/usr/bin/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-fb55353 [2019-11-06 21:14:10,151 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 21:14:10,153 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 21:14:10,167 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 21:14:10,167 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 21:14:10,169 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 21:14:10,170 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 21:14:10,180 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 21:14:10,182 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 21:14:10,183 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 21:14:10,186 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 21:14:10,188 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 21:14:10,188 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 21:14:10,191 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 21:14:10,192 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 21:14:10,193 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 21:14:10,194 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 21:14:10,197 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 21:14:10,198 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 21:14:10,205 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 21:14:10,208 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 21:14:10,211 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 21:14:10,213 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 21:14:10,214 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 21:14:10,216 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-06 21:14:10,216 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-06 21:14:10,216 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-06 21:14:10,218 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-06 21:14:10,218 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-06 21:14:10,221 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-06 21:14:10,221 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 21:14:10,222 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 21:14:10,223 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 21:14:10,224 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 21:14:10,226 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 21:14:10,226 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 21:14:10,226 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 21:14:10,227 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 21:14:10,227 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 21:14:10,230 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 21:14:10,231 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 21:14:10,231 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 [2019-11-06 21:14:10,266 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 21:14:10,266 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 21:14:10,270 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 21:14:10,270 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 21:14:10,270 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 21:14:10,270 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 21:14:10,271 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 21:14:10,271 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 21:14:10,271 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 21:14:10,271 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 21:14:10,271 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 21:14:10,271 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 21:14:10,274 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 21:14:10,274 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 21:14:10,275 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 21:14:10,275 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 21:14:10,275 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 21:14:10,275 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 21:14:10,275 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 21:14:10,276 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 21:14:10,276 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 21:14:10,276 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 21:14:10,276 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 21:14:10,276 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 21:14:10,277 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 21:14:10,277 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 21:14:10,277 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 21:14:10,278 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 21:14:10,278 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 21:14:10,548 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 21:14:10,561 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 21:14:10,564 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 21:14:10,566 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 21:14:10,566 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 21:14:10,567 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-validator-v0.8/linux-stable-c0cc359-1-104_1a-drivers--usb--serial--qcserial.ko-entry_point_ldv-val-v0.8.cil.out.i [2019-11-06 21:14:10,627 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/976447826/9321e30928b44464be07b7c8b983ba86/FLAG0c6b09fe2 [2019-11-06 21:14:11,358 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 21:14:11,358 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-validator-v0.8/linux-stable-c0cc359-1-104_1a-drivers--usb--serial--qcserial.ko-entry_point_ldv-val-v0.8.cil.out.i [2019-11-06 21:14:11,395 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/976447826/9321e30928b44464be07b7c8b983ba86/FLAG0c6b09fe2 [2019-11-06 21:14:11,443 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/976447826/9321e30928b44464be07b7c8b983ba86 [2019-11-06 21:14:11,455 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 21:14:11,457 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 21:14:11,460 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 21:14:11,460 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 21:14:11,463 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 21:14:11,464 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:14:11" (1/1) ... [2019-11-06 21:14:11,468 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@be7f586 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:11, skipping insertion in model container [2019-11-06 21:14:11,468 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:14:11" (1/1) ... [2019-11-06 21:14:11,478 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 21:14:11,579 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 21:14:12,685 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:14:12,801 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 21:14:13,117 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:14:13,254 INFO L192 MainTranslator]: Completed translation [2019-11-06 21:14:13,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:13 WrapperNode [2019-11-06 21:14:13,255 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 21:14:13,256 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 21:14:13,256 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 21:14:13,256 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 21:14:13,272 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:13" (1/1) ... [2019-11-06 