/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_64.epf -i ../../../trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--usb--cdc_subset.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 15:13:20,363 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 15:13:20,365 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 15:13:20,385 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 15:13:20,386 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 15:13:20,387 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 15:13:20,389 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 15:13:20,400 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 15:13:20,404 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 15:13:20,407 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 15:13:20,410 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 15:13:20,412 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 15:13:20,412 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 15:13:20,414 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 15:13:20,416 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 15:13:20,417 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 15:13:20,419 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 15:13:20,421 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 15:13:20,422 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 15:13:20,427 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 15:13:20,432 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 15:13:20,437 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 15:13:20,438 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 15:13:20,439 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 15:13:20,441 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-07 15:13:20,442 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-07 15:13:20,442 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-07 15:13:20,444 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-07 15:13:20,445 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-07 15:13:20,446 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-07 15:13:20,446 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-07 15:13:20,447 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-07 15:13:20,448 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-07 15:13:20,448 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-07 15:13:20,449 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-07 15:13:20,450 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-07 15:13:20,450 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-07 15:13:20,450 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-07 15:13:20,451 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 15:13:20,452 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 15:13:20,453 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 15:13:20,454 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_64.epf [2020-07-07 15:13:20,484 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 15:13:20,485 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 15:13:20,488 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 15:13:20,488 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 15:13:20,489 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 15:13:20,489 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 15:13:20,489 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 15:13:20,489 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 15:13:20,489 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 15:13:20,490 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 15:13:20,490 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 15:13:20,490 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 15:13:20,493 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-07 15:13:20,493 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 15:13:20,494 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 15:13:20,494 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 15:13:20,494 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 15:13:20,494 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-07 15:13:20,494 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 15:13:20,495 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-07 15:13:20,799 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 15:13:20,812 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 15:13:20,815 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 15:13:20,817 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 15:13:20,817 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 15:13:20,818 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--usb--cdc_subset.ko-entry_point.cil.out.i [2020-07-07 15:13:20,878 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0e3a65a7/c9c8f4f6e7044269a974d3ecf5f8feec/FLAGceb4515a8 [2020-07-07 15:13:21,642 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 15:13:21,643 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--usb--cdc_subset.ko-entry_point.cil.out.i [2020-07-07 15:13:21,672 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0e3a65a7/c9c8f4f6e7044269a974d3ecf5f8feec/FLAGceb4515a8 [2020-07-07 15:13:21,715 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0e3a65a7/c9c8f4f6e7044269a974d3ecf5f8feec [2020-07-07 15:13:21,723 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 15:13:21,725 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 15:13:21,726 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 15:13:21,726 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 15:13:21,729 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 15:13:21,730 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 03:13:21" (1/1) ... [2020-07-07 15:13:21,733 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24720ca1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 03:13:21, skipping insertion in model container [2020-07-07 15:13:21,733 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 03:13:21" (1/1) ... [2020-07-07 15:13:21,741 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 15:13:21,846 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 15:13:23,058 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 15:13:23,115 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 15:13:23,345 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 15:13:23,438 INFO L208 MainTranslator]: Completed translation [2020-07-07 15:13:23,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 03:13:23 WrapperNode [2020-07-07 15:13:23,439 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 15:13:23,440 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 15:13:23,440 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 15:13:23,440 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 15:13:23,456 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 03:13:23" (1/1) ... [2020-07-07 15:13:23,456 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 03:13:23" (1/1) ... [2020-07-07 15:13:23,513 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 03:13:23" (1/1) ... [2020-07-07 15:13:23,514 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 03:13:23" (1/1) ... [2020-07-07 15:13:23,611 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 03:13:23" (1/1) ... [2020-07-07 15:13:23,640 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 03:13:23" (1/1) ... [2020-07-07 15:13:23,663 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 03:13:23" (1/1) ... [2020-07-07 15:13:23,687 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 15:13:23,688 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 15:13:23,688 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 15:13:23,693 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 15:13:23,695 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 03:13:23" (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 [2020-07-07 15:13:23,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 15:13:23,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 15:13:23,758 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-07 15:13:23,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-07-07 15:13:23,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-07-07 15:13:23,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2020-07-07 15:13:23,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2020-07-07 15:13:23,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-07-07 