/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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 0.2.0-b8ad66e [2020-10-23 23:28:28,336 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 23:28:28,339 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 23:28:28,384 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 23:28:28,385 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 23:28:28,389 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 23:28:28,392 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 23:28:28,399 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 23:28:28,402 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 23:28:28,408 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 23:28:28,410 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 23:28:28,411 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 23:28:28,411 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 23:28:28,414 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 23:28:28,415 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 23:28:28,417 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 23:28:28,418 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 23:28:28,421 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 23:28:28,427 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 23:28:28,431 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 23:28:28,433 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 23:28:28,438 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 23:28:28,439 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 23:28:28,440 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 23:28:28,442 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 23:28:28,443 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 23:28:28,443 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 23:28:28,444 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 23:28:28,445 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 23:28:28,446 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 23:28:28,446 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 23:28:28,447 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 23:28:28,448 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 23:28:28,448 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 23:28:28,449 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 23:28:28,450 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 23:28:28,450 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 23:28:28,451 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 23:28:28,451 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 23:28:28,452 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 23:28:28,453 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 23:28:28,454 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_64.epf [2020-10-23 23:28:28,467 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 23:28:28,467 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 23:28:28,469 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 23:28:28,469 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 23:28:28,469 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 23:28:28,469 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 23:28:28,469 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 23:28:28,470 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 23:28:28,470 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 23:28:28,470 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 23:28:28,470 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 23:28:28,470 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 23:28:28,471 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 23:28:28,471 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 23:28:28,471 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 23:28:28,471 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 23:28:28,471 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 23:28:28,472 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 23:28:28,472 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 23:28:28,472 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 23:28:28,910 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 23:28:28,938 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 23:28:28,947 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 23:28:28,948 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 23:28:28,950 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 23:28:28,951 INFO L432 ainManager$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 [2020-10-23 23:28:29,042 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22ebb509e/1edf12f74bd54354a52466b791dd5ce9/FLAG96ffac4b1 [2020-10-23 23:28:29,975 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 23:28:29,976 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 [2020-10-23 23:28:30,029 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22ebb509e/1edf12f74bd54354a52466b791dd5ce9/FLAG96ffac4b1 [2020-10-23 23:28:30,443 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22ebb509e/1edf12f74bd54354a52466b791dd5ce9 [2020-10-23 23:28:30,446 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 23:28:30,452 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 23:28:30,453 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 23:28:30,454 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 23:28:30,457 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 23:28:30,458 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 11:28:30" (1/1) ... [2020-10-23 23:28:30,462 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c3652a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:28:30, skipping insertion in model container [2020-10-23 23:28:30,462 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 11:28:30" (1/1) ... [2020-10-23 23:28:30,470 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 23:28:30,597 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 23:28:31,636 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 23:28:31,678 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 23:28:31,971 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 23:28:32,115 INFO L208 MainTranslator]: Completed translation [2020-10-23 23:28:32,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:28:32 WrapperNode [2020-10-23 23:28:32,116 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 23:28:32,117 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 23:28:32,117 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 23:28:32,117 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 23:28:32,131 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:28:32" (1/1) ... [2020-10-23 23:28:32,132 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:28:32" (1/1) ... [2020-10-23 23:28:32,209 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:28:32" (1/1) ... [2020-10-23 23:28:32,210 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:28:32" (1/1) ... [2020-10-23 23:28:32,351 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:28:32" (1/1) ... [2020-10-23 23:28:32,376 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:28:32" (1/1) ... [2020-10-23 23:28:32,399 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:28:32" (1/1) ... [2020-10-23 23:28:32,420 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 23:28:32,424 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 23:28:32,424 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 23:28:32,424 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 23:28:32,426 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:28:32" (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 [2020-10-23 23:28:32,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 23:28:32,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 23:28:32,527 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 23:28:32,528 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-23 23:28:32,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-10-23 23:28:32,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-10-23 23:28:32,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2020-10-23 23:28:32,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2020-10-23 23:28:32,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-10-23 23:28:32,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-10-23 23:28:32,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-10-23 23:28:32,530 INFO L138 BoogieDeclarations]: Found implementation of procedure always_connected [2020-10-23 23:28:32,531 INFO L138 BoogieDeclarations]: Found implementation of procedure m5632_recover [2020-10-23 23:28:32,531 INFO L138 BoogieDeclarations]: Found implementation of procedure dummy_prereset [2020-10-23 23:28:32,531 INFO L138 BoogieDeclarations]: Found implementation of procedure dummy_postreset [2020-10-23 23:28:32,531 INFO L138 BoogieDeclarations]: Found implementation of procedure cdc_subset_driver_init [2020-10-23 23:28:32,532 INFO L138 BoogieDeclarations]: Found implementation of procedure cdc_subset_driver_exit [2020-10-23 23:28:32,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_driver_1 [2020-10-23 23:28:32,532 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 23:28:32,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_5 [2020-10-23 23:28:32,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_6 [2020-10-23 23:28:32,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_7 [2020-10-23 23:28:32,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_8 [2020-10-23 23:28:32,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_9 [2020-10-23 23:28:32,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_10 [2020-10-23 23:28:32,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_11 [2020-10-23 23:28:32,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_for_reset_12 [2020-10-23 23:28:32,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv___ldv_usb_unlock_device_13 [2020-10-23 23:28:32,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_register_driver_14 [2020-10-23 23:28:32,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_deregister_15 [2020-10-23 23:28:32,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-10-23 23:28:32,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int_negative [2020-10-23 23:28:32,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2020-10-23 23:28:32,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2020-10-23 23:28:32,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2020-10-23 23:28:32,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2020-10-23 23:28:32,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_i_mutex_of_inode [2020-10-23 23:28:32,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_killable_i_mutex_of_inode [2020-10-23 23:28:32,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_i_mutex_of_inode [2020-10-23 23:28:32,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_i_mutex_of_inode [2020-10-23 23:28:32,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_dec_and_mutex_lock_i_mutex_of_inode [2020-10-23 23:28:32,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_is_locked_i_mutex_of_inode [2020-10-23 23:28:32,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_i_mutex_of_inode [2020-10-23 23:28:32,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_i_mutex_of_inode [2020-10-23 23:28:32,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_trylock_device_i_mutex_of_inode [2020-10-23 23:28:32,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_for_reset_i_mutex_of_inode [2020-10-23 23:28:32,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_unlock_device_i_mutex_of_inode [2020-10-23 23:28:32,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_lock [2020-10-23 23:28:32,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_killable_lock [2020-10-23 23:28:32,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock [2020-10-23 23:28:32,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_lock [2020-10-23 23:28:32,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_dec_and_mutex_lock_lock [2020-10-23 23:28:32,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_is_locked_lock [2020-10-23 23:28:32,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock [2020-10-23 23:28:32,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_lock [2020-10-23 23:28:32,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_trylock_device_lock [2020-10-23 23:28:32,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_for_reset_lock [2020-10-23 23:28:32,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_unlock_device_lock [2020-10-23 23:28:32,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_mutex_of_device [2020-10-23 23:28:32,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_killable_mutex_of_device [2020-10-23 23:28:32,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex_of_device [2020-10-23 23:28:32,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_mutex_of_device [2020-10-23 23:28:32,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_dec_and_mutex_lock_mutex_of_device [2020-10-23 23:28:32,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_is_locked_mutex_of_device [2020-10-23 23:28:32,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex_of_device [2020-10-23 23:28:32,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_mutex_of_device [2020-10-23 23:28:32,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_trylock_device_mutex_of_device [2020-10-23 23:28:32,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_for_reset_mutex_of_device [2020-10-23 23:28:32,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_unlock_device_mutex_of_device [2020-10-23 23:28:32,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_udev [2020-10-23 23:28:32,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_killable_udev [2020-10-23 23:28:32,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_udev [2020-10-23 23:28:32,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_udev [2020-10-23 23:28:32,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_dec_and_mutex_lock_udev [2020-10-23 23:28:32,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_is_locked_udev [2020-10-23 23:28:32,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_udev [2020-10-23 23:28:32,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_udev [2020-10-23 23:28:32,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_trylock_device_udev [2020-10-23 23:28:32,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_for_reset_udev [2020-10-23 23:28:32,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_unlock_device_udev [2020-10-23 23:28:32,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-10-23 23:28:32,545 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_usb_unlock_device [2020-10-23 23:28:32,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-10-23 23:28:32,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_reset_resume_1 [2020-10-23 23:28:32,546 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2020-10-23 23:28:32,546 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_trylock [2020-10-23 23:28:32,546 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2020-10-23 23:28:32,547 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister [2020-10-23 23:28:32,547 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2020-10-23 23:28:32,548 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_reset_device [2020-10-23 23:28:32,548 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_disconnect [2020-10-23 23:28:32,548 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_probe [2020-10-23 23:28:32,548 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_resume [2020-10-23 23:28:32,548 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_suspend [2020-10-23 23:28:32,548 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-10-23 23:28:32,549 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2020-10-23 23:28:32,550 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-23 23:28:32,551 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 23:28:32,551 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 23:28:32,552 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-23 23:28:32,552 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-23 23:28:32,552 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 23:28:32,552 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 23:28:32,552 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2020-10-23 23:28:32,552 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_trylock [2020-10-23 23:28:32,552 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_8 [2020-10-23 23:28:32,553 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2020-10-23 23:28:32,553 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_6 [2020-10-23 23:28:32,553 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_9 [2020-10-23 23:28:32,553 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_10 [2020-10-23 23:28:32,553 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 23:28:32,553 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-23 23:28:32,553 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 23:28:32,554 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-10-23 23:28:32,554 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-23 23:28:32,554 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-10-23 23:28:32,555 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 23:28:32,555 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-10-23 23:28:32,555 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-23 23:28:32,555 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2020-10-23 23:28:32,556 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2020-10-23 23:28:32,556 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2020-10-23 23:28:32,556 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-10-23 23:28:32,556 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-10-23 23:28:32,557 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-10-23 23:28:32,557 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_usb_unlock_device [2020-10-23 23:28:32,557 INFO L130 BoogieDeclarations]: Found specification of procedure ldv___ldv_usb_unlock_device_13 [2020-10-23 23:28:32,557 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2020-10-23 23:28:32,558 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_5 [2020-10-23 23:28:32,558 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_7 [2020-10-23 23:28:32,558 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_11 [2020-10-23 23:28:32,559 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_i_mutex_of_inode [2020-10-23 23:28:32,559 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_i_mutex_of_inode [2020-10-23 23:28:32,560 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock [2020-10-23 23:28:32,560 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock [2020-10-23 23:28:32,560 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex_of_device [2020-10-23 23:28:32,560 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_mutex_of_device [2020-10-23 23:28:32,560 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex_of_device [2020-10-23 23:28:32,561 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_unlock_device_udev [2020-10-23 23:28:32,561 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_for_reset_udev [2020-10-23 23:28:32,561 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_driver_1 [2020-10-23 23:28:32,561 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_for_reset_12 [2020-10-23 23:28:32,562 INFO L130 BoogieDeclarations]: Found specification of procedure usb_reset_device [2020-10-23 23:28:32,562 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2020-10-23 23:28:32,562 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_register_driver_14 [2020-10-23 23:28:32,562 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2020-10-23 23:28:32,562 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_deregister_15 [2020-10-23 23:28:32,563 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_probe [2020-10-23 23:28:32,565 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_suspend [2020-10-23 23:28:32,569 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_resume [2020-10-23 23:28:32,570 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_disconnect [2020-10-23 23:28:32,570 INFO L130 BoogieDeclarations]: Found specification of procedure always_connected [2020-10-23 23:28:32,570 INFO L130 BoogieDeclarations]: Found specification of procedure m5632_recover [2020-10-23 23:28:32,574 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-23 23:28:32,574 INFO L130 BoogieDeclarations]: Found specification of procedure dummy_prereset [2020-10-23 23:28:32,574 INFO L130 BoogieDeclarations]: Found specification of procedure dummy_postreset [2020-10-23 23:28:32,575 INFO L130 BoogieDeclarations]: Found specification of procedure cdc_subset_driver_init [2020-10-23 23:28:32,575 INFO L130 BoogieDeclarations]: Found specification of procedure cdc_subset_driver_exit [2020-10-23 23:28:32,575 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-10-23 23:28:32,576 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_reset_resume_1 [2020-10-23 23:28:32,576 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-10-23 23:28:32,576 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 23:28:32,577 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 23:28:32,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 23:28:32,577 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-10-23 23:28:32,577 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int_negative [2020-10-23 23:28:32,577 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2020-10-23 23:28:32,577 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2020-10-23 23:28:32,578 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2020-10-23 23:28:32,578 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2020-10-23 23:28:32,578 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_i_mutex_of_inode [2020-10-23 23:28:32,578 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_killable_i_mutex_of_inode [2020-10-23 23:28:32,578 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_i_mutex_of_inode [2020-10-23 23:28:32,578 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_dec_and_mutex_lock_i_mutex_of_inode [2020-10-23 23:28:32,579 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_is_locked_i_mutex_of_inode [2020-10-23 23:28:32,579 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_i_mutex_of_inode [2020-10-23 23:28:32,579 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_trylock_device_i_mutex_of_inode [2020-10-23 23:28:32,579 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_for_reset_i_mutex_of_inode [2020-10-23 23:28:32,579 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_unlock_device_i_mutex_of_inode [2020-10-23 23:28:32,579 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_lock [2020-10-23 23:28:32,580 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_killable_lock [2020-10-23 23:28:32,580 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_lock [2020-10-23 23:28:32,580 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_dec_and_mutex_lock_lock [2020-10-23 23:28:32,580 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_is_locked_lock [2020-10-23 23:28:32,580 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_lock [2020-10-23 23:28:32,580 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_trylock_device_lock [2020-10-23 23:28:32,580 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_for_reset_lock [2020-10-23 23:28:32,581 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_unlock_device_lock [2020-10-23 23:28:32,581 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_mutex_of_device [2020-10-23 23:28:32,581 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_killable_mutex_of_device [2020-10-23 23:28:32,581 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_dec_and_mutex_lock_mutex_of_device [2020-10-23 23:28:32,581 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_is_locked_mutex_of_device [2020-10-23 23:28:32,581 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_mutex_of_device [2020-10-23 23:28:32,582 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_trylock_device_mutex_of_device [2020-10-23 23:28:32,582 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_for_reset_mutex_of_device [2020-10-23 23:28:32,582 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_unlock_device_mutex_of_device [2020-10-23 23:28:32,582 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_udev [2020-10-23 23:28:32,582 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_killable_udev [2020-10-23 23:28:32,582 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_udev [2020-10-23 23:28:32,582 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_udev [2020-10-23 23:28:32,583 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_dec_and_mutex_lock_udev [2020-10-23 23:28:32,583 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_is_locked_udev [2020-10-23 23:28:32,583 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_udev [2020-10-23 23:28:32,583 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_udev [2020-10-23 23:28:32,583 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_trylock_device_udev [2020-10-23 23:28:32,583 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-23 23:28:32,583 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-10-23 23:28:32,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 23:28:32,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 23:28:32,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-23 23:28:32,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 23:28:32,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-23 23:28:32,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 23:28:33,232 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-10-23 23:28:35,145 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 23:28:35,145 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-23 23:28:35,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 11:28:35 BoogieIcfgContainer [2020-10-23 23:28:35,151 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 23:28:35,154 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 23:28:35,154 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 23:28:35,158 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 23:28:35,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 11:28:30" (1/3) ... [2020-10-23 23:28:35,159 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@548838c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 11:28:35, skipping insertion in model container [2020-10-23 23:28:35,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:28:32" (2/3) ... [2020-10-23 23:28:35,159 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@548838c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 11:28:35, skipping insertion in model container [2020-10-23 23:28:35,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 11:28:35" (3/3) ... [2020-10-23 23:28:35,161 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--net--usb--cdc_subset.ko-entry_point.cil.out.i [2020-10-23 23:28:35,173 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 23:28:35,179 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 23:28:35,190 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 23:28:35,215 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 23:28:35,215 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 23:28:35,215 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 23:28:35,215 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 23:28:35,215 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 23:28:35,215 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 23:28:35,216 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 23:28:35,216 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 23:28:35,252 INFO L276 IsEmpty]: Start isEmpty. Operand 1452 states. [2020-10-23 23:28:35,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 858 [2020-10-23 23:28:35,311 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 23:28:35,313 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] [2020-10-23 23:28:35,313 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 23:28:35,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 23:28:35,320 INFO L82 PathProgramCache]: Analyzing trace with hash -311433243, now seen corresponding path program 1 times [2020-10-23 23:28:35,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 23:28:35,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [908611136] [2020-10-23 23:28:35,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 23:28:35,453 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 23:28:35,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:28:37,012 WARN L193 SmtUtils]: Spent 567.00 ms on a formula simplification that was a NOOP. DAG size: 244 [2020-10-23 23:28:37,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 23:28:37,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:28:37,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 661 [2020-10-23 23:28:37,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:28:37,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 23:28:37,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:28:37,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 23:28:37,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:28:37,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 683 [2020-10-23 23:28:37,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:28:37,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 23:28:37,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:28:37,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 23:28:37,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:28:37,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 705 [2020-10-23 23:28:37,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:28:37,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 23:28:37,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:28:38,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 23:28:38,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:28:38,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 727 [2020-10-23 23:28:38,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:28:38,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 23:28:38,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:28:38,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 23:28:38,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:28:38,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 749 [2020-10-23 23:28:38,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:28:38,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 23:28:38,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:28:38,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 23:28:38,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:28:38,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 771 [2020-10-23 23:28:38,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:28:38,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 23:28:38,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:28:38,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 23:28:38,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:28:38,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 793 [2020-10-23 23:28:38,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:28:38,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 796 [2020-10-23 23:28:38,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:28:38,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 23:28:38,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:28:38,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 838 [2020-10-23 23:28:38,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:28:38,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 23:28:38,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:28:38,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 23:28:38,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:28:39,015 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2020-10-23 23:28:39,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [908611136] [2020-10-23 23:28:39,018 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 23:28:39,019 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-23 23:28:39,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978777926] [2020-10-23 23:28:39,026 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-23 23:28:39,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 23:28:39,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-23 23:28:39,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-23 23:28:39,043 INFO L87 Difference]: Start difference. First operand 1452 states. Second operand 8 states. [2020-10-23 23:28:39,583 WARN L193 SmtUtils]: Spent 486.00 ms on a formula simplification that was a NOOP. DAG size: 253 [2020-10-23 23:28:45,065 WARN L193 SmtUtils]: Spent 449.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-23 23:28:45,899 WARN L193 SmtUtils]: Spent 503.00 ms on a formula simplification that was a NOOP. DAG size: 255 [2020-10-23 23:28:47,437 WARN L193 SmtUtils]: Spent 468.00 ms on a formula simplification that was a NOOP. DAG size: 246 [2020-10-23 23:28:50,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 23:28:50,099 INFO L93 Difference]: Finished difference Result 1929 states and 2189 transitions. [2020-10-23 23:28:50,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-23 23:28:50,102 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 857 [2020-10-23 23:28:50,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 23:28:50,154 INFO L225 Difference]: With dead ends: 1929 [2020-10-23 23:28:50,154 INFO L226 Difference]: Without dead ends: 1443 [2020-10-23 23:28:50,169 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=107, Invalid=235, Unknown=0, NotChecked=0, Total=342 [2020-10-23 23:28:50,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1443 states. [2020-10-23 23:28:50,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1443 to 1390. [2020-10-23 23:28:50,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1390 states. [2020-10-23 23:28:50,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1390 states to 1390 states and 1500 transitions. [2020-10-23 23:28:50,572 INFO L78 Accepts]: Start accepts. Automaton has 1390 states and 1500 transitions. Word has length 857 [2020-10-23 23:28:50,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 23:28:50,575 INFO L481 AbstractCegarLoop]: Abstraction has 1390 states and 1500 transitions. [2020-10-23 23:28:50,575 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-23 23:28:50,575 INFO L276 IsEmpty]: Start isEmpty. Operand 1390 states and 1500 transitions. [2020-10-23 23:28:50,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 870 [2020-10-23 23:28:50,610 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 23:28:50,611 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, 1, 1, 1, 1, 1, 1] [2020-10-23 23:28:50,612 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 23:28:50,612 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 23:28:50,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 23:28:50,613 INFO L82 PathProgramCache]: Analyzing trace with hash 1929947018, now seen corresponding path program 1 times [2020-10-23 23:28:50,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 23:28:50,614 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [598506682] [2020-10-23 23:28:50,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 23:28:50,642 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 23:28:50,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:28:51,444 WARN L193 SmtUtils]: Spent 429.00 ms on a formula simplification that was a NOOP. DAG size: 244 [2020-10-23 23:28:51,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 23:28:51,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:28:51,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 661 [2020-10-23 23:28:51,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:28:51,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 23:28:51,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:28:51,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 23:28:51,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:28:51,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 683 [2020-10-23 23:28:51,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:28:51,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 23:28:51,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:28:51,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 23:28:51,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:28:51,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 705 [2020-10-23 23:28:51,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:28:51,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 23:28:51,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:28:51,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 23:28:51,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:28:52,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 727 [2020-10-23 23:28:52,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:28:52,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 23:28:52,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:28:52,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 23:28:52,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:28:52,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 749 [2020-10-23 23:28:52,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:28:52,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 23:28:52,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:28:52,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 23:28:52,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:28:52,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 771 [2020-10-23 23:28:52,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:28:52,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 23:28:52,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:28:52,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 23:28:52,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:28:52,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 793 [2020-10-23 23:28:52,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:28:52,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 796 [2020-10-23 23:28:52,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:28:52,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 23:28:52,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:28:52,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 850 [2020-10-23 23:28:52,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:28:52,671 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2020-10-23 23:28:52,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [598506682] [2020-10-23 23:28:52,672 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 23:28:52,672 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-23 23:28:52,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547183159] [2020-10-23 23:28:52,675 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-23 23:28:52,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 23:28:52,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-23 23:28:52,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-23 23:28:52,676 INFO L87 Difference]: Start difference. First operand 1390 states and 1500 transitions. Second operand 7 states. [2020-10-23 23:28:53,161 WARN L193 SmtUtils]: Spent 470.00 ms on a formula simplification that was a NOOP. DAG size: 253 [2020-10-23 23:28:56,915 WARN L193 SmtUtils]: Spent 481.00 ms on a formula simplification that was a NOOP. DAG size: 255 [2020-10-23 23:28:57,462 WARN L193 SmtUtils]: Spent 444.00 ms on a formula simplification that was a NOOP. DAG size: 246 [2020-10-23 23:28:58,255 WARN L193 SmtUtils]: Spent 468.00 ms on a formula simplification that was a NOOP. DAG size: 249 [2020-10-23 23:29:01,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 23:29:01,779 INFO L93 Difference]: Finished difference Result 2541 states and 2851 transitions. [2020-10-23 23:29:01,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-23 23:29:01,780 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 869 [2020-10-23 23:29:01,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 23:29:01,796 INFO L225 Difference]: With dead ends: 2541 [2020-10-23 23:29:01,796 INFO L226 Difference]: Without dead ends: 1884 [2020-10-23 23:29:01,800 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-10-23 23:29:01,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1884 states. [2020-10-23 23:29:02,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1884 to 1805. [2020-10-23 23:29:02,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1805 states. [2020-10-23 23:29:02,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1805 states to 1805 states and 2000 transitions. [2020-10-23 23:29:02,148 INFO L78 Accepts]: Start accepts. Automaton has 1805 states and 2000 transitions. Word has length 869 [2020-10-23 23:29:02,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 23:29:02,149 INFO L481 AbstractCegarLoop]: Abstraction has 1805 states and 2000 transitions. [2020-10-23 23:29:02,149 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-23 23:29:02,150 INFO L276 IsEmpty]: Start isEmpty. Operand 1805 states and 2000 transitions. [2020-10-23 23:29:02,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 911 [2020-10-23 23:29:02,189 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 23:29:02,189 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, 1, 1, 1] [2020-10-23 23:29:02,190 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 23:29:02,190 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 23:29:02,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 23:29:02,191 INFO L82 PathProgramCache]: Analyzing trace with hash 802120228, now seen corresponding path program 1 times [2020-10-23 23:29:02,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 23:29:02,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2074838406] [2020-10-23 23:29:02,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 23:29:02,217 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 23:29:02,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:03,097 WARN L193 SmtUtils]: Spent 455.00 ms on a formula simplification that was a NOOP. DAG size: 244 [2020-10-23 23:29:03,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 23:29:03,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:03,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 661 [2020-10-23 23:29:03,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:03,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 23:29:03,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:03,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 23:29:03,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:03,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 683 [2020-10-23 23:29:03,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:03,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 23:29:03,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:03,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 23:29:03,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:03,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 705 [2020-10-23 23:29:03,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:03,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 23:29:03,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:03,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 23:29:03,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:03,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 727 [2020-10-23 23:29:03,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:03,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 23:29:03,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:03,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 23:29:03,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:03,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 749 [2020-10-23 23:29:03,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:03,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 23:29:03,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:03,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 23:29:03,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:03,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 771 [2020-10-23 23:29:03,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:03,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 23:29:03,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:03,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 23:29:03,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:03,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 793 [2020-10-23 23:29:03,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:03,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 796 [2020-10-23 23:29:03,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:03,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 23:29:03,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:03,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 840 [2020-10-23 23:29:03,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:03,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 23:29:03,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:03,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-23 23:29:03,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:03,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-23 23:29:03,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:03,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 23:29:03,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:03,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 23:29:03,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:03,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 23:29:03,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:04,492 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2020-10-23 23:29:04,493 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2074838406] [2020-10-23 23:29:04,493 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 23:29:04,493 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-23 23:29:04,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012109940] [2020-10-23 23:29:04,494 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-23 23:29:04,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 23:29:04,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-23 23:29:04,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-23 23:29:04,495 INFO L87 Difference]: Start difference. First operand 1805 states and 2000 transitions. Second operand 9 states. [2020-10-23 23:29:04,968 WARN L193 SmtUtils]: Spent 457.00 ms on a formula simplification that was a NOOP. DAG size: 253 [2020-10-23 23:29:08,939 WARN L193 SmtUtils]: Spent 469.00 ms on a formula simplification that was a NOOP. DAG size: 255 [2020-10-23 23:29:09,487 WARN L193 SmtUtils]: Spent 447.00 ms on a formula simplification that was a NOOP. DAG size: 246 [2020-10-23 23:29:10,272 WARN L193 SmtUtils]: Spent 466.00 ms on a formula simplification that was a NOOP. DAG size: 249 [2020-10-23 23:29:12,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 23:29:12,518 INFO L93 Difference]: Finished difference Result 1855 states and 2056 transitions. [2020-10-23 23:29:12,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-23 23:29:12,520 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 910 [2020-10-23 23:29:12,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 23:29:12,534 INFO L225 Difference]: With dead ends: 1855 [2020-10-23 23:29:12,534 INFO L226 Difference]: Without dead ends: 1850 [2020-10-23 23:29:12,535 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2020-10-23 23:29:12,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1850 states. [2020-10-23 23:29:12,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1850 to 1804. [2020-10-23 23:29:12,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1804 states. [2020-10-23 23:29:12,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1804 states to 1804 states and 1998 transitions. [2020-10-23 23:29:12,823 INFO L78 Accepts]: Start accepts. Automaton has 1804 states and 1998 transitions. Word has length 910 [2020-10-23 23:29:12,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 23:29:12,825 INFO L481 AbstractCegarLoop]: Abstraction has 1804 states and 1998 transitions. [2020-10-23 23:29:12,825 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-23 23:29:12,825 INFO L276 IsEmpty]: Start isEmpty. Operand 1804 states and 1998 transitions. [2020-10-23 23:29:12,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 912 [2020-10-23 23:29:12,834 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 23:29:12,835 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, 1, 1, 1, 1] [2020-10-23 23:29:12,835 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 23:29:12,835 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 23:29:12,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 23:29:12,836 INFO L82 PathProgramCache]: Analyzing trace with hash -1140336662, now seen corresponding path program 1 times [2020-10-23 23:29:12,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 23:29:12,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1009932628] [2020-10-23 23:29:12,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 23:29:12,858 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 23:29:12,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:13,616 WARN L193 SmtUtils]: Spent 412.00 ms on a formula simplification that was a NOOP. DAG size: 244 [2020-10-23 23:29:13,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 23:29:13,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:14,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 661 [2020-10-23 23:29:14,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:14,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 23:29:14,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:14,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 23:29:14,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:14,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 683 [2020-10-23 23:29:14,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:14,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 23:29:14,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:14,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 23:29:14,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:14,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 705 [2020-10-23 23:29:14,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:14,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 23:29:14,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:14,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 23:29:14,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:14,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 727 [2020-10-23 23:29:14,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:14,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 23:29:14,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:14,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 23:29:14,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:14,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 749 [2020-10-23 23:29:14,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:14,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 23:29:14,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:14,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 23:29:14,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:14,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 771 [2020-10-23 23:29:14,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:14,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 23:29:14,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:14,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 23:29:14,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:14,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 793 [2020-10-23 23:29:14,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:14,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 796 [2020-10-23 23:29:14,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:14,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 23:29:14,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:14,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 840 [2020-10-23 23:29:14,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:14,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 23:29:14,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:14,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-23 23:29:14,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:14,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-23 23:29:14,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:14,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 23:29:14,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:14,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 23:29:14,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:14,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 23:29:14,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:15,015 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2020-10-23 23:29:15,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1009932628] [2020-10-23 23:29:15,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 23:29:15,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-23 23:29:15,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757965952] [2020-10-23 23:29:15,017 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-23 23:29:15,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 23:29:15,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-23 23:29:15,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-23 23:29:15,018 INFO L87 Difference]: Start difference. First operand 1804 states and 1998 transitions. Second operand 9 states. [2020-10-23 23:29:15,485 WARN L193 SmtUtils]: Spent 459.00 ms on a formula simplification that was a NOOP. DAG size: 253 [2020-10-23 23:29:20,290 WARN L193 SmtUtils]: Spent 470.00 ms on a formula simplification that was a NOOP. DAG size: 255 [2020-10-23 23:29:20,852 WARN L193 SmtUtils]: Spent 461.00 ms on a formula simplification that was a NOOP. DAG size: 246 [2020-10-23 23:29:21,637 WARN L193 SmtUtils]: Spent 454.00 ms on a formula simplification that was a NOOP. DAG size: 