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-f4eb214f-m [2019-10-13 19:11:28,001 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:11:28,004 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:11:28,022 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:11:28,022 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:11:28,024 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:11:28,026 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:11:28,036 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:11:28,040 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:11:28,042 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:11:28,044 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:11:28,046 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:11:28,046 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:11:28,048 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:11:28,050 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:11:28,051 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:11:28,053 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:11:28,054 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:11:28,055 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:11:28,060 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:11:28,064 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:11:28,066 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:11:28,068 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:11:28,069 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:11:28,071 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 19:11:28,071 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 19:11:28,071 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 19:11:28,073 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 19:11:28,074 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 19:11:28,075 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 19:11:28,075 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:11:28,076 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:11:28,076 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:11:28,077 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:11:28,078 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:11:28,079 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:11:28,079 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:11:28,079 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:11:28,080 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:11:28,080 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:11:28,081 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:11:28,082 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 19:11:28,105 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:11:28,105 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:11:28,106 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:11:28,107 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:11:28,107 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:11:28,107 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:11:28,107 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:11:28,107 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:11:28,108 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:11:28,108 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:11:28,108 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:11:28,109 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:11:28,109 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:11:28,110 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:11:28,110 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:11:28,110 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:11:28,110 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:11:28,111 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:11:28,111 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:11:28,111 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:11:28,111 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:11:28,111 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:11:28,112 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:11:28,112 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:11:28,112 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:11:28,115 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:11:28,115 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:11:28,116 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:11:28,116 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:11:28,397 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:11:28,417 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:11:28,420 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:11:28,422 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:11:28,422 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:11:28,423 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-validator-v0.8/linux-stable-c0cc359-1-104_1a-drivers--usb--serial--qcserial.ko-entry_point_ldv-val-v0.8.cil.out.i [2019-10-13 19:11:28,485 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96c2c94f0/03e9946c8a254cbc8ba8664977d84d69/FLAGc8bb58cf8 [2019-10-13 19:11:29,185 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:11:29,185 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-validator-v0.8/linux-stable-c0cc359-1-104_1a-drivers--usb--serial--qcserial.ko-entry_point_ldv-val-v0.8.cil.out.i [2019-10-13 19:11:29,216 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96c2c94f0/03e9946c8a254cbc8ba8664977d84d69/FLAGc8bb58cf8 [2019-10-13 19:11:29,316 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96c2c94f0/03e9946c8a254cbc8ba8664977d84d69 [2019-10-13 19:11:29,327 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:11:29,328 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:11:29,329 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:11:29,329 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:11:29,333 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:11:29,334 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:11:29" (1/1) ... [2019-10-13 19:11:29,336 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ecfbb0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:11:29, skipping insertion in model container [2019-10-13 19:11:29,337 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:11:29" (1/1) ... [2019-10-13 19:11:29,344 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:11:29,445 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:11:30,592 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:11:30,669 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:11:30,886 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:11:31,001 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:11:31,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:11:31 WrapperNode [2019-10-13 19:11:31,002 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:11:31,003 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:11:31,004 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:11:31,004 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:11:31,024 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:11:31" (1/1) ... [2019-10-13 19:11:31,024 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:11:31" (1/1) ... [2019-10-13 19:11:31,110 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:11:31" (1/1) ... [2019-10-13 19:11:31,110 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:11:31" (1/1) ... [2019-10-13 19:11:31,234 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:11:31" (1/1) ... [2019-10-13 19:11:31,262 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:11:31" (1/1) ... [2019-10-13 19:11:31,289 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:11:31" (1/1) ... [2019-10-13 19:11:31,315 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:11:31,315 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:11:31,316 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:11:31,316 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:11:31,318 