21:14:13,272 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:13" (1/1) ... [2019-11-06 21:14:13,352 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:13" (1/1) ... [2019-11-06 21:14:13,353 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:13" (1/1) ... [2019-11-06 21:14:13,426 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:13" (1/1) ... [2019-11-06 21:14:13,447 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:13" (1/1) ... [2019-11-06 21:14:13,475 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:13" (1/1) ... [2019-11-06 21:14:13,488 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 21:14:13,489 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 21:14:13,489 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 21:14:13,489 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 21:14:13,492 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:13" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 21:14:13,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 21:14:13,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 21:14:13,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-11-06 21:14:13,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2019-11-06 21:14:13,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2019-11-06 21:14:13,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2019-11-06 21:14:13,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2019-11-06 21:14:13,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ptr [2019-11-06 21:14:13,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2019-11-06 21:14:13,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2019-11-06 21:14:13,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int_negative [2019-11-06 21:14:13,562 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2019-11-06 21:14:13,563 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2019-11-06 21:14:13,563 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2019-11-06 21:14:13,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kzalloc_1 [2019-11-06 21:14:13,564 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_in [2019-11-06 21:14:13,566 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_out [2019-11-06 21:14:13,566 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2019-11-06 21:14:13,567 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_is_bulk_in [2019-11-06 21:14:13,624 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_is_bulk_out [2019-11-06 21:14:13,624 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register [2019-11-06 21:14:13,624 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_serial_data [2019-11-06 21:14:13,624 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_serial_data [2019-11-06 21:14:13,625 INFO L138 BoogieDeclarations]: Found implementation of procedure qcprobe [2019-11-06 21:14:13,625 INFO L138 BoogieDeclarations]: Found implementation of procedure qc_release [2019-11-06 21:14:13,625 INFO L138 BoogieDeclarations]: Found implementation of procedure qcinit [2019-11-06 21:14:13,625 INFO L138 BoogieDeclarations]: Found implementation of procedure qcexit [2019-11-06 21:14:13,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_usb_serial_driver_1 [2019-11-06 21:14:13,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_driver_2 [2019-11-06 21:14:13,626 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 21:14:13,626 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2019-11-06 21:14:13,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_register_driver_2 [2019-11-06 21:14:13,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_interface_3 [2019-11-06 21:14:13,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_4 [2019-11-06 21:14:13,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_interface_5 [2019-11-06 21:14:13,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_interface_6 [2019-11-06 21:14:13,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_7 [2019-11-06 21:14:13,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_interface_8 [2019-11-06 21:14:13,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_9 [2019-11-06 21:14:13,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_10 [2019-11-06 21:14:13,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_deregister_11 [2019-11-06 21:14:13,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2019-11-06 21:14:13,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc [2019-11-06 21:14:13,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2019-11-06 21:14:13,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-11-06 21:14:13,628 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2019-11-06 21:14:13,628 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2019-11-06 21:14:13,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-11-06 21:14:13,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_reset_resume_2 [2019-11-06 21:14:13,630 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2019-11-06 21:14:13,630 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister [2019-11-06 21:14:13,630 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_enable_autosuspend [2019-11-06 21:14:13,630 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2019-11-06 21:14:13,630 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_deregister [2019-11-06 21:14:13,631 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_disconnect [2019-11-06 21:14:13,631 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_probe [2019-11-06 21:14:13,631 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_register [2019-11-06 21:14:13,631 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_resume [2019-11-06 21:14:13,631 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_suspend [2019-11-06 21:14:13,632 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_interface [2019-11-06 21:14:13,632 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_chars_in_buffer [2019-11-06 21:14:13,633 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_close [2019-11-06 21:14:13,633 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_disconnect [2019-11-06 21:14:13,633 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_open [2019-11-06 21:14:13,633 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_release [2019-11-06 21:14:13,634 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_resume [2019-11-06 21:14:13,634 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_startup [2019-11-06 21:14:13,634 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_suspend [2019-11-06 21:14:13,634 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_write [2019-11-06 21:14:13,634 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_write_room [2019-11-06 21:14:13,635 INFO L138 BoogieDeclarations]: Found implementation of procedure external_alloc [2019-11-06 21:14:13,635 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2019-11-06 21:14:13,635 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2019-11-06 21:14:13,636 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2019-11-06 21:14:13,636 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 21:14:13,637 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2019-11-06 21:14:13,637 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-06 21:14:13,637 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-06 21:14:13,637 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2019-11-06 21:14:13,637 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 