/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/forester-heap/dll-sorted-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 05:20:48,041 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 05:20:48,044 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 05:20:48,081 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-07 05:20:48,082 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-07 05:20:48,084 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-07 05:20:48,086 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-07 05:20:48,088 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-07 05:20:48,091 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-07 05:20:48,093 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-07 05:20:48,094 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-07 05:20:48,096 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-07 05:20:48,097 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 05:20:48,098 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 05:20:48,100 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 05:20:48,101 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 05:20:48,103 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 05:20:48,104 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 05:20:48,107 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 05:20:48,110 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 05:20:48,112 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 05:20:48,114 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 05:20:48,116 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 05:20:48,118 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 05:20:48,122 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-07 05:20:48,122 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-07 05:20:48,123 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-07 05:20:48,124 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-07 05:20:48,125 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-07 05:20:48,126 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-07 05:20:48,127 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-07 05:20:48,128 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-07 05:20:48,129 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-07 05:20:48,130 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-07 05:20:48,132 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-07 05:20:48,132 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-07 05:20:48,133 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-07 05:20:48,134 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-07 05:20:48,134 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 05:20:48,135 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 05:20:48,136 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 05:20:48,138 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-07 05:20:48,160 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 05:20:48,161 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 05:20:48,164 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 05:20:48,165 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 05:20:48,165 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 05:20:48,165 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 05:20:48,166 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 05:20:48,166 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 05:20:48,168 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 05:20:48,168 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 05:20:48,169 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 05:20:48,170 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 05:20:48,170 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 05:20:48,170 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 05:20:48,171 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 05:20:48,171 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 05:20:48,171 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 05:20:48,171 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 05:20:48,172 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 05:20:48,172 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 05:20:48,172 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 05:20:48,173 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 05:20:48,173 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-11-07 05:20:48,697 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 05:20:48,746 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 05:20:48,750 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 05:20:48,752 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 05:20:48,752 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 05:20:48,754 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-sorted-1.i [2020-11-07 05:20:48,860 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e84a14ab6/e5f8dc4a3dcb498dbbefcab8b0610b53/FLAGa53966d28 [2020-11-07 05:20:49,689 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 05:20:49,690 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-sorted-1.i [2020-11-07 05:20:49,719 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e84a14ab6/e5f8dc4a3dcb498dbbefcab8b0610b53/FLAGa53966d28 [2020-11-07 05:20:49,924 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e84a14ab6/e5f8dc4a3dcb498dbbefcab8b0610b53 [2020-11-07 05:20:49,927 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 05:20:49,938 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 05:20:49,941 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 05:20:49,941 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 05:20:49,946 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 05:20:49,948 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:20:49" (1/1) ... [2020-11-07 05:20:49,957 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12a0978a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:20:49, skipping insertion in model container [2020-11-07 05:20:49,958 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:20:49" (1/1) ... [2020-11-07 05:20:49,970 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 05:20:50,056 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 05:20:50,478 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 05:20:50,493 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 05:20:50,603 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 05:20:50,739 INFO L208 MainTranslator]: Completed translation [2020-11-07 05:20:50,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:20:50 WrapperNode [2020-11-07 05:20:50,740 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 05:20:50,741 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 05:20:50,742 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 05:20:50,742 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 05:20:50,759 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:20:50" (1/1) ... [2020-11-07 05:20:50,760 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:20:50" (1/1) ... [2020-11-07 05:20:50,778 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:20:50" (1/1) ... [2020-11-07 05:20:50,779 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:20:50" (1/1) ... [2020-11-07 05:20:50,801 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:20:50" (1/1) ... [2020-11-07 05:20:50,810 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:20:50" (1/1) ... [2020-11-07 05:20:50,815 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:20:50" (1/1) ... [2020-11-07 05:20:50,823 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 05:20:50,824 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 05:20:50,824 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 05:20:50,824 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 05:20:50,830 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:20:50" (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 [2020-11-07 05:20:50,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 05:20:50,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 05:20:50,941 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 05:20:50,941 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 05:20:50,941 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-11-07 05:20:50,942 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-11-07 05:20:50,943 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-11-07 05:20:50,943 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-11-07 05:20:50,943 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-11-07 05:20:50,943 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-11-07 05:20:50,943 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-11-07 05:20:50,944 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-11-07 05:20:50,944 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-11-07 05:20:50,944 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-11-07 05:20:50,945 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-11-07 05:20:50,945 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-11-07 05:20:50,945 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-11-07 05:20:50,946 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-11-07 05:20:50,946 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-11-07 05:20:50,947 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-11-07 05:20:50,947 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-11-07 05:20:50,947 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-11-07 05:20:50,951 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-11-07 05:20:50,951 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-11-07 05:20:50,951 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-11-07 05:20:50,951 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-11-07 05:20:50,951 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-11-07 05:20:50,952 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-11-07 05:20:50,952 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-11-07 05:20:50,952 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-11-07 05:20:50,952 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-11-07 05:20:50,952 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-11-07 05:20:50,952 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-11-07 05:20:50,953 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-11-07 05:20:50,953 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-11-07 05:20:50,953 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-11-07 05:20:50,953 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-11-07 05:20:50,953 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-11-07 05:20:50,953 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-11-07 05:20:50,953 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-11-07 05:20:50,954 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-11-07 05:20:50,954 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-11-07 05:20:50,954 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-11-07 05:20:50,954 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-11-07 05:20:50,954 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-11-07 05:20:50,954 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-11-07 05:20:50,955 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-11-07 05:20:50,955 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-11-07 05:20:50,955 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-11-07 05:20:50,955 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-11-07 05:20:50,955 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-11-07 05:20:50,955 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-11-07 05:20:50,955 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-11-07 05:20:50,956 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-11-07 05:20:50,956 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-07 05:20:50,956 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-11-07 05:20:50,956 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-11-07 05:20:50,956 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-11-07 05:20:50,957 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-11-07 05:20:50,957 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-11-07 05:20:50,957 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-11-07 05:20:50,957 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-11-07 05:20:50,958 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-11-07 05:20:50,959 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 05:20:50,959 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-11-07 05:20:50,959 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-11-07 05:20:50,959 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-11-07 05:20:50,959 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-11-07 05:20:50,959 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-11-07 05:20:50,960 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-11-07 05:20:50,960 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-11-07 05:20:50,961 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-11-07 05:20:50,961 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-11-07 05:20:50,961 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-11-07 05:20:50,961 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-11-07 05:20:50,961 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-11-07 05:20:50,962 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-11-07 05:20:50,962 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-11-07 05:20:50,962 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-11-07 05:20:50,962 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-11-07 05:20:50,963 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-11-07 05:20:50,963 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-11-07 05:20:50,964 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-11-07 05:20:50,964 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-11-07 05:20:50,965 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-11-07 05:20:50,965 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-11-07 05:20:50,966 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-11-07 05:20:50,966 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-11-07 05:20:50,967 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-11-07 05:20:50,967 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-11-07 05:20:50,968 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-11-07 05:20:50,968 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-11-07 05:20:50,968 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-11-07 05:20:50,969 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-11-07 05:20:50,969 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-11-07 05:20:50,969 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-11-07 05:20:50,970 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-11-07 05:20:50,970 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-11-07 05:20:50,970 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-11-07 05:20:50,970 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-11-07 05:20:50,970 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-11-07 05:20:50,970 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-11-07 05:20:50,971 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-11-07 05:20:50,971 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-11-07 05:20:50,971 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-11-07 05:20:50,971 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-11-07 05:20:50,971 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-11-07 05:20:50,972 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-07 05:20:50,972 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 05:20:50,972 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-11-07 05:20:50,972 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-11-07 05:20:50,972 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 05:20:50,972 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 05:20:50,973 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 05:20:50,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-07 05:20:50,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-07 05:20:50,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 05:20:50,973 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-07 05:20:50,973 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 05:20:50,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 05:20:50,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 05:20:50,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 05:20:50,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 05:20:51,903 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 05:20:51,904 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-11-07 05:20:51,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:20:51 BoogieIcfgContainer [2020-11-07 05:20:51,907 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 05:20:51,912 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 05:20:51,912 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 05:20:51,919 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 05:20:51,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 05:20:49" (1/3) ... [2020-11-07 05:20:51,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@389a02b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:20:51, skipping insertion in model container [2020-11-07 05:20:51,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:20:50" (2/3) ... [2020-11-07 05:20:51,921 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@389a02b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:20:51, skipping insertion in model container [2020-11-07 05:20:51,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:20:51" (3/3) ... [2020-11-07 05:20:51,923 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-sorted-1.i [2020-11-07 05:20:51,942 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 05:20:51,946 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 05:20:51,960 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 05:20:51,983 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 05:20:51,984 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 05:20:51,984 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-07 05:20:51,984 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 05:20:51,984 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 05:20:51,984 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 05:20:51,984 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 05:20:51,985 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 05:20:52,006 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states. [2020-11-07 05:20:52,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-07 05:20:52,017 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:20:52,027 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] [2020-11-07 05:20:52,027 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:20:52,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:20:52,033 INFO L82 PathProgramCache]: Analyzing trace with hash 968780831, now seen corresponding path program 1 times [2020-11-07 05:20:52,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:20:52,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1250318239] [2020-11-07 05:20:52,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:20:52,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:52,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:20:52,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:52,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 05:20:52,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1250318239] [2020-11-07 05:20:52,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 05:20:52,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-07 05:20:52,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070466530] [2020-11-07 05:20:52,471 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-07 05:20:52,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:20:52,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-07 05:20:52,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-07 05:20:52,500 INFO L87 Difference]: Start difference. First operand 166 states. Second operand 3 states. [2020-11-07 05:20:53,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:20:53,096 INFO L93 Difference]: Finished difference Result 284 states and 363 transitions. [2020-11-07 05:20:53,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-07 05:20:53,098 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-11-07 05:20:53,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:20:53,109 INFO L225 Difference]: With dead ends: 284 [2020-11-07 05:20:53,109 INFO L226 Difference]: Without dead ends: 145 [2020-11-07 05:20:53,114 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-07 05:20:53,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-11-07 05:20:53,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2020-11-07 05:20:53,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-11-07 05:20:53,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 160 transitions. [2020-11-07 05:20:53,167 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 160 transitions. Word has length 24 [2020-11-07 05:20:53,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:20:53,168 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 160 transitions. [2020-11-07 05:20:53,168 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-07 05:20:53,168 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 160 transitions. [2020-11-07 05:20:53,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-07 05:20:53,169 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:20:53,169 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] [2020-11-07 05:20:53,170 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 05:20:53,170 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:20:53,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:20:53,171 INFO L82 PathProgramCache]: Analyzing trace with hash -1721722334, now seen corresponding path program 1 times [2020-11-07 05:20:53,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:20:53,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [339724291] [2020-11-07 05:20:53,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:20:53,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:53,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:20:53,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:53,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 05:20:53,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [339724291] [2020-11-07 05:20:53,301 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 05:20:53,301 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 05:20:53,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128958822] [2020-11-07 05:20:53,306 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 05:20:53,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:20:53,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 05:20:53,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 05:20:53,308 INFO L87 Difference]: Start difference. First operand 145 states and 160 transitions. Second operand 4 states. [2020-11-07 05:20:53,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:20:53,675 INFO L93 Difference]: Finished difference Result 293 states and 326 transitions. [2020-11-07 05:20:53,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-07 05:20:53,676 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-11-07 05:20:53,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:20:53,679 INFO L225 Difference]: With dead ends: 293 [2020-11-07 05:20:53,679 INFO L226 Difference]: Without dead ends: 166 [2020-11-07 05:20:53,681 INFO L677 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 [2020-11-07 05:20:53,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-11-07 05:20:53,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 161. [2020-11-07 05:20:53,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-11-07 05:20:53,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 177 transitions. [2020-11-07 05:20:53,708 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 177 transitions. Word has length 26 [2020-11-07 05:20:53,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:20:53,708 INFO L481 AbstractCegarLoop]: Abstraction has 161 states and 177 transitions. [2020-11-07 05:20:53,708 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 05:20:53,708 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 177 transitions. [2020-11-07 05:20:53,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-11-07 05:20:53,710 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:20:53,710 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, 1, 1, 1, 1] [2020-11-07 05:20:53,710 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 05:20:53,711 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:20:53,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:20:53,711 INFO L82 PathProgramCache]: Analyzing trace with hash -1434116462, now seen corresponding path program 1 times [2020-11-07 05:20:53,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:20:53,712 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [307467478] [2020-11-07 05:20:53,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:20:53,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:53,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:20:53,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:53,925 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-07 05:20:53,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [307467478] [2020-11-07 05:20:53,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 05:20:53,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-07 05:20:53,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718520817] [2020-11-07 05:20:53,927 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-07 05:20:53,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:20:53,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-07 05:20:53,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-07 05:20:53,930 INFO L87 Difference]: Start difference. First operand 161 states and 177 transitions. Second operand 6 states. [2020-11-07 05:20:54,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:20:54,571 INFO L93 Difference]: Finished difference Result 262 states and 288 transitions. [2020-11-07 05:20:54,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-07 05:20:54,572 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 44 [2020-11-07 05:20:54,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:20:54,574 INFO L225 Difference]: With dead ends: 262 [2020-11-07 05:20:54,575 INFO L226 Difference]: Without dead ends: 258 [2020-11-07 05:20:54,575 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-11-07 05:20:54,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-11-07 05:20:54,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 160. [2020-11-07 05:20:54,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-11-07 05:20:54,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 175 transitions. [2020-11-07 05:20:54,627 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 175 transitions. Word has length 44 [2020-11-07 05:20:54,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:20:54,627 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 175 transitions. [2020-11-07 05:20:54,627 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-07 05:20:54,628 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 175 transitions. [2020-11-07 05:20:54,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-11-07 05:20:54,631 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:20:54,631 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:20:54,632 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 05:20:54,633 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:20:54,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:20:54,634 INFO L82 PathProgramCache]: Analyzing trace with hash 1540802085, now seen corresponding path program 1 times [2020-11-07 05:20:54,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:20:54,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [52997940] [2020-11-07 05:20:54,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:20:54,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:54,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:20:54,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:54,750 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-07 05:20:54,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [52997940] [2020-11-07 05:20:54,751 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 05:20:54,751 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 05:20:54,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119444965] [2020-11-07 05:20:54,751 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 05:20:54,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:20:54,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 05:20:54,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 05:20:54,753 INFO L87 Difference]: Start difference. First operand 160 states and 175 transitions. Second operand 4 states. [2020-11-07 05:20:55,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:20:55,040 INFO L93 Difference]: Finished difference Result 244 states and 269 transitions. [2020-11-07 05:20:55,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-07 05:20:55,041 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-11-07 05:20:55,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:20:55,043 INFO L225 Difference]: With dead ends: 244 [2020-11-07 05:20:55,043 INFO L226 Difference]: Without dead ends: 161 [2020-11-07 05:20:55,044 INFO L677 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 [2020-11-07 05:20:55,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-11-07 05:20:55,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2020-11-07 05:20:55,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-11-07 05:20:55,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 176 transitions. [2020-11-07 05:20:55,066 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 176 transitions. Word has length 67 [2020-11-07 05:20:55,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:20:55,067 INFO L481 AbstractCegarLoop]: Abstraction has 161 states and 176 transitions. [2020-11-07 05:20:55,067 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 05:20:55,067 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 176 transitions. [2020-11-07 05:20:55,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-11-07 05:20:55,069 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:20:55,069 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:20:55,069 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-07 05:20:55,069 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:20:55,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:20:55,070 INFO L82 PathProgramCache]: Analyzing trace with hash -1137007768, now seen corresponding path program 1 times [2020-11-07 05:20:55,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:20:55,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1385980567] [2020-11-07 05:20:55,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:20:55,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:55,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:20:55,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:55,258 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-07 05:20:55,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1385980567] [2020-11-07 05:20:55,259 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 05:20:55,259 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-07 05:20:55,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341549479] [2020-11-07 05:20:55,259 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-07 05:20:55,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:20:55,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-07 05:20:55,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-11-07 05:20:55,261 INFO L87 Difference]: Start difference. First operand 161 states and 176 transitions. Second operand 8 states. [2020-11-07 05:20:55,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:20:55,838 INFO L93 Difference]: Finished difference Result 271 states and 297 transitions. [2020-11-07 05:20:55,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-07 05:20:55,839 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 69 [2020-11-07 05:20:55,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:20:55,841 INFO L225 Difference]: With dead ends: 271 [2020-11-07 05:20:55,841 INFO L226 Difference]: Without dead ends: 187 [2020-11-07 05:20:55,843 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-11-07 05:20:55,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-11-07 05:20:55,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 169. [2020-11-07 05:20:55,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-11-07 05:20:55,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 185 transitions. [2020-11-07 05:20:55,867 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 185 transitions. Word has length 69 [2020-11-07 05:20:55,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:20:55,867 INFO L481 AbstractCegarLoop]: Abstraction has 169 states and 185 transitions. [2020-11-07 05:20:55,867 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-07 05:20:55,868 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 185 transitions. [2020-11-07 05:20:55,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-11-07 05:20:55,870 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:20:55,870 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:20:55,870 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-07 05:20:55,870 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:20:55,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:20:55,871 INFO L82 PathProgramCache]: Analyzing trace with hash -2050167254, now seen corresponding path program 1 times [2020-11-07 05:20:55,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:20:55,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [633872620] [2020-11-07 05:20:55,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:20:55,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 05:20:55,913 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 05:20:55,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 05:20:55,941 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 05:20:55,984 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-11-07 05:20:55,984 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-07 05:20:55,985 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-07 05:20:56,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 05:20:56 BoogieIcfgContainer [2020-11-07 05:20:56,078 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 05:20:56,083 INFO L168 Benchmark]: Toolchain (without parser) took 6148.12 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 125.7 MB in the beginning and 93.4 MB in the end (delta: 32.2 MB). Peak memory consumption was 63.3 MB. Max. memory is 8.0 GB. [2020-11-07 05:20:56,085 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 125.8 MB. Free memory was 105.3 MB in the beginning and 105.3 MB in the end (delta: 64.0 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 05:20:56,086 INFO L168 Benchmark]: CACSL2BoogieTranslator took 799.81 ms. Allocated memory is still 151.0 MB. Free memory was 125.1 MB in the beginning and 128.1 MB in the end (delta: -3.0 MB). Peak memory consumption was 21.3 MB. Max. memory is 8.0 GB. [2020-11-07 05:20:56,089 INFO L168 Benchmark]: Boogie Preprocessor took 81.64 ms. Allocated memory is still 151.0 MB. Free memory was 128.1 MB in the beginning and 125.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-11-07 05:20:56,090 INFO L168 Benchmark]: RCFGBuilder took 1083.38 ms. Allocated memory is still 151.0 MB. Free memory was 125.1 MB in the beginning and 104.1 MB in the end (delta: 21.0 MB). Peak memory consumption was 33.9 MB. Max. memory is 8.0 GB. [2020-11-07 05:20:56,091 INFO L168 Benchmark]: TraceAbstraction took 4166.15 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 103.6 MB in the beginning and 93.4 MB in the end (delta: 10.1 MB). Peak memory consumption was 40.6 MB. Max. memory is 8.0 GB. [2020-11-07 05:20:56,102 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 125.8 MB. Free memory was 105.3 MB in the beginning and 105.3 MB in the end (delta: 64.0 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 799.81 ms. Allocated memory is still 151.0 MB. Free memory was 125.1 MB in the beginning and 128.1 MB in the end (delta: -3.0 MB). Peak memory consumption was 21.3 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 81.64 ms. Allocated memory is still 151.0 MB. Free memory was 128.1 MB in the beginning and 125.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1083.38 ms. Allocated memory is still 151.0 MB. Free memory was 125.1 MB in the beginning and 104.1 MB in the end (delta: 21.0 MB). Peak memory consumption was 33.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4166.15 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 103.6 MB in the beginning and 93.4 MB in the end (delta: 10.1 MB). Peak memory consumption was 40.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 985]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L997] SLL* head = malloc(sizeof(SLL)); VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}] [L998] head->next = ((void*)0) VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}] [L999] head->prev = ((void*)0) VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1000] head->data = 0 VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1002] SLL* x = head; VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}] [L1003] int marked = 0; VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, marked=0, x={-1:0}] [L1006] COND TRUE __VERIFIER_nondet_int() || !marked VAL [__VERIFIER_nondet_int()=1, head={-1:0}, malloc(sizeof(SLL))={-1:0}, marked=0, x={-1:0}] [L1009] x->next = malloc(sizeof(SLL)) VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, marked=0, x={-1:0}] [L1010] EXPR x->next VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, marked=0, x={-1:0}, x->next={-2:0}] [L1010] x->next->prev = x VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, marked=0, x={-1:0}, x->next={-2:0}] [L1011] EXPR x->next VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, marked=0, x={-1:0}, x->next={-2:0}] [L1011] x = x->next VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, marked=0, x={-2:0}, x->next={-2:0}] [L1012] x->next = ((void*)0) VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, marked=0, x={-2:0}] [L1014] COND TRUE __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=1, head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, marked=0, x={-2:0}] [L1016] marked = 1 VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, marked=1, x={-2:0}] [L1019] COND TRUE \read(marked) VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, marked=1, x={-2:0}] [L1020] x->data = 1 VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, marked=1, x={-2:0}] [L1006] COND FALSE !(__VERIFIER_nondet_int() || !marked) VAL [__VERIFIER_nondet_int()=0, head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, marked=1, x={-2:0}] [L1025] x = head VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, marked=1, x={-1:0}] [L1027] COND FALSE !(!(((void*)0) != x)) VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, marked=1, x={-1:0}] [L1028] marked = 0 VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, marked=0, x={-1:0}] [L1030] EXPR x->next VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, marked=0, x={-1:0}, x->next={-2:0}] [L1030] x->next != ((void*)0) && x->next->data == 0 VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, marked=0, x={-1:0}, x->next={-2:0}, x->next != ((void*)0) && x->next->data == 0=1] [L1030] EXPR x->next VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, marked=0, x={-1:0}, x->next={-2:0}, x->next={-2:0}, x->next != ((void*)0) && x->next->data == 0=1] [L1030] EXPR x->next->data VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, marked=0, x={-1:0}, x->next={-2:0}, x->next={-2:0}, x->next != ((void*)0) && x->next->data == 0=1, x->next->data=1] [L1030] x->next != ((void*)0) && x->next->data == 0 VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, marked=0, x={-1:0}, x->next={-2:0}, x->next={-2:0}, x->next != ((void*)0) && x->next->data == 0=0, x->next->data=1] [L1030] COND FALSE !(x->next != ((void*)0) && x->next->data == 0) VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, marked=0, x={-1:0}, x->next={-2:0}, x->next={-2:0}, x->next != ((void*)0) && x->next->data == 0=0, x->next->data=1] [L1035] EXPR x->next VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, marked=0, x={-1:0}, x->next={-2:0}] [L1035] x->next != ((void*)0) && __VERIFIER_nondet_int() VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, marked=0, x={-1:0}, x->next={-2:0}, x->next != ((void*)0) && __VERIFIER_nondet_int()=1] [L1035] x->next != ((void*)0) && __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=1, head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, marked=0, x={-1:0}, x->next={-2:0}, x->next != ((void*)0) && __VERIFIER_nondet_int()=1] [L1035] COND TRUE x->next != ((void*)0) && __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=1, head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, marked=0, x={-1:0}, x->next={-2:0}, x->next != ((void*)0) && __VERIFIER_nondet_int()=1] [L1037] EXPR x->next VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, marked=0, x={-1:0}, x->next={-2:0}] [L1037] x = x->next VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, marked=0, x={-2:0}, x->next={-2:0}] [L1038] EXPR x->data VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, marked=0, x={-2:0}, x->data=1] [L1038] COND TRUE !(x->data != 1) VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, marked=0, x={-2:0}, x->data=1] [L1038] CALL reach_error() [L985] COND FALSE !(0) [L985] __assert_fail ("0", "dll-sorted-1.c", 16, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 166 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.0s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 759 SDtfs, 759 SDslu, 849 SDs, 0 SdLazy, 1006 SolverSat, 56 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=169occurred 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, 5 MinimizatonAttempts, 121 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 302 NumberOfCodeBlocks, 302 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 225 ConstructedInterpolants, 0 QuantifiedInterpolants, 29518 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 6/6 InterpolantCoveringCapability, 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...