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:11:31" (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 [2019-10-13 19:11:31,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:11:31,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:11:31,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-10-13 19:11:31,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2019-10-13 19:11:31,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2019-10-13 19:11:31,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2019-10-13 19:11:31,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2019-10-13 19:11:31,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ptr [2019-10-13 19:11:31,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2019-10-13 19:11:31,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2019-10-13 19:11:31,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int_negative [2019-10-13 19:11:31,457 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2019-10-13 19:11:31,457 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2019-10-13 19:11:31,457 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2019-10-13 19:11:31,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kzalloc_1 [2019-10-13 19:11:31,458 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_in [2019-10-13 19:11:31,458 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_out [2019-10-13 19:11:31,458 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2019-10-13 19:11:31,458 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_is_bulk_in [2019-10-13 19:11:31,460 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_is_bulk_out [2019-10-13 19:11:31,460 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register [2019-10-13 19:11:31,460 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_serial_data [2019-10-13 19:11:31,460 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_serial_data [2019-10-13 19:11:31,460 INFO L138 BoogieDeclarations]: Found implementation of procedure qcprobe [2019-10-13 19:11:31,460 INFO L138 BoogieDeclarations]: Found implementation of procedure qc_release [2019-10-13 19:11:31,461 INFO L138 BoogieDeclarations]: Found implementation of procedure qcinit [2019-10-13 19:11:31,461 INFO L138 BoogieDeclarations]: Found implementation of procedure qcexit [2019-10-13 19:11:31,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_usb_serial_driver_1 [2019-10-13 19:11:31,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_driver_2 [2019-10-13 19:11:31,461 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:11:31,461 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2019-10-13 19:11:31,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_register_driver_2 [2019-10-13 19:11:31,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_interface_3 [2019-10-13 19:11:31,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_4 [2019-10-13 19:11:31,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_interface_5 [2019-10-13 19:11:31,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_interface_6 [2019-10-13 19:11:31,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_7 [2019-10-13 19:11:31,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_interface_8 [2019-10-13 19:11:31,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_9 [2019-10-13 19:11:31,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_10 [2019-10-13 19:11:31,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_deregister_11 [2019-10-13 19:11:31,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2019-10-13 19:11:31,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc [2019-10-13 19:11:31,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2019-10-13 19:11:31,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-10-13 19:11:31,466 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2019-10-13 19:11:31,466 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2019-10-13 19:11:31,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-10-13 19:11:31,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_reset_resume_2 [2019-10-13 19:11:31,467 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2019-10-13 19:11:31,467 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister [2019-10-13 19:11:31,467 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_enable_autosuspend [2019-10-13 19:11:31,467 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2019-10-13 19:11:31,467 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_deregister [2019-10-13 19:11:31,468 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_disconnect [2019-10-13 19:11:31,468 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_probe [2019-10-13 19:11:31,468 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_register [2019-10-13 19:11:31,468 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_resume [2019-10-13 19:11:31,468 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_suspend [2019-10-13 19:11:31,469 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_interface [2019-10-13 19:11:31,469 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_chars_in_buffer [2019-10-13 19:11:31,470 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_close [2019-10-13 19:11:31,470 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_disconnect [2019-10-13 19:11:31,470 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_open [2019-10-13 19:11:31,470 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_release [2019-10-13 19:11:31,470 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_resume [2019-10-13 19:11:31,471 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_startup [2019-10-13 19:11:31,471 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_suspend [2019-10-13 19:11:31,472 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_write [2019-10-13 19:11:31,472 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_write_room [2019-10-13 19:11:31,472 INFO L138 BoogieDeclarations]: Found implementation of procedure external_alloc [2019-10-13 19:11:31,472 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2019-10-13 19:11:31,473 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2019-10-13 19:11:31,473 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2019-10-13 19:11:31,474 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:11:31,474 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2019-10-13 19:11:31,475 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 19:11:31,475 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-13 19:11:31,475 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2019-10-13 19:11:31,475 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 19:11:31,476 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2019-10-13 19:11:31,476 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-10-13 19:11:31,477 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-13 19:11:31,477 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-10-13 19:11:31,477 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 19:11:31,477 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2019-10-13 19:11:31,478 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2019-10-13 19:11:31,479 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2019-10-13 19:11:31,479 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2019-10-13 19:11:31,479 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2019-10-13 19:11:31,480 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2019-10-13 19:11:31,480 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ptr [2019-10-13 19:11:31,480 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2019-10-13 19:11:31,480 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2019-10-13 19:11:31,481 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int_negative [2019-10-13 19:11:31,481 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc [2019-10-13 19:11:31,481 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2019-10-13 19:11:31,481 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2019-10-13 19:11:31,481 