21:14:13,637 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2019-11-06 21:14:13,637 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-11-06 21:14:13,638 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-06 21:14:13,638 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-11-06 21:14:13,638 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-06 21:14:13,639 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2019-11-06 21:14:13,639 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2019-11-06 21:14:13,639 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2019-11-06 21:14:13,639 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2019-11-06 21:14:13,639 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2019-11-06 21:14:13,639 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2019-11-06 21:14:13,640 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ptr [2019-11-06 21:14:13,640 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2019-11-06 21:14:13,640 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2019-11-06 21:14:13,641 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int_negative [2019-11-06 21:14:13,641 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc [2019-11-06 21:14:13,641 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2019-11-06 21:14:13,641 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2019-11-06 21:14:13,641 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2019-11-06 21:14:13,641 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-11-06 21:14:13,642 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_4 [2019-11-06 21:14:13,642 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_7 [2019-11-06 21:14:13,642 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_9 [2019-11-06 21:14:13,642 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_10 [2019-11-06 21:14:13,642 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2019-11-06 21:14:13,642 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2019-11-06 21:14:13,643 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kzalloc_1 [2019-11-06 21:14:13,643 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2019-11-06 21:14:13,643 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_usb_serial_driver_1 [2019-11-06 21:14:13,643 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_driver_2 [2019-11-06 21:14:13,643 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2019-11-06 21:14:13,643 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_in [2019-11-06 21:14:13,643 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 21:14:13,644 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_out [2019-11-06 21:14:13,644 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2019-11-06 21:14:13,644 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_is_bulk_in [2019-11-06 21:14:13,644 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_is_bulk_out [2019-11-06 21:14:13,645 INFO L130 BoogieDeclarations]: Found specification of procedure usb_enable_autosuspend [2019-11-06 21:14:13,645 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2019-11-06 21:14:13,645 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_register_driver_2 [2019-11-06 21:14:13,645 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register [2019-11-06 21:14:13,645 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 21:14:13,646 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2019-11-06 21:14:13,646 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_deregister_11 [2019-11-06 21:14:13,647 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_interface [2019-11-06 21:14:13,647 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_interface_3 [2019-11-06 21:14:13,648 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_interface_5 [2019-11-06 21:14:13,648 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_interface_6 [2019-11-06 21:14:13,648 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_interface_8 [2019-11-06 21:14:13,648 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_serial_data [2019-11-06 21:14:13,648 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-06 21:14:13,649 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_serial_data [2019-11-06 21:14:13,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-06 21:14:13,649 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_register [2019-11-06 21:14:13,649 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_deregister [2019-11-06 21:14:13,649 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_probe [2019-11-06 21:14:13,650 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_disconnect [2019-11-06 21:14:13,650 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_suspend [2019-11-06 21:14:13,650 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_resume [2019-11-06 21:14:13,651 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_open [2019-11-06 21:14:13,654 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_close [2019-11-06 21:14:13,655 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_startup [2019-11-06 21:14:13,655 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_disconnect [2019-11-06 21:14:13,656 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_release [2019-11-06 21:14:13,662 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_write_room [2019-11-06 21:14:13,662 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_write [2019-11-06 21:14:13,662 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_chars_in_buffer [2019-11-06 21:14:13,662 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_suspend [2019-11-06 21:14:13,662 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_resume [2019-11-06 21:14:13,662 INFO L130 BoogieDeclarations]: Found specification of procedure qcprobe [2019-11-06 21:14:13,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 21:14:13,663 INFO L130 BoogieDeclarations]: Found specification of procedure qc_release [2019-11-06 21:14:13,664 INFO L130 BoogieDeclarations]: Found specification of procedure qcinit [2019-11-06 21:14:13,664 INFO L130 BoogieDeclarations]: Found specification of procedure qcexit [2019-11-06 21:14:13,664 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_reset_resume_2 [2019-11-06 21:14:13,664 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-11-06 21:14:13,664 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-11-06 21:14:13,664 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 21:14:13,665 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2019-11-06 21:14:13,665 INFO L130 BoogieDeclarations]: Found specification of procedure external_alloc [2019-11-06 21:14:13,665 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-06 21:14:13,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 21:14:13,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-06 21:14:13,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-06 21:14:13,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 21:14:13,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 21:14:14,750 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2019-11-06 21:14:15,934 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 21:14:15,935 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-11-06 21:14:15,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:14:15 BoogieIcfgContainer [2019-11-06 21:14:15,937 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 21:14:15,938 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 21:14:15,938 