/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_32.epf -i ../../../trunk/examples/svcomp/forester-heap/dll-rb-cnstr_1-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 18:09:30,614 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 18:09:30,617 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 18:09:30,652 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 18:09:30,653 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 18:09:30,655 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 18:09:30,657 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 18:09:30,659 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 18:09:30,662 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 18:09:30,663 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 18:09:30,664 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 18:09:30,666 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 18:09:30,667 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 18:09:30,668 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 18:09:30,669 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 18:09:30,671 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 18:09:30,672 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 18:09:30,674 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 18:09:30,676 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 18:09:30,678 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 18:09:30,680 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 18:09:30,682 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 18:09:30,684 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 18:09:30,685 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 18:09:30,710 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 18:09:30,711 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 18:09:30,711 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 18:09:30,712 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 18:09:30,713 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 18:09:30,714 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 18:09:30,715 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 18:09:30,716 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 18:09:30,717 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 18:09:30,718 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 18:09:30,719 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 18:09:30,720 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 18:09:30,721 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 18:09:30,721 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 18:09:30,721 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 18:09:30,723 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 18:09:30,723 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 18:09:30,725 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 18:09:30,737 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 18:09:30,738 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 18:09:30,739 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 18:09:30,740 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 18:09:30,740 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 18:09:30,740 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 18:09:30,740 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 18:09:30,741 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 18:09:30,741 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 18:09:30,741 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 18:09:30,742 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 18:09:30,742 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 18:09:30,742 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 18:09:30,742 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 18:09:30,743 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 18:09:30,743 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 18:09:30,743 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 18:09:30,744 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 18:09:30,744 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 18:09:30,744 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 18:09:30,745 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 18:09:30,745 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 18:09:30,745 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 18:09:31,165 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 18:09:31,200 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 18:09:31,204 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 18:09:31,205 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 18:09:31,206 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 18:09:31,207 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-rb-cnstr_1-2.i [2021-02-23 18:09:31,297 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e0e9643a/4b22ed0019114f35acf0614e4f2e464f/FLAG2ce04d67d [2021-02-23 18:09:31,997 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 18:09:31,997 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-rb-cnstr_1-2.i [2021-02-23 18:09:32,022 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e0e9643a/4b22ed0019114f35acf0614e4f2e464f/FLAG2ce04d67d [2021-02-23 18:09:32,305 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e0e9643a/4b22ed0019114f35acf0614e4f2e464f [2021-02-23 18:09:32,309 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 18:09:32,321 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 18:09:32,325 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 18:09:32,325 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 18:09:32,329 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 18:09:32,330 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:09:32" (1/1) ... [2021-02-23 18:09:32,332 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1378dc4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:09:32, skipping insertion in model container [2021-02-23 18:09:32,332 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:09:32" (1/1) ... [2021-02-23 18:09:32,344 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 18:09:32,417 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 18:09:32,783 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-rb-cnstr_1-2.i[22575,22588] [2021-02-23 18:09:32,788 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-rb-cnstr_1-2.i[22647,22660] [2021-02-23 18:09:32,792 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-rb-cnstr_1-2.i[22815,22828] [2021-02-23 18:09:32,805 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 18:09:32,821 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 18:09:32,901 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-rb-cnstr_1-2.i[22575,22588] [2021-02-23 18:09:32,904 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-rb-cnstr_1-2.i[22647,22660] [2021-02-23 18:09:32,908 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-rb-cnstr_1-2.i[22815,22828] [2021-02-23 18:09:32,915 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 18:09:32,982 INFO L208 MainTranslator]: Completed translation [2021-02-23 18:09:32,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:09:32 WrapperNode [2021-02-23 18:09:32,983 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 18:09:32,984 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 18:09:32,985 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 18:09:32,996 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 18:09:33,020 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:09:32" (1/1) ... [2021-02-23 18:09:33,021 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:09:32" (1/1) ... [2021-02-23 18:09:33,074 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:09:32" (1/1) ... [2021-02-23 18:09:33,074 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:09:32" (1/1) ... [2021-02-23 18:09:33,118 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:09:32" (1/1) ... [2021-02-23 18:09:33,128 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:09:32" (1/1) ... [2021-02-23 18:09:33,141 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:09:32" (1/1) ... [2021-02-23 18:09:33,152 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 18:09:33,154 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 18:09:33,154 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 18:09:33,159 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 18:09:33,160 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:09:32" (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 [2021-02-23 18:09:33,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 18:09:33,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 18:09:33,290 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 18:09:33,290 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 18:09:33,291 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-02-23 18:09:33,291 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-02-23 18:09:33,291 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-02-23 18:09:33,291 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-02-23 18:09:33,292 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-02-23 18:09:33,292 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-02-23 18:09:33,292 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-02-23 18:09:33,293 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-02-23 18:09:33,293 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-02-23 18:09:33,293 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-02-23 18:09:33,294 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-02-23 18:09:33,294 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-02-23 18:09:33,297 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-02-23 18:09:33,297 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-02-23 18:09:33,297 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-02-23 18:09:33,297 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-02-23 18:09:33,297 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-02-23 18:09:33,298 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-02-23 18:09:33,298 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-02-23 18:09:33,298 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-02-23 18:09:33,298 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-02-23 18:09:33,299 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-02-23 18:09:33,299 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-02-23 18:09:33,299 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-02-23 18:09:33,299 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-02-23 18:09:33,299 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-02-23 18:09:33,299 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-02-23 18:09:33,300 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-02-23 18:09:33,300 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-02-23 18:09:33,300 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-02-23 18:09:33,300 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-02-23 18:09:33,300 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-02-23 18:09:33,300 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-02-23 18:09:33,301 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-02-23 18:09:33,301 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-02-23 18:09:33,301 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-02-23 18:09:33,301 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-02-23 18:09:33,301 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-02-23 18:09:33,301 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-02-23 18:09:33,302 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-02-23 18:09:33,302 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-02-23 18:09:33,302 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-02-23 18:09:33,302 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-02-23 18:09:33,302 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-02-23 18:09:33,302 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-02-23 18:09:33,302 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-02-23 18:09:33,303 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-02-23 18:09:33,303 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-02-23 18:09:33,303 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-02-23 18:09:33,303 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-02-23 18:09:33,303 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 18:09:33,303 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-02-23 18:09:33,305 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-02-23 18:09:33,305 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-23 18:09:33,305 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-02-23 18:09:33,305 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-02-23 18:09:33,305 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-02-23 18:09:33,306 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-02-23 18:09:33,306 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-02-23 18:09:33,306 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 18:09:33,306 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-02-23 18:09:33,306 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-02-23 18:09:33,307 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-02-23 18:09:33,307 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-02-23 18:09:33,307 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-02-23 18:09:33,308 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-02-23 18:09:33,308 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-02-23 18:09:33,308 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-02-23 18:09:33,308 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-02-23 18:09:33,309 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-02-23 18:09:33,309 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-02-23 18:09:33,310 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-02-23 18:09:33,310 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-02-23 18:09:33,310 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-02-23 18:09:33,310 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-02-23 