/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-circular-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 13:25:12,884 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 13:25:12,887 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 13:25:12,906 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 13:25:12,906 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 13:25:12,908 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 13:25:12,910 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 13:25:12,920 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 13:25:12,924 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 13:25:12,927 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 13:25:12,929 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 13:25:12,931 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 13:25:12,931 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 13:25:12,933 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 13:25:12,935 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 13:25:12,936 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 13:25:12,938 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 13:25:12,939 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 13:25:12,940 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 13:25:12,945 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 13:25:12,949 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 13:25:12,952 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 13:25:12,953 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 13:25:12,954 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 13:25:12,956 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-07 13:25:12,956 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-07 13:25:12,956 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-07 13:25:12,958 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-07 13:25:12,959 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-07 13:25:12,960 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-07 13:25:12,961 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-07 13:25:12,961 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-07 13:25:12,962 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-07 13:25:12,963 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-07 13:25:12,964 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-07 13:25:12,964 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-07 13:25:12,965 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-07 13:25:12,965 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-07 13:25:12,965 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 13:25:12,966 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 13:25:12,967 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 13:25:12,968 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-07 13:25:12,995 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 13:25:12,995 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 13:25:12,999 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 13:25:12,999 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 13:25:12,999 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 13:25:12,999 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 13:25:13,000 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 13:25:13,000 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 13:25:13,000 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 13:25:13,003 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 13:25:13,003 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 13:25:13,004 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 13:25:13,004 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 13:25:13,004 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 13:25:13,004 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 13:25:13,004 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-07 13:25:13,005 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 13:25:13,005 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 13:25:13,005 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 13:25:13,005 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 13:25:13,005 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-07 13:25:13,005 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 13:25:13,006 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-07 13:25:13,295 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 13:25:13,310 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 13:25:13,314 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 13:25:13,316 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 13:25:13,316 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 13:25:13,317 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-circular-1.i [2020-07-07 13:25:13,383 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7feacafd9/046090e302fe4f96b349c5baa2f14e76/FLAGe493a0f36 [2020-07-07 13:25:13,912 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 13:25:13,912 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-circular-1.i [2020-07-07 13:25:13,929 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7feacafd9/046090e302fe4f96b349c5baa2f14e76/FLAGe493a0f36 [2020-07-07 13:25:14,241 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7feacafd9/046090e302fe4f96b349c5baa2f14e76 [2020-07-07 13:25:14,250 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 13:25:14,252 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 13:25:14,253 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 13:25:14,253 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 13:25:14,257 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 13:25:14,258 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:25:14" (1/1) ... [2020-07-07 13:25:14,262 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31ad2c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:14, skipping insertion in model container [2020-07-07 13:25:14,262 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:25:14" (1/1) ... [2020-07-07 13:25:14,271 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 13:25:14,322 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 13:25:14,755 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:25:14,766 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 13:25:14,811 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:25:14,865 INFO L208 MainTranslator]: Completed translation [2020-07-07 13:25:14,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:14 WrapperNode [2020-07-07 13:25:14,866 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 13:25:14,867 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 13:25:14,867 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 13:25:14,867 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 13:25:14,881 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:14" (1/1) ... [2020-07-07 13:25:14,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:14" (1/1) ... [2020-07-07 13:25:14,898 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:14" (1/1) ... [2020-07-07 13:25:14,898 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:14" (1/1) ... [2020-07-07 13:25:14,922 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:14" (1/1) ... [2020-07-07 13:25:14,928 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:14" (1/1) ... [2020-07-07 13:25:14,931 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:14" (1/1) ... [2020-07-07 13:25:14,938 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 13:25:14,939 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 13:25:14,939 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 13:25:14,939 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 13:25:14,940 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:14" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 13:25:15,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 13:25:15,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 13:25:15,002 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 13:25:15,002 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-07 13:25:15,002 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-07 13:25:15,003 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-07 13:25:15,003 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-07 13:25:15,003 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-07 13:25:15,003 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-07 13:25:15,003 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-07 13:25:15,003 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-07 13:25:15,004 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-07 13:25:15,004 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-07 13:25:15,004 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-07 13:25:15,004 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-07 13:25:15,004 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-07 13:25:15,004 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-07 13:25:15,004 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-07 13:25:15,005 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-07 13:25:15,005 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-07 13:25:15,005 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-07 13:25:15,005 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-07 13:25:15,005 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-07 13:25:15,006 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-07 13:25:15,006 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-07 13:25:15,006 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-07 13:25:15,006 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-07 13:25:15,006 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-07 13:25:15,006 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-07 13:25:15,007 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-07 13:25:15,007 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-07 13:25:15,007 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-07 13:25:15,007 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-07 13:25:15,007 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-07 13:25:15,007 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-07 13:25:15,008 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-07 13:25:15,008 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-07 13:25:15,008 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-07 13:25:15,008 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-07 13:25:15,008 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-07 13:25:15,008 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-07 13:25:15,009 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-07 13:25:15,009 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-07 13:25:15,009 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-07 13:25:15,009 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-07 13:25:15,009 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-07 13:25:15,009 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-07 13:25:15,010 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-07 13:25:15,010 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-07 13:25:15,010 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-07 13:25:15,010 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-07 13:25:15,010 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-07 13:25:15,010 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-07 13:25:15,011 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-07 13:25:15,011 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-07 13:25:15,011 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-07 13:25:15,011 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-07 13:25:15,011 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-07 13:25:15,011 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-07 13:25:15,011 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-07 13:25:15,012 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-07 13:25:15,012 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-07-07 13:25:15,012 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-07 13:25:15,012 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-07 13:25:15,012 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-07-07 13:25:15,012 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-07 13:25:15,012 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-07 13:25:15,013 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-07-07 13:25:15,013 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-07 13:25:15,013 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-07 13:25:15,013 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-07 13:25:15,013 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-07 13:25:15,013 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-07 13:25:15,013 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-07 13:25:15,014 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-07 13:25:15,014 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-07 13:25:15,014 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-07 13:25:15,014 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-07 13:25:15,014 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-07 13:25:15,014 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-07 13:25:15,015 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-07 13:25:15,015 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-07 13:25:15,015 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-07 13:25:15,015 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-07 13:25:15,015 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-07 13:25:15,015 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-07 13:25:15,016 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-07 13:25:15,016 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-07 13:25:15,016 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-07 13:25:15,016 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-07 13:25:15,016 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-07 13:25:15,016 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-07 13:25:15,017 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-07 13:25:15,017 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-07 13:25:15,017 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-07 13:25:15,017 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-07 13:25:15,017 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-07 13:25:15,017 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-07 13:25:15,017 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-07 13:25:15,018 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-07 13:25:15,018 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-07 13:25:15,018 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-07 13:25:15,018 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-07 13:25:15,018 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-07 13:25:15,018 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-07 13:25:15,019 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-07 13:25:15,019 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 13:25:15,019 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 13:25:15,019 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 13:25:15,019 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-07 13:25:15,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-07 13:25:15,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-07 13:25:15,020 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-07 13:25:15,020 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-07 13:25:15,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-07 13:25:15,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 13:25:15,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 13:25:15,591 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 13:25:15,592 INFO L295 CfgBuilder]: Removed 9 assume(true) statements. [2020-07-07 13:25:15,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:25:15 BoogieIcfgContainer [2020-07-07 13:25:15,604 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 13:25:15,607 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 13:25:15,607 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 13:25:15,611 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 13:25:15,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 01:25:14" (1/3) ... [2020-07-07 13:25:15,612 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64c8e0ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:25:15, skipping insertion in model container [2020-07-07 13:25:15,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:14" (2/3) ... [2020-07-07 13:25:15,613 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64c8e0ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:25:15, skipping insertion in model container [2020-07-07 13:25:15,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:25:15" (3/3) ... [2020-07-07 13:25:15,616 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-circular-1.i [2020-07-07 13:25:15,627 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-07 13:25:15,636 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-07-07 13:25:15,652 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-07-07 13:25:15,677 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 13:25:15,677 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 13:25:15,678 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-07 13:25:15,678 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 13:25:15,678 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 13:25:15,678 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 13:25:15,679 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 13:25:15,679 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 13:25:15,696 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states. [2020-07-07 13:25:15,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-07 13:25:15,707 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:25:15,708 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] [2020-07-07 13:25:15,709 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:25:15,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:25:15,716 INFO L82 PathProgramCache]: Analyzing trace with hash -740897811, now seen corresponding path program 1 times [2020-07-07 13:25:15,725 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:25:15,726 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1983913251] [2020-07-07 13:25:15,726 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:25:15,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:15,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:16,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:25:16,002 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:25:16,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1983913251] [2020-07-07 13:25:16,011 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:25:16,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 13:25:16,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320758971] [2020-07-07 13:25:16,025 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 13:25:16,026 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:25:16,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 13:25:16,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:25:16,048 INFO L87 Difference]: Start difference. First operand 96 states. Second operand 3 states. [2020-07-07 13:25:16,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:25:16,300 INFO L93 Difference]: Finished difference Result 179 states and 215 transitions. [2020-07-07 13:25:16,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 13:25:16,301 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-07-07 13:25:16,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:25:16,313 INFO L225 Difference]: With dead ends: 179 [2020-07-07 13:25:16,313 INFO L226 Difference]: Without dead ends: 77 [2020-07-07 13:25:16,318 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 [2020-07-07 13:25:16,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-07-07 13:25:16,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2020-07-07 13:25:16,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-07-07 13:25:16,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 82 transitions. [2020-07-07 13:25:16,368 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 82 transitions. Word has length 20 [2020-07-07 13:25:16,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:25:16,369 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 82 transitions. [2020-07-07 13:25:16,369 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 13:25:16,369 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 82 transitions. [2020-07-07 13:25:16,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-07 13:25:16,370 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:25:16,371 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] [2020-07-07 13:25:16,371 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 13:25:16,371 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:25:16,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:25:16,372 INFO L82 PathProgramCache]: Analyzing trace with hash -2066269805, now seen corresponding path program 1 times [2020-07-07 13:25:16,372 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:25:16,372 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1693335145] [2020-07-07 13:25:16,373 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:25:16,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:16,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:16,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:25:16,657 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:25:16,658 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1693335145] [2020-07-07 13:25:16,658 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:25:16,658 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-07-07 13:25:16,661 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222746700] [2020-07-07 13:25:16,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-07 13:25:16,663 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:25:16,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-07 13:25:16,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-07-07 13:25:16,666 INFO L87 Difference]: Start difference. First operand 77 states and 82 transitions. Second operand 10 states. [2020-07-07 13:25:17,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:25:17,163 INFO L93 Difference]: Finished difference Result 155 states and 163 transitions. [2020-07-07 13:25:17,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-07 13:25:17,164 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 22 [2020-07-07 13:25:17,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:25:17,167 INFO L225 Difference]: With dead ends: 155 [2020-07-07 13:25:17,167 INFO L226 Difference]: Without dead ends: 153 [2020-07-07 13:25:17,169 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2020-07-07 13:25:17,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-07-07 13:25:17,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 85. [2020-07-07 13:25:17,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-07-07 13:25:17,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 91 transitions. [2020-07-07 13:25:17,196 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 91 transitions. Word has length 22 [2020-07-07 13:25:17,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:25:17,197 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 91 transitions. [2020-07-07 13:25:17,197 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-07 13:25:17,197 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 91 transitions. [2020-07-07 13:25:17,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-07-07 13:25:17,199 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:25:17,199 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] [2020-07-07 13:25:17,200 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 13:25:17,200 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:25:17,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:25:17,201 INFO L82 PathProgramCache]: Analyzing trace with hash 807179936, now seen corresponding path program 1 times [2020-07-07 13:25:17,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:25:17,202 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1154449338] [2020-07-07 13:25:17,202 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:25:17,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:17,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:17,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:25:17,434 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:25:17,434 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1154449338] [2020-07-07 13:25:17,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:25:17,435 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-07-07 13:25:17,435 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122763319] [2020-07-07 13:25:17,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-07 13:25:17,436 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:25:17,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-07 13:25:17,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-07-07 13:25:17,437 INFO L87 Difference]: Start difference. First operand 85 states and 91 transitions. Second operand 12 states. [2020-07-07 13:25:17,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:25:17,945 INFO L93 Difference]: Finished difference Result 122 states and 132 transitions. [2020-07-07 13:25:17,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-07 13:25:17,945 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 31 [2020-07-07 13:25:17,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:25:17,947 INFO L225 Difference]: With dead ends: 122 [2020-07-07 13:25:17,947 INFO L226 Difference]: Without dead ends: 120 [2020-07-07 13:25:17,948 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 [2020-07-07 13:25:17,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-07-07 13:25:17,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 105. [2020-07-07 13:25:17,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-07-07 13:25:17,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 114 transitions. [2020-07-07 13:25:17,973 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 114 transitions. Word has length 31 [2020-07-07 13:25:17,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:25:17,973 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 114 transitions. [2020-07-07 13:25:17,973 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-07 13:25:17,973 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 114 transitions. [2020-07-07 13:25:17,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-07-07 13:25:17,975 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:25:17,976 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] [2020-07-07 13:25:17,976 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-07 13:25:17,976 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:25:17,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:25:17,977 INFO L82 PathProgramCache]: Analyzing trace with hash -988969633, now seen corresponding path program 1 times [2020-07-07 13:25:17,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:25:17,977 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1657267408] [2020-07-07 13:25:17,977 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:25:17,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:18,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:18,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:25:18,054 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:25:18,054 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1657267408] [2020-07-07 13:25:18,054 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:25:18,055 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 13:25:18,055 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680520896] [2020-07-07 13:25:18,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 13:25:18,062 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:25:18,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 13:25:18,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 13:25:18,063 INFO L87 Difference]: Start difference. First operand 105 states and 114 transitions. Second operand 4 states. [2020-07-07 13:25:18,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:25:18,223 INFO L93 Difference]: Finished difference Result 234 states and 252 transitions. [2020-07-07 13:25:18,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-07 13:25:18,224 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2020-07-07 13:25:18,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:25:18,231 INFO L225 Difference]: With dead ends: 234 [2020-07-07 13:25:18,231 INFO L226 Difference]: Without dead ends: 166 [2020-07-07 13:25:18,232 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 13:25:18,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-07-07 13:25:18,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 125. [2020-07-07 13:25:18,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-07-07 13:25:18,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 135 transitions. [2020-07-07 13:25:18,273 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 135 transitions. Word has length 36 [2020-07-07 13:25:18,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:25:18,274 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 135 transitions. [2020-07-07 13:25:18,274 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 13:25:18,274 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 135 transitions. [2020-07-07 13:25:18,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-07-07 13:25:18,286 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:25:18,297 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] [2020-07-07 13:25:18,298 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-07 13:25:18,298 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:25:18,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:25:18,299 INFO L82 PathProgramCache]: Analyzing trace with hash 1230029085, now seen corresponding path program 1 times [2020-07-07 13:25:18,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:25:18,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1452274341] [2020-07-07 13:25:18,300 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:25:18,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:18,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:18,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:25:18,657 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:25:18,657 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1452274341] [2020-07-07 13:25:18,658 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:25:18,658 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-07-07 13:25:18,658 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641383003] [2020-07-07 13:25:18,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-07 13:25:18,659 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:25:18,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-07 13:25:18,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-07-07 13:25:18,660 INFO L87 Difference]: Start difference. First operand 125 states and 135 transitions. Second operand 14 states. [2020-07-07 13:25:19,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:25:19,426 INFO L93 Difference]: Finished difference Result 215 states and 228 transitions. [2020-07-07 13:25:19,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-07-07 13:25:19,427 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 37 [2020-07-07 13:25:19,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:25:19,429 INFO L225 Difference]: With dead ends: 215 [2020-07-07 13:25:19,429 INFO L226 Difference]: Without dead ends: 185 [2020-07-07 13:25:19,430 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=204, Invalid=666, Unknown=0, NotChecked=0, Total=870 [2020-07-07 13:25:19,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-07-07 13:25:19,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 133. [2020-07-07 13:25:19,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-07-07 13:25:19,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 143 transitions. [2020-07-07 13:25:19,454 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 143 transitions. Word has length 37 [2020-07-07 13:25:19,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:25:19,455 INFO L479 AbstractCegarLoop]: Abstraction has 133 states and 143 transitions. [2020-07-07 13:25:19,455 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-07 13:25:19,455 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 143 transitions. [2020-07-07 13:25:19,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-07-07 13:25:19,456 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:25:19,456 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:25:19,457 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-07 13:25:19,457 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:25:19,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:25:19,457 INFO L82 PathProgramCache]: Analyzing trace with hash 626563183, now seen corresponding path program 1 times [2020-07-07 13:25:19,458 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:25:19,458 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [448208714] [2020-07-07 13:25:19,458 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:25:19,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:19,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:19,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:25:19,840 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:25:19,841 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [448208714] [2020-07-07 13:25:19,841 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:25:19,841 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-07-07 13:25:19,842 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944611679] [2020-07-07 13:25:19,842 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-07-07 13:25:19,842 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:25:19,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-07-07 13:25:19,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2020-07-07 13:25:19,843 INFO L87 Difference]: Start difference. First operand 133 states and 143 transitions. Second operand 15 states. [2020-07-07 13:25:20,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:25:20,697 INFO L93 Difference]: Finished difference Result 227 states and 241 transitions. [2020-07-07 13:25:20,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-07-07 13:25:20,698 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 40 [2020-07-07 13:25:20,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:25:20,701 INFO L225 Difference]: With dead ends: 227 [2020-07-07 13:25:20,701 INFO L226 Difference]: Without dead ends: 225 [2020-07-07 13:25:20,702 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=147, Invalid=609, Unknown=0, NotChecked=0, Total=756 [2020-07-07 13:25:20,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2020-07-07 13:25:20,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 145. [2020-07-07 13:25:20,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-07-07 13:25:20,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 157 transitions. [2020-07-07 13:25:20,736 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 157 transitions. Word has length 40 [2020-07-07 13:25:20,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:25:20,737 INFO L479 AbstractCegarLoop]: Abstraction has 145 states and 157 transitions. [2020-07-07 13:25:20,737 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-07-07 13:25:20,740 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 157 transitions. [2020-07-07 13:25:20,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-07-07 13:25:20,741 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:25:20,741 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] [2020-07-07 13:25:20,741 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-07 13:25:20,742 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:25:20,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:25:20,742 INFO L82 PathProgramCache]: Analyzing trace with hash 1667005657, now seen corresponding path program 1 times [2020-07-07 13:25:20,742 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:25:20,743 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1980695797] [2020-07-07 13:25:20,743 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:25:20,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 13:25:20,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 13:25:20,841 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:25:20,841 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-07 13:25:20,842 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-07 13:25:20,842 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-07 13:25:20,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 01:25:20 BoogieIcfgContainer [2020-07-07 13:25:20,863 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 13:25:20,866 INFO L168 Benchmark]: Toolchain (without parser) took 6613.92 ms. Allocated memory was 139.5 MB in the beginning and 286.3 MB in the end (delta: 146.8 MB). Free memory was 102.1 MB in the beginning and 163.1 MB in the end (delta: -61.0 MB). Peak memory consumption was 85.8 MB. Max. memory is 7.1 GB. [2020-07-07 13:25:20,867 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 139.5 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-07-07 13:25:20,868 INFO L168 Benchmark]: CACSL2BoogieTranslator took 613.68 ms. Allocated memory was 139.5 MB in the beginning and 203.9 MB in the end (delta: 64.5 MB). Free memory was 101.9 MB in the beginning and 170.8 MB in the end (delta: -68.9 MB). Peak memory consumption was 26.5 MB. Max. memory is 7.1 GB. [2020-07-07 13:25:20,869 INFO L168 Benchmark]: Boogie Preprocessor took 71.31 ms. Allocated memory is still 203.9 MB. Free memory was 170.8 MB in the beginning and 168.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-07-07 13:25:20,870 INFO L168 Benchmark]: RCFGBuilder took 665.55 ms. Allocated memory is still 203.9 MB. Free memory was 168.1 MB in the beginning and 118.8 MB in the end (delta: 49.3 MB). Peak memory consumption was 49.3 MB. Max. memory is 7.1 GB. [2020-07-07 13:25:20,871 INFO L168 Benchmark]: TraceAbstraction took 5256.23 ms. Allocated memory was 203.9 MB in the beginning and 286.3 MB in the end (delta: 82.3 MB). Free memory was 118.2 MB in the beginning and 163.1 MB in the end (delta: -44.9 MB). Peak memory consumption was 37.4 MB. Max. memory is 7.1 GB. [2020-07-07 13:25:20,874 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 139.5 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 613.68 ms. Allocated memory was 139.5 MB in the beginning and 203.9 MB in the end (delta: 64.5 MB). Free memory was 101.9 MB in the beginning and 170.8 MB in the end (delta: -68.9 MB). Peak memory consumption was 26.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 71.31 ms. Allocated memory is still 203.9 MB. Free memory was 170.8 MB in the beginning and 168.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 665.55 ms. Allocated memory is still 203.9 MB. Free memory was 168.1 MB in the beginning and 118.8 MB in the end (delta: 49.3 MB). Peak memory consumption was 49.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5256.23 ms. Allocated memory was 203.9 MB in the beginning and 286.3 MB in the end (delta: 82.3 MB). Free memory was 118.2 MB in the beginning and 163.1 MB in the end (delta: -44.9 MB). Peak memory consumption was 37.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1023]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L986] SLL* head = malloc(sizeof(SLL)); [L987] head->next = head [L988] head->data = 0 [L990] SLL* x = head; [L991] int state = 1; [L994] COND FALSE !(__VERIFIER_nondet_int()) [L1016] x->data = state [L1018] EXPR head->next [L1018] x = head->next [L1019] COND FALSE !(!(((void*)0) != x)) [L1021] EXPR x->data [L1021] COND TRUE x->data != 0 [L1023] EXPR x->next [L1023] EXPR x->next->data [L1023] EXPR x->next->data != 0 && x->data > x->next->data [L1023] EXPR x->data [L1023] EXPR x->next [L1023] EXPR x->next->data [L1023] EXPR x->next->data != 0 && x->data > x->next->data [L1023] COND TRUE !(x->next->data != 0 && x->data > x->next->data) [L1023] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 96 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.1s, OverallIterations: 7, TraceHistogramMax: 2, AutomataDifference: 3.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 479 SDtfs, 1416 SDslu, 2129 SDs, 0 SdLazy, 1458 SolverSat, 102 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 115 GetRequests, 21 SyntacticMatches, 4 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=145occurred in iteration=6, 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, 256 StatesRemovedByMinimization, 5 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...