15:13:23,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-07-07 15:13:23,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-07-07 15:13:23,760 INFO L138 BoogieDeclarations]: Found implementation of procedure always_connected [2020-07-07 15:13:23,761 INFO L138 BoogieDeclarations]: Found implementation of procedure m5632_recover [2020-07-07 15:13:23,761 INFO L138 BoogieDeclarations]: Found implementation of procedure dummy_prereset [2020-07-07 15:13:23,761 INFO L138 BoogieDeclarations]: Found implementation of procedure dummy_postreset [2020-07-07 15:13:23,761 INFO L138 BoogieDeclarations]: Found implementation of procedure cdc_subset_driver_init [2020-07-07 15:13:23,761 INFO L138 BoogieDeclarations]: Found implementation of procedure cdc_subset_driver_exit [2020-07-07 15:13:23,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_driver_1 [2020-07-07 15:13:23,762 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 15:13:23,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_5 [2020-07-07 15:13:23,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_6 [2020-07-07 15:13:23,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_7 [2020-07-07 15:13:23,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_8 [2020-07-07 15:13:23,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_9 [2020-07-07 15:13:23,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_10 [2020-07-07 15:13:23,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_11 [2020-07-07 15:13:23,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_for_reset_12 [2020-07-07 15:13:23,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv___ldv_usb_unlock_device_13 [2020-07-07 15:13:23,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_register_driver_14 [2020-07-07 15:13:23,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_deregister_15 [2020-07-07 15:13:23,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-07-07 15:13:23,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int_negative [2020-07-07 15:13:23,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2020-07-07 15:13:23,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2020-07-07 15:13:23,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2020-07-07 15:13:23,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2020-07-07 15:13:23,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_i_mutex_of_inode [2020-07-07 15:13:23,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_killable_i_mutex_of_inode [2020-07-07 15:13:23,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_i_mutex_of_inode [2020-07-07 15:13:23,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_i_mutex_of_inode [2020-07-07 15:13:23,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_dec_and_mutex_lock_i_mutex_of_inode [2020-07-07 15:13:23,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_is_locked_i_mutex_of_inode [2020-07-07 15:13:23,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_i_mutex_of_inode [2020-07-07 15:13:23,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_i_mutex_of_inode [2020-07-07 15:13:23,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_trylock_device_i_mutex_of_inode [2020-07-07 15:13:23,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_for_reset_i_mutex_of_inode [2020-07-07 15:13:23,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_unlock_device_i_mutex_of_inode [2020-07-07 15:13:23,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_lock [2020-07-07 15:13:23,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_killable_lock [2020-07-07 15:13:23,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock [2020-07-07 15:13:23,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_lock [2020-07-07 15:13:23,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_dec_and_mutex_lock_lock [2020-07-07 15:13:23,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_is_locked_lock [2020-07-07 15:13:23,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock [2020-07-07 15:13:23,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_lock [2020-07-07 15:13:23,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_trylock_device_lock [2020-07-07 15:13:23,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_for_reset_lock [2020-07-07 15:13:23,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_unlock_device_lock [2020-07-07 15:13:23,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_mutex_of_device [2020-07-07 15:13:23,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_killable_mutex_of_device [2020-07-07 15:13:23,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex_of_device [2020-07-07 15:13:23,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_mutex_of_device [2020-07-07 15:13:23,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_dec_and_mutex_lock_mutex_of_device [2020-07-07 15:13:23,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_is_locked_mutex_of_device [2020-07-07 15:13:23,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex_of_device [2020-07-07 15:13:23,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_mutex_of_device [2020-07-07 15:13:23,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_trylock_device_mutex_of_device [2020-07-07 15:13:23,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_for_reset_mutex_of_device [2020-07-07 15:13:23,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_unlock_device_mutex_of_device [2020-07-07 15:13:23,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_udev [2020-07-07 15:13:23,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_killable_udev [2020-07-07 15:13:23,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_udev [2020-07-07 15:13:23,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_udev [2020-07-07 15:13:23,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_dec_and_mutex_lock_udev [2020-07-07 15:13:23,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_is_locked_udev [2020-07-07 15:13:23,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_udev [2020-07-07 15:13:23,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_udev [2020-07-07 15:13:23,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_trylock_device_udev [2020-07-07 15:13:23,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_for_reset_udev [2020-07-07 15:13:23,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_unlock_device_udev [2020-07-07 15:13:23,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-07-07 15:13:23,775 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_usb_unlock_device [2020-07-07 15:13:23,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-07-07 15:13:23,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_reset_resume_1 [2020-07-07 15:13:23,775 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2020-07-07 15:13:23,775 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_trylock [2020-07-07 15:13:23,775 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2020-07-07 15:13:23,776 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister [2020-07-07 15:13:23,776 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2020-07-07 15:13:23,776 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_reset_device [2020-07-07 15:13:23,776 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_disconnect [2020-07-07 15:13:23,776 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_probe [2020-07-07 15:13:23,777 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_resume [2020-07-07 15:13:23,777 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_suspend [2020-07-07 15:13:23,777 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-07-07 15:13:23,777 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2020-07-07 15:13:23,778 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-07-07 15:13:23,778 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 15:13:23,778 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2020-07-07 15:13:23,778 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_trylock [2020-07-07 15:13:23,778 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_8 [2020-07-07 15:13:23,778 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2020-07-07 15:13:23,779 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_6 [2020-07-07 15:13:23,779 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_9 [2020-07-07 15:13:23,779 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_10 [2020-07-07 15:13:23,779 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-07 15:13:23,779 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-07 15:13:23,780 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 15:13:23,780 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-07-07 15:13:23,780 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-07 15:13:23,780 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-07 15:13:23,780 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-07-07 15:13:23,780 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-07 15:13:23,781 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-07-07 15:13:23,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-07-07 15:13:23,781 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2020-07-07 15:13:23,781 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2020-07-07 15:13:23,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2020-07-07 15:13:23,781 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-07-07 15:13:23,782 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-07-07 15:13:23,782 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-07-07 15:13:23,782 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_usb_unlock_device [2020-07-07 15:13:23,782 INFO L130 BoogieDeclarations]: Found specification of procedure ldv___ldv_usb_unlock_device_13 [2020-07-07 15:13:23,782 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2020-07-07 15:13:23,782 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_5 [2020-07-07 15:13:23,783 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_7 [2020-07-07 15:13:23,783 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_11 [2020-07-07 15:13:23,783 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_i_mutex_of_inode [2020-07-07 15:13:23,783 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_i_mutex_of_inode [2020-07-07 15:13:23,783 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock [2020-07-07 15:13:23,784 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock [2020-07-07 15:13:23,784 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex_of_device [2020-07-07 15:13:23,784 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_mutex_of_device [2020-07-07 15:13:23,784 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex_of_device [2020-07-07 15:13:23,784 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_unlock_device_udev [2020-07-07 15:13:23,784 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_for_reset_udev [2020-07-07 15:13:23,785 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_driver_1 [2020-07-07 15:13:23,785 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_for_reset_12 [2020-07-07 15:13:23,785 INFO L130 BoogieDeclarations]: Found specification of procedure usb_reset_device [2020-07-07 15:13:23,785 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2020-07-07 15:13:23,785 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_register_driver_14 [2020-07-07 15:13:23,786 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2020-07-07 15:13:23,786 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_deregister_15 [2020-07-07 15:13:23,786 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_probe [2020-07-07 15:13:23,786 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_suspend [2020-07-07 15:13:23,786 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_resume [2020-07-07 15:13:23,786 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_disconnect [2020-07-07 15:13:23,787 INFO L130 BoogieDeclarations]: Found specification of procedure always_connected [2020-07-07 15:13:23,787 INFO L130 BoogieDeclarations]: Found specification of procedure m5632_recover [2020-07-07 15:13:23,787 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-07 15:13:23,787 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-07 15:13:23,788 INFO L130 BoogieDeclarations]: Found specification of procedure dummy_prereset [2020-07-07 15:13:23,788 INFO L130 BoogieDeclarations]: Found specification of procedure dummy_postreset [2020-07-07 15:13:23,788 INFO L130 BoogieDeclarations]: Found specification of procedure cdc_subset_driver_init [2020-07-07 15:13:23,788 INFO L130 BoogieDeclarations]: Found specification of procedure cdc_subset_driver_exit [2020-07-07 15:13:23,788 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-07-07 15:13:23,788 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_reset_resume_1 [2020-07-07 15:13:23,789 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-07-07 15:13:23,789 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 15:13:23,789 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-07 15:13:23,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-07 15:13:23,789 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-07-07 15:13:23,790 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int_negative [2020-07-07 15:13:23,790 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2020-07-07 15:13:23,790 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2020-07-07 15:13:23,790 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2020-07-07 15:13:23,790 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2020-07-07 15:13:23,790 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_i_mutex_of_inode [2020-07-07 15:13:23,791 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_killable_i_mutex_of_inode [2020-07-07 15:13:23,791 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_i_mutex_of_inode [2020-07-07 15:13:23,791 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_dec_and_mutex_lock_i_mutex_of_inode [2020-07-07 15:13:23,791 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_is_locked_i_mutex_of_inode [2020-07-07 15:13:23,791 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_i_mutex_of_inode [2020-07-07 15:13:23,791 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_trylock_device_i_mutex_of_inode [2020-07-07 15:13:23,792 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_for_reset_i_mutex_of_inode [2020-07-07 15:13:23,792 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_unlock_device_i_mutex_of_inode [2020-07-07 15:13:23,792 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_lock [2020-07-07 15:13:23,792 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_killable_lock [2020-07-07 15:13:23,792 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_lock [2020-07-07 15:13:23,792 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_dec_and_mutex_lock_lock [2020-07-07 15:13:23,793 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_is_locked_lock [2020-07-07 15:13:23,793 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_lock [2020-07-07 15:13:23,793 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_trylock_device_lock [2020-07-07 15:13:23,793 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_for_reset_lock [2020-07-07 15:13:23,793 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_unlock_device_lock [2020-07-07 15:13:23,793 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_mutex_of_device [2020-07-07 15:13:23,794 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_killable_mutex_of_device [2020-07-07 15:13:23,794 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_dec_and_mutex_lock_mutex_of_device [2020-07-07 15:13:23,794 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_is_locked_mutex_of_device [2020-07-07 15:13:23,794 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_mutex_of_device [2020-07-07 15:13:23,794 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_trylock_device_mutex_of_device [2020-07-07 15:13:23,794 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_for_reset_mutex_of_device [2020-07-07 15:13:23,795 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_unlock_device_mutex_of_device [2020-07-07 15:13:23,795 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_udev [2020-07-07 15:13:23,795 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_killable_udev [2020-07-07 15:13:23,795 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_udev [2020-07-07 15:13:23,795 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_udev [2020-07-07 15:13:23,796 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_dec_and_mutex_lock_udev [2020-07-07 15:13:23,796 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_is_locked_udev [2020-07-07 15:13:23,796 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_udev [2020-07-07 15:13:23,796 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_udev [2020-07-07 15:13:23,796 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_trylock_device_udev [2020-07-07 15:13:23,796 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-07 15:13:23,796 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-07-07 15:13:23,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 15:13:23,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-07 15:13:23,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-07-07 15:13:23,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 15:13:23,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-07 15:13:23,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-07 15:13:24,349 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-07-07 15:13:25,871 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 15:13:25,871 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-07 15:13:25,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 03:13:25 BoogieIcfgContainer [2020-07-07 15:13:25,900 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 15:13:25,901 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 15:13:25,901 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 15:13:25,906 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 15:13:25,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 03:13:21" (1/3) ... [2020-07-07 15:13:25,907 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14d51f80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 03:13:25, skipping insertion in model container [2020-07-07 15:13:25,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 03:13:23" (2/3) ... [2020-07-07 15:13:25,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14d51f80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 03:13:25, skipping insertion in model container [2020-07-07 15:13:25,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 03:13:25" (3/3) ... [2020-07-07 15:13:25,912 INFO L109 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--net--usb--cdc_subset.ko-entry_point.cil.out.i [2020-07-07 15:13:25,922 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-07 15:13:25,932 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 15:13:25,946 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 15:13:25,969 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 15:13:25,969 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 15:13:25,969 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-07 15:13:25,969 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 15:13:25,970 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 15:13:25,970 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 15:13:25,970 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 15:13:25,970 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 15:13:26,013 INFO L276 IsEmpty]: Start isEmpty. Operand 1443 states. [2020-07-07 15:13:26,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 852 [2020-07-07 15:13:26,077 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 15:13:26,079 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 15:13:26,080 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 15:13:26,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 15:13:26,087 INFO L82 PathProgramCache]: Analyzing trace with hash 942058458, now seen corresponding path program 1 times [2020-07-07 15:13:26,096 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 15:13:26,097 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1918175678] [2020-07-07 15:13:26,097 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 15:13:26,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:27,887 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-07-07 15:13:27,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:28,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:28,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:28,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:28,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:28,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:28,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:28,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:28,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:28,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:28,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:28,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:28,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:28,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:28,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:28,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:28,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:28,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:28,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:28,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:29,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:29,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:29,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:29,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:29,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:29,900 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2020-07-07 15:13:29,901 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 15:13:29,903 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1918175678] [2020-07-07 15:13:29,905 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 15:13:29,905 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-07 15:13:29,906 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691319503] [2020-07-07 15:13:29,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-07 15:13:29,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 15:13:29,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-07 15:13:29,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-07-07 15:13:29,942 INFO L87 Difference]: Start difference. First operand 1443 states. Second operand 8 states. [2020-07-07 15:13:30,325 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2020-07-07 15:13:35,287 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 243 [2020-07-07 15:13:36,651 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 234 [2020-07-07 15:13:38,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 15:13:38,775 INFO L93 Difference]: Finished difference Result 1915 states and 2170 transitions. [2020-07-07 15:13:38,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-07 15:13:38,777 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 851 [2020-07-07 15:13:38,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 15:13:38,813 INFO L225 Difference]: With dead ends: 1915 [2020-07-07 15:13:38,814 INFO L226 Difference]: Without dead ends: 1434 [2020-07-07 15:13:38,824 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2020-07-07 15:13:38,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1434 states. [2020-07-07 15:13:39,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1434 to 1384. [2020-07-07 15:13:39,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1384 states. [2020-07-07 15:13:39,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1384 states to 1384 states and 1494 transitions. [2020-07-07 15:13:39,158 INFO L78 Accepts]: Start accepts. Automaton has 1384 states and 1494 transitions. Word has length 851 [2020-07-07 15:13:39,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 15:13:39,161 INFO L479 AbstractCegarLoop]: Abstraction has 1384 states and 1494 transitions. [2020-07-07 15:13:39,161 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-07 15:13:39,161 INFO L276 IsEmpty]: Start isEmpty. Operand 1384 states and 1494 transitions. [2020-07-07 15:13:39,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 864 [2020-07-07 15:13:39,172 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 15:13:39,173 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 15:13:39,174 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 15:13:39,174 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 15:13:39,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 15:13:39,175 INFO L82 PathProgramCache]: Analyzing trace with hash -681597641, now seen corresponding path program 1 times [2020-07-07 15:13:39,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 15:13:39,175 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [913057093] [2020-07-07 15:13:39,176 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 15:13:39,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:40,058 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-07-07 15:13:40,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:40,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:40,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:40,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:40,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:40,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:40,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:40,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:40,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:40,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:40,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:40,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:40,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:40,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:40,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:40,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:40,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:40,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:40,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:40,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:40,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:40,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:40,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:41,313 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2020-07-07 15:13:41,313 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 15:13:41,314 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [913057093] [2020-07-07 15:13:41,314 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 15:13:41,314 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-07 15:13:41,315 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497400774] [2020-07-07 15:13:41,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-07 15:13:41,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 15:13:41,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-07 15:13:41,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-07 15:13:41,318 INFO L87 Difference]: Start difference. First operand 1384 states and 1494 transitions. Second operand 7 states. [2020-07-07 15:13:41,639 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2020-07-07 15:13:44,744 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 243 [2020-07-07 15:13:45,132 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 234 [2020-07-07 15:13:48,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 15:13:48,296 INFO L93 Difference]: Finished difference Result 2530 states and 2840 transitions. [2020-07-07 15:13:48,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-07 15:13:48,297 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 863 [2020-07-07 15:13:48,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 15:13:48,311 INFO L225 Difference]: With dead ends: 2530 [2020-07-07 15:13:48,311 INFO L226 Difference]: Without dead ends: 1875 [2020-07-07 15:13:48,316 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-07-07 15:13:48,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1875 states. [2020-07-07 15:13:48,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1875 to 1799. [2020-07-07 15:13:48,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1799 states. [2020-07-07 15:13:48,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1799 states to 1799 states and 1994 transitions. [2020-07-07 15:13:48,585 INFO L78 Accepts]: Start accepts. Automaton has 1799 states and 1994 transitions. Word has length 863 [2020-07-07 15:13:48,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 15:13:48,587 INFO L479 AbstractCegarLoop]: Abstraction has 1799 states and 1994 transitions. [2020-07-07 15:13:48,587 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-07 15:13:48,587 INFO L276 IsEmpty]: Start isEmpty. Operand 1799 states and 1994 transitions. [2020-07-07 15:13:48,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 905 [2020-07-07 15:13:48,597 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 15:13:48,597 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 15:13:48,598 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 15:13:48,598 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 15:13:48,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 15:13:48,599 INFO L82 PathProgramCache]: Analyzing trace with hash 1990549322, now seen corresponding path program 1 times [2020-07-07 15:13:48,599 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 15:13:48,599 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1725337110] [2020-07-07 15:13:48,599 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 15:13:48,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:49,539 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-07-07 15:13:49,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:50,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:50,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:50,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:50,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:50,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:50,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:50,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:50,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:50,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:50,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:50,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:50,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:50,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:50,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:50,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:50,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:50,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:50,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:50,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:50,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:50,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:50,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:50,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:50,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:50,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:50,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:50,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:50,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:51,061 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2020-07-07 15:13:51,061 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 15:13:51,062 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1725337110] [2020-07-07 15:13:51,062 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 15:13:51,062 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-07 15:13:51,062 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172073406] [2020-07-07 15:13:51,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-07 15:13:51,063 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 15:13:51,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-07 15:13:51,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-07-07 15:13:51,064 INFO L87 Difference]: Start difference. First operand 1799 states and 1994 transitions. Second operand 9 states. [2020-07-07 15:13:51,378 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2020-07-07 15:13:55,214 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 243 [2020-07-07 15:13:55,608 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 234 [2020-07-07 15:13:57,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 15:13:57,615 INFO L93 Difference]: Finished difference Result 1846 states and 2047 transitions. [2020-07-07 15:13:57,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-07 15:13:57,616 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 904 [2020-07-07 15:13:57,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 15:13:57,628 INFO L225 Difference]: With dead ends: 1846 [2020-07-07 15:13:57,628 INFO L226 Difference]: Without dead ends: 1843 [2020-07-07 15:13:57,629 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2020-07-07 15:13:57,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1843 states. [2020-07-07 15:13:57,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1843 to 1798. [2020-07-07 15:13:57,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1798 states. [2020-07-07 15:13:57,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1798 states to 1798 states and 1992 transitions. [2020-07-07 15:13:57,896 INFO L78 Accepts]: Start accepts. Automaton has 1798 states and 1992 transitions. Word has length 904 [2020-07-07 15:13:57,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 15:13:57,898 INFO L479 AbstractCegarLoop]: Abstraction has 1798 states and 1992 transitions. [2020-07-07 15:13:57,898 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-07 15:13:57,898 INFO L276 IsEmpty]: Start isEmpty. Operand 1798 states and 1992 transitions. [2020-07-07 15:13:57,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 906 [2020-07-07 15:13:57,909 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 15:13:57,911 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 15:13:57,911 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-07 15:13:57,911 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 15:13:57,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 15:13:57,912 INFO L82 PathProgramCache]: Analyzing trace with hash 1577298251, now seen corresponding path program 1 times [2020-07-07 15:13:57,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 15:13:57,914 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [228400980] [2020-07-07 15:13:57,914 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 15:13:58,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:58,835 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-07-07 15:13:58,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:59,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:59,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:59,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:59,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:59,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:59,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:59,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:59,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:59,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:59,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:59,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:59,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:59,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:59,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:59,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:59,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:59,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:59,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:59,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:59,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:59,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:59,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:59,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:59,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:59,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:59,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:59,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:13:59,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:14:00,084 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2020-07-07 15:14:00,085 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 15:14:00,085 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [228400980] [2020-07-07 15:14:00,085 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 15:14:00,086 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-07 15:14:00,086 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441133381] [2020-07-07 15:14:00,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-07 15:14:00,087 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 15:14:00,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-07 15:14:00,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-07-07 15:14:00,088 INFO L87 Difference]: Start difference. First operand 1798 states and 1992 transitions. Second operand 9 states. [2020-07-07 15:14:00,393 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2020-07-07 15:14:03,579 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 243 [2020-07-07 15:14:03,964 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 234 [2020-07-07 15:14:05,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 15:14:05,917 INFO L93 Difference]: Finished difference Result 1845 states and 2045 transitions. [2020-07-07 15:14:05,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-07 15:14:05,918 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 905 [2020-07-07 15:14:05,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 15:14:05,930 INFO L225 Difference]: With dead ends: 1845 [2020-07-07 15:14:05,930 INFO L226 Difference]: Without dead ends: 1842 [2020-07-07 15:14:05,933 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2020-07-07 15:14:05,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1842 states. [2020-07-07 15:14:06,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1842 to 1797. [2020-07-07 15:14:06,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1797 states. [2020-07-07 15:14:06,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1797 states to 1797 states and 1990 transitions. [2020-07-07 15:14:06,214 INFO L78 Accepts]: Start accepts. Automaton has 1797 states and 1990 transitions. Word has length 905 [2020-07-07 15:14:06,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 15:14:06,215 INFO L479 AbstractCegarLoop]: Abstraction has 1797 states and 1990 transitions. [2020-07-07 15:14:06,215 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-07 15:14:06,215 INFO L276 IsEmpty]: Start isEmpty. Operand 1797 states and 1990 transitions. [2020-07-07 15:14:06,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 907 [2020-07-07 15:14:06,225 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 15:14:06,226 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 15:14:06,226 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-07 15:14:06,227 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 15:14:06,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 15:14:06,227 INFO L82 PathProgramCache]: Analyzing trace with hash 1651421805, now seen corresponding path program 1 times [2020-07-07 15:14:06,227 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 15:14:06,228 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1533413084] [2020-07-07 15:14:06,228 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 15:14:06,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:14:06,992 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-07-07 15:14:07,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:14:07,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:14:07,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:14:07,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:14:07,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:14:07,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:14:07,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:14:07,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:14:07,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:14:07,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:14:07,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:14:07,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:14:07,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:14:07,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:14:07,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:14:07,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:14:07,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:14:07,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:14:07,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:14:07,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:14:07,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:14:07,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:14:07,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:14:07,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:14:07,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:14:07,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:14:07,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:14:07,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:14:07,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:14:08,333 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2020-07-07 15:14:08,334 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 15:14:08,334 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1533413084] [2020-07-07 15:14:08,334 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 15:14:08,335 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-07 15:14:08,335 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868613265] [2020-07-07 15:14:08,336 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-07 