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2019-10-13 19:11:31,481 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-10-13 19:11:31,481 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_4 [2019-10-13 19:11:31,482 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_7 [2019-10-13 19:11:31,482 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_9 [2019-10-13 19:11:31,482 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_10 [2019-10-13 19:11:31,482 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2019-10-13 19:11:31,482 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2019-10-13 19:11:31,482 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kzalloc_1 [2019-10-13 19:11:31,482 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2019-10-13 19:11:31,483 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_usb_serial_driver_1 [2019-10-13 19:11:31,483 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_driver_2 [2019-10-13 19:11:31,483 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2019-10-13 19:11:31,483 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_in [2019-10-13 19:11:31,483 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 19:11:31,483 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_out [2019-10-13 19:11:31,483 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2019-10-13 19:11:31,484 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_is_bulk_in [2019-10-13 19:11:31,484 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_is_bulk_out [2019-10-13 19:11:31,485 INFO L130 BoogieDeclarations]: Found specification of procedure usb_enable_autosuspend [2019-10-13 19:11:31,485 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2019-10-13 19:11:31,485 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_register_driver_2 [2019-10-13 19:11:31,486 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register [2019-10-13 19:11:31,486 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 19:11:31,486 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2019-10-13 19:11:31,487 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_deregister_11 [2019-10-13 19:11:31,489 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_interface [2019-10-13 19:11:31,489 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_interface_3 [2019-10-13 19:11:31,489 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_interface_5 [2019-10-13 19:11:31,489 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_interface_6 [2019-10-13 19:11:31,489 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_interface_8 [2019-10-13 19:11:31,489 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_serial_data [2019-10-13 19:11:31,490 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 19:11:31,490 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_serial_data [2019-10-13 19:11:31,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 19:11:31,490 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_register [2019-10-13 19:11:31,491 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_deregister [2019-10-13 19:11:31,491 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_probe [2019-10-13 19:11:31,491 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_disconnect [2019-10-13 19:11:31,491 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_suspend [2019-10-13 19:11:31,491 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_resume [2019-10-13 19:11:31,492 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_open [2019-10-13 19:11:31,495 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_close [2019-10-13 19:11:31,495 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_startup [2019-10-13 19:11:31,495 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_disconnect [2019-10-13 19:11:31,495 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_release [2019-10-13 19:11:31,501 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_write_room [2019-10-13 19:11:31,502 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_write [2019-10-13 19:11:31,502 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_chars_in_buffer [2019-10-13 19:11:31,502 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_suspend [2019-10-13 19:11:31,502 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_resume [2019-10-13 19:11:31,502 INFO L130 BoogieDeclarations]: Found specification of procedure qcprobe [2019-10-13 19:11:31,502 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 19:11:31,503 INFO L130 BoogieDeclarations]: Found specification of procedure qc_release [2019-10-13 19:11:31,503 INFO L130 BoogieDeclarations]: Found specification of procedure qcinit [2019-10-13 19:11:31,503 INFO L130 BoogieDeclarations]: Found specification of procedure qcexit [2019-10-13 19:11:31,503 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_reset_resume_2 [2019-10-13 19:11:31,504 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-10-13 19:11:31,504 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-10-13 19:11:31,504 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:11:31,504 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2019-10-13 19:11:31,505 INFO L130 BoogieDeclarations]: Found specification of procedure external_alloc [2019-10-13 19:11:31,505 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 19:11:31,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:11:31,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 19:11:31,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-13 19:11:31,506 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:11:31,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 19:11:32,593 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2019-10-13 19:11:33,788 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:11:33,789 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-13 19:11:33,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:11:33 BoogieIcfgContainer [2019-10-13 19:11:33,790 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:11:33,792 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:11:33,792 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:11:33,795 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:11:33,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:11:29" (1/3) ... [2019-10-13 19:11:33,796 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3056165f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:11:33, skipping insertion in model container [2019-10-13 19:11:33,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:11:31" (2/3) ... [2019-10-13 19:11:33,796 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3056165f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:11:33, skipping insertion in model container [2019-10-13 19:11:33,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:11:33" (3/3) ... [2019-10-13 19:11:33,798 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 [2019-10-13 19:11:33,807 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:11:33,815 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:11:33,826 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:11:33,854 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:11:33,854 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:11:33,854 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:11:33,855 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:11:33,855 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:11:33,855 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:11:33,855 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:11:33,855 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:11:33,884 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states. [2019-10-13 19:11:33,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2019-10-13 19:11:33,899 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:11:33,900 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] [2019-10-13 19:11:33,902 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:11:33,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:11:33,908 INFO L82 PathProgramCache]: Analyzing trace with hash -555790158, now seen corresponding path program 1 times [2019-10-13 19:11:33,916 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:11:33,917 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182848438] [2019-10-13 19:11:33,917 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:11:33,917 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:11:33,917 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:11:34,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:35,320 WARN L191 SmtUtils]: Spent 730.