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 21:14:15,942 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 21:14:15,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:14:11" (1/3) ... [2019-11-06 21:14:15,943 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f5428f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:14:15, skipping insertion in model container [2019-11-06 21:14:15,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:13" (2/3) ... [2019-11-06 21:14:15,944 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f5428f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:14:15, skipping insertion in model container [2019-11-06 21:14:15,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:14:15" (3/3) ... [2019-11-06 21:14:15,947 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 [2019-11-06 21:14:15,958 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 21:14:15,971 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 21:14:15,984 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 21:14:16,030 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 21:14:16,031 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 21:14:16,031 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 21:14:16,031 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 21:14:16,031 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 21:14:16,031 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 21:14:16,031 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 21:14:16,031 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 21:14:16,067 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states. [2019-11-06 21:14:16,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2019-11-06 21:14:16,096 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:14:16,097 INFO L410 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] [2019-11-06 21:14:16,099 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:14:16,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:14:16,104 INFO L82 PathProgramCache]: Analyzing trace with hash -555790158, now seen corresponding path program 1 times [2019-11-06 21:14:16,110 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:14:16,110 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553222122] [2019-11-06 21:14:16,111 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:14:16,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:17,649 WARN L191 SmtUtils]: Spent 836.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2019-11-06 21:14:17,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:17,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:17,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:17,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:17,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:17,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:17,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:17,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:17,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:17,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:17,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:17,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:17,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:17,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:17,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:17,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:18,060 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2019-11-06 21:14:18,060 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553222122] [2019-11-06 21:14:18,063 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:14:18,063 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-06 21:14:18,064 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137621990] [2019-11-06 21:14:18,069 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-06 21:14:18,069 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:14:18,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-06 21:14:18,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-11-06 21:14:18,086 INFO L87 Difference]: Start difference. First operand 536 states. Second operand 8 states. [2019-11-06 21:14:18,938 WARN L191 SmtUtils]: Spent 805.00 ms on a formula simplification that was a NOOP. DAG size: 319 [2019-11-06 21:14:19,868 WARN L191 SmtUtils]: Spent 615.00 ms on a formula simplification that was a NOOP. DAG size: 321 [2019-11-06 21:14:20,586 WARN L191 SmtUtils]: Spent 602.00 ms on a formula simplification that was a NOOP. DAG size: 312 [2019-11-06 21:14:29,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:14:29,795 INFO L93 Difference]: Finished difference Result 1071 states and 1400 transitions. [2019-11-06 21:14:29,801 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-06 21:14:29,803 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 95 [2019-11-06 21:14:29,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:14:29,839 INFO L225 Difference]: With dead ends: 1071 [2019-11-06 21:14:29,839 INFO L226 Difference]: Without dead ends: 1024 [2019-11-06 21:14:29,844 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2019-11-06 21:14:29,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1024 states. [2019-11-06 21:14:30,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1024 to 965. [2019-11-06 21:14:30,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 965 states. [2019-11-06 21:14:30,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 965 states to 965 states and 1257 transitions. [2019-11-06 21:14:30,138 INFO L78 Accepts]: Start accepts. Automaton has 965 states and 1257 transitions. Word has length 95 [2019-11-06 21:14:30,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:14:30,140 INFO L462 AbstractCegarLoop]: Abstraction has 965 states and 1257 transitions. [2019-11-06 21:14:30,140 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-06 21:14:30,140 INFO L276 IsEmpty]: Start isEmpty. Operand 965 states and 1257 transitions. [2019-11-06 21:14:30,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2019-11-06 21:14:30,153 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:14:30,154 INFO L410 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] [2019-11-06 21:14:30,155 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:14:30,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:14:30,155 INFO L82 PathProgramCache]: Analyzing trace with hash 1045989093, now seen corresponding path program 1 times [2019-11-06 21:14:30,156 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:14:30,156 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142465990] [2019-11-06 21:14:30,156 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:14:30,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:30,995 WARN L191 SmtUtils]: Spent 554.