249 [2020-10-23 23:29:23,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 23:29:23,899 INFO L93 Difference]: Finished difference Result 1854 states and 2054 transitions. [2020-10-23 23:29:23,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-23 23:29:23,900 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 911 [2020-10-23 23:29:23,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 23:29:23,910 INFO L225 Difference]: With dead ends: 1854 [2020-10-23 23:29:23,910 INFO L226 Difference]: Without dead ends: 1849 [2020-10-23 23:29:23,911 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2020-10-23 23:29:23,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1849 states. [2020-10-23 23:29:24,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1849 to 1803. [2020-10-23 23:29:24,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1803 states. [2020-10-23 23:29:24,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1803 states to 1803 states and 1996 transitions. [2020-10-23 23:29:24,159 INFO L78 Accepts]: Start accepts. Automaton has 1803 states and 1996 transitions. Word has length 911 [2020-10-23 23:29:24,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 23:29:24,161 INFO L481 AbstractCegarLoop]: Abstraction has 1803 states and 1996 transitions. [2020-10-23 23:29:24,161 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-23 23:29:24,161 INFO L276 IsEmpty]: Start isEmpty. Operand 1803 states and 1996 transitions. [2020-10-23 23:29:24,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 913 [2020-10-23 23:29:24,170 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 23:29:24,171 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, 1, 1, 1, 1, 1] [2020-10-23 23:29:24,171 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 23:29:24,171 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 23:29:24,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 23:29:24,172 INFO L82 PathProgramCache]: Analyzing trace with hash -1222280921, now seen corresponding path program 1 times [2020-10-23 23:29:24,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 23:29:24,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1297953399] [2020-10-23 23:29:24,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 23:29:24,192 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 23:29:24,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:24,932 WARN L193 SmtUtils]: Spent 415.00 ms on a formula simplification that was a NOOP. DAG size: 244 [2020-10-23 23:29:24,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 23:29:24,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:25,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 661 [2020-10-23 23:29:25,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:25,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 23:29:25,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:25,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 23:29:25,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:25,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 683 [2020-10-23 23:29:25,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:25,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 23:29:25,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:25,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 23:29:25,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:25,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 705 [2020-10-23 23:29:25,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:25,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 23:29:25,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:25,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 23:29:25,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:25,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 727 [2020-10-23 23:29:25,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:25,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 23:29:25,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:25,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 23:29:25,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:25,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 749 [2020-10-23 23:29:25,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:25,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 23:29:25,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:25,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 23:29:25,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:25,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 771 [2020-10-23 23:29:25,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:25,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 23:29:25,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:25,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 23:29:25,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:25,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 793 [2020-10-23 23:29:25,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:25,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 796 [2020-10-23 23:29:25,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:25,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 23:29:25,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:25,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 840 [2020-10-23 23:29:25,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:25,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 23:29:25,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:25,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-23 23:29:25,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:25,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-23 23:29:25,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:25,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 23:29:25,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:25,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 23:29:25,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:25,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 23:29:25,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:26,121 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2020-10-23 23:29:26,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1297953399] [2020-10-23 23:29:26,121 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 23:29:26,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-23 23:29:26,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901228105] [2020-10-23 23:29:26,123 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-23 23:29:26,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 23:29:26,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-23 23:29:26,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-23 23:29:26,124 INFO L87 Difference]: Start difference. First operand 1803 states and 1996 transitions. Second operand 9 states. [2020-10-23 23:29:26,594 WARN L193 SmtUtils]: Spent 455.00 ms on a formula simplification that was a NOOP. DAG size: 253 [2020-10-23 23:29:30,537 WARN L193 SmtUtils]: Spent 469.00 ms on a formula simplification that was a NOOP. DAG size: 255 [2020-10-23 23:29:31,079 WARN L193 SmtUtils]: Spent 442.00 ms on a formula simplification that was a NOOP. DAG size: 246 [2020-10-23 23:29:31,859 WARN L193 SmtUtils]: Spent 454.00 ms on a formula simplification that was a NOOP. DAG size: 249 [2020-10-23 23:29:34,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 23:29:34,020 INFO L93 Difference]: Finished difference Result 1853 states and 2052 transitions. [2020-10-23 23:29:34,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-23 23:29:34,021 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 912 [2020-10-23 23:29:34,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 23:29:34,032 INFO L225 Difference]: With dead ends: 1853 [2020-10-23 23:29:34,033 INFO L226 Difference]: Without dead ends: 1848 [2020-10-23 23:29:34,034 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2020-10-23 23:29:34,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1848 states. [2020-10-23 23:29:34,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1848 to 1802. [2020-10-23 23:29:34,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1802 states. [2020-10-23 23:29:34,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1802 states to 1802 states and 1994 transitions. [2020-10-23 23:29:34,368 INFO L78 Accepts]: Start accepts. Automaton has 1802 states and 1994 transitions. Word has length 912 [2020-10-23 23:29:34,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 23:29:34,374 INFO L481 AbstractCegarLoop]: Abstraction has 1802 states and 1994 transitions. [2020-10-23 23:29:34,374 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-23 23:29:34,374 INFO L276 IsEmpty]: Start isEmpty. Operand 1802 states and 1994 transitions. [2020-10-23 23:29:34,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 914 [2020-10-23 23:29:34,385 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 23:29:34,386 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, 1, 1, 1, 1, 1, 1] [2020-10-23 23:29:34,386 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-23 23:29:34,386 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 23:29:34,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 23:29:34,387 INFO L82 PathProgramCache]: Analyzing trace with hash 537091533, now seen corresponding path program 1 times [2020-10-23 23:29:34,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 23:29:34,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1304214264] [2020-10-23 23:29:34,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 23:29:34,418 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 23:29:34,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:35,305 WARN L193 SmtUtils]: Spent 436.00 ms on a formula simplification that was a NOOP. DAG size: 244 [2020-10-23 23:29:35,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 23:29:35,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:35,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 661 [2020-10-23 23:29:35,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:35,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 23:29:35,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:35,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 23:29:35,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:35,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 683 [2020-10-23 23:29:35,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:35,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 23:29:35,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:35,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 23:29:35,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:35,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 705 [2020-10-23 23:29:35,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:35,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 23:29:35,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:35,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 23:29:35,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:35,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 727 [2020-10-23 23:29:35,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:35,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 23:29:35,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:35,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 23:29:35,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:35,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 749 [2020-10-23 23:29:35,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:35,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 23:29:35,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:35,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 23:29:35,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:35,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 771 [2020-10-23 23:29:35,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:35,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 23:29:35,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:35,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 23:29:35,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:35,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 793 [2020-10-23 23:29:35,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:35,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 796 [2020-10-23 23:29:35,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:36,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 23:29:36,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:36,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 840 [2020-10-23 23:29:36,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:36,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 23:29:36,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:36,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-23 23:29:36,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:36,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-23 23:29:36,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:36,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 23:29:36,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:36,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 23:29:36,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:36,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 23:29:36,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:29:36,733 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2020-10-23 23:29:36,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1304214264] [2020-10-23 23:29:36,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 23:29:36,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-23 23:29:36,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049634703] [2020-10-23 23:29:36,736 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-23 23:29:36,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 23:29:36,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-23 23:29:36,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-23 23:29:36,736 INFO L87 Difference]: Start difference. First operand 1802 states and 1994 transitions. Second operand 9 states. [2020-10-23 23:29:37,201 WARN L193 SmtUtils]: Spent 452.00 ms on a formula simplification that was a NOOP. DAG size: 253 [2020-10-23 23:29:41,072 WARN L193 SmtUtils]: Spent 489.00 ms on a formula simplification that was a NOOP. DAG size: 255 [2020-10-23 23:29:41,620 WARN L193 SmtUtils]: Spent 442.00 ms on a formula simplification that was a NOOP. DAG size: 246 [2020-10-23 23:29:42,394 WARN L193 SmtUtils]: Spent 453.00 ms on a formula simplification that was a NOOP. DAG size: 249 [2020-10-23 23:29:46,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 23:29:46,290 INFO L93 Difference]: Finished difference Result 3966 states and 4555 transitions. [2020-10-23 23:29:46,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-23 23:29:46,295 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 913 [2020-10-23 23:29:46,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 23:29:46,310 INFO L225 Difference]: With dead ends: 3966 [2020-10-23 23:29:46,310 INFO L226 Difference]: Without dead ends: 2878 [2020-10-23 23:29:46,314 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=102, Invalid=204, Unknown=0, NotChecked=0, Total=306 [2020-10-23 23:29:46,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2878 states. [2020-10-23 23:29:46,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2878 to 2836. [2020-10-23 23:29:46,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2836 states. [2020-10-23 23:29:46,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2836 states to 2836 states and 3218 transitions. [2020-10-23 23:29:46,972 INFO L78 Accepts]: Start accepts. Automaton has 2836 states and 3218 transitions. Word has length 913 [2020-10-23 23:29:46,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 23:29:46,973 INFO L481 AbstractCegarLoop]: Abstraction has 2836 states and 3218 transitions. [2020-10-23 23:29:46,973 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-23 23:29:46,973 INFO L276 IsEmpty]: Start isEmpty. Operand 2836 states and 3218 transitions. [2020-10-23 23:29:46,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 994 [2020-10-23 23:29:46,987 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 23:29:46,988 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, 1, 1, 1, 1, 1, 1] [2020-10-23 23:29:46,988 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-23 23:29:46,989 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 23:29:46,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 23:29:46,990 INFO L82 PathProgramCache]: Analyzing trace with hash -421768671, now seen corresponding path program 1 times [2020-10-23 23:29:46,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 23:29:46,990 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1178044705] [2020-10-23 23:29:46,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 23:29:48,285 WARN L193 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 253 DAG size of output: 199 [2020-10-23 23:29:49,685 WARN L193 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 197 DAG size of output: 175 [2020-10-23 23:29:50,985 WARN L193 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 203 DAG size of output: 172 [2020-10-23 23:29:52,266 WARN L193 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 252 DAG size of output: 194 [2020-10-23 23:29:53,577 WARN L193 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 192 DAG size of output: 169 [2020-10-23 23:29:54,801 WARN L193 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 197 DAG size of output: 166 [2020-10-23 23:29:56,118 WARN L193 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 253 DAG size of output: 199 [2020-10-23 23:29:57,018 WARN L193 SmtUtils]: Spent 887.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 175 [2020-10-23 23:29:58,286 WARN L193 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 203 DAG size of output: 172 [2020-10-23 23:29:59,679 WARN L193 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 255 DAG size of output: 206 [2020-10-23 23:30:01,165 WARN L193 SmtUtils]: Spent 1.47 s on a formula simplification. DAG size of input: 205 DAG size of output: 183 [2020-10-23 23:30:02,537 WARN L193 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 211 DAG size of output: 180 [2020-10-23 23:30:03,894 WARN L193 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 253 DAG size of output: 199 [2020-10-23 23:30:05,236 WARN L193 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 197 DAG size of output: 175 [2020-10-23 23:30:06,526 WARN L193 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 203 DAG size of output: 172 [2020-10-23 23:30:06,792 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 23:30:06,801 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 23:30:06,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:30:07,633 WARN L193 SmtUtils]: Spent 454.00 ms on a formula simplification that was a NOOP. DAG size: 244 [2020-10-23 23:30:07,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 23:30:07,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:30:08,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 661 [2020-10-23 23:30:08,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:30:08,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 23:30:08,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:30:08,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 23:30:08,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:30:08,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 683 [2020-10-23 23:30:08,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:30:08,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 23:30:08,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:30:08,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 23:30:08,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:30:08,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 705 [2020-10-23 23:30:08,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:30:08,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 23:30:08,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:30:08,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 23:30:08,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:30:08,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 727 [2020-10-23 23:30:08,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:30:08,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 23:30:08,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:30:08,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 23:30:08,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:30:08,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 749 [2020-10-23 23:30:08,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:30:08,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 23:30:08,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:30:08,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 23:30:08,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:30:08,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 771 [2020-10-23 23:30:08,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:30:08,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 23:30:08,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:30:08,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 23:30:08,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:30:08,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 793 [2020-10-23 23:30:08,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:30:08,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 796 [2020-10-23 23:30:08,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:30:08,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 23:30:08,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:30:08,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 840 [2020-10-23 23:30:08,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:30:08,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 23:30:08,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:30:08,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-23 23:30:08,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:30:08,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-23 23:30:08,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:30:08,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 23:30:08,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:30:08,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 23:30:08,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:30:08,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 23:30:08,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:30:08,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 932 [2020-10-23 23:30:08,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:30:08,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 23:30:08,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:30:08,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 23:30:08,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:30:08,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-23 23:30:08,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:30:08,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 970 [2020-10-23 23:30:08,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:30:08,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 981 [2020-10-23 23:30:08,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 23:30:09,005 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2020-10-23 23:30:09,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1178044705] [2020-10-23 23:30:09,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 23:30:09,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 23:30:09,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199407450] [2020-10-23 23:30:09,007 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 23:30:09,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 23:30:09,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 23:30:09,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-23 23:30:09,008 INFO L87 Difference]: Start difference. First operand 2836 states and 3218 transitions. Second operand 10 states. [2020-10-23 23:30:09,490 WARN L193 SmtUtils]: Spent 466.00 ms on a formula simplification that was a NOOP. DAG size: 253 [2020-10-23 23:30:14,683 WARN L193 SmtUtils]: Spent 456.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-23 23:30:17,044 WARN L193 SmtUtils]: Spent 475.00 ms on a formula simplification that was a NOOP. DAG size: 255 [2020-10-23 23:30:18,312 WARN L193 SmtUtils]: Spent 447.00 ms on a formula simplification that was a NOOP. DAG size: 246 [2020-10-23 23:30:19,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 23:30:19,609 INFO L93 Difference]: Finished difference Result 5578 states and 6546 transitions. [2020-10-23 23:30:19,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-23 23:30:19,610 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 993 [2020-10-23 23:30:19,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 23:30:19,630 INFO L225 Difference]: With dead ends: 5578 [2020-10-23 23:30:19,630 INFO L226 Difference]: Without dead ends: 3475 [2020-10-23 23:30:19,637 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 71 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=138, Invalid=324, Unknown=0, NotChecked=0, Total=462 [2020-10-23 23:30:19,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3475 states. [2020-10-23 23:30:20,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3475 to 2833. [2020-10-23 23:30:20,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2833 states. [2020-10-23 23:30:20,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2833 states to 2833 states and 3203 transitions. [2020-10-23 23:30:20,289 INFO L78 Accepts]: Start accepts. Automaton has 2833 states and 3203 transitions. Word has length 993 [2020-10-23 23:30:20,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 23:30:20,290 INFO L481 AbstractCegarLoop]: Abstraction has 2833 states and 3203 transitions. [2020-10-23 23:30:20,290 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 23:30:20,290 INFO L276 IsEmpty]: Start isEmpty. Operand 2833 states and 3203 transitions. [2020-10-23 23:30:20,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1010 [2020-10-23 23:30:20,303 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 23:30:20,304 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, 1, 1, 1, 1, 1, 1] [2020-10-23 23:30:20,304 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-23 23:30:20,304 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 23:30:20,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 23:30:20,305 INFO L82 PathProgramCache]: Analyzing trace with hash 596581517, now seen corresponding path program 1 times [2020-10-23 23:30:20,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 23:30:20,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [856226510] [2020-10-23 23:30:20,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 23:30:21,693 WARN L193 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 253 DAG size of output: 199 [2020-10-23 23:30:22,611 WARN L193 SmtUtils]: Spent 910.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 175 [2020-10-23 23:30:23,906 WARN L193 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 203 DAG size of output: 172 [2020-10-23 23:30:25,196 WARN L193 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 252 DAG size of output: 194 [2020-10-23 23:30:26,064 WARN L193 SmtUtils]: Spent 858.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 169 [2020-10-23 23:30:27,294 WARN L193 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 197 DAG size of output: 166 [2020-10-23 23:30:28,669 WARN L193 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 253 DAG size of output: 199 [2020-10-23 23:30:29,609 WARN L193 SmtUtils]: Spent 931.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 175 [2020-10-23 23:30:30,897 WARN L193 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 203 DAG size of output: 172 [2020-10-23 23:30:32,308 WARN L193 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 255 DAG size of output: 206 [2020-10-23 23:30:33,749 WARN L193 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 205 DAG size of output: 183 [2020-10-23 23:30:35,148 WARN L193 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 211 DAG size of output: 180 [2020-10-23 23:30:36,431 WARN L193 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 253 DAG size of output: 199 [2020-10-23 23:30:37,782 WARN L193 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 197 DAG size of output: 175 [2020-10-23 23:30:39,109 WARN L193 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 203 DAG size of output: 172 [2020-10-23 23:30:39,119 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.icfgtransformer.loopacceleration.fastupr.paraoct.OctagonCalculator.normalizeVarNames(OctagonCalculator.java:153) at de.uni_freiburg.informatik.ultimate.icfgtransformer.loopacceleration.fastupr.FastUPRCore.(FastUPRCore.java:133) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.loopaccelerator.Accelerator.fastUprAcceleration(Accelerator.java:109) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.loopaccelerator.Accelerator.accelerateLoop(Accelerator.java:89) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.acceleratedInterpolationCore(AcceleratedInterpolation.java:285) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:147) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:241) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) 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:341) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) 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:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-10-23 23:30:39,124 INFO L168 Benchmark]: Toolchain (without parser) took 128675.85 ms. Allocated memory was 170.9 MB in the beginning and 1.1 GB in the end (delta: 892.3 MB). Free memory was 138.4 MB in the beginning and 832.7 MB in the end (delta: -694.3 MB). Peak memory consumption was 198.8 MB. Max. memory is 8.0 GB. [2020-10-23 23:30:39,124 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 125.8 MB. Free memory was 109.4 MB in the beginning and 109.3 MB in the end (delta: 73.1 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 23:30:39,125 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1662.68 ms. Allocated memory is still 170.9 MB. Free memory was 137.9 MB in the beginning and 100.6 MB in the end (delta: 37.2 MB). Peak memory consumption was 39.5 MB. Max. memory is 8.0 GB. [2020-10-23 23:30:39,126 INFO L168 Benchmark]: Boogie Preprocessor took 303.47 ms. Allocated memory was 170.9 MB in the beginning and 241.2 MB in the end (delta: 70.3 MB). Free memory was 100.6 MB in the beginning and 194.0 MB in the end (delta: -93.4 MB). Peak memory consumption was 17.3 MB. Max. memory is 8.0 GB. [2020-10-23 23:30:39,126 INFO L168 Benchmark]: RCFGBuilder took 2726.94 ms. Allocated memory is still 241.2 MB. Free memory was 194.0 MB in the beginning and 175.7 MB in the end (delta: 18.2 MB). Peak memory consumption was 131.0 MB. Max. memory is 8.0 GB. [2020-10-23 23:30:39,127 INFO L168 Benchmark]: TraceAbstraction took 123967.89 ms. Allocated memory was 241.2 MB in the beginning and 1.1 GB in the end (delta: 822.1 MB). Free memory was 175.2 MB in the beginning and 832.7 MB in the end (delta: -657.5 MB). Peak memory consumption was 165.1 MB. Max. memory is 8.0 GB. [2020-10-23 23:30:39,130 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 125.8 MB. Free memory was 109.4 MB in the beginning and 109.3 MB in the end (delta: 73.1 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 1662.68 ms. Allocated memory is still 170.9 MB. Free memory was 137.9 MB in the beginning and 100.6 MB in the end (delta: 37.2 MB). Peak memory consumption was 39.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 303.47 ms. Allocated memory was 170.9 MB in the beginning and 241.2 MB in the end (delta: 70.3 MB). Free memory was 100.6 MB in the beginning and 194.0 MB in the end (delta: -93.4 MB). Peak memory consumption was 17.3 MB. Max. memory is 8.0 GB. * RCFGBuilder took 2726.94 ms. Allocated memory is still 241.2 MB. Free memory was 194.0 MB in the beginning and 175.7 MB in the end (delta: 18.2 MB). Peak memory consumption was 131.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 123967.89 ms. Allocated memory was 241.2 MB in the beginning and 1.1 GB in the end (delta: 822.1 MB). Free memory was 175.2 MB in the beginning and 832.7 MB in the end (delta: -657.5 MB). Peak memory consumption was 165.1 MB. Max. memory is 8.0 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.icfgtransformer.loopacceleration.fastupr.paraoct.OctagonCalculator.normalizeVarNames(OctagonCalculator.java:153) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...