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2019-10-13 19:11:35,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:35,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:35,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:35,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:35,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:35,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:35,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:35,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:35,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:35,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:35,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:35,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:35,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:35,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:35,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:35,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:35,744 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2019-10-13 19:11:35,745 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182848438] [2019-10-13 19:11:35,746 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:11:35,746 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 19:11:35,746 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343597734] [2019-10-13 19:11:35,752 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:11:35,753 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:11:35,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:11:35,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-13 19:11:35,770 INFO L87 Difference]: Start difference. First operand 536 states. Second operand 8 states. [2019-10-13 19:11:36,450 WARN L191 SmtUtils]: Spent 642.00 ms on a formula simplification that was a NOOP. DAG size: 319 [2019-10-13 19:11:37,387 WARN L191 SmtUtils]: Spent 621.00 ms on a formula simplification that was a NOOP. DAG size: 321 [2019-10-13 19:11:38,073 WARN L191 SmtUtils]: Spent 596.00 ms on a formula simplification that was a NOOP. DAG size: 312 [2019-10-13 19:11:46,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:11:46,644 INFO L93 Difference]: Finished difference Result 1071 states and 1400 transitions. [2019-10-13 19:11:46,652 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 19:11:46,654 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 95 [2019-10-13 19:11:46,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:11:46,682 INFO L225 Difference]: With dead ends: 1071 [2019-10-13 19:11:46,682 INFO L226 Difference]: Without dead ends: 1024 [2019-10-13 19:11:46,687 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2019-10-13 19:11:46,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1024 states. [2019-10-13 19:11:46,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1024 to 965. [2019-10-13 19:11:46,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 965 states. [2019-10-13 19:11:46,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 965 states to 965 states and 1257 transitions. [2019-10-13 19:11:46,906 INFO L78 Accepts]: Start accepts. Automaton has 965 states and 1257 transitions. Word has length 95 [2019-10-13 19:11:46,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:11:46,907 INFO L462 AbstractCegarLoop]: Abstraction has 965 states and 1257 transitions. [2019-10-13 19:11:46,907 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:11:46,907 INFO L276 IsEmpty]: Start isEmpty. Operand 965 states and 1257 transitions. [2019-10-13 19:11:46,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2019-10-13 19:11:46,920 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:11:46,921 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] [2019-10-13 19:11:46,921 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:11:46,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:11:46,921 INFO L82 PathProgramCache]: Analyzing trace with hash 1045989093, now seen corresponding path program 1 times [2019-10-13 19:11:46,922 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:11:46,922 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134281982] [2019-10-13 19:11:46,922 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:11:46,922 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:11:46,922 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:11:46,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:47,700 WARN L191 SmtUtils]: Spent 586.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2019-10-13 19:11:47,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:47,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:47,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:47,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:47,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:47,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:47,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:47,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:47,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:47,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:47,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:47,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:47,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:47,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:47,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:47,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:47,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:47,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:47,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:47,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:47,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:47,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:47,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:48,034 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2019-10-13 19:11:48,035 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134281982] [2019-10-13 19:11:48,035 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:11:48,035 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-13 19:11:48,035 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511009988] [2019-10-13 19:11:48,037 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 19:11:48,037 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:11:48,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 19:11:48,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:11:48,038 INFO L87 Difference]: Start difference. First operand 965 states and 1257 transitions. Second operand 12 states. [2019-10-13 19:11:48,616 WARN L191 SmtUtils]: Spent 561.00 ms on a formula simplification that was a NOOP. DAG size: 319 [2019-10-13 19:11:49,715 WARN L191 SmtUtils]: Spent 609.00 ms on a formula simplification that was a NOOP. DAG size: 321 [2019-10-13 19:11:50,340 WARN L191 SmtUtils]: Spent 525.00 ms on a formula simplification that was a NOOP. DAG size: 312 [2019-10-13 19:11:55,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:11:55,821 INFO L93 Difference]: Finished difference Result 2235 states and 2912 transitions. [2019-10-13 19:11:55,822 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-13 19:11:55,823 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 138 [2019-10-13 19:11:55,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:11:55,831 INFO L225 Difference]: With dead ends: 2235 [2019-10-13 19:11:55,832 INFO L226 Difference]: Without dead ends: 1300 [2019-10-13 19:11:55,838 