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2019-11-06 21:14:31,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:31,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:31,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:31,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:31,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:31,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:31,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:31,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:31,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:31,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:31,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:31,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:31,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:31,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:31,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:31,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:31,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:31,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:31,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:31,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:31,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:31,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:31,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:31,512 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2019-11-06 21:14:31,513 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142465990] [2019-11-06 21:14:31,513 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:14:31,513 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-11-06 21:14:31,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464644007] [2019-11-06 21:14:31,515 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-06 21:14:31,516 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:14:31,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-06 21:14:31,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2019-11-06 21:14:31,516 INFO L87 Difference]: Start difference. First operand 965 states and 1257 transitions. Second operand 12 states. [2019-11-06 21:14:32,158 WARN L191 SmtUtils]: Spent 617.00 ms on a formula simplification that was a NOOP. DAG size: 319 [2019-11-06 21:14:33,380 WARN L191 SmtUtils]: Spent 589.00 ms on a formula simplification that was a NOOP. DAG size: 321 [2019-11-06 21:14:34,076 WARN L191 SmtUtils]: Spent 608.00 ms on a formula simplification that was a NOOP. DAG size: 312 [2019-11-06 21:14:39,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:14:39,740 INFO L93 Difference]: Finished difference Result 2235 states and 2912 transitions. [2019-11-06 21:14:39,742 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-06 21:14:39,742 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 138 [2019-11-06 21:14:39,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:14:39,754 INFO L225 Difference]: With dead ends: 2235 [2019-11-06 21:14:39,754 INFO L226 Difference]: Without dead ends: 1300 [2019-11-06 21:14:39,763 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2019-11-06 21:14:39,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1300 states. [2019-11-06 21:14:39,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1300 to 1232. [2019-11-06 21:14:39,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1232 states. [2019-11-06 21:14:39,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1232 states to 1232 states and 1611 transitions. [2019-11-06 21:14:39,974 INFO L78 Accepts]: Start accepts. Automaton has 1232 states and 1611 transitions. Word has length 138 [2019-11-06 21:14:39,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:14:39,975 INFO L462 AbstractCegarLoop]: Abstraction has 1232 states and 1611 transitions. [2019-11-06 21:14:39,975 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-06 21:14:39,975 INFO L276 IsEmpty]: Start isEmpty. Operand 1232 states and 1611 transitions. [2019-11-06 21:14:39,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2019-11-06 21:14:39,981 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:14:39,981 INFO L410 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] [2019-11-06 21:14:39,982 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:14:39,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:14:39,982 INFO L82 PathProgramCache]: Analyzing trace with hash 411451740, now seen corresponding path program 1 times [2019-11-06 21:14:39,982 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:14:39,983 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778379705] [2019-11-06 21:14:39,983 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:14:40,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:40,809 WARN L191 SmtUtils]: Spent 629.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2019-11-06 21:14:40,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:40,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:40,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:40,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:40,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:40,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:40,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:40,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:40,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:40,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:40,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:40,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:40,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:40,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:41,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:41,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:41,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:41,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:41,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:41,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:41,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:41,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:41,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:41,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:41,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:41,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:41,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:41,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:41,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:41,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:41,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:41,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:41,416 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2019-11-06 21:14:41,416 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778379705] [2019-11-06 21:14:41,417 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [750607437] [2019-11-06 21:14:41,417 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 [2019-11-06 21:14:42,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:42,144 INFO L256 TraceCheckSpWp]: Trace formula consists of 3502 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 21:14:42,161 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:14:42,246 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2019-11-06 21:14:42,247 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:14:42,247 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [15] total 16 [2019-11-06 21:14:42,247 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511339429] [2019-11-06 21:14:42,248 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 21:14:42,248 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:14:42,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 21:14:42,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2019-11-06 21:14:42,249 INFO L87 Difference]: Start difference. First operand 1232 states and 1611 transitions. Second operand 3 states. [2019-11-06 21:14:42,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:14:42,496 INFO L93 Difference]: Finished difference Result 2434 states and 3192 transitions. [2019-11-06 21:14:42,496 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 21:14:42,496 