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-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--staging--media--go7007--go7007-loader.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 22:20:22,251 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 22:20:22,254 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 22:20:22,273 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 22:20:22,273 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 22:20:22,274 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 22:20:22,275 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 22:20:22,277 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 22:20:22,281 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 22:20:22,282 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 22:20:22,283 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 22:20:22,285 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 22:20:22,285 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 22:20:22,286 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 22:20:22,287 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 22:20:22,288 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 22:20:22,289 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 22:20:22,290 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 22:20:22,292 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 22:20:22,294 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 22:20:22,296 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 22:20:22,297 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 22:20:22,298 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 22:20:22,299 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 22:20:22,301 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 22:20:22,302 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 22:20:22,302 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 22:20:22,303 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 22:20:22,303 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 22:20:22,304 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 22:20:22,304 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 22:20:22,305 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 22:20:22,306 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 22:20:22,307 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 22:20:22,308 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 22:20:22,308 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 22:20:22,309 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 22:20:22,309 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 22:20:22,309 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 22:20:22,310 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 22:20:22,311 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 22:20:22,312 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-14 22:20:22,330 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 22:20:22,330 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 22:20:22,333 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 22:20:22,334 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 22:20:22,334 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 22:20:22,334 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 22:20:22,334 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 22:20:22,335 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 22:20:22,335 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 22:20:22,335 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 22:20:22,335 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 22:20:22,335 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 22:20:22,336 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 22:20:22,336 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 22:20:22,336 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 22:20:22,337 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 22:20:22,337 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 22:20:22,338 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 22:20:22,338 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 22:20:22,338 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 22:20:22,338 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 22:20:22,339 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 22:20:22,339 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 22:20:22,339 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 22:20:22,339 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 22:20:22,339 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 22:20:22,340 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 22:20:22,340 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 22:20:22,340 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 22:20:22,621 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 22:20:22,635 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 22:20:22,638 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 22:20:22,640 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 22:20:22,640 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 22:20:22,641 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--staging--media--go7007--go7007-loader.ko-entry_point.cil.out.i [2019-10-14 22:20:22,704 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eed08af1a/21c2d47efc2f4a1b9137970f0ebc68ca/FLAG25b47ffa2 [2019-10-14 22:20:23,421 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 22:20:23,423 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--staging--media--go7007--go7007-loader.ko-entry_point.cil.out.i [2019-10-14 22:20:23,469 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eed08af1a/21c2d47efc2f4a1b9137970f0ebc68ca/FLAG25b47ffa2 [2019-10-14 22:20:23,549 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eed08af1a/21c2d47efc2f4a1b9137970f0ebc68ca [2019-10-14 22:20:23,558 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 22:20:23,560 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 22:20:23,562 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 22:20:23,562 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 22:20:23,565 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 22:20:23,567 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:20:23" (1/1) ... [2019-10-14 22:20:23,570 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@134a26f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:20:23, skipping insertion in model container [2019-10-14 22:20:23,570 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:20:23" (1/1) ... [2019-10-14 22:20:23,578 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 22:20:23,684 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 22:20:24,702 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 22:20:24,760 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 22:20:24,948 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 22:20:25,016 INFO L192 MainTranslator]: Completed translation [2019-10-14 22:20:25,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:20:25 WrapperNode [2019-10-14 22:20:25,018 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 22:20:25,019 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 22:20:25,019 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 22:20:25,019 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 22:20:25,035 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:20:25" (1/1) ... [2019-10-14 22:20:25,035 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:20:25" (1/1) ... [2019-10-14 22:20:25,073 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:20:25" (1/1) ... [2019-10-14 22:20:25,074 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:20:25" (1/1) ... [2019-10-14 22:20:25,138 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:20:25" (1/1) ... [2019-10-14 22:20:25,148 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:20:25" (1/1) ... [2019-10-14 22:20:25,161 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:20:25" (1/1) ... [2019-10-14 22:20:25,183 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 22:20:25,184 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 22:20:25,184 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 22:20:25,185 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 22:20:25,188 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:20:25" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 22:20:25,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 22:20:25,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 22:20:25,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2019-10-14 22:20:25,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-10-14 22:20:25,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2019-10-14 22:20:25,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2019-10-14 22:20:25,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ptr [2019-10-14 22:20:25,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2019-10-14 22:20:25,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2019-10-14 22:20:25,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2019-10-14 22:20:25,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2019-10-14 22:20:25,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2019-10-14 22:20:25,276 INFO L138 BoogieDeclarations]: Found implementation of procedure go7007_loader_probe [2019-10-14 22:20:25,276 INFO L138 BoogieDeclarations]: Found implementation of procedure go7007_loader_disconnect [2019-10-14 22:20:25,277 INFO L138 BoogieDeclarations]: Found implementation of procedure go7007_loader_driver_init [2019-10-14 22:20:25,277 INFO L138 BoogieDeclarations]: Found implementation of procedure go7007_loader_driver_exit [2019-10-14 22:20:25,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_driver_1 [2019-10-14 22:20:25,277 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 22:20:25,278 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2019-10-14 22:20:25,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_dev_2 [2019-10-14 22:20:25,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_3 [2019-10-14 22:20:25,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_register_driver_4 [2019-10-14 22:20:25,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_deregister_5 [2019-10-14 22:20:25,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2019-10-14 22:20:25,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata [2019-10-14 22:20:25,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata [2019-10-14 22:20:25,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_put_intf [2019-10-14 22:20:25,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2019-10-14 22:20:25,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2019-10-14 22:20:25,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_fill_int_urb [2019-10-14 22:20:25,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_fill_bulk_urb [2019-10-14 22:20:25,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2019-10-14 22:20:25,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_interface_to_usbdev [2019-10-14 22:20:25,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_dev [2019-10-14 22:20:25,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_dev [2019-10-14 22:20:25,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_interface [2019-10-14 22:20:25,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_interface [2019-10-14 22:20:25,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_serial_register [2019-10-14 22:20:25,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_serial_deregister [2019-10-14 22:20:25,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-10-14 22:20:25,283 INFO L138 BoogieDeclarations]: Found implementation of procedure _dev_info [2019-10-14 22:20:25,283 INFO L138 BoogieDeclarations]: Found implementation of procedure cypress_load_firmware [2019-10-14 22:20:25,284 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2019-10-14 22:20:25,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-10-14 22:20:25,284 INFO L138 BoogieDeclarations]: Found implementation of procedure release_firmware [2019-10-14 22:20:25,284 INFO L138 BoogieDeclarations]: Found implementation of procedure request_firmware [2019-10-14 22:20:25,284 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister [2019-10-14 22:20:25,285 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2019-10-14 22:20:25,285 INFO L138 BoogieDeclarations]: Found implementation of procedure external_alloc [2019-10-14 22:20:25,285 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2019-10-14 22:20:25,285 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2019-10-14 22:20:25,286 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 22:20:25,286 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2019-10-14 22:20:25,286 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2019-10-14 22:20:25,286 INFO L130 BoogieDeclarations]: Found specification of procedure _dev_info [2019-10-14 22:20:25,287 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_3 [2019-10-14 22:20:25,287 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2019-10-14 22:20:25,287 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_dev_2 [2019-10-14 22:20:25,287 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2019-10-14 22:20:25,288 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_register_driver_4 [2019-10-14 22:20:25,288 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2019-10-14 22:20:25,288 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_deregister_5 [2019-10-14 22:20:25,289 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_interface_to_usbdev [2019-10-14 22:20:25,289 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_dev [2019-10-14 22:20:25,289 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata [2019-10-14 22:20:25,289 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-14 22:20:25,290 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-14 22:20:25,290 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 22:20:25,290 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2019-10-14 22:20:25,291 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-10-14 22:20:25,291 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-14 22:20:25,291 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-10-14 22:20:25,291 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-14 22:20:25,291 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2019-10-14 22:20:25,292 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2019-10-14 22:20:25,293 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2019-10-14 22:20:25,293 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ptr [2019-10-14 22:20:25,293 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2019-10-14 22:20:25,293 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2019-10-14 22:20:25,294 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2019-10-14 22:20:25,294 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2019-10-14 22:20:25,295 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_driver_1 [2019-10-14 22:20:25,295 INFO L130 BoogieDeclarations]: Found specification of procedure request_firmware [2019-10-14 22:20:25,296 INFO L130 BoogieDeclarations]: Found specification of procedure release_firmware [2019-10-14 22:20:25,296 INFO L130 BoogieDeclarations]: Found specification of procedure cypress_load_firmware [2019-10-14 22:20:25,296 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 22:20:25,296 INFO L130 BoogieDeclarations]: Found specification of procedure go7007_loader_probe [2019-10-14 22:20:25,297 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 22:20:25,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 22:20:25,298 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-14 22:20:25,299 INFO L130 BoogieDeclarations]: Found specification of procedure go7007_loader_disconnect [2019-10-14 22:20:25,299 INFO L130 BoogieDeclarations]: Found specification of procedure go7007_loader_driver_init [2019-10-14 22:20:25,299 INFO L130 BoogieDeclarations]: Found specification of procedure go7007_loader_driver_exit [2019-10-14 22:20:25,300 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-10-14 22:20:25,300 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-10-14 22:20:25,300 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 22:20:25,301 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2019-10-14 22:20:25,301 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata [2019-10-14 22:20:25,301 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_put_intf [2019-10-14 22:20:25,301 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2019-10-14 22:20:25,302 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2019-10-14 22:20:25,302 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_fill_int_urb [2019-10-14 22:20:25,302 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_fill_bulk_urb [2019-10-14 22:20:25,302 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2019-10-14 22:20:25,302 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2019-10-14 22:20:25,303 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_dev [2019-10-14 22:20:25,303 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_interface [2019-10-14 22:20:25,303 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_interface [2019-10-14 22:20:25,303 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_serial_register [2019-10-14 22:20:25,303 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_serial_deregister [2019-10-14 22:20:25,304 INFO L130 BoogieDeclarations]: Found specification of procedure external_alloc [2019-10-14 22:20:25,304 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-14 22:20:25,304 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-10-14 22:20:25,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 22:20:25,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-14 22:20:25,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-14 22:20:25,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 22:20:25,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-14 22:20:25,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 22:20:26,124 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2019-10-14 22:20:26,761 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2019-10-14 22:20:26,794 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 22:20:26,794 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-14 22:20:26,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:20:26 BoogieIcfgContainer [2019-10-14 22:20:26,796 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 22:20:26,797 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 22:20:26,797 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 22:20:26,801 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 22:20:26,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:20:23" (1/3) ... [2019-10-14 22:20:26,802 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66ff199c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:20:26, skipping insertion in model container [2019-10-14 22:20:26,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:20:25" (2/3) ... [2019-10-14 22:20:26,802 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66ff199c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:20:26, skipping insertion in model container [2019-10-14 22:20:26,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:20:26" (3/3) ... [2019-10-14 22:20:26,804 INFO L109 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--staging--media--go7007--go7007-loader.ko-entry_point.cil.out.i [2019-10-14 22:20:26,814 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 22:20:26,825 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 22:20:26,837 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 22:20:26,863 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 22:20:26,864 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 22:20:26,864 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 22:20:26,864 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 22:20:26,864 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 22:20:26,864 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 22:20:26,864 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 22:20:26,865 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 22:20:26,891 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states. [2019-10-14 22:20:26,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-10-14 22:20:26,901 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:20:26,902 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 22:20:26,905 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:20:26,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:20:26,912 INFO L82 PathProgramCache]: Analyzing trace with hash -712022223, now seen corresponding path program 1 times [2019-10-14 22:20:26,922 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:20:26,923 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120542368] [2019-10-14 22:20:26,923 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:20:26,923 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:20:26,924 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:20:27,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:28,098 WARN L191 SmtUtils]: Spent 610.00 ms on a formula simplification that was a NOOP. DAG size: 238 [2019-10-14 22:20:28,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:28,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:28,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:28,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:28,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:28,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:28,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:20:28,363 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120542368] [2019-10-14 22:20:28,363 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 22:20:28,364 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-14 22:20:28,364 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109160048] [2019-10-14 22:20:28,369 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 22:20:28,370 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:20:28,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 22:20:28,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-14 22:20:28,388 INFO L87 Difference]: Start difference. First operand 244 states. Second operand 6 states. [2019-10-14 22:20:28,918 WARN L191 SmtUtils]: Spent 492.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2019-10-14 22:20:29,798 WARN L191 SmtUtils]: Spent 445.00 ms on a formula simplification that was a NOOP. DAG size: 243 [2019-10-14 22:20:30,686 WARN L191 SmtUtils]: Spent 461.00 ms on a formula simplification that was a NOOP. DAG size: 240 [2019-10-14 22:20:32,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:20:32,469 INFO L93 Difference]: Finished difference Result 593 states and 764 transitions. [2019-10-14 22:20:32,470 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-14 22:20:32,471 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 39 [2019-10-14 22:20:32,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:20:32,489 INFO L225 Difference]: With dead ends: 593 [2019-10-14 22:20:32,490 INFO L226 Difference]: Without dead ends: 381 [2019-10-14 22:20:32,495 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2019-10-14 22:20:32,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2019-10-14 22:20:32,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 301. [2019-10-14 22:20:32,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2019-10-14 22:20:32,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 366 transitions. [2019-10-14 22:20:32,623 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 366 transitions. Word has length 39 [2019-10-14 22:20:32,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:20:32,623 INFO L462 AbstractCegarLoop]: Abstraction has 301 states and 366 transitions. [2019-10-14 22:20:32,623 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 22:20:32,624 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 366 transitions. [2019-10-14 22:20:32,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2019-10-14 22:20:32,626 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:20:32,626 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-14 22:20:32,627 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:20:32,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:20:32,627 INFO L82 PathProgramCache]: Analyzing trace with hash -607294300, now seen corresponding path program 1 times [2019-10-14 22:20:32,628 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:20:32,628 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459835387] [2019-10-14 22:20:32,628 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:20:32,628 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:20:32,628 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:20:32,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:33,219 WARN L191 SmtUtils]: Spent 423.00 ms on a formula simplification that was a NOOP. DAG size: 238 [2019-10-14 22:20:33,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:33,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:33,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:33,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:33,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:33,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:33,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:33,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:33,454 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-14 22:20:33,454 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459835387] [2019-10-14 22:20:33,454 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 22:20:33,455 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-14 22:20:33,455 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793404019] [2019-10-14 22:20:33,473 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-14 22:20:33,473 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:20:33,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-14 22:20:33,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-10-14 22:20:33,474 INFO L87 Difference]: Start difference. First operand 301 states and 366 transitions. Second operand 7 states. [2019-10-14 22:20:33,889 WARN L191 SmtUtils]: Spent 392.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2019-10-14 22:20:34,422 WARN L191 SmtUtils]: Spent 439.00 ms on a formula simplification that was a NOOP. DAG size: 244 [2019-10-14 22:20:34,905 WARN L191 SmtUtils]: Spent 393.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2019-10-14 22:20:36,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:20:36,578 INFO L93 Difference]: Finished difference Result 406 states and 515 transitions. [2019-10-14 22:20:36,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-14 22:20:36,579 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 55 [2019-10-14 22:20:36,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:20:36,585 INFO L225 Difference]: With dead ends: 406 [2019-10-14 22:20:36,586 INFO L226 Difference]: Without dead ends: 403 [2019-10-14 22:20:36,587 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2019-10-14 22:20:36,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2019-10-14 22:20:36,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 300. [2019-10-14 22:20:36,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 300 states. [2019-10-14 22:20:36,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 364 transitions. [2019-10-14 22:20:36,650 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 364 transitions. Word has length 55 [2019-10-14 22:20:36,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:20:36,650 INFO L462 AbstractCegarLoop]: Abstraction has 300 states and 364 transitions. [2019-10-14 22:20:36,650 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-14 22:20:36,650 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 364 transitions. [2019-10-14 22:20:36,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-10-14 22:20:36,653 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:20:36,653 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-14 22:20:36,653 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:20:36,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:20:36,654 INFO L82 PathProgramCache]: Analyzing trace with hash -1646438857, now seen corresponding path program 1 times [2019-10-14 22:20:36,654 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:20:36,654 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384377494] [2019-10-14 22:20:36,655 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:20:36,655 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:20:36,655 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:20:36,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:37,242 WARN L191 SmtUtils]: Spent 439.00 ms on a formula simplification that was a NOOP. DAG size: 238 [2019-10-14 22:20:37,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:37,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:37,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:37,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:37,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:37,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:37,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:37,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:37,431 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-14 22:20:37,431 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384377494] [2019-10-14 22:20:37,431 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 22:20:37,432 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-14 22:20:37,432 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146289681] [2019-10-14 22:20:37,432 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-14 22:20:37,433 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:20:37,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-14 22:20:37,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-10-14 22:20:37,433 INFO L87 Difference]: Start difference. First operand 300 states and 364 transitions. Second operand 7 states. [2019-10-14 22:20:37,882 WARN L191 SmtUtils]: Spent 432.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2019-10-14 22:20:38,398 WARN L191 SmtUtils]: Spent 414.00 ms on a formula simplification that was a NOOP. DAG size: 244 [2019-10-14 22:20:38,915 WARN L191 SmtUtils]: Spent 444.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2019-10-14 22:20:41,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:20:41,740 INFO L93 Difference]: Finished difference Result 969 states and 1220 transitions. [2019-10-14 22:20:41,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-14 22:20:41,741 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 56 [2019-10-14 22:20:41,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:20:41,747 INFO L225 Difference]: With dead ends: 969 [2019-10-14 22:20:41,747 INFO L226 Difference]: Without dead ends: 690 [2019-10-14 22:20:41,751 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2019-10-14 22:20:41,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2019-10-14 22:20:41,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 580. [2019-10-14 22:20:41,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 580 states. [2019-10-14 22:20:41,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 707 transitions. [2019-10-14 22:20:41,848 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 707 transitions. Word has length 56 [2019-10-14 22:20:41,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:20:41,849 INFO L462 AbstractCegarLoop]: Abstraction has 580 states and 707 transitions. [2019-10-14 22:20:41,849 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-14 22:20:41,849 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 707 transitions. [2019-10-14 22:20:41,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-10-14 22:20:41,851 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:20:41,851 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-14 22:20:41,852 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:20:41,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:20:41,852 INFO L82 PathProgramCache]: Analyzing trace with hash 499823111, now seen corresponding path program 1 times [2019-10-14 22:20:41,852 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:20:41,852 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876943015] [2019-10-14 22:20:41,853 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:20:41,853 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:20:41,853 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:20:41,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:42,377 WARN L191 SmtUtils]: Spent 424.00 ms on a formula simplification that was a NOOP. DAG size: 238 [2019-10-14 22:20:42,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:42,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:42,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:42,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:42,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:42,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:42,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:42,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:42,563 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-14 22:20:42,564 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876943015] [2019-10-14 22:20:42,565 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 22:20:42,565 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-14 22:20:42,565 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087318876] [2019-10-14 22:20:42,566 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-14 22:20:42,566 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:20:42,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-14 22:20:42,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-10-14 22:20:42,567 INFO L87 Difference]: Start difference. First operand 580 states and 707 transitions. Second operand 7 states. [2019-10-14 22:20:42,957 WARN L191 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2019-10-14 22:20:43,429 WARN L191 SmtUtils]: Spent 397.00 ms on a formula simplification that was a NOOP. DAG size: 243 [2019-10-14 22:20:43,861 WARN L191 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 240 [2019-10-14 22:20:46,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:20:46,511 INFO L93 Difference]: Finished difference Result 688 states and 862 transitions. [2019-10-14 22:20:46,511 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-14 22:20:46,512 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 57 [2019-10-14 22:20:46,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:20:46,518 INFO L225 Difference]: With dead ends: 688 [2019-10-14 22:20:46,518 INFO L226 Difference]: Without dead ends: 685 [2019-10-14 22:20:46,519 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2019-10-14 22:20:46,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2019-10-14 22:20:46,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 581. [2019-10-14 22:20:46,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 581 states. [2019-10-14 22:20:46,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 708 transitions. [2019-10-14 22:20:46,622 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 708 transitions. Word has length 57 [2019-10-14 22:20:46,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:20:46,623 INFO L462 AbstractCegarLoop]: Abstraction has 581 states and 708 transitions. [2019-10-14 22:20:46,623 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-14 22:20:46,623 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 708 transitions. [2019-10-14 22:20:46,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-10-14 22:20:46,625 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:20:46,626 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-14 22:20:46,626 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:20:46,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:20:46,627 INFO L82 PathProgramCache]: Analyzing trace with hash -1685527750, now seen corresponding path program 1 times [2019-10-14 22:20:46,627 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:20:46,627 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44598245] [2019-10-14 22:20:46,628 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:20:46,628 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:20:46,628 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:20:46,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:47,111 WARN L191 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 238 [2019-10-14 22:20:47,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:47,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:47,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:47,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:47,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:47,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:47,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:47,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:47,300 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-14 22:20:47,300 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44598245] [2019-10-14 22:20:47,301 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 22:20:47,302 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-14 22:20:47,303 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437507679] [2019-10-14 22:20:47,304 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-14 22:20:47,305 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:20:47,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-14 22:20:47,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-10-14 22:20:47,305 INFO L87 Difference]: Start difference. First operand 581 states and 708 transitions. Second operand 7 states. [2019-10-14 22:20:47,680 WARN L191 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2019-10-14 22:20:48,134 WARN L191 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 243 [2019-10-14 22:20:48,591 WARN L191 SmtUtils]: Spent 394.00 ms on a formula simplification that was a NOOP. DAG size: 240 [2019-10-14 22:20:50,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:20:50,023 INFO L93 Difference]: Finished difference Result 685 states and 859 transitions. [2019-10-14 22:20:50,023 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-14 22:20:50,023 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 58 [2019-10-14 22:20:50,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:20:50,029 INFO L225 Difference]: With dead ends: 685 [2019-10-14 22:20:50,030 INFO L226 Difference]: Without dead ends: 682 [2019-10-14 22:20:50,031 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2019-10-14 22:20:50,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2019-10-14 22:20:50,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 580. [2019-10-14 22:20:50,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 580 states. [2019-10-14 22:20:50,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 706 transitions. [2019-10-14 22:20:50,143 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 706 transitions. Word has length 58 [2019-10-14 22:20:50,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:20:50,146 INFO L462 AbstractCegarLoop]: Abstraction has 580 states and 706 transitions. [2019-10-14 22:20:50,146 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-14 22:20:50,147 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 706 transitions. [2019-10-14 22:20:50,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-10-14 22:20:50,157 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:20:50,157 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-14 22:20:50,158 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:20:50,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:20:50,158 INFO L82 PathProgramCache]: Analyzing trace with hash -711922838, now seen corresponding path program 1 times [2019-10-14 22:20:50,160 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:20:50,160 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751139489] [2019-10-14 22:20:50,161 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:20:50,161 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:20:50,161 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:20:50,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:50,670 WARN L191 SmtUtils]: Spent 393.00 ms on a formula simplification that was a NOOP. DAG size: 238 [2019-10-14 22:20:50,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:50,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:50,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:50,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:50,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:50,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:50,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:50,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:50,826 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-14 22:20:50,826 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751139489] [2019-10-14 22:20:50,827 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 22:20:50,827 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-14 22:20:50,827 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920888991] [2019-10-14 22:20:50,828 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-14 22:20:50,828 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:20:50,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-14 22:20:50,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-10-14 22:20:50,829 INFO L87 Difference]: Start difference. First operand 580 states and 706 transitions. Second operand 7 states. [2019-10-14 22:20:51,183 WARN L191 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2019-10-14 22:20:51,617 WARN L191 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 243 [2019-10-14 22:20:52,034 WARN L191 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 240 [2019-10-14 22:20:53,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:20:53,400 INFO L93 Difference]: Finished difference Result 684 states and 857 transitions. [2019-10-14 22:20:53,400 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-14 22:20:53,401 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 59 [2019-10-14 22:20:53,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:20:53,406 INFO L225 Difference]: With dead ends: 684 [2019-10-14 22:20:53,406 INFO L226 Difference]: Without dead ends: 659 [2019-10-14 22:20:53,407 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2019-10-14 22:20:53,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2019-10-14 22:20:53,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 560. [2019-10-14 22:20:53,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 560 states. [2019-10-14 22:20:53,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 682 transitions. [2019-10-14 22:20:53,494 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 682 transitions. Word has length 59 [2019-10-14 22:20:53,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:20:53,494 INFO L462 AbstractCegarLoop]: Abstraction has 560 states and 682 transitions. [2019-10-14 22:20:53,494 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-14 22:20:53,494 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 682 transitions. [2019-10-14 22:20:53,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-10-14 22:20:53,497 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:20:53,497 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 22:20:53,497 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:20:53,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:20:53,498 INFO L82 PathProgramCache]: Analyzing trace with hash 1622077456, now seen corresponding path program 1 times [2019-10-14 22:20:53,498 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:20:53,498 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804457522] [2019-10-14 22:20:53,499 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:20:53,499 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:20:53,499 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:20:53,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:53,954 WARN L191 SmtUtils]: Spent 388.00 ms on a formula simplification that was a NOOP. DAG size: 238 [2019-10-14 22:20:53,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:53,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:53,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:54,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:54,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:54,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:54,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:54,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:54,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:54,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:54,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:54,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:54,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:54,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:54,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:54,178 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-14 22:20:54,179 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804457522] [2019-10-14 22:20:54,179 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 22:20:54,179 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-14 22:20:54,179 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397024273] [2019-10-14 22:20:54,180 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 22:20:54,180 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:20:54,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 22:20:54,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-10-14 22:20:54,181 INFO L87 Difference]: Start difference. First operand 560 states and 682 transitions. Second operand 9 states. [2019-10-14 22:20:54,547 WARN L191 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2019-10-14 22:20:54,995 WARN L191 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 243 [2019-10-14 22:20:55,498 WARN L191 SmtUtils]: Spent 395.00 ms on a formula simplification that was a NOOP. DAG size: 240 [2019-10-14 22:20:58,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:20:58,157 INFO L93 Difference]: Finished difference Result 1366 states and 1727 transitions. [2019-10-14 22:20:58,158 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-14 22:20:58,158 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 104 [2019-10-14 22:20:58,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:20:58,163 INFO L225 Difference]: With dead ends: 1366 [2019-10-14 22:20:58,163 INFO L226 Difference]: Without dead ends: 827 [2019-10-14 22:20:58,165 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=115, Invalid=227, Unknown=0, NotChecked=0, Total=342 [2019-10-14 22:20:58,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827 states. [2019-10-14 22:20:58,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 827 to 670. [2019-10-14 22:20:58,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 670 states. [2019-10-14 22:20:58,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 847 transitions. [2019-10-14 22:20:58,270 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 847 transitions. Word has length 104 [2019-10-14 22:20:58,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:20:58,271 INFO L462 AbstractCegarLoop]: Abstraction has 670 states and 847 transitions. [2019-10-14 22:20:58,271 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-14 22:20:58,271 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 847 transitions. [2019-10-14 22:20:58,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2019-10-14 22:20:58,274 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:20:58,275 INFO L380 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 22:20:58,275 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:20:58,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:20:58,276 INFO L82 PathProgramCache]: Analyzing trace with hash 2126022723, now seen corresponding path program 1 times [2019-10-14 22:20:58,276 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:20:58,276 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732283695] [2019-10-14 22:20:58,277 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:20:58,277 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:20:58,277 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:20:58,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat