/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/forester-heap/dll-token-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 19:06:33,808 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 19:06:33,811 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 19:06:33,850 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 19:06:33,850 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 19:06:33,857 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 19:06:33,861 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 19:06:33,865 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 19:06:33,867 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 19:06:33,870 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 19:06:33,871 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 19:06:33,872 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 19:06:33,872 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 19:06:33,875 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 19:06:33,877 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 19:06:33,879 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 19:06:33,880 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 19:06:33,881 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 19:06:33,883 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 19:06:33,891 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 19:06:33,893 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 19:06:33,894 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 19:06:33,895 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 19:06:33,896 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 19:06:33,908 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 19:06:33,908 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 19:06:33,908 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 19:06:33,915 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 19:06:33,915 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 19:06:33,916 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 19:06:33,916 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 19:06:33,920 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 19:06:33,921 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 19:06:33,922 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 19:06:33,925 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 19:06:33,925 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 19:06:33,926 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 19:06:33,927 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 19:06:33,927 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 19:06:33,928 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 19:06:33,929 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 19:06:33,930 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 19:06:33,945 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 19:06:33,946 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 19:06:33,947 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 19:06:33,948 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 19:06:33,948 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 19:06:33,948 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 19:06:33,948 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 19:06:33,948 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 19:06:33,949 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 19:06:33,949 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 19:06:33,950 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 19:06:33,950 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 19:06:33,950 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 19:06:33,950 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 19:06:33,951 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 19:06:33,951 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 19:06:33,951 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 19:06:33,951 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 19:06:33,952 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 19:06:33,952 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 19:06:33,952 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 19:06:33,952 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 19:06:33,952 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-08-22 19:06:34,212 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 19:06:34,230 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 19:06:34,234 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 19:06:34,235 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 19:06:34,236 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 19:06:34,237 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-token-2.i [2020-08-22 19:06:34,316 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/afcf61b40/5386e71013844269a15f4e38b9604920/FLAGfe0ea1e6d [2020-08-22 19:06:34,889 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 19:06:34,890 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-token-2.i [2020-08-22 19:06:34,904 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/afcf61b40/5386e71013844269a15f4e38b9604920/FLAGfe0ea1e6d [2020-08-22 19:06:35,224 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/afcf61b40/5386e71013844269a15f4e38b9604920 [2020-08-22 19:06:35,234 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 19:06:35,235 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 19:06:35,239 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 19:06:35,239 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 19:06:35,243 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 19:06:35,244 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 07:06:35" (1/1) ... [2020-08-22 19:06:35,247 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@534a53c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:06:35, skipping insertion in model container [2020-08-22 19:06:35,247 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 07:06:35" (1/1) ... [2020-08-22 19:06:35,257 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 19:06:35,305 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 19:06:35,774 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 19:06:35,788 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 19:06:35,831 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 19:06:35,894 INFO L208 MainTranslator]: Completed translation [2020-08-22 19:06:35,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:06:35 WrapperNode [2020-08-22 19:06:35,896 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 19:06:35,896 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 19:06:35,897 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 19:06:35,897 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 19:06:35,909 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:06:35" (1/1) ... [2020-08-22 19:06:35,909 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:06:35" (1/1) ... [2020-08-22 19:06:35,927 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:06:35" (1/1) ... [2020-08-22 19:06:35,927 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:06:35" (1/1) ... [2020-08-22 19:06:35,946 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:06:35" (1/1) ... [2020-08-22 19:06:35,956 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:06:35" (1/1) ... [2020-08-22 19:06:35,961 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:06:35" (1/1) ... [2020-08-22 19:06:35,974 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 19:06:35,974 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 19:06:35,975 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 19:06:35,975 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 19:06:35,976 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:06:35" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 19:06:36,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 19:06:36,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 19:06:36,037 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 19:06:36,037 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-08-22 19:06:36,037 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-08-22 19:06:36,038 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-08-22 19:06:36,038 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-08-22 19:06:36,038 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-08-22 19:06:36,038 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-08-22 19:06:36,038 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-08-22 19:06:36,038 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-08-22 19:06:36,038 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-08-22 19:06:36,038 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-08-22 19:06:36,038 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-08-22 19:06:36,038 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-08-22 19:06:36,039 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-08-22 19:06:36,039 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-08-22 19:06:36,039 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-08-22 19:06:36,039 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-08-22 19:06:36,039 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-08-22 19:06:36,039 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-08-22 19:06:36,040 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-08-22 19:06:36,040 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-08-22 19:06:36,040 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-08-22 19:06:36,040 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-08-22 19:06:36,040 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-08-22 19:06:36,040 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-08-22 19:06:36,040 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-08-22 19:06:36,041 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-08-22 19:06:36,041 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-08-22 19:06:36,041 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-08-22 19:06:36,041 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-08-22 19:06:36,041 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-08-22 19:06:36,041 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-08-22 19:06:36,042 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-08-22 19:06:36,042 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-08-22 19:06:36,042 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-08-22 19:06:36,042 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-08-22 19:06:36,042 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-08-22 19:06:36,042 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-08-22 19:06:36,043 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-08-22 19:06:36,043 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-08-22 19:06:36,043 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-08-22 19:06:36,043 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-08-22 19:06:36,043 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-08-22 19:06:36,043 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-08-22 19:06:36,044 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-08-22 19:06:36,044 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-08-22 19:06:36,044 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-08-22 19:06:36,044 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-08-22 19:06:36,044 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-08-22 19:06:36,044 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-08-22 19:06:36,044 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-08-22 19:06:36,044 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 19:06:36,045 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-22 19:06:36,045 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-08-22 19:06:36,045 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 19:06:36,045 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-08-22 19:06:36,045 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-08-22 19:06:36,046 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-08-22 19:06:36,046 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-08-22 19:06:36,046 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-08-22 19:06:36,046 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 19:06:36,046 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-08-22 19:06:36,046 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-08-22 19:06:36,046 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-08-22 19:06:36,047 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-08-22 19:06:36,047 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-08-22 19:06:36,047 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-08-22 19:06:36,047 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-08-22 19:06:36,047 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-08-22 19:06:36,047 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-08-22 19:06:36,047 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-08-22 19:06:36,047 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-08-22 19:06:36,047 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-08-22 19:06:36,048 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-08-22 19:06:36,048 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-08-22 19:06:36,048 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-08-22 19:06:36,048 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-08-22 19:06:36,049 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-08-22 19:06:36,049 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-08-22 19:06:36,049 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-08-22 19:06:36,049 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-08-22 19:06:36,049 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-08-22 19:06:36,049 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-08-22 19:06:36,050 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-08-22 19:06:36,050 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-08-22 19:06:36,050 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-08-22 19:06:36,050 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-08-22 19:06:36,050 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-08-22 19:06:36,050 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-08-22 19:06:36,051 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-08-22 19:06:36,051 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-08-22 19:06:36,051 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-08-22 19:06:36,051 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-08-22 19:06:36,051 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-08-22 19:06:36,051 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-08-22 19:06:36,052 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-08-22 19:06:36,052 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-08-22 19:06:36,052 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-08-22 19:06:36,052 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-08-22 19:06:36,052 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-08-22 19:06:36,052 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-08-22 19:06:36,052 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-08-22 19:06:36,053 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-08-22 19:06:36,053 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-08-22 19:06:36,053 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 19:06:36,053 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 19:06:36,053 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 19:06:36,053 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 19:06:36,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 19:06:36,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 19:06:36,053 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 19:06:36,053 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 19:06:36,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 19:06:36,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 19:06:36,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 19:06:36,617 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 19:06:36,617 INFO L295 CfgBuilder]: Removed 15 assume(true) statements. [2020-08-22 19:06:36,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 07:06:36 BoogieIcfgContainer [2020-08-22 19:06:36,622 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 19:06:36,623 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 19:06:36,623 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 19:06:36,626 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 19:06:36,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 07:06:35" (1/3) ... [2020-08-22 19:06:36,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23dd3e23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 07:06:36, skipping insertion in model container [2020-08-22 19:06:36,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:06:35" (2/3) ... [2020-08-22 19:06:36,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23dd3e23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 07:06:36, skipping insertion in model container [2020-08-22 19:06:36,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 07:06:36" (3/3) ... [2020-08-22 19:06:36,630 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-token-2.i [2020-08-22 19:06:36,641 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 19:06:36,649 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-08-22 19:06:36,665 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-08-22 19:06:36,689 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 19:06:36,689 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 19:06:36,689 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-08-22 19:06:36,689 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 19:06:36,689 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 19:06:36,690 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 19:06:36,690 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 19:06:36,690 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 19:06:36,709 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states. [2020-08-22 19:06:36,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-22 19:06:36,720 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:06:36,722 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] [2020-08-22 19:06:36,723 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:06:36,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:06:36,733 INFO L82 PathProgramCache]: Analyzing trace with hash 536950687, now seen corresponding path program 1 times [2020-08-22 19:06:36,743 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:06:36,745 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1742766186] [2020-08-22 19:06:36,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:06:36,833 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:06:36,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:06:36,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:06:36,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:06:36,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:06:36,988 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1742766186] [2020-08-22 19:06:36,991 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:06:36,991 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 19:06:36,991 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609312953] [2020-08-22 19:06:36,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 19:06:36,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:06:37,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 19:06:37,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 19:06:37,015 INFO L87 Difference]: Start difference. First operand 101 states. Second operand 3 states. [2020-08-22 19:06:37,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:06:37,289 INFO L93 Difference]: Finished difference Result 189 states and 235 transitions. [2020-08-22 19:06:37,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 19:06:37,291 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-08-22 19:06:37,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:06:37,303 INFO L225 Difference]: With dead ends: 189 [2020-08-22 19:06:37,303 INFO L226 Difference]: Without dead ends: 90 [2020-08-22 19:06:37,308 INFO L675 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 [2020-08-22 19:06:37,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-08-22 19:06:37,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2020-08-22 19:06:37,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-08-22 19:06:37,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 92 transitions. [2020-08-22 19:06:37,358 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 92 transitions. Word has length 26 [2020-08-22 19:06:37,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:06:37,359 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 92 transitions. [2020-08-22 19:06:37,359 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 19:06:37,359 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 92 transitions. [2020-08-22 19:06:37,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-22 19:06:37,360 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:06:37,361 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] [2020-08-22 19:06:37,361 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 19:06:37,361 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:06:37,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:06:37,362 INFO L82 PathProgramCache]: Analyzing trace with hash -692885691, now seen corresponding path program 1 times [2020-08-22 19:06:37,362 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:06:37,362 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [449676991] [2020-08-22 19:06:37,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:06:37,367 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:06:37,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:06:37,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:06:37,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:06:37,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:06:37,655 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [449676991] [2020-08-22 19:06:37,656 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:06:37,656 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-22 19:06:37,656 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059617805] [2020-08-22 19:06:37,657 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 19:06:37,657 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:06:37,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 19:06:37,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-22 19:06:37,658 INFO L87 Difference]: Start difference. First operand 90 states and 92 transitions. Second operand 12 states. [2020-08-22 19:06:38,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:06:38,417 INFO L93 Difference]: Finished difference Result 174 states and 179 transitions. [2020-08-22 19:06:38,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 19:06:38,417 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2020-08-22 19:06:38,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:06:38,420 INFO L225 Difference]: With dead ends: 174 [2020-08-22 19:06:38,420 INFO L226 Difference]: Without dead ends: 172 [2020-08-22 19:06:38,422 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2020-08-22 19:06:38,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-08-22 19:06:38,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 103. [2020-08-22 19:06:38,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-08-22 19:06:38,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 106 transitions. [2020-08-22 19:06:38,443 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 106 transitions. Word has length 27 [2020-08-22 19:06:38,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:06:38,444 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 106 transitions. [2020-08-22 19:06:38,444 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 19:06:38,444 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 106 transitions. [2020-08-22 19:06:38,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-22 19:06:38,445 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:06:38,445 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] [2020-08-22 19:06:38,445 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 19:06:38,446 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:06:38,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:06:38,446 INFO L82 PathProgramCache]: Analyzing trace with hash 2098857180, now seen corresponding path program 1 times [2020-08-22 19:06:38,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:06:38,447 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1853239302] [2020-08-22 19:06:38,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:06:38,451 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:06:38,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:06:38,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:06:38,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:06:38,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:06:38,569 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1853239302] [2020-08-22 19:06:38,569 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:06:38,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 19:06:38,570 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174874573] [2020-08-22 19:06:38,570 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 19:06:38,570 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:06:38,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 19:06:38,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-22 19:06:38,571 INFO L87 Difference]: Start difference. First operand 103 states and 106 transitions. Second operand 6 states. [2020-08-22 19:06:38,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:06:38,837 INFO L93 Difference]: Finished difference Result 160 states and 164 transitions. [2020-08-22 19:06:38,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 19:06:38,838 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-08-22 19:06:38,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:06:38,839 INFO L225 Difference]: With dead ends: 160 [2020-08-22 19:06:38,839 INFO L226 Difference]: Without dead ends: 158 [2020-08-22 19:06:38,841 INFO L675 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 [2020-08-22 19:06:38,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-08-22 19:06:38,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 101. [2020-08-22 19:06:38,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-08-22 19:06:38,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 104 transitions. [2020-08-22 19:06:38,879 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 104 transitions. Word has length 28 [2020-08-22 19:06:38,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:06:38,880 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 104 transitions. [2020-08-22 19:06:38,880 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 19:06:38,880 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 104 transitions. [2020-08-22 19:06:38,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-08-22 19:06:38,882 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:06:38,882 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] [2020-08-22 19:06:38,882 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 19:06:38,884 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:06:38,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:06:38,885 INFO L82 PathProgramCache]: Analyzing trace with hash 578708441, now seen corresponding path program 1 times [2020-08-22 19:06:38,885 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:06:38,887 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [457195725] [2020-08-22 19:06:38,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:06:38,896 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:06:38,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:06:39,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:06:39,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:06:39,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:06:39,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [457195725] [2020-08-22 19:06:39,016 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:06:39,016 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 19:06:39,017 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189810855] [2020-08-22 19:06:39,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 19:06:39,017 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:06:39,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 19:06:39,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-22 19:06:39,018 INFO L87 Difference]: Start difference. First operand 101 states and 104 transitions. Second operand 6 states. [2020-08-22 19:06:39,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:06:39,240 INFO L93 Difference]: Finished difference Result 101 states and 104 transitions. [2020-08-22 19:06:39,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 19:06:39,241 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2020-08-22 19:06:39,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:06:39,243 INFO L225 Difference]: With dead ends: 101 [2020-08-22 19:06:39,243 INFO L226 Difference]: Without dead ends: 98 [2020-08-22 19:06:39,244 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-22 19:06:39,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-08-22 19:06:39,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2020-08-22 19:06:39,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-08-22 19:06:39,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 101 transitions. [2020-08-22 19:06:39,260 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 101 transitions. Word has length 35 [2020-08-22 19:06:39,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:06:39,261 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 101 transitions. [2020-08-22 19:06:39,261 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 19:06:39,261 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 101 transitions. [2020-08-22 19:06:39,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-08-22 19:06:39,262 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:06:39,262 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] [2020-08-22 19:06:39,263 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 19:06:39,263 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:06:39,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:06:39,263 INFO L82 PathProgramCache]: Analyzing trace with hash 666566073, now seen corresponding path program 1 times [2020-08-22 19:06:39,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:06:39,264 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [25407464] [2020-08-22 19:06:39,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:06:39,267 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:06:39,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:06:39,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:06:39,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:06:39,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:06:39,810 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [25407464] [2020-08-22 19:06:39,810 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:06:39,810 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-22 19:06:39,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040425073] [2020-08-22 19:06:39,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-22 19:06:39,811 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:06:39,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-22 19:06:39,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2020-08-22 19:06:39,812 INFO L87 Difference]: Start difference. First operand 98 states and 101 transitions. Second operand 14 states. [2020-08-22 19:06:40,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:06:40,607 INFO L93 Difference]: Finished difference Result 229 states and 235 transitions. [2020-08-22 19:06:40,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-22 19:06:40,607 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 35 [2020-08-22 19:06:40,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:06:40,609 INFO L225 Difference]: With dead ends: 229 [2020-08-22 19:06:40,609 INFO L226 Difference]: Without dead ends: 186 [2020-08-22 19:06:40,610 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=173, Invalid=477, Unknown=0, NotChecked=0, Total=650 [2020-08-22 19:06:40,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-08-22 19:06:40,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 113. [2020-08-22 19:06:40,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-08-22 19:06:40,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 116 transitions. [2020-08-22 19:06:40,632 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 116 transitions. Word has length 35 [2020-08-22 19:06:40,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:06:40,633 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 116 transitions. [2020-08-22 19:06:40,633 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-22 19:06:40,633 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 116 transitions. [2020-08-22 19:06:40,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-08-22 19:06:40,634 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:06:40,635 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:06:40,635 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 19:06:40,635 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:06:40,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:06:40,636 INFO L82 PathProgramCache]: Analyzing trace with hash 323200756, now seen corresponding path program 1 times [2020-08-22 19:06:40,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:06:40,636 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1526975083] [2020-08-22 19:06:40,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:06:40,678 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:06:40,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:06:40,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:06:40,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:06:40,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:06:40,921 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1526975083] [2020-08-22 19:06:40,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:06:40,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-08-22 19:06:40,923 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215688779] [2020-08-22 19:06:40,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-22 19:06:40,924 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:06:40,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-22 19:06:40,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2020-08-22 19:06:40,925 INFO L87 Difference]: Start difference. First operand 113 states and 116 transitions. Second operand 17 states. [2020-08-22 19:06:41,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:06:41,787 INFO L93 Difference]: Finished difference Result 146 states and 150 transitions. [2020-08-22 19:06:41,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 19:06:41,787 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 41 [2020-08-22 19:06:41,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:06:41,789 INFO L225 Difference]: With dead ends: 146 [2020-08-22 19:06:41,790 INFO L226 Difference]: Without dead ends: 144 [2020-08-22 19:06:41,791 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=196, Invalid=616, Unknown=0, NotChecked=0, Total=812 [2020-08-22 19:06:41,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-08-22 19:06:41,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 100. [2020-08-22 19:06:41,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-08-22 19:06:41,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 103 transitions. [2020-08-22 19:06:41,810 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 103 transitions. Word has length 41 [2020-08-22 19:06:41,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:06:41,810 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 103 transitions. [2020-08-22 19:06:41,810 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-22 19:06:41,810 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 103 transitions. [2020-08-22 19:06:41,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-08-22 19:06:41,812 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:06:41,812 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] [2020-08-22 19:06:41,812 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 19:06:41,812 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:06:41,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:06:41,813 INFO L82 PathProgramCache]: Analyzing trace with hash 957359950, now seen corresponding path program 1 times [2020-08-22 19:06:41,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:06:41,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [398249337] [2020-08-22 19:06:41,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:06:41,816 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:06:41,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 19:06:41,834 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 19:06:41,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 19:06:41,851 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 19:06:41,899 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 19:06:41,900 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 19:06:41,901 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 19:06:41,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 07:06:41 BoogieIcfgContainer [2020-08-22 19:06:41,937 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 19:06:41,947 INFO L168 Benchmark]: Toolchain (without parser) took 6704.12 ms. Allocated memory was 138.4 MB in the beginning and 285.2 MB in the end (delta: 146.8 MB). Free memory was 101.2 MB in the beginning and 197.5 MB in the end (delta: -96.3 MB). Peak memory consumption was 50.5 MB. Max. memory is 7.1 GB. [2020-08-22 19:06:41,948 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 138.4 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-22 19:06:41,950 INFO L168 Benchmark]: CACSL2BoogieTranslator took 657.00 ms. Allocated memory was 138.4 MB in the beginning and 203.9 MB in the end (delta: 65.5 MB). Free memory was 101.0 MB in the beginning and 170.5 MB in the end (delta: -69.6 MB). Peak memory consumption was 25.3 MB. Max. memory is 7.1 GB. [2020-08-22 19:06:41,951 INFO L168 Benchmark]: Boogie Preprocessor took 77.72 ms. Allocated memory is still 203.9 MB. Free memory was 170.5 MB in the beginning and 167.2 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. [2020-08-22 19:06:41,955 INFO L168 Benchmark]: RCFGBuilder took 647.37 ms. Allocated memory is still 203.9 MB. Free memory was 167.2 MB in the beginning and 115.7 MB in the end (delta: 51.4 MB). Peak memory consumption was 51.4 MB. Max. memory is 7.1 GB. [2020-08-22 19:06:41,956 INFO L168 Benchmark]: TraceAbstraction took 5314.56 ms. Allocated memory was 203.9 MB in the beginning and 285.2 MB in the end (delta: 81.3 MB). Free memory was 115.7 MB in the beginning and 197.5 MB in the end (delta: -81.7 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 19:06:41,963 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 138.4 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 657.00 ms. Allocated memory was 138.4 MB in the beginning and 203.9 MB in the end (delta: 65.5 MB). Free memory was 101.0 MB in the beginning and 170.5 MB in the end (delta: -69.6 MB). Peak memory consumption was 25.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 77.72 ms. Allocated memory is still 203.9 MB. Free memory was 170.5 MB in the beginning and 167.2 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 647.37 ms. Allocated memory is still 203.9 MB. Free memory was 167.2 MB in the beginning and 115.7 MB in the end (delta: 51.4 MB). Peak memory consumption was 51.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5314.56 ms. Allocated memory was 203.9 MB in the beginning and 285.2 MB in the end (delta: 81.3 MB). Free memory was 115.7 MB in the beginning and 197.5 MB in the end (delta: -81.7 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1026]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L993] SLL* head = malloc(sizeof(SLL)); [L994] head->next = ((void*)0) [L995] head->prev = ((void*)0) [L996] head->data = 0 [L998] SLL* x = head; [L1001] COND FALSE !(__VERIFIER_nondet_int()) [L1010] x->data = 1 [L1011] x->next = malloc(sizeof(SLL)) [L1012] EXPR x->next [L1012] x->next->prev = x [L1013] EXPR x->next [L1013] x->next->data = 2 [L1015] x = head [L1017] COND FALSE !(!(((void*)0) != x)) [L1019] EXPR x->data [L1019] COND FALSE !(1 != x->data) [L1024] EXPR x->data [L1024] COND FALSE !(!(1 == x->data)) [L1025] EXPR x->next [L1025] x = x->next [L1026] EXPR x->data [L1026] COND TRUE !(2 != x->data) [L1026] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 101 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.2s, OverallIterations: 7, TraceHistogramMax: 2, AutomataDifference: 3.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 425 SDtfs, 1341 SDslu, 1784 SDs, 0 SdLazy, 1954 SolverSat, 141 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 102 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=113occurred in iteration=5, 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, 6 MinimizatonAttempts, 243 StatesRemovedByMinimization, 4 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...