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 192 [2019-11-06 21:14:42,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:14:42,504 INFO L225 Difference]: With dead ends: 2434 [2019-11-06 21:14:42,504 INFO L226 Difference]: Without dead ends: 1232 [2019-11-06 21:14:42,508 INFO L630 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 [2019-11-06 21:14:42,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1232 states. [2019-11-06 21:14:42,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1232 to 1232. [2019-11-06 21:14:42,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1232 states. [2019-11-06 21:14:42,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1232 states to 1232 states and 1591 transitions. [2019-11-06 21:14:42,690 INFO L78 Accepts]: Start accepts. Automaton has 1232 states and 1591 transitions. Word has length 192 [2019-11-06 21:14:42,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:14:42,691 INFO L462 AbstractCegarLoop]: Abstraction has 1232 states and 1591 transitions. [2019-11-06 21:14:42,691 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 21:14:42,691 INFO L276 IsEmpty]: Start isEmpty. Operand 1232 states and 1591 transitions. [2019-11-06 21:14:42,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2019-11-06 21:14:42,696 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:14:42,696 INFO L410 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] [2019-11-06 21:14:42,914 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:14:42,915 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:14:42,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:14:42,916 INFO L82 PathProgramCache]: Analyzing trace with hash 58363358, now seen corresponding path program 1 times [2019-11-06 21:14:42,916 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:14:42,916 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238396664] [2019-11-06 21:14:42,916 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:14:42,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:43,846 WARN L191 SmtUtils]: Spent 735.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2019-11-06 21:14:43,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:43,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:43,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:43,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:43,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:43,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:43,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:43,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:43,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:43,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:43,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:44,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:44,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:44,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:44,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:44,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:44,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:44,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:44,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:44,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:44,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:44,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:44,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:44,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:44,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:44,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:44,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:44,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:44,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:44,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:44,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:44,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:44,402 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2019-11-06 21:14:44,403 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238396664] [2019-11-06 21:14:44,403 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [710661186] [2019-11-06 21:14:44,403 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 [2019-11-06 21:14:45,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:45,195 INFO L256 TraceCheckSpWp]: Trace formula consists of 3503 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-06 21:14:45,204 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:14:45,273 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2019-11-06 21:14:45,273 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:14:45,273 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [15] total 16 [2019-11-06 21:14:45,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598671646] [2019-11-06 21:14:45,274 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 21:14:45,275 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:14:45,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 21:14:45,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2019-11-06 21:14:45,275 INFO L87 Difference]: Start difference. First operand 1232 states and 1591 transitions. Second operand 3 states. [2019-11-06 21:14:45,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:14:45,583 INFO L93 Difference]: Finished difference Result 2349 states and 3067 transitions. [2019-11-06 21:14:45,584 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 21:14:45,584 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 192 [2019-11-06 21:14:45,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:14:45,592 INFO L225 Difference]: With dead ends: 2349 [2019-11-06 21:14:45,593 INFO L226 Difference]: Without dead ends: 1089 [2019-11-06 21:14:45,598 INFO L630 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 [2019-11-06 21:14:45,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1089 states. [2019-11-06 21:14:45,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1089 to 1073. [2019-11-06 21:14:45,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1073 states. [2019-11-06 21:14:45,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1073 states to 1073 states and 1408 transitions. [2019-11-06 21:14:45,860 INFO L78 Accepts]: Start accepts. Automaton has 1073 states and 1408 transitions. Word has length 192 [2019-11-06 21:14:45,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:14:45,861 INFO L462 AbstractCegarLoop]: Abstraction has 1073 states and 1408 transitions. [2019-11-06 21:14:45,861 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 21:14:45,861 INFO L276 IsEmpty]: Start isEmpty. Operand 1073 states and 1408 transitions. [2019-11-06 21:14:45,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2019-11-06 21:14:45,867 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:14:45,867 INFO L410 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] [2019-11-06 21:14:46,076 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:14:46,077 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:14:46,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:14:46,077 INFO L82 PathProgramCache]: Analyzing trace with hash -711252692, now seen corresponding path program 1 times [2019-11-06 21:14:46,078 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:14:46,078 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867262850] [2019-11-06 21:14:46,078 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:14:46,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat