/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/forester-heap/dll-token-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 20:38:30,666 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 20:38:30,669 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 20:38:30,705 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 20:38:30,706 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 20:38:30,707 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 20:38:30,709 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 20:38:30,712 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 20:38:30,714 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 20:38:30,715 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 20:38:30,717 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 20:38:30,718 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 20:38:30,719 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 20:38:30,720 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 20:38:30,721 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 20:38:30,723 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 20:38:30,724 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 20:38:30,725 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 20:38:30,727 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 20:38:30,730 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 20:38:30,732 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 20:38:30,733 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 20:38:30,735 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 20:38:30,736 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 20:38:30,739 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 20:38:30,739 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 20:38:30,740 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 20:38:30,741 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 20:38:30,741 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 20:38:30,743 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 20:38:30,743 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 20:38:30,750 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 20:38:30,751 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 20:38:30,756 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 20:38:30,758 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 20:38:30,759 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 20:38:30,784 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 20:38:30,785 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 20:38:30,785 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 20:38:30,786 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 20:38:30,788 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 20:38:30,789 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 20:38:30,819 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 20:38:30,820 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 20:38:30,822 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 20:38:30,823 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 20:38:30,824 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 20:38:30,824 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 20:38:30,825 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 20:38:30,825 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 20:38:30,825 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 20:38:30,825 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 20:38:30,826 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 20:38:30,826 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 20:38:30,827 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 20:38:30,827 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 20:38:30,828 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 20:38:30,828 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 20:38:30,828 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 20:38:30,828 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 20:38:30,829 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 20:38:30,829 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 20:38:30,829 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 20:38:30,829 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 20:38:30,830 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 20:38:31,229 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 20:38:31,263 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 20:38:31,266 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 20:38:31,268 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 20:38:31,269 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 20:38:31,270 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-token-2.i [2020-10-23 20:38:31,353 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fab2fe77/9fadb0a5b6154da29932b49efa2eefb3/FLAG47ade2dba [2020-10-23 20:38:31,963 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 20:38:31,963 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-token-2.i [2020-10-23 20:38:31,977 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fab2fe77/9fadb0a5b6154da29932b49efa2eefb3/FLAG47ade2dba [2020-10-23 20:38:32,277 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fab2fe77/9fadb0a5b6154da29932b49efa2eefb3 [2020-10-23 20:38:32,280 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 20:38:32,290 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 20:38:32,296 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 20:38:32,296 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 20:38:32,301 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 20:38:32,302 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:38:32" (1/1) ... [2020-10-23 20:38:32,310 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@186ed439 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:38:32, skipping insertion in model container [2020-10-23 20:38:32,310 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:38:32" (1/1) ... [2020-10-23 20:38:32,319 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 20:38:32,386 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 20:38:32,722 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:38:32,732 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 20:38:32,785 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:38:32,853 INFO L208 MainTranslator]: Completed translation [2020-10-23 20:38:32,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:38:32 WrapperNode [2020-10-23 20:38:32,854 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 20:38:32,855 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 20:38:32,855 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 20:38:32,855 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 20:38:32,870 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:38:32" (1/1) ... [2020-10-23 20:38:32,870 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:38:32" (1/1) ... [2020-10-23 20:38:32,886 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:38:32" (1/1) ... [2020-10-23 20:38:32,886 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:38:32" (1/1) ... [2020-10-23 20:38:32,906 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:38:32" (1/1) ... [2020-10-23 20:38:32,914 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:38:32" (1/1) ... [2020-10-23 20:38:32,918 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:38:32" (1/1) ... [2020-10-23 20:38:32,932 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 20:38:32,933 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 20:38:32,933 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 20:38:32,933 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 20:38:32,939 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:38:32" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 20:38:33,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 20:38:33,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 20:38:33,032 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 20:38:33,032 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 20:38:33,033 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-23 20:38:33,033 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-23 20:38:33,033 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-23 20:38:33,034 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-23 20:38:33,034 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-23 20:38:33,034 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-23 20:38:33,034 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-23 20:38:33,034 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-23 20:38:33,035 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-23 20:38:33,035 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-23 20:38:33,035 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-23 20:38:33,035 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-23 20:38:33,036 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-23 20:38:33,037 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-23 20:38:33,037 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-23 20:38:33,037 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-23 20:38:33,038 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-23 20:38:33,038 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-23 20:38:33,041 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-23 20:38:33,041 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-23 20:38:33,041 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-23 20:38:33,041 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-23 20:38:33,041 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-23 20:38:33,041 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-23 20:38:33,042 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-23 20:38:33,042 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-23 20:38:33,042 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-23 20:38:33,042 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-23 20:38:33,042 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-23 20:38:33,043 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-23 20:38:33,043 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-23 20:38:33,043 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-23 20:38:33,043 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-23 20:38:33,043 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-23 20:38:33,043 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-23 20:38:33,044 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-23 20:38:33,044 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-23 20:38:33,044 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-23 20:38:33,044 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-23 20:38:33,044 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-23 20:38:33,044 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-23 20:38:33,044 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-23 20:38:33,045 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-23 20:38:33,045 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-23 20:38:33,045 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-23 20:38:33,045 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-23 20:38:33,045 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-23 20:38:33,045 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-23 20:38:33,046 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-23 20:38:33,046 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-23 20:38:33,046 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 20:38:33,046 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-23 20:38:33,046 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-23 20:38:33,047 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-23 20:38:33,047 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-23 20:38:33,047 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-23 20:38:33,047 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-23 20:38:33,047 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-23 20:38:33,048 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-23 20:38:33,048 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 20:38:33,048 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-23 20:38:33,049 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-23 20:38:33,049 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-23 20:38:33,049 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-23 20:38:33,049 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-23 20:38:33,049 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-23 20:38:33,049 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-23 20:38:33,050 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-23 20:38:33,050 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-23 20:38:33,050 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-23 20:38:33,050 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-23 20:38:33,051 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-23 20:38:33,051 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-23 20:38:33,051 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-23 20:38:33,051 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-23 20:38:33,051 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-23 20:38:33,052 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-23 20:38:33,052 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-23 20:38:33,052 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-23 20:38:33,053 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-23 20:38:33,053 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-23 20:38:33,053 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-23 20:38:33,054 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-23 20:38:33,055 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-23 20:38:33,055 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-23 20:38:33,055 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-23 20:38:33,055 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-23 20:38:33,055 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-23 20:38:33,056 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-23 20:38:33,056 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-23 20:38:33,057 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-23 20:38:33,057 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-23 20:38:33,057 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-23 20:38:33,057 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-23 20:38:33,057 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-23 20:38:33,058 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-23 20:38:33,058 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-23 20:38:33,058 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-23 20:38:33,058 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-23 20:38:33,058 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-23 20:38:33,058 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-23 20:38:33,059 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-23 20:38:33,059 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-23 20:38:33,059 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 20:38:33,059 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 20:38:33,059 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-23 20:38:33,059 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-23 20:38:33,060 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 20:38:33,060 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 20:38:33,060 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 20:38:33,060 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 20:38:33,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-23 20:38:33,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 20:38:33,061 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-23 20:38:33,061 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 20:38:33,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 20:38:33,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 20:38:33,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 20:38:33,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 20:38:34,018 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 20:38:34,019 INFO L298 CfgBuilder]: Removed 15 assume(true) statements. [2020-10-23 20:38:34,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:38:34 BoogieIcfgContainer [2020-10-23 20:38:34,023 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 20:38:34,025 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 20:38:34,025 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 20:38:34,028 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 20:38:34,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:38:32" (1/3) ... [2020-10-23 20:38:34,030 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72ccb8c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:38:34, skipping insertion in model container [2020-10-23 20:38:34,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:38:32" (2/3) ... [2020-10-23 20:38:34,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72ccb8c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:38:34, skipping insertion in model container [2020-10-23 20:38:34,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:38:34" (3/3) ... [2020-10-23 20:38:34,033 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-token-2.i [2020-10-23 20:38:34,047 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 20:38:34,053 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 20:38:34,068 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 20:38:34,107 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 20:38:34,107 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 20:38:34,108 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 20:38:34,108 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 20:38:34,108 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 20:38:34,109 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 20:38:34,110 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 20:38:34,113 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 20:38:34,137 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states. [2020-10-23 20:38:34,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-23 20:38:34,154 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:38:34,163 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] [2020-10-23 20:38:34,164 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:38:34,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:38:34,173 INFO L82 PathProgramCache]: Analyzing trace with hash 973808868, now seen corresponding path program 1 times [2020-10-23 20:38:34,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:38:34,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1744644637] [2020-10-23 20:38:34,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:38:34,288 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:38:34,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:34,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:38:34,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:34,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:38:34,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1744644637] [2020-10-23 20:38:34,534 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:38:34,535 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-23 20:38:34,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004671359] [2020-10-23 20:38:34,540 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 20:38:34,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:38:34,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 20:38:34,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 20:38:34,557 INFO L87 Difference]: Start difference. First operand 111 states. Second operand 3 states. [2020-10-23 20:38:34,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:38:34,877 INFO L93 Difference]: Finished difference Result 196 states and 255 transitions. [2020-10-23 20:38:34,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 20:38:34,880 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2020-10-23 20:38:34,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:38:34,890 INFO L225 Difference]: With dead ends: 196 [2020-10-23 20:38:34,890 INFO L226 Difference]: Without dead ends: 91 [2020-10-23 20:38:34,895 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 [2020-10-23 20:38:34,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-23 20:38:34,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2020-10-23 20:38:34,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-23 20:38:34,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 98 transitions. [2020-10-23 20:38:34,948 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 98 transitions. Word has length 32 [2020-10-23 20:38:34,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:38:34,949 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 98 transitions. [2020-10-23 20:38:34,949 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 20:38:34,949 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 98 transitions. [2020-10-23 20:38:34,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-23 20:38:34,951 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:38:34,951 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] [2020-10-23 20:38:34,951 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 20:38:34,952 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:38:34,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:38:34,953 INFO L82 PathProgramCache]: Analyzing trace with hash -1863792175, now seen corresponding path program 1 times [2020-10-23 20:38:34,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:38:34,953 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [867256611] [2020-10-23 20:38:34,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:38:34,959 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:38:35,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:35,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:38:35,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:35,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:38:35,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [867256611] [2020-10-23 20:38:35,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:38:35,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-23 20:38:35,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566309931] [2020-10-23 20:38:35,333 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-23 20:38:35,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:38:35,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-23 20:38:35,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-10-23 20:38:35,340 INFO L87 Difference]: Start difference. First operand 91 states and 98 transitions. Second operand 12 states. [2020-10-23 20:38:36,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:38:36,331 INFO L93 Difference]: Finished difference Result 174 states and 187 transitions. [2020-10-23 20:38:36,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-23 20:38:36,332 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 33 [2020-10-23 20:38:36,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:38:36,334 INFO L225 Difference]: With dead ends: 174 [2020-10-23 20:38:36,335 INFO L226 Difference]: Without dead ends: 170 [2020-10-23 20:38:36,336 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2020-10-23 20:38:36,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-23 20:38:36,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 104. [2020-10-23 20:38:36,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-23 20:38:36,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 112 transitions. [2020-10-23 20:38:36,358 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 112 transitions. Word has length 33 [2020-10-23 20:38:36,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:38:36,359 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 112 transitions. [2020-10-23 20:38:36,359 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-23 20:38:36,359 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 112 transitions. [2020-10-23 20:38:36,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-23 20:38:36,360 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:38:36,361 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:38:36,361 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 20:38:36,361 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:38:36,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:38:36,362 INFO L82 PathProgramCache]: Analyzing trace with hash 858838049, now seen corresponding path program 1 times [2020-10-23 20:38:36,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:38:36,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [643861138] [2020-10-23 20:38:36,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:38:36,367 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:38:36,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:36,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:38:36,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:36,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:38:36,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [643861138] [2020-10-23 20:38:36,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:38:36,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-23 20:38:36,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267549804] [2020-10-23 20:38:36,481 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-23 20:38:36,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:38:36,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-23 20:38:36,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-23 20:38:36,482 INFO L87 Difference]: Start difference. First operand 104 states and 112 transitions. Second operand 6 states. [2020-10-23 20:38:36,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:38:36,980 INFO L93 Difference]: Finished difference Result 160 states and 172 transitions. [2020-10-23 20:38:36,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-23 20:38:36,980 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2020-10-23 20:38:36,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:38:36,983 INFO L225 Difference]: With dead ends: 160 [2020-10-23 20:38:36,983 INFO L226 Difference]: Without dead ends: 156 [2020-10-23 20:38:36,983 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 [2020-10-23 20:38:36,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-10-23 20:38:37,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 103. [2020-10-23 20:38:37,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-23 20:38:37,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 110 transitions. [2020-10-23 20:38:37,006 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 110 transitions. Word has length 34 [2020-10-23 20:38:37,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:38:37,006 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 110 transitions. [2020-10-23 20:38:37,006 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-23 20:38:37,006 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 110 transitions. [2020-10-23 20:38:37,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-23 20:38:37,008 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:38:37,008 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] [2020-10-23 20:38:37,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 20:38:37,008 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:38:37,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:38:37,009 INFO L82 PathProgramCache]: Analyzing trace with hash -1737930605, now seen corresponding path program 1 times [2020-10-23 20:38:37,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:38:37,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1849922111] [2020-10-23 20:38:37,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:38:37,015 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:38:37,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:37,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:38:37,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:37,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:38:37,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1849922111] [2020-10-23 20:38:37,125 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:38:37,125 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-23 20:38:37,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305084834] [2020-10-23 20:38:37,126 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-23 20:38:37,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:38:37,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-23 20:38:37,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-23 20:38:37,127 INFO L87 Difference]: Start difference. First operand 103 states and 110 transitions. Second operand 6 states. [2020-10-23 20:38:37,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:38:37,448 INFO L93 Difference]: Finished difference Result 106 states and 112 transitions. [2020-10-23 20:38:37,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-23 20:38:37,449 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 41 [2020-10-23 20:38:37,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:38:37,451 INFO L225 Difference]: With dead ends: 106 [2020-10-23 20:38:37,451 INFO L226 Difference]: Without dead ends: 101 [2020-10-23 20:38:37,452 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-23 20:38:37,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-10-23 20:38:37,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2020-10-23 20:38:37,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-23 20:38:37,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 107 transitions. [2020-10-23 20:38:37,488 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 107 transitions. Word has length 41 [2020-10-23 20:38:37,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:38:37,491 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 107 transitions. [2020-10-23 20:38:37,491 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-23 20:38:37,491 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 107 transitions. [2020-10-23 20:38:37,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-23 20:38:37,492 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:38:37,493 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] [2020-10-23 20:38:37,495 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 20:38:37,496 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:38:37,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:38:37,496 INFO L82 PathProgramCache]: Analyzing trace with hash 1088898187, now seen corresponding path program 1 times [2020-10-23 20:38:37,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:38:37,497 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [884516427] [2020-10-23 20:38:37,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:38:37,506 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:38:37,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:38,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:38:38,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:38,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:38:38,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [884516427] [2020-10-23 20:38:38,128 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:38:38,128 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-23 20:38:38,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376535761] [2020-10-23 20:38:38,129 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-23 20:38:38,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:38:38,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-23 20:38:38,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2020-10-23 20:38:38,130 INFO L87 Difference]: Start difference. First operand 101 states and 107 transitions. Second operand 14 states. [2020-10-23 20:38:39,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:38:39,072 INFO L93 Difference]: Finished difference Result 227 states and 243 transitions. [2020-10-23 20:38:39,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-23 20:38:39,073 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 41 [2020-10-23 20:38:39,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:38:39,075 INFO L225 Difference]: With dead ends: 227 [2020-10-23 20:38:39,075 INFO L226 Difference]: Without dead ends: 184 [2020-10-23 20:38:39,077 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=161, Invalid=439, Unknown=0, NotChecked=0, Total=600 [2020-10-23 20:38:39,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-10-23 20:38:39,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 116. [2020-10-23 20:38:39,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-23 20:38:39,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 122 transitions. [2020-10-23 20:38:39,118 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 122 transitions. Word has length 41 [2020-10-23 20:38:39,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:38:39,119 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 122 transitions. [2020-10-23 20:38:39,119 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-23 20:38:39,119 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 122 transitions. [2020-10-23 20:38:39,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-23 20:38:39,131 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:38:39,131 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:38:39,132 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-23 20:38:39,132 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:38:39,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:38:39,133 INFO L82 PathProgramCache]: Analyzing trace with hash -1798744832, now seen corresponding path program 1 times [2020-10-23 20:38:39,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:38:39,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [311264488] [2020-10-23 20:38:39,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:38:39,485 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-23 20:38:39,564 INFO L441 ElimStorePlain]: Different costs {2=[|v_#memory_$Pointer$.base_32|, |v_#memory_$Pointer$.offset_32|], 4=[|v_#memory_int_33|]} [2020-10-23 20:38:39,582 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:39,591 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:40,098 WARN L193 SmtUtils]: Spent 506.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-23 20:38:40,099 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:38:40,115 INFO L545 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:40,127 INFO L545 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:40,549 WARN L193 SmtUtils]: Spent 420.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-23 20:38:40,550 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:38:40,566 INFO L545 ElimStorePlain]: Start of recursive call 6: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:40,585 INFO L545 ElimStorePlain]: Start of recursive call 7: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:41,114 WARN L193 SmtUtils]: Spent 528.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-23 20:38:41,115 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:38:41,119 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-2 vars, End of recursive call: 6 dim-0 vars, and 2 xjuncts. [2020-10-23 20:38:41,119 INFO L244 ElimStorePlain]: Needed 7 recursive calls to eliminate 3 variables, input treesize:619, output treesize:573 [2020-10-23 20:38:41,602 WARN L193 SmtUtils]: Spent 479.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-23 20:38:41,986 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 112 [2020-10-23 20:38:42,018 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:42,149 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-10-23 20:38:42,150 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:38:42,160 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:42,277 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-10-23 20:38:42,278 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:38:42,279 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:42,280 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:295, output treesize:313 [2020-10-23 20:38:42,393 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-10-23 20:38:42,791 WARN L193 SmtUtils]: Spent 393.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 111 [2020-10-23 20:38:42,817 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:42,932 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-23 20:38:42,932 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:38:42,939 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:43,035 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:38:43,036 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:43,037 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:295, output treesize:313 [2020-10-23 20:38:43,352 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-23 20:38:43,371 INFO L441 ElimStorePlain]: Different costs {2=[|v_#memory_int_44|], 4=[|v_#memory_$Pointer$.offset_45|, |v_#memory_$Pointer$.base_45|]} [2020-10-23 20:38:43,379 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:43,389 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:43,802 WARN L193 SmtUtils]: Spent 412.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-23 20:38:43,803 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:38:43,813 INFO L545 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:43,831 INFO L545 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:44,217 WARN L193 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-23 20:38:44,217 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:38:44,231 INFO L545 ElimStorePlain]: Start of recursive call 6: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:44,243 INFO L545 ElimStorePlain]: Start of recursive call 7: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:44,633 WARN L193 SmtUtils]: Spent 388.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-10-23 20:38:44,633 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:38:44,636 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-2 vars, End of recursive call: 6 dim-0 vars, and 2 xjuncts. [2020-10-23 20:38:44,636 INFO L244 ElimStorePlain]: Needed 7 recursive calls to eliminate 3 variables, input treesize:387, output treesize:363 [2020-10-23 20:38:45,040 WARN L193 SmtUtils]: Spent 402.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-10-23 20:38:45,260 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-23 20:38:45,273 INFO L441 ElimStorePlain]: Different costs {2=[|v_#memory_int_48|], 4=[|v_#memory_$Pointer$.base_49|, |v_#memory_$Pointer$.offset_49|]} [2020-10-23 20:38:45,287 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:45,296 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:45,693 WARN L193 SmtUtils]: Spent 396.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-23 20:38:45,694 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:38:45,705 INFO L545 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:45,714 INFO L545 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:46,122 WARN L193 SmtUtils]: Spent 407.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-23 20:38:46,123 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:38:46,135 INFO L545 ElimStorePlain]: Start of recursive call 6: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:46,149 INFO L545 ElimStorePlain]: Start of recursive call 7: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:46,622 WARN L193 SmtUtils]: Spent 472.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-10-23 20:38:46,622 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:38:46,624 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-2 vars, End of recursive call: 6 dim-0 vars, and 2 xjuncts. [2020-10-23 20:38:46,625 INFO L244 ElimStorePlain]: Needed 7 recursive calls to eliminate 3 variables, input treesize:387, output treesize:363 [2020-10-23 20:38:47,088 WARN L193 SmtUtils]: Spent 459.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-10-23 20:38:47,293 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-23 20:38:47,302 INFO L441 ElimStorePlain]: Different costs {2=[|v_#memory_$Pointer$.base_52|, |v_#memory_$Pointer$.offset_52|], 4=[|v_#memory_int_53|]} [2020-10-23 20:38:47,311 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:47,319 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:47,695 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-23 20:38:47,697 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:38:47,707 INFO L545 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:47,717 INFO L545 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:48,023 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-10-23 20:38:48,024 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:38:48,033 INFO L545 ElimStorePlain]: Start of recursive call 6: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:48,043 INFO L545 ElimStorePlain]: Start of recursive call 7: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:48,453 WARN L193 SmtUtils]: Spent 409.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-23 20:38:48,454 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:38:48,456 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-2 vars, End of recursive call: 6 dim-0 vars, and 2 xjuncts. [2020-10-23 20:38:48,457 INFO L244 ElimStorePlain]: Needed 7 recursive calls to eliminate 3 variables, input treesize:463, output treesize:409 [2020-10-23 20:38:48,849 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-23 20:38:49,073 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-23 20:38:49,089 INFO L441 ElimStorePlain]: Different costs {2=[|v_#memory_int_56|], 4=[|v_#memory_$Pointer$.offset_57|, |v_#memory_$Pointer$.base_57|]} [2020-10-23 20:38:49,097 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:49,105 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:49,565 WARN L193 SmtUtils]: Spent 459.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-23 20:38:49,567 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:38:49,579 INFO L545 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:49,591 INFO L545 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:50,078 WARN L193 SmtUtils]: Spent 486.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-10-23 20:38:50,078 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:38:50,090 INFO L545 ElimStorePlain]: Start of recursive call 6: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:50,105 INFO L545 ElimStorePlain]: Start of recursive call 7: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:50,628 WARN L193 SmtUtils]: Spent 522.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-23 20:38:50,628 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:38:50,631 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-2 vars, End of recursive call: 6 dim-0 vars, and 2 xjuncts. [2020-10-23 20:38:50,631 INFO L244 ElimStorePlain]: Needed 7 recursive calls to eliminate 3 variables, input treesize:399, output treesize:375 [2020-10-23 20:38:51,085 WARN L193 SmtUtils]: Spent 450.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-23 20:38:51,455 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 111 [2020-10-23 20:38:51,471 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:51,598 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-23 20:38:51,599 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:38:51,606 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:51,728 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-10-23 20:38:51,728 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:38:51,730 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:51,730 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:295, output treesize:313 [2020-10-23 20:38:51,860 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-10-23 20:38:52,091 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-23 20:38:52,100 INFO L441 ElimStorePlain]: Different costs {2=[|v_#memory_int_64|], 4=[|v_#memory_$Pointer$.base_65|, |v_#memory_$Pointer$.offset_65|]} [2020-10-23 20:38:52,108 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:52,116 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:52,565 WARN L193 SmtUtils]: Spent 448.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-23 20:38:52,565 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:38:52,576 INFO L545 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:52,584 INFO L545 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:53,066 WARN L193 SmtUtils]: Spent 481.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-10-23 20:38:53,067 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:38:53,079 INFO L545 ElimStorePlain]: Start of recursive call 6: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:53,091 INFO L545 ElimStorePlain]: Start of recursive call 7: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:53,551 WARN L193 SmtUtils]: Spent 458.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-23 20:38:53,552 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:38:53,554 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-2 vars, End of recursive call: 6 dim-0 vars, and 2 xjuncts. [2020-10-23 20:38:53,555 INFO L244 ElimStorePlain]: Needed 7 recursive calls to eliminate 3 variables, input treesize:399, output treesize:375 [2020-10-23 20:38:54,084 WARN L193 SmtUtils]: Spent 528.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-23 20:38:54,299 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-23 20:38:54,306 INFO L441 ElimStorePlain]: Different costs {2=[|v_#memory_int_68|], 4=[|v_#memory_$Pointer$.offset_69|, |v_#memory_$Pointer$.base_69|]} [2020-10-23 20:38:54,319 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:54,326 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:54,822 WARN L193 SmtUtils]: Spent 494.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-23 20:38:54,822 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:38:54,833 INFO L545 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:54,841 INFO L545 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:55,317 WARN L193 SmtUtils]: Spent 476.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-10-23 20:38:55,318 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:38:55,333 INFO L545 ElimStorePlain]: Start of recursive call 6: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:55,345 INFO L545 ElimStorePlain]: Start of recursive call 7: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:55,818 WARN L193 SmtUtils]: Spent 472.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-23 20:38:55,818 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:38:55,820 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-2 vars, End of recursive call: 6 dim-0 vars, and 2 xjuncts. [2020-10-23 20:38:55,821 INFO L244 ElimStorePlain]: Needed 7 recursive calls to eliminate 3 variables, input treesize:399, output treesize:375 [2020-10-23 20:38:56,308 WARN L193 SmtUtils]: Spent 485.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-23 20:38:56,539 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-23 20:38:56,559 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:56,567 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:57,059 WARN L193 SmtUtils]: Spent 490.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-23 20:38:57,059 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:38:57,075 INFO L545 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:57,085 INFO L545 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:57,618 WARN L193 SmtUtils]: Spent 532.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-10-23 20:38:57,619 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:38:57,620 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 4 dim-0 vars, and 2 xjuncts. [2020-10-23 20:38:57,621 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:599, output treesize:635 [2020-10-23 20:38:58,122 WARN L193 SmtUtils]: Spent 499.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-10-23 20:38:58,503 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 111 [2020-10-23 20:38:58,517 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:58,653 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-23 20:38:58,653 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:38:58,660 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:58,775 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-10-23 20:38:58,776 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:38:58,777 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:58,777 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:295, output treesize:313 [2020-10-23 20:38:58,894 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-10-23 20:38:59,094 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-23 20:38:59,113 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:59,122 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:59,492 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-23 20:38:59,494 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:38:59,510 INFO L545 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:59,518 INFO L545 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:59,921 WARN L193 SmtUtils]: Spent 402.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-10-23 20:38:59,922 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:38:59,923 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 4 dim-0 vars, and 2 xjuncts. [2020-10-23 20:38:59,923 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:599, output treesize:635 [2020-10-23 20:39:00,351 WARN L193 SmtUtils]: Spent 425.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-10-23 20:39:00,364 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:39:00,368 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:39:00,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:39:00,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:39:00,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:39:00,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:39:00,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [311264488] [2020-10-23 20:39:00,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:39:00,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-10-23 20:39:00,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637574808] [2020-10-23 20:39:00,721 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-23 20:39:00,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:39:00,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-23 20:39:00,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2020-10-23 20:39:00,722 INFO L87 Difference]: Start difference. First operand 116 states and 122 transitions. Second operand 17 states. [2020-10-23 20:39:01,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:39:01,949 INFO L93 Difference]: Finished difference Result 150 states and 158 transitions. [2020-10-23 20:39:01,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-23 20:39:01,950 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 47 [2020-10-23 20:39:01,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:39:01,951 INFO L225 Difference]: With dead ends: 150 [2020-10-23 20:39:01,952 INFO L226 Difference]: Without dead ends: 146 [2020-10-23 20:39:01,953 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=196, Invalid=616, Unknown=0, NotChecked=0, Total=812 [2020-10-23 20:39:01,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-23 20:39:01,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 104. [2020-10-23 20:39:01,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-23 20:39:01,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 109 transitions. [2020-10-23 20:39:01,973 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 109 transitions. Word has length 47 [2020-10-23 20:39:01,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:39:01,973 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 109 transitions. [2020-10-23 20:39:01,973 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-23 20:39:01,974 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 109 transitions. [2020-10-23 20:39:01,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-23 20:39:01,974 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:39:01,975 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:39:01,975 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-23 20:39:01,975 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:39:01,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:39:01,975 INFO L82 PathProgramCache]: Analyzing trace with hash 1811215688, now seen corresponding path program 1 times [2020-10-23 20:39:01,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:39:01,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1978366334] [2020-10-23 20:39:01,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:39:01,980 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:39:02,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:39:02,002 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:39:02,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:39:02,025 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:39:02,073 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-23 20:39:02,074 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 20:39:02,074 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-23 20:39:02,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:39:02 BoogieIcfgContainer [2020-10-23 20:39:02,093 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 20:39:02,095 INFO L168 Benchmark]: Toolchain (without parser) took 29812.27 ms. Allocated memory was 151.0 MB in the beginning and 263.2 MB in the end (delta: 112.2 MB). Free memory was 126.3 MB in the beginning and 214.6 MB in the end (delta: -88.3 MB). Peak memory consumption was 25.6 MB. Max. memory is 8.0 GB. [2020-10-23 20:39:02,096 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 127.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 20:39:02,096 INFO L168 Benchmark]: CACSL2BoogieTranslator took 557.95 ms. Allocated memory is still 151.0 MB. Free memory was 125.7 MB in the beginning and 103.8 MB in the end (delta: 21.9 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-10-23 20:39:02,097 INFO L168 Benchmark]: Boogie Preprocessor took 77.16 ms. Allocated memory is still 151.0 MB. Free memory was 103.6 MB in the beginning and 100.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-10-23 20:39:02,097 INFO L168 Benchmark]: RCFGBuilder took 1089.73 ms. Allocated memory is still 151.0 MB. Free memory was 100.9 MB in the beginning and 92.7 MB in the end (delta: 8.2 MB). Peak memory consumption was 12.8 MB. Max. memory is 8.0 GB. [2020-10-23 20:39:02,098 INFO L168 Benchmark]: TraceAbstraction took 28069.02 ms. Allocated memory was 151.0 MB in the beginning and 263.2 MB in the end (delta: 112.2 MB). Free memory was 92.7 MB in the beginning and 214.6 MB in the end (delta: -121.9 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 20:39:02,101 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 127.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 557.95 ms. Allocated memory is still 151.0 MB. Free memory was 125.7 MB in the beginning and 103.8 MB in the end (delta: 21.9 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 77.16 ms. Allocated memory is still 151.0 MB. Free memory was 103.6 MB in the beginning and 100.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1089.73 ms. Allocated memory is still 151.0 MB. Free memory was 100.9 MB in the beginning and 92.7 MB in the end (delta: 8.2 MB). Peak memory consumption was 12.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 28069.02 ms. Allocated memory was 151.0 MB in the beginning and 263.2 MB in the end (delta: 112.2 MB). Free memory was 92.7 MB in the beginning and 214.6 MB in the end (delta: -121.9 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 992]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L1004] SLL* head = malloc(sizeof(SLL)); [L1005] head->next = ((void*)0) [L1006] head->prev = ((void*)0) [L1007] head->data = 0 [L1009] SLL* x = head; [L1012] COND FALSE !(__VERIFIER_nondet_int()) [L1021] x->data = 1 [L1022] x->next = malloc(sizeof(SLL)) [L1023] EXPR x->next [L1023] x->next->prev = x [L1024] EXPR x->next [L1024] x->next->data = 2 [L1026] x = head [L1028] COND FALSE !(!(((void*)0) != x)) [L1030] EXPR x->data [L1030] COND FALSE !(1 != x->data) [L1035] EXPR x->data [L1035] COND FALSE !(!(1 == x->data)) [L1036] EXPR x->next [L1036] x = x->next [L1037] EXPR x->data [L1037] COND TRUE !(2 != x->data) [L1037] CALL reach_error() [L992] COND FALSE !(0) [L992] __assert_fail ("0", "dll-token-2.c", 12, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 111 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 27.9s, OverallIterations: 7, TraceHistogramMax: 2, AutomataDifference: 4.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 461 SDtfs, 1330 SDslu, 1788 SDs, 0 SdLazy, 2069 SolverSat, 185 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 101 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=116occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 229 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...