590 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-14 23:10:31,590 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_serial_data [2019-10-14 23:10:31,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-14 23:10:31,591 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_register [2019-10-14 23:10:31,591 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_deregister [2019-10-14 23:10:31,591 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_probe [2019-10-14 23:10:31,591 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_disconnect [2019-10-14 23:10:31,591 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_suspend [2019-10-14 23:10:31,592 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_resume [2019-10-14 23:10:31,592 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_open [2019-10-14 23:10:31,594 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_close [2019-10-14 23:10:31,594 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_startup [2019-10-14 23:10:31,595 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_disconnect [2019-10-14 23:10:31,595 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_release [2019-10-14 23:10:31,595 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_write_room [2019-10-14 23:10:31,595 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_write [2019-10-14 23:10:31,595 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_chars_in_buffer [2019-10-14 23:10:31,595 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_suspend [2019-10-14 23:10:31,595 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_resume [2019-10-14 23:10:31,596 INFO L130 BoogieDeclarations]: Found specification of procedure qcprobe [2019-10-14 23:10:31,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 23:10:31,596 INFO L130 BoogieDeclarations]: Found specification of procedure qc_release [2019-10-14 23:10:31,596 INFO L130 BoogieDeclarations]: Found specification of procedure qcinit [2019-10-14 23:10:31,596 INFO L130 BoogieDeclarations]: Found specification of procedure qcexit [2019-10-14 23:10:31,596 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_reset_resume_2 [2019-10-14 23:10:31,596 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-10-14 23:10:31,597 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-10-14 23:10:31,597 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:10:31,597 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2019-10-14 23:10:31,597 INFO L130 BoogieDeclarations]: Found specification of procedure external_alloc [2019-10-14 23:10:31,598 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-14 23:10:31,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:10:31,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-14 23:10:31,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-14 23:10:31,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:10:31,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 23:10:32,550 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2019-10-14 23:10:33,915 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:10:33,915 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-14 23:10:33,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:10:33 BoogieIcfgContainer [2019-10-14 23:10:33,917 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:10:33,918 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:10:33,918 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:10:33,921 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:10:33,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:10:29" (1/3) ... [2019-10-14 23:10:33,922 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7afdeb3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:10:33, skipping insertion in model container [2019-10-14 23:10:33,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:10:31" (2/3) ... [2019-10-14 23:10:33,923 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7afdeb3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:10:33, skipping insertion in model container [2019-10-14 23:10:33,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:10:33" (3/3) ... [2019-10-14 23:10:33,925 INFO L109 eAbstractionObserver]: Analyzing ICFG linux-stable-c0cc359-1-104_1a-drivers--usb--serial--qcserial.ko-entry_point_ldv-val-v0.8.cil.out.i [2019-10-14 23:10:33,935 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:10:33,947 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:10:33,958 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:10:33,995 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:10:33,996 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:10:33,996 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:10:33,996 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:10:33,996 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:10:33,996 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:10:33,996 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:10:33,996 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:10:34,036 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states. [2019-10-14 23:10:34,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2019-10-14 23:10:34,065 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:10:34,067 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:10:34,069 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:10:34,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:10:34,075 INFO L82 PathProgramCache]: Analyzing trace with hash -555790158, now seen corresponding path program 1 times [2019-10-14 23:10:34,084 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:10:34,085 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734354674] [2019-10-14 23:10:34,085 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:10:34,085 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:10:34,086 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:10:34,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:10:35,611 WARN L191 SmtUtils]: Spent 783.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2019-10-14 23:10:35,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:10:35,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:10:35,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:10:35,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:10:35,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:10:35,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:10:35,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:10:35,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:10:35,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:10:35,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:10:35,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:10:35,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:10:35,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:10:35,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:10:35,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:10:35,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:10:36,023 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2019-10-14 23:10:36,023 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734354674] [2019-10-14 23:10:36,024 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:10:36,025 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 23:10:36,025 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626801296] [2019-10-14 23:10:36,030 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:10:36,031 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:10:36,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:10:36,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:10:36,048 INFO L87 Difference]: Start difference. First operand 536 states. Second operand 8 states. [2019-10-14 23:10:36,784 WARN L191 SmtUtils]: Spent 698.00 ms on a formula simplification that was a NOOP. DAG size: 319 [2019-10-14 23:10:37,776 WARN L191 SmtUtils]: Spent 638.00 ms on a formula simplification that was a NOOP. DAG size: 321 [2019-10-14 23:10:38,512 WARN L191 SmtUtils]: Spent 612.00 ms on a formula simplification that was a NOOP. DAG size: 312 [2019-10-14 23:10:47,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:10:47,859 INFO L93 Difference]: Finished difference Result 1071 states and 1400 transitions. [2019-10-14 23:10:47,859 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-14 23:10:47,861 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 95 [2019-10-14 23:10:47,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:10:47,894 INFO L225 Difference]: With dead ends: 1071 [2019-10-14 23:10:47,895 INFO L226 Difference]: Without dead ends: 1024 [2019-10-14 23:10:47,900 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2019-10-14 23:10:47,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1024 states. [2019-10-14 23:10:48,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1024 to 965. [2019-10-14 23:10:48,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 965 states. [2019-10-14 23:10:48,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 965 states to 965 states and 1257 transitions. [2019-10-14 23:10:48,172 INFO L78 Accepts]: Start accepts. Automaton has 965 states and 1257 transitions. Word has length 95 [2019-10-14 23:10:48,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:10:48,173 INFO L462 AbstractCegarLoop]: Abstraction has 965 states and 1257 transitions. [2019-10-14 23:10:48,173 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:10:48,174 INFO L276 IsEmpty]: Start isEmpty. Operand 965 states and 1257 transitions. [2019-10-14 23:10:48,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2019-10-14 23:10:48,183 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:10:48,184 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2019-10-14 23:10:48,184 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:10:48,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:10:48,185 INFO L82 PathProgramCache]: Analyzing trace with hash 1045989093, now seen corresponding path program 1 times [2019-10-14 23:10:48,185 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:10:48,185 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917660771] [2019-10-14 23:10:48,186 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:10:48,186 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:10:48,186 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:10:48,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:10:49,036 WARN L191 SmtUtils]: Spent 644.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2019-10-14 23:10:49,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:10:49,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:10:49,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:10:49,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:10:49,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:10:49,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:10:49,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:10:49,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:10:49,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:10:49,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:10:49,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:10:49,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:10:49,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:10:49,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:10:49,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:10:49,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:10:49,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:10:49,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:10:49,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:10:49,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:10:49,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:10:49,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:10:49,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:10:49,422 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2019-10-14 23:10:49,422 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917660771] [2019-10-14 23:10:49,423 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:10:49,423 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-14 23:10:49,423 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147969671] [2019-10-14 23:10:49,425 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-14 23:10:49,425 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:10:49,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-14 23:10:49,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:10:49,426 INFO L87 Difference]: Start difference. First operand 965 states and 1257 transitions. Second operand 12 states. [2019-10-14 23:10:50,037 WARN L191 SmtUtils]: Spent 594.00 ms on a formula simplification that was a NOOP. DAG size: 319 [2019-10-14 23:10:51,232 WARN L191 SmtUtils]: Spent 653.00 ms on a formula simplification that was a NOOP. DAG size: 321 [2019-10-14 23:10:51,915 WARN L191 SmtUtils]: Spent 593.00 ms on a formula simplification that was a NOOP. DAG size: 312 [2019-10-14 23:10:57,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:10:57,751 INFO L93 Difference]: Finished difference Result 2235 states and 2912 transitions. [2019-10-14 23:10:57,754 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-14 23:10:57,754 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 138 [2019-10-14 23:10:57,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:10:57,768 INFO L225 Difference]: With dead ends: 2235 [2019-10-14 23:10:57,768 INFO L226 Difference]: Without dead ends: 1300 [2019-10-14 23:10:57,775 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2019-10-14 23:10:57,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1300 states. [2019-10-14 23:10:57,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1300 to 1232. [2019-10-14 23:10:57,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1232 states. [2019-10-14 23:10:57,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1232 states to 1232 states and 1611 transitions. [2019-10-14 23:10:57,969 INFO L78 Accepts]: Start accepts. Automaton has 1232 states and 1611 transitions. Word has length 138 [2019-10-14 23:10:57,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:10:57,970 INFO L462 AbstractCegarLoop]: Abstraction has 1232 states and 1611 transitions. [2019-10-14 23:10:57,970 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-14 23:10:57,970 INFO L276 IsEmpty]: Start isEmpty. Operand 1232 states and 1611 transitions. [2019-10-14 23:10:57,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2019-10-14 23:10:57,976 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:10:57,976 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-14 23:10:57,977 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:10:57,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:10:57,977 INFO L82 PathProgramCache]: Analyzing trace with hash 411451740, now seen corresponding path program 1 times [2019-10-14 23:10:57,977 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:10:57,978 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169800965] [2019-10-14 23:10:57,978 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:10:57,978 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:10:57,978 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:10:58,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:10:58,798 WARN L191 SmtUtils]: Spent 639.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2019-10-14 23:10:58,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:10:58,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:10:58,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:10:58,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:10:58,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:10:58,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:10:58,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:10:58,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:10:58,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:10:58,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:10:58,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:10:58,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:10:58,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:10:59,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:10:59,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:10:59,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:10:59,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:10:59,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:10:59,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:10:59,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:10:59,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:10:59,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:10:59,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:10:59,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:10:59,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:10:59,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:10:59,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:10:59,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:10:59,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:10:59,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:10:59,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:10:59,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:10:59,484 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2019-10-14 23:10:59,485 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169800965] [2019-10-14 23:10:59,485 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297822316] [2019-10-14 23:10:59,485 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 [2019-10-14 23:11:00,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:11:00,100 INFO L256 TraceCheckSpWp]: Trace formula consists of 3502 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:11:00,120 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:11:00,203 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2019-10-14 23:11:00,204 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:11:00,204 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [15] total 16 [2019-10-14 23:11:00,204 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99469513] [2019-10-14 23:11:00,205 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 23:11:00,205 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:11:00,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 23:11:00,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2019-10-14 23:11:00,206 INFO L87 Difference]: Start difference. First operand 1232 states and 1611 transitions. Second operand 3 states. [2019-10-14 23:11:00,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:11:00,461 INFO L93 Difference]: Finished difference Result 2434 states and 3192 transitions. [2019-10-14 23:11:00,462 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:11:00,462 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 192 [2019-10-14 23:11:00,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:11:00,474 INFO L225 Difference]: With dead ends: 2434 [2019-10-14 23:11:00,474 INFO L226 Difference]: Without dead ends: 1232 [2019-10-14 23:11:00,479 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 246 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2019-10-14 23:11:00,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1232 states. [2019-10-14 23:11:00,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1232 to 1232. [2019-10-14 23:11:00,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1232 states. [2019-10-14 23:11:00,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1232 states to 1232 states and 1591 transitions. [2019-10-14 23:11:00,731 INFO L78 Accepts]: Start accepts. Automaton has 1232 states and 1591 transitions. Word has length 192 [2019-10-14 23:11:00,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:11:00,732 INFO L462 AbstractCegarLoop]: Abstraction has 1232 states and 1591 transitions. [2019-10-14 23:11:00,732 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 23:11:00,732 INFO L276 IsEmpty]: Start isEmpty. Operand 1232 states and 1591 transitions. [2019-10-14 23:11:00,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2019-10-14 23:11:00,737 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:11:00,738 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-14 23:11:00,947 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:11:00,947 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:11:00,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:11:00,948 INFO L82 PathProgramCache]: Analyzing trace with hash 58363358, now seen corresponding path program 1 times [2019-10-14 23:11:00,948 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:11:00,949 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204121335] [2019-10-14 23:11:00,949 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:11:00,949 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:11:00,950 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:11:01,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:11:01,821 WARN L191 SmtUtils]: Spent 652.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2019-10-14 23:11:01,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:11:01,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:11:01,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:11:01,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:11:01,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:11:01,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:11:01,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:11:01,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:11:01,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:11:01,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:11:01,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:11:01,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:11:01,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:11:01,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:11:02,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:11:02,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:11:02,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:11:02,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:11:02,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:11:02,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:11:02,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:11:02,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:11:02,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:11:02,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:11:02,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:11:02,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:11:02,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:11:02,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:11:02,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:11:02,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:11:02,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:11:02,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:11:02,430 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2019-10-14 23:11:02,430 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204121335] [2019-10-14 23:11:02,430 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336177122] [2019-10-14 23:11:02,431 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:11:03,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:11:03,164 INFO L256 TraceCheckSpWp]: Trace formula consists of 3503 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-14 23:11:03,173 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:11:03,259 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2019-10-14 23:11:03,259 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:11:03,260 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [15] total 16 [2019-10-14 23:11:03,260 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142433798] [2019-10-14 23:11:03,261 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 23:11:03,261 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:11:03,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 23:11:03,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2019-10-14 23:11:03,262 INFO L87 Difference]: Start difference. First operand 1232 states and 1591 transitions. Second operand 3 states. [2019-10-14 23:11:03,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:11:03,689 INFO L93 Difference]: Finished difference Result 2349 states and 3067 transitions. [2019-10-14 23:11:03,689 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:11:03,690 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 192 [2019-10-14 23:11:03,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:11:03,699 INFO L225 Difference]: With dead ends: 2349 [2019-10-14 23:11:03,700 INFO L226 Difference]: Without dead ends: 1089 [2019-10-14 23:11:03,705 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 246 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2019-10-14 23:11:03,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1089 states. [2019-10-14 23:11:03,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1089 to 1073. [2019-10-14 23:11:03,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1073 states. [2019-10-14 23:11:03,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1073 states to 1073 states and 1408 transitions. [2019-10-14 23:11:03,978 INFO L78 Accepts]: Start accepts. Automaton has 1073 states and 1408 transitions. Word has length 192 [2019-10-14 23:11:03,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:11:03,980 INFO L462 AbstractCegarLoop]: Abstraction has 1073 states and 1408 transitions. [2019-10-14 23:11:03,980 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 23:11:03,980 INFO L276 IsEmpty]: Start isEmpty. Operand 1073 states and 1408 transitions. [2019-10-14 23:11:03,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2019-10-14 23:11:03,987 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:11:03,987 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2019-10-14 23:11:04,198 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:11:04,198 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:11:04,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:11:04,199 INFO L82 PathProgramCache]: Analyzing trace with hash -711252692, now seen corresponding path program 1 times [2019-10-14 23:11:04,199 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:11:04,200 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560425351] [2019-10-14 23:11:04,200 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:11:04,200 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:11:04,200 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:11:04,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat