/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/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/list-ext2-properties/list_and_tree_cnstr-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-22 02:01:10,707 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 02:01:10,711 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 02:01:10,756 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-22 02:01:10,756 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-22 02:01:10,758 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-22 02:01:10,759 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-22 02:01:10,762 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-22 02:01:10,784 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-22 02:01:10,789 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-22 02:01:10,791 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-22 02:01:10,801 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-22 02:01:10,804 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-22 02:01:10,810 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-22 02:01:10,813 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-22 02:01:10,818 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-22 02:01:10,822 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-22 02:01:10,827 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-22 02:01:10,836 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-22 02:01:10,842 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-22 02:01:10,844 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-22 02:01:10,846 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-22 02:01:10,848 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-22 02:01:10,850 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-22 02:01:10,857 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-22 02:01:10,858 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-22 02:01:10,858 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-22 02:01:10,863 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-22 02:01:10,864 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-22 02:01:10,865 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-22 02:01:10,866 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-22 02:01:10,866 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-22 02:01:10,868 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-22 02:01:10,869 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-22 02:01:10,869 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-22 02:01:10,870 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-22 02:01:10,871 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-22 02:01:10,872 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-22 02:01:10,872 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-22 02:01:10,873 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-22 02:01:10,873 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-22 02:01:10,878 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-22 02:01:10,897 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 02:01:10,898 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 02:01:10,902 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 02:01:10,902 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-22 02:01:10,903 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 02:01:10,903 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-22 02:01:10,903 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 02:01:10,903 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 02:01:10,903 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 02:01:10,904 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 02:01:10,905 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-22 02:01:10,905 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 02:01:10,905 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 02:01:10,905 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 02:01:10,905 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 02:01:10,906 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 02:01:10,906 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 02:01:10,906 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 02:01:10,906 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 02:01:10,906 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 02:01:10,907 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 02:01:10,907 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 02:01:10,907 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-22 02:01:10,907 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-22 02:01:11,345 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 02:01:11,379 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 02:01:11,382 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 02:01:11,384 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 02:01:11,385 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 02:01:11,386 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext2-properties/list_and_tree_cnstr-1.i [2021-02-22 02:01:11,484 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b15ec4a21/7431a4fdeddb4a6897f6564f336c88a0/FLAGa100bab5c [2021-02-22 02:01:12,319 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 02:01:12,320 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-ext2-properties/list_and_tree_cnstr-1.i [2021-02-22 02:01:12,341 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b15ec4a21/7431a4fdeddb4a6897f6564f336c88a0/FLAGa100bab5c [2021-02-22 02:01:12,547 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b15ec4a21/7431a4fdeddb4a6897f6564f336c88a0 [2021-02-22 02:01:12,551 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 02:01:12,569 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 02:01:12,574 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 02:01:12,575 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 02:01:12,579 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 02:01:12,580 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 02:01:12" (1/1) ... [2021-02-22 02:01:12,583 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19becf6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:01:12, skipping insertion in model container [2021-02-22 02:01:12,583 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 02:01:12" (1/1) ... [2021-02-22 02:01:12,593 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 02:01:12,648 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 02:01:13,084 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/list-ext2-properties/list_and_tree_cnstr-1.i[24291,24304] [2021-02-22 02:01:13,096 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 02:01:13,106 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 02:01:13,208 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/list-ext2-properties/list_and_tree_cnstr-1.i[24291,24304] [2021-02-22 02:01:13,210 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 02:01:13,280 INFO L208 MainTranslator]: Completed translation [2021-02-22 02:01:13,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:01:13 WrapperNode [2021-02-22 02:01:13,281 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 02:01:13,282 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 02:01:13,283 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 02:01:13,284 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 02:01:13,305 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:01:13" (1/1) ... [2021-02-22 02:01:13,306 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:01:13" (1/1) ... [2021-02-22 02:01:13,348 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:01:13" (1/1) ... [2021-02-22 02:01:13,348 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:01:13" (1/1) ... [2021-02-22 