15:14:08,336 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 15:14:08,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-07 15:14:08,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-07-07 15:14:08,337 INFO L87 Difference]: Start difference. First operand 1797 states and 1990 transitions. Second operand 9 states. [2020-07-07 15:14:08,643 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2020-07-07 15:14:12,627 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 243 [2020-07-07 15:14:13,005 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 234 [2020-07-07 15:14:15,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 15:14:15,015 INFO L93 Difference]: Finished difference Result 1844 states and 2043 transitions. [2020-07-07 15:14:15,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-07 15:14:15,016 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 906 [2020-07-07 15:14:15,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 15:14:15,025 INFO L225 Difference]: With dead ends: 1844 [2020-07-07 15:14:15,025 INFO L226 Difference]: Without dead ends: 1841 [2020-07-07 15:14:15,027 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2020-07-07 15:14:15,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1841 states. [2020-07-07 15:14:15,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1841 to 1796. [2020-07-07 15:14:15,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1796 states. [2020-07-07 15:14:15,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1796 states to 1796 states and 1988 transitions. [2020-07-07 15:14:15,349 INFO L78 Accepts]: Start accepts. Automaton has 1796 states and 1988 transitions. Word has length 906 [2020-07-07 15:14:15,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 15:14:15,354 INFO L479 AbstractCegarLoop]: Abstraction has 1796 states and 1988 transitions. [2020-07-07 15:14:15,354 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-07 15:14:15,354 INFO L276 IsEmpty]: Start isEmpty. Operand 1796 states and 1988 transitions. [2020-07-07 15:14:15,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 908 [2020-07-07 15:14:15,370 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 15:14:15,371 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 15:14:15,371 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-07 15:14:15,372 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 15:14:15,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 15:14:15,372 INFO L82 PathProgramCache]: Analyzing trace with hash -345710450, now seen corresponding path program 1 times [2020-07-07 15:14:15,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 15:14:15,375 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [974962875] [2020-07-07 15:14:15,375 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 15:14:15,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:14:16,214 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-07-07 15:14:16,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:14:16,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:14:16,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:14:16,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:14:16,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:14:16,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:14:16,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:14:16,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:14:16,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:14:16,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:14:16,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:14:16,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:14:16,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:14:16,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:14:16,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:14:16,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:14:16,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:14:16,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:14:16,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:14:16,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:14:16,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:14:16,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:14:16,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:14:16,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:14:16,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:14:16,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:14:16,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:14:16,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:14:16,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:14:17,819 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2020-07-07 15:14:17,819 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 15:14:17,819 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [974962875] [2020-07-07 15:14:17,820 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 15:14:17,820 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-07 15:14:17,820 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095204022] [2020-07-07 15:14:17,821 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-07 15:14:17,821 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 15:14:17,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-07 15:14:17,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-07-07 15:14:17,822 INFO L87 Difference]: Start difference. First operand 1796 states and 1988 transitions. Second operand 9 states. [2020-07-07 15:14:18,126 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2020-07-07 15:14:21,249 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 243 [2020-07-07 15:14:21,621 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 234 [2020-07-07 15:14:24,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 15:14:24,995 INFO L93 Difference]: Finished difference Result 3955 states and 4544 transitions. [2020-07-07 15:14:24,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-07-07 15:14:24,995 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 907 [2020-07-07 15:14:24,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 15:14:25,010 INFO L225 Difference]: With dead ends: 3955 [2020-07-07 15:14:25,011 INFO L226 Difference]: Without dead ends: 2869 [2020-07-07 15:14:25,015 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2020-07-07 15:14:25,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2869 states. [2020-07-07 15:14:25,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2869 to 2830. [2020-07-07 15:14:25,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2830 states. [2020-07-07 15:14:25,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2830 states to 2830 states and 3212 transitions. [2020-07-07 15:14:25,499 INFO L78 Accepts]: Start accepts. Automaton has 2830 states and 3212 transitions. Word has length 907 [2020-07-07 15:14:25,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 15:14:25,500 INFO L479 AbstractCegarLoop]: Abstraction has 2830 states and 3212 transitions. [2020-07-07 15:14:25,500 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-07 15:14:25,500 INFO L276 IsEmpty]: Start isEmpty. Operand 2830 states and 3212 transitions. [2020-07-07 15:14:25,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 988 [2020-07-07 15:14:25,514 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 15:14:25,514 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 15:14:25,515 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-07 15:14:25,515 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 15:14:25,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 15:14:25,516 INFO L82 PathProgramCache]: Analyzing trace with hash 1265754919, now seen corresponding path program 1 times [2020-07-07 15:14:25,516 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 15:14:25,516 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [106465818] [2020-07-07 15:14:25,516 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 15:14:25,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:14:26,359 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-07-07 15:14:26,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:14:26,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:14:26,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:14:26,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:14:26,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:14:26,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:14:26,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:14:26,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:14:26,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:14:26,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:14:26,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:14:26,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:14:26,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:14:26,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:14:26,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:14:26,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:14:26,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:14:26,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:14:26,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:14:26,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:14:26,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:14:26,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:14:26,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:14:26,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:14:26,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:14:26,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:14:27,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:14:27,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:14:27,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:14:27,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:14:27,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:14:27,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:14:27,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:14:27,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:14:27,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 15:14:27,644 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2020-07-07 15:14:27,645 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 15:14:27,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [106465818] [2020-07-07 15:14:27,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 15:14:27,645 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-07-07 15:14:27,645 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779342652] [2020-07-07 15:14:27,646 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-07 15:14:27,646 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 15:14:27,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-07 15:14:27,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-07-07 15:14:27,647 INFO L87 Difference]: Start difference. First operand 2830 states and 3212 transitions. Second operand 10 states. [2020-07-07 15:14:27,949 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2020-07-07 15:14:33,049 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 243 [2020-07-07 15:14:33,973 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 234 [2020-07-07 15:14:34,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 15:14:34,927 INFO L93 Difference]: Finished difference Result 5567 states and 6535 transitions. [2020-07-07 15:14:34,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-07-07 15:14:34,928 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 987 [2020-07-07 15:14:34,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 15:14:34,945 INFO L225 Difference]: With dead ends: 5567 [2020-07-07 15:14:34,945 INFO L226 Difference]: Without dead ends: 3466 [2020-07-07 15:14:34,952 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 71 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=128, Invalid=292, Unknown=0, NotChecked=0, Total=420 [2020-07-07 15:14:34,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3466 states. [2020-07-07 15:14:35,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3466 to 2827. [2020-07-07 15:14:35,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2827 states. [2020-07-07 15:14:35,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2827 states to 2827 states and 3197 transitions. [2020-07-07 15:14:35,339 INFO L78 Accepts]: Start accepts. Automaton has 2827 states and 3197 transitions. Word has length 987 [2020-07-07 15:14:35,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 15:14:35,340 INFO L479 AbstractCegarLoop]: Abstraction has 2827 states and 3197 transitions. [2020-07-07 15:14:35,340 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-07 15:14:35,341 INFO L276 IsEmpty]: Start isEmpty. Operand 2827 states and 3197 transitions. [2020-07-07 15:14:35,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1004 [2020-07-07 15:14:35,355 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 15:14:35,355 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 15:14:35,356 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-07 15:14:35,356 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 15:14:35,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 15:14:35,357 INFO L82 PathProgramCache]: Analyzing trace with hash -814366023, now seen corresponding path program 1 times [2020-07-07 15:14:35,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 15:14:35,357 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [275835750] [2020-07-07 15:14:35,357 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 15:14:35,377 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-07 15:14:35,377 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.generateMetaTrace(AcceleratedInterpolation.java:442) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.acceleratedInterpolationCore(AcceleratedInterpolation.java:277) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:184) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:144) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:508) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-07-07 15:14:35,382 INFO L168 Benchmark]: Toolchain (without parser) took 73658.17 ms. Allocated memory was 142.6 MB in the beginning and 1.6 GB in the end (delta: 1.4 GB). Free memory was 94.1 MB in the beginning and 434.3 MB in the end (delta: -340.2 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2020-07-07 15:14:35,383 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 142.6 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-07 15:14:35,384 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1714.02 ms. Allocated memory was 142.6 MB in the beginning and 227.0 MB in the end (delta: 84.4 MB). Free memory was 93.9 MB in the beginning and 114.4 MB in the end (delta: -20.5 MB). Peak memory consumption was 75.5 MB. Max. memory is 7.1 GB. [2020-07-07 15:14:35,385 INFO L168 Benchmark]: Boogie Preprocessor took 247.61 ms. Allocated memory is still 227.0 MB. Free memory was 114.4 MB in the beginning and 101.1 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. [2020-07-07 15:14:35,386 INFO L168 Benchmark]: RCFGBuilder took 2211.97 ms. Allocated memory was 227.0 MB in the beginning and 270.5 MB in the end (delta: 43.5 MB). Free memory was 101.1 MB in the beginning and 113.7 MB in the end (delta: -12.6 MB). Peak memory consumption was 71.2 MB. Max. memory is 7.1 GB. [2020-07-07 15:14:35,386 INFO L168 Benchmark]: TraceAbstraction took 69479.89 ms. Allocated memory was 270.5 MB in the beginning and 1.6 GB in the end (delta: 1.3 GB). Free memory was 113.7 MB in the beginning and 434.3 MB in the end (delta: -320.6 MB). Peak memory consumption was 962.3 MB. Max. memory is 7.1 GB. [2020-07-07 15:14:35,390 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 142.6 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1714.02 ms. Allocated memory was 142.6 MB in the beginning and 227.0 MB in the end (delta: 84.4 MB). Free memory was 93.9 MB in the beginning and 114.4 MB in the end (delta: -20.5 MB). Peak memory consumption was 75.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 247.61 ms. Allocated memory is still 227.0 MB. Free memory was 114.4 MB in the beginning and 101.1 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 2211.97 ms. Allocated memory was 227.0 MB in the beginning and 270.5 MB in the end (delta: 43.5 MB). Free memory was 101.1 MB in the beginning and 113.7 MB in the end (delta: -12.6 MB). Peak memory consumption was 71.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 69479.89 ms. Allocated memory was 270.5 MB in the beginning and 1.6 GB in the end (delta: 1.3 GB). Free memory was 113.7 MB in the beginning and 434.3 MB in the end (delta: -320.6 MB). Peak memory consumption was 962.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.generateMetaTrace(AcceleratedInterpolation.java:442) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...