/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/forester-heap/dll-01-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 19:06:23,782 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 19:06:23,785 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 19:06:23,823 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 19:06:23,823 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 19:06:23,834 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 19:06:23,836 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 19:06:23,838 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 19:06:23,839 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 19:06:23,840 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 19:06:23,841 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 19:06:23,842 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 19:06:23,843 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 19:06:23,843 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 19:06:23,844 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 19:06:23,845 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 19:06:23,846 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 19:06:23,847 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 19:06:23,849 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 19:06:23,850 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 19:06:23,852 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 19:06:23,853 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 19:06:23,854 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 19:06:23,855 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 19:06:23,857 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 19:06:23,857 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 19:06:23,857 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 19:06:23,858 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 19:06:23,859 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 19:06:23,860 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 19:06:23,860 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 19:06:23,861 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 19:06:23,862 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 19:06:23,862 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 19:06:23,863 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 19:06:23,864 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 19:06:23,864 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 19:06:23,864 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 19:06:23,865 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 19:06:23,865 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 19:06:23,866 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 19:06:23,867 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 19:06:23,876 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 19:06:23,876 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 19:06:23,878 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 19:06:23,878 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 19:06:23,878 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 19:06:23,878 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 19:06:23,878 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 19:06:23,879 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 19:06:23,879 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 19:06:23,879 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 19:06:23,879 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 19:06:23,879 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 19:06:23,880 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 19:06:23,880 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 19:06:23,880 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 19:06:23,880 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 19:06:23,880 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 19:06:23,881 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 19:06:23,881 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 19:06:23,881 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 19:06:23,881 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 19:06:23,882 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 19:06:23,882 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-08-22 19:06:24,180 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 19:06:24,200 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 19:06:24,205 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 19:06:24,206 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 19:06:24,207 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 19:06:24,207 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-01-1.i [2020-08-22 19:06:24,283 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d98cd864/cb5a7c83e1534cc4ba67b0abd8ca7fb8/FLAGa5bad54e0 [2020-08-22 19:06:24,825 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 19:06:24,825 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-01-1.i [2020-08-22 19:06:24,839 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d98cd864/cb5a7c83e1534cc4ba67b0abd8ca7fb8/FLAGa5bad54e0 [2020-08-22 19:06:25,196 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d98cd864/cb5a7c83e1534cc4ba67b0abd8ca7fb8 [2020-08-22 19:06:25,204 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 19:06:25,206 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 19:06:25,207 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 19:06:25,207 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 19:06:25,210 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 