02:01:13,375 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:01:13" (1/1) ... [2021-02-22 02:01:13,383 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:01:13" (1/1) ... [2021-02-22 02:01:13,388 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:01:13" (1/1) ... [2021-02-22 02:01:13,396 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 02:01:13,397 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 02:01:13,397 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 02:01:13,397 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 02:01:13,398 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:01:13" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 02:01:13,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 02:01:13,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 02:01:13,517 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 02:01:13,517 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-02-22 02:01:13,517 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-02-22 02:01:13,517 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-02-22 02:01:13,517 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 02:01:13,518 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 02:01:13,518 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 02:01:13,519 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-22 02:01:13,519 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-22 02:01:13,519 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 02:01:13,520 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 02:01:13,520 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-22 02:01:13,520 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-02-22 02:01:13,521 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-02-22 02:01:13,521 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-02-22 02:01:13,522 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-02-22 02:01:13,522 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-02-22 02:01:13,525 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-02-22 02:01:13,525 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-02-22 02:01:13,525 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-02-22 02:01:13,526 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-02-22 02:01:13,526 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-02-22 02:01:13,526 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-02-22 02:01:13,526 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-02-22 02:01:13,526 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-02-22 02:01:13,526 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-02-22 02:01:13,526 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-02-22 02:01:13,526 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-02-22 02:01:13,527 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-02-22 02:01:13,527 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-02-22 02:01:13,527 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-02-22 02:01:13,527 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-02-22 02:01:13,527 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-02-22 02:01:13,527 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-02-22 02:01:13,527 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-02-22 02:01:13,528 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-02-22 02:01:13,528 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-02-22 02:01:13,528 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-02-22 02:01:13,528 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-02-22 02:01:13,528 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-02-22 02:01:13,528 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-02-22 02:01:13,528 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-02-22 02:01:13,528 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-02-22 02:01:13,529 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-02-22 02:01:13,529 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-02-22 02:01:13,529 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-02-22 02:01:13,529 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-02-22 02:01:13,529 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-02-22 02:01:13,529 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-02-22 02:01:13,529 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-02-22 02:01:13,529 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-02-22 02:01:13,530 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-02-22 02:01:13,530 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-02-22 02:01:13,530 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-02-22 02:01:13,530 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-02-22 02:01:13,530 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-02-22 02:01:13,530 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-02-22 02:01:13,531 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-02-22 02:01:13,531 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-02-22 02:01:13,531 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-02-22 02:01:13,532 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-02-22 02:01:13,532 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-02-22 02:01:13,532 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-02-22 02:01:13,532 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-02-22 02:01:13,532 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-22 02:01:13,532 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-02-22 02:01:13,532 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-02-22 02:01:13,533 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-22 02:01:13,533 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-02-22 02:01:13,533 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-02-22 02:01:13,533 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-02-22 02:01:13,533 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-02-22 02:01:13,534 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-02-22 02:01:13,534 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-02-22 02:01:13,534 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-02-22 02:01:13,535 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-02-22 02:01:13,535 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-02-22 02:01:13,535 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-02-22 02:01:13,535 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-02-22 02:01:13,535 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-02-22 02:01:13,535 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-02-22 02:01:13,536 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-02-22 02:01:13,536 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-02-22 02:01:13,537 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-02-22 02:01:13,537 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-02-22 02:01:13,537 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-02-22 02:01:13,537 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-02-22 02:01:13,538 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-02-22 02:01:13,538 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-02-22 02:01:13,539 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-02-22 02:01:13,539 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-02-22 02:01:13,539 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-02-22 02:01:13,539 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-02-22 02:01:13,539 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-02-22 02:01:13,540 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-02-22 02:01:13,540 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-02-22 02:01:13,540 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-02-22 02:01:13,540 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-02-22 02:01:13,540 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-02-22 02:01:13,540 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-02-22 02:01:13,540 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-02-22 02:01:13,540 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-02-22 02:01:13,541 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-02-22 02:01:13,541 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-02-22 02:01:13,541 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-02-22 02:01:13,541 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-02-22 02:01:13,541 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-02-22 02:01:13,541 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-02-22 02:01:13,541 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-02-22 02:01:13,542 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-02-22 02:01:13,542 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-02-22 02:01:13,542 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-02-22 02:01:13,542 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-02-22 02:01:13,542 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-02-22 02:01:13,542 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-02-22 02:01:13,542 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-02-22 02:01:13,543 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-02-22 02:01:13,543 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 02:01:13,543 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-22 02:01:13,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-22 02:01:13,543 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-22 02:01:13,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 02:01:13,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 02:01:13,544 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 02:01:13,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 02:01:13,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 02:01:13,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 02:01:13,929 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-02-22 02:01:14,430 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 02:01:14,430 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-02-22 02:01:14,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 02:01:14 BoogieIcfgContainer [2021-02-22 02:01:14,433 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 02:01:14,435 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 02:01:14,436 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 02:01:14,440 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 02:01:14,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 02:01:12" (1/3) ... [2021-02-22 02:01:14,441 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d162132 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 02:01:14, skipping insertion in model container [2021-02-22 02:01:14,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:01:13" (2/3) ... [2021-02-22 02:01:14,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d162132 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 02:01:14, skipping insertion in model container [2021-02-22 02:01:14,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 02:01:14" (3/3) ... [2021-02-22 02:01:14,444 INFO L111 eAbstractionObserver]: Analyzing ICFG list_and_tree_cnstr-1.i [2021-02-22 02:01:14,451 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 02:01:14,458 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-22 02:01:14,482 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-22 02:01:14,511 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 02:01:14,511 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 02:01:14,512 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-22 02:01:14,512 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 02:01:14,512 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 02:01:14,512 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 02:01:14,512 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 02:01:14,513 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 02:01:14,536 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states. [2021-02-22 02:01:14,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-02-22 02:01:14,553 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:01:14,554 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 02:01:14,554 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:01:14,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:01:14,562 INFO L82 PathProgramCache]: Analyzing trace with hash 119990243, now seen corresponding path program 1 times [2021-02-22 02:01:14,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:01:14,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [25796690] [2021-02-22 02:01:14,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:01:14,672 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:01:14,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:01:14,876 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:14,877 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:14,879 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:14,880 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:14,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:01:14,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:01:14,967 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:14,968 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:14,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 02:01:14,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [25796690] [2021-02-22 02:01:14,988 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:01:14,988 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-22 02:01:14,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132296955] [2021-02-22 02:01:14,997 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-22 02:01:14,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:01:15,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-22 02:01:15,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-22 02:01:15,018 INFO L87 Difference]: Start difference. First operand 182 states. Second operand 3 states. [2021-02-22 02:01:15,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:01:15,591 INFO L93 Difference]: Finished difference Result 347 states and 405 transitions. [2021-02-22 02:01:15,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-22 02:01:15,593 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 35 [2021-02-22 02:01:15,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:01:15,608 INFO L225 Difference]: With dead ends: 347 [2021-02-22 02:01:15,609 INFO L226 Difference]: Without dead ends: 170 [2021-02-22 02:01:15,616 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-22 02:01:15,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-02-22 02:01:15,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2021-02-22 02:01:15,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2021-02-22 02:01:15,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 187 transitions. [2021-02-22 02:01:15,678 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 187 transitions. Word has length 35 [2021-02-22 02:01:15,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:01:15,679 INFO L480 AbstractCegarLoop]: Abstraction has 170 states and 187 transitions. [2021-02-22 02:01:15,679 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-22 02:01:15,679 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 187 transitions. [2021-02-22 02:01:15,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-02-22 02:01:15,682 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:01:15,682 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 02:01:15,682 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 02:01:15,683 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:01:15,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:01:15,683 INFO L82 PathProgramCache]: Analyzing trace with hash 391291352, now seen corresponding path program 1 times [2021-02-22 02:01:15,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:01:15,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1029241213] [2021-02-22 02:01:15,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:01:15,690 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:01:15,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:01:15,755 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:15,756 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:15,757 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:15,757 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 02:01:15,761 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:15,762 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 02:01:15,768 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:15,768 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:15,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:01:15,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:01:15,821 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:15,822 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:15,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 02:01:15,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1029241213] [2021-02-22 02:01:15,827 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:01:15,828 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-22 02:01:15,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658802986] [2021-02-22 02:01:15,829 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-22 02:01:15,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:01:15,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-22 02:01:15,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-22 02:01:15,830 INFO L87 Difference]: Start difference. First operand 170 states and 187 transitions. Second operand 5 states. [2021-02-22 02:01:16,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:01:16,216 INFO L93 Difference]: Finished difference Result 255 states and 281 transitions. [2021-02-22 02:01:16,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-22 02:01:16,216 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 45 [2021-02-22 02:01:16,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:01:16,221 INFO L225 Difference]: With dead ends: 255 [2021-02-22 02:01:16,221 INFO L226 Difference]: Without dead ends: 205 [2021-02-22 02:01:16,223 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-22 02:01:16,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2021-02-22 02:01:16,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 204. [2021-02-22 02:01:16,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2021-02-22 02:01:16,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 226 transitions. [2021-02-22 02:01:16,257 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 226 transitions. Word has length 45 [2021-02-22 02:01:16,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:01:16,258 INFO L480 AbstractCegarLoop]: Abstraction has 204 states and 226 transitions. [2021-02-22 02:01:16,258 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-22 02:01:16,258 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 226 transitions. [2021-02-22 02:01:16,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-02-22 02:01:16,261 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:01:16,261 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 02:01:16,262 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-22 02:01:16,262 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:01:16,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:01:16,262 INFO L82 PathProgramCache]: Analyzing trace with hash -148109217, now seen corresponding path program 1 times [2021-02-22 02:01:16,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:01:16,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1010131319] [2021-02-22 02:01:16,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:01:16,279 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.loopaccelerator.AcceleratorWernerOverapprox.accelerateLoop(AcceleratorWernerOverapprox.java:55) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolationCore.acceleratedInterpolationCoreIsCorrect(AcceleratedInterpolationCore.java:183) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:145) 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:437) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:62) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateAllErrorsAtOnce(TraceAbstractionStarter.java:317) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:171) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:131) 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) [2021-02-22 02:01:16,284 INFO L168 Benchmark]: Toolchain (without parser) took 3728.66 ms. Allocated memory was 173.0 MB in the beginning and 207.6 MB in the end (delta: 34.6 MB). Free memory was 128.3 MB in the beginning and 127.2 MB in the end (delta: 1.2 MB). Peak memory consumption was 36.6 MB. Max. memory is 8.0 GB. [2021-02-22 02:01:16,284 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 173.0 MB. Free memory is still 146.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 02:01:16,285 INFO L168 Benchmark]: CACSL2BoogieTranslator took 707.21 ms. Allocated memory is still 173.0 MB. Free memory was 127.2 MB in the beginning and 139.8 MB in the end (delta: -12.6 MB). Peak memory consumption was 11.7 MB. Max. memory is 8.0 GB. [2021-02-22 02:01:16,286 INFO L168 Benchmark]: Boogie Preprocessor took 113.49 ms. Allocated memory is still 173.0 MB. Free memory was 139.8 MB in the beginning and 153.2 MB in the end (delta: -13.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-22 02:01:16,287 INFO L168 Benchmark]: RCFGBuilder took 1036.57 ms. Allocated memory was 173.0 MB in the beginning and 207.6 MB in the end (delta: 34.6 MB). Free memory was 153.2 MB in the beginning and 181.0 MB in the end (delta: -27.8 MB). Peak memory consumption was 62.9 MB. Max. memory is 8.0 GB. [2021-02-22 02:01:16,288 INFO L168 Benchmark]: TraceAbstraction took 1845.90 ms. Allocated memory is still 207.6 MB. Free memory was 180.5 MB in the beginning and 127.2 MB in the end (delta: 53.3 MB). Peak memory consumption was 53.3 MB. Max. memory is 8.0 GB. [2021-02-22 02:01:16,292 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 173.0 MB. Free memory is still 146.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 707.21 ms. Allocated memory is still 173.0 MB. Free memory was 127.2 MB in the beginning and 139.8 MB in the end (delta: -12.6 MB). Peak memory consumption was 11.7 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 113.49 ms. Allocated memory is still 173.0 MB. Free memory was 139.8 MB in the beginning and 153.2 MB in the end (delta: -13.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1036.57 ms. Allocated memory was 173.0 MB in the beginning and 207.6 MB in the end (delta: 34.6 MB). Free memory was 153.2 MB in the beginning and 181.0 MB in the end (delta: -27.8 MB). Peak memory consumption was 62.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1845.90 ms. Allocated memory is still 207.6 MB. Free memory was 180.5 MB in the beginning and 127.2 MB in the end (delta: 53.3 MB). Peak memory consumption was 53.3 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.lib.acceleratedinterpolation.loopaccelerator.AcceleratorWernerOverapprox.accelerateLoop(AcceleratorWernerOverapprox.java:55) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...