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2019-10-13 19:11:55,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1300 states. [2019-10-13 19:11:55,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1300 to 1232. [2019-10-13 19:11:55,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1232 states. [2019-10-13 19:11:56,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1232 states to 1232 states and 1611 transitions. [2019-10-13 19:11:56,005 INFO L78 Accepts]: Start accepts. Automaton has 1232 states and 1611 transitions. Word has length 138 [2019-10-13 19:11:56,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:11:56,005 INFO L462 AbstractCegarLoop]: Abstraction has 1232 states and 1611 transitions. [2019-10-13 19:11:56,006 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 19:11:56,006 INFO L276 IsEmpty]: Start isEmpty. Operand 1232 states and 1611 transitions. [2019-10-13 19:11:56,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2019-10-13 19:11:56,011 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:11:56,011 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] [2019-10-13 19:11:56,012 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:11:56,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:11:56,012 INFO L82 PathProgramCache]: Analyzing trace with hash 411451740, now seen corresponding path program 1 times [2019-10-13 19:11:56,012 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:11:56,013 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028383698] [2019-10-13 19:11:56,013 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:11:56,013 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:11:56,013 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:11:56,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:56,840 WARN L191 SmtUtils]: Spent 607.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2019-10-13 19:11:56,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:56,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:56,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:56,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:56,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:56,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:56,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:56,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:57,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:57,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:57,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:57,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:57,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:57,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:57,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:57,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:57,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:57,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:57,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:57,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:57,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:57,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:57,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:57,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:57,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:57,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:57,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:57,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:57,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:57,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:57,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:57,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:57,540 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2019-10-13 19:11:57,541 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028383698] [2019-10-13 19:11:57,541 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2065490920] [2019-10-13 19:11:57,541 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:11:58,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:58,165 INFO L256 TraceCheckSpWp]: Trace formula consists of 3502 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:11:58,188 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:11:58,281 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2019-10-13 19:11:58,281 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:11:58,282 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [15] total 16 [2019-10-13 19:11:58,282 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236575212] [2019-10-13 19:11:58,283 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 19:11:58,283 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:11:58,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 19:11:58,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2019-10-13 19:11:58,284 INFO L87 Difference]: Start difference. First operand 1232 states and 1611 transitions. Second operand 3 states. [2019-10-13 19:11:58,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:11:58,528 INFO L93 Difference]: Finished difference Result 2434 states and 3192 transitions. [2019-10-13 19:11:58,528 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 19:11:58,529 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 192 [2019-10-13 19:11:58,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:11:58,540 INFO L225 Difference]: With dead ends: 2434 [2019-10-13 19:11:58,540 INFO L226 Difference]: Without dead ends: 1232 [2019-10-13 19:11:58,544 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 [2019-10-13 19:11:58,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1232 states. [2019-10-13 19:11:58,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1232 to 1232. [2019-10-13 19:11:58,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1232 states. [2019-10-13 19:11:58,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1232 states to 1232 states and 1591 transitions. [2019-10-13 19:11:58,740 INFO L78 Accepts]: Start accepts. Automaton has 1232 states and 1591 transitions. Word has length 192 [2019-10-13 19:11:58,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:11:58,740 INFO L462 AbstractCegarLoop]: Abstraction has 1232 states and 1591 transitions. [2019-10-13 19:11:58,741 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 19:11:58,741 INFO L276 IsEmpty]: Start isEmpty. Operand 1232 states and 1591 transitions. [2019-10-13 19:11:58,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2019-10-13 19:11:58,746 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:11:58,746 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] [2019-10-13 19:11:58,954 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:11:58,955 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:11:58,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:11:58,956 INFO L82 PathProgramCache]: Analyzing trace with hash 58363358, now seen corresponding path program 1 times [2019-10-13 19:11:58,956 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:11:58,956 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786242667] [2019-10-13 19:11:58,956 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:11:58,957 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:11:58,957 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:11:59,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:59,879 WARN L191 SmtUtils]: Spent 645.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2019-10-13 19:11:59,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:59,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:12:00,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:12:00,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:12:00,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:12:00,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:12:00,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:12:00,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:12:00,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:12:00,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:12:00,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:12:00,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:12:00,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:12:00,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:12:00,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:12:00,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:12:00,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:12:00,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:12:00,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:12:00,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:12:00,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:12:00,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:12:00,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:12:00,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:12:00,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:12:00,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:12:00,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:12:00,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:12:00,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:12:00,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:12:00,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:12:00,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:12:00,495 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2019-10-13 19:12:00,497 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786242667] [2019-10-13 19:12:00,497 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [425748017] [2019-10-13 19:12:00,497 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 [2019-10-13 19:12:01,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:12:01,057 INFO L256 TraceCheckSpWp]: Trace formula consists of 3503 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-13 19:12:01,067 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:12:01,140 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2019-10-13 19:12:01,140 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:12:01,141 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [15] total 16 [2019-10-13 19:12:01,141 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429193359] [2019-10-13 19:12:01,141 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 19:12:01,142 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:12:01,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 19:12:01,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2019-10-13 19:12:01,142 INFO L87 Difference]: Start difference. First operand 1232 states and 1591 transitions. Second operand 3 states. [2019-10-13 19:12:01,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:12:01,534 INFO L93 Difference]: Finished difference Result 2349 states and 3067 transitions. [2019-10-13 19:12:01,534 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 19:12:01,535 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 192 [2019-10-13 19:12:01,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:12:01,541 INFO L225 Difference]: With dead ends: 2349 [2019-10-13 19:12:01,541 INFO L226 Difference]: Without dead ends: 1089 [2019-10-13 19:12:01,545 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 [2019-10-13 19:12:01,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1089 states. [2019-10-13 19:12:01,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1089 to 1073. [2019-10-13 19:12:01,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1073 states. [2019-10-13 19:12:01,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1073 states to 1073 states and 1408 transitions. [2019-10-13 19:12:01,740 INFO L78 Accepts]: Start accepts. Automaton has 1073 states and 1408 transitions. Word has length 192 [2019-10-13 19:12:01,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:12:01,742 INFO L462 AbstractCegarLoop]: Abstraction has 1073 states and 1408 transitions. [2019-10-13 19:12:01,742 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 19:12:01,747 INFO L276 IsEmpty]: Start isEmpty. Operand 1073 states and 1408 transitions. [2019-10-13 19:12:01,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2019-10-13 19:12:01,753 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:12:01,753 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] [2019-10-13 19:12:01,967 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:12:01,967 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:12:01,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:12:01,968 INFO L82 PathProgramCache]: Analyzing trace with hash -711252692, now seen corresponding path program 1 times [2019-10-13 19:12:01,968 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:12:01,968 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481093328] [2019-10-13 19:12:01,968 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:12:01,968 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:12:01,969 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:12:02,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:12:02,666 WARN L191 SmtUtils]: Spent 534.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2019-10-13 19:12:02,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:12:02,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:12:02,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:12:02,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:12:02,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:12:02,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:12:02,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:12:02,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:12:02,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:12:02,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:12:02,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:12:02,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:12:02,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:12:02,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:12:02,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:12:02,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:12:02,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:12:02,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:12:02,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:12:02,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:12:02,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:12:02,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:12:02,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:12:03,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:12:03,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:12:03,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:12:03,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:12:03,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:12:03,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:12:03,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:12:03,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:12:03,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:12:03,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:12:03,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:12:03,215 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2019-10-13 19:12:03,215 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481093328] [2019-10-13 19:12:03,215 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:12:03,216 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2019-10-13 19:12:03,216 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277586762] [2019-10-13 19:12:03,217 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-13 19:12:03,217 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:12:03,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-13 19:12:03,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2019-10-13 19:12:03,218 INFO L87 Difference]: Start difference. First operand 1073 states and 1408 transitions. Second operand 16 states. [2019-10-13 19:12:03,791 WARN L191 SmtUtils]: Spent 554.00 ms on a formula simplification that was a NOOP. DAG size: 319