18:09:33,311 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-02-23 18:09:33,312 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-02-23 18:09:33,313 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-02-23 18:09:33,313 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-02-23 18:09:33,313 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-02-23 18:09:33,313 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-02-23 18:09:33,313 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-02-23 18:09:33,314 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-02-23 18:09:33,314 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-02-23 18:09:33,315 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-02-23 18:09:33,315 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-02-23 18:09:33,315 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-02-23 18:09:33,316 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-02-23 18:09:33,316 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-02-23 18:09:33,316 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-02-23 18:09:33,316 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-02-23 18:09:33,316 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-02-23 18:09:33,317 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-02-23 18:09:33,317 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-02-23 18:09:33,317 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-02-23 18:09:33,317 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-02-23 18:09:33,317 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-02-23 18:09:33,318 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-02-23 18:09:33,318 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-02-23 18:09:33,318 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-02-23 18:09:33,318 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-02-23 18:09:33,319 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-02-23 18:09:33,319 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-02-23 18:09:33,319 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 18:09:33,319 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 18:09:33,319 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-23 18:09:33,319 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-23 18:09:33,320 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 18:09:33,320 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 18:09:33,320 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 18:09:33,320 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 18:09:33,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-23 18:09:33,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 18:09:33,320 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-23 18:09:33,321 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 18:09:33,321 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 18:09:33,321 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 18:09:33,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 18:09:33,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 18:09:34,166 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 18:09:34,166 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-02-23 18:09:34,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:09:34 BoogieIcfgContainer [2021-02-23 18:09:34,169 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 18:09:34,171 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 18:09:34,171 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 18:09:34,175 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 18:09:34,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 06:09:32" (1/3) ... [2021-02-23 18:09:34,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@778303cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:09:34, skipping insertion in model container [2021-02-23 18:09:34,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:09:32" (2/3) ... [2021-02-23 18:09:34,177 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@778303cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:09:34, skipping insertion in model container [2021-02-23 18:09:34,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:09:34" (3/3) ... [2021-02-23 18:09:34,179 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-rb-cnstr_1-2.i [2021-02-23 18:09:34,188 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 18:09:34,194 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2021-02-23 18:09:34,219 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-02-23 18:09:34,248 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 18:09:34,249 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 18:09:34,249 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 18:09:34,249 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 18:09:34,249 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 18:09:34,250 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 18:09:34,250 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 18:09:34,250 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 18:09:34,270 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states. [2021-02-23 18:09:34,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-02-23 18:09:34,280 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:09:34,281 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] [2021-02-23 18:09:34,282 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:09:34,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:09:34,289 INFO L82 PathProgramCache]: Analyzing trace with hash -895071465, now seen corresponding path program 1 times [2021-02-23 18:09:34,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:09:34,301 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2143681679] [2021-02-23 18:09:34,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:09:34,401 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:09:34,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:09:34,577 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:34,579 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:34,580 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:34,581 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:34,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:09:34,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:09:34,639 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:34,640 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:34,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:09:34,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2143681679] [2021-02-23 18:09:34,651 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:09:34,651 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 18:09:34,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889852065] [2021-02-23 18:09:34,657 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 18:09:34,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:09:34,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 18:09:34,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 18:09:34,678 INFO L87 Difference]: Start difference. First operand 106 states. Second operand 3 states. [2021-02-23 18:09:34,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:09:34,987 INFO L93 Difference]: Finished difference Result 163 states and 194 transitions. [2021-02-23 18:09:34,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 18:09:34,989 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2021-02-23 18:09:34,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:09:34,999 INFO L225 Difference]: With dead ends: 163 [2021-02-23 18:09:35,000 INFO L226 Difference]: Without dead ends: 80 [2021-02-23 18:09:35,004 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 [2021-02-23 18:09:35,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-02-23 18:09:35,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2021-02-23 18:09:35,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2021-02-23 18:09:35,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 83 transitions. [2021-02-23 18:09:35,051 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 83 transitions. Word has length 22 [2021-02-23 18:09:35,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:09:35,052 INFO L480 AbstractCegarLoop]: Abstraction has 80 states and 83 transitions. [2021-02-23 18:09:35,052 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 18:09:35,052 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 83 transitions. [2021-02-23 18:09:35,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-02-23 18:09:35,053 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:09:35,053 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] [2021-02-23 18:09:35,053 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 18:09:35,054 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:09:35,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:09:35,054 INFO L82 PathProgramCache]: Analyzing trace with hash 1748629041, now seen corresponding path program 1 times [2021-02-23 18:09:35,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:09:35,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1285763824] [2021-02-23 18:09:35,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:09:35,060 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:09:35,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:09:35,128 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:35,129 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:35,130 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:35,130 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:09:35,135 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:35,136 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:09:35,142 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:35,143 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:09:35,150 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:35,151 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:35,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:09:35,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:09:35,194 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:35,194 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:35,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:09:35,200 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1285763824] [2021-02-23 18:09:35,200 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:09:35,200 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 18:09:35,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733082909] [2021-02-23 18:09:35,201 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 18:09:35,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:09:35,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 18:09:35,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-23 18:09:35,203 INFO L87 Difference]: Start difference. First operand 80 states and 83 transitions. Second operand 6 states. [2021-02-23 18:09:35,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:09:35,505 INFO L93 Difference]: Finished difference Result 108 states and 113 transitions. [2021-02-23 18:09:35,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 18:09:35,506 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2021-02-23 18:09:35,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:09:35,512 INFO L225 Difference]: With dead ends: 108 [2021-02-23 18:09:35,513 INFO L226 Difference]: Without dead ends: 106 [2021-02-23 18:09:35,515 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-02-23 18:09:35,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-02-23 18:09:35,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 78. [2021-02-23 18:09:35,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2021-02-23 18:09:35,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 81 transitions. [2021-02-23 18:09:35,560 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 81 transitions. Word has length 24 [2021-02-23 18:09:35,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:09:35,561 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 81 transitions. [2021-02-23 18:09:35,561 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 18:09:35,561 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 81 transitions. [2021-02-23 18:09:35,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-02-23 18:09:35,563 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:09:35,563 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] [2021-02-23 18:09:35,564 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 18:09:35,564 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:09:35,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:09:35,565 INFO L82 PathProgramCache]: Analyzing trace with hash 975517528, now seen corresponding path program 1 times [2021-02-23 18:09:35,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:09:35,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1180899647] [2021-02-23 18:09:35,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:09:35,579 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:09:35,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:09:35,701 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:35,702 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:35,703 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:35,704 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:09:35,708 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:35,709 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:09:35,722 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:35,723 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-23 18:09:35,737 WARN L141 QuantifierPusher]: treesize reduction 14, result has 39.1 percent of original size [2021-02-23 18:09:35,738 WARN L147 QuantifierPusher]: treesize reduction 14, result has 39.1 percent of original size 9 [2021-02-23 18:09:35,746 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:35,747 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:09:35,756 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:35,757 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:35,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:09:35,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:09:35,800 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:35,801 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:35,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:09:35,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1180899647] [2021-02-23 18:09:35,810 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:09:35,810 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-23 18:09:35,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81699004] [2021-02-23 18:09:35,814 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-23 18:09:35,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:09:35,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-23 18:09:35,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-02-23 18:09:35,815 INFO L87 Difference]: Start difference. First operand 78 states and 81 transitions. Second operand 8 states. [2021-02-23 18:09:36,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:09:36,263 INFO L93 Difference]: Finished difference Result 132 states and 138 transitions. [2021-02-23 18:09:36,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-23 18:09:36,264 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2021-02-23 18:09:36,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:09:36,268 INFO L225 Difference]: With dead ends: 132 [2021-02-23 18:09:36,269 INFO L226 Difference]: Without dead ends: 129 [2021-02-23 18:09:36,270 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2021-02-23 18:09:36,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-02-23 18:09:36,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 87. [2021-02-23 18:09:36,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2021-02-23 18:09:36,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 91 transitions. [2021-02-23 18:09:36,295 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 91 transitions. Word has length 28 [2021-02-23 18:09:36,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:09:36,296 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 91 transitions. [2021-02-23 18:09:36,296 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-23 18:09:36,296 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 91 transitions. [2021-02-23 18:09:36,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-02-23 18:09:36,298 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:09:36,298 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] [2021-02-23 18:09:36,298 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 18:09:36,298 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:09:36,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:09:36,299 INFO L82 PathProgramCache]: Analyzing trace with hash 525692103, now seen corresponding path program 1 times [2021-02-23 18:09:36,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:09:36,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [918865278] [2021-02-23 18:09:36,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:09:36,305 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:09:36,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 18:09:36,328 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 18:09:36,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 18:09:36,352 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 18:09:36,391 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 18:09:36,391 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 18:09:36,392 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 18:09:36,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 06:09:36 BoogieIcfgContainer [2021-02-23 18:09:36,412 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 18:09:36,414 INFO L168 Benchmark]: Toolchain (without parser) took 4102.61 ms. Allocated memory was 155.2 MB in the beginning and 196.1 MB in the end (delta: 40.9 MB). Free memory was 130.8 MB in the beginning and 98.1 MB in the end (delta: 32.6 MB). Peak memory consumption was 74.1 MB. Max. memory is 8.0 GB. [2021-02-23 18:09:36,415 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 155.2 MB. Free memory is still 130.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 18:09:36,415 INFO L168 Benchmark]: CACSL2BoogieTranslator took 659.08 ms. Allocated memory is still 155.2 MB. Free memory was 129.6 MB in the beginning and 107.3 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2021-02-23 18:09:36,416 INFO L168 Benchmark]: Boogie Preprocessor took 168.06 ms. Allocated memory is still 155.2 MB. Free memory was 107.3 MB in the beginning and 136.3 MB in the end (delta: -29.0 MB). Peak memory consumption was 3.5 MB. Max. memory is 8.0 GB. [2021-02-23 18:09:36,417 INFO L168 Benchmark]: RCFGBuilder took 1015.14 ms. Allocated memory is still 155.2 MB. Free memory was 136.3 MB in the beginning and 86.0 MB in the end (delta: 50.3 MB). Peak memory consumption was 50.3 MB. Max. memory is 8.0 GB. [2021-02-23 18:09:36,418 INFO L168 Benchmark]: TraceAbstraction took 2241.64 ms. Allocated memory was 155.2 MB in the beginning and 196.1 MB in the end (delta: 40.9 MB). Free memory was 85.4 MB in the beginning and 98.1 MB in the end (delta: -12.7 MB). Peak memory consumption was 28.7 MB. Max. memory is 8.0 GB. [2021-02-23 18:09:36,421 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 155.2 MB. Free memory is still 130.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 659.08 ms. Allocated memory is still 155.2 MB. Free memory was 129.6 MB in the beginning and 107.3 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 168.06 ms. Allocated memory is still 155.2 MB. Free memory was 107.3 MB in the beginning and 136.3 MB in the end (delta: -29.0 MB). Peak memory consumption was 3.5 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1015.14 ms. Allocated memory is still 155.2 MB. Free memory was 136.3 MB in the beginning and 86.0 MB in the end (delta: 50.3 MB). Peak memory consumption was 50.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2241.64 ms. Allocated memory was 155.2 MB in the beginning and 196.1 MB in the end (delta: 40.9 MB). Free memory was 85.4 MB in the beginning and 98.1 MB in the end (delta: -12.7 MB). Peak memory consumption was 28.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1051]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1005] SLL* list = malloc(sizeof(SLL)); [L1006] list->next = ((void*)0) [L1007] list->prev = ((void*)0) [L1008] list->colour = BLACK [L1010] SLL* end = list; [L1013] COND FALSE !(__VERIFIER_nondet_int()) [L1036] end = ((void*)0) [L1037] end = list [L1040] COND FALSE !(!(((void*)0) != end)) [L1041] EXPR end->colour [L1041] COND FALSE !(!(BLACK == end->colour)) [L1043] COND TRUE ((void*)0) != end [L1045] EXPR end->colour [L1045] COND FALSE !(RED == end->colour) [L1051] EXPR end->next [L1051] COND TRUE !(end->next) [L1051] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 111 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.1s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 233 SDtfs, 539 SDslu, 245 SDs, 0 SdLazy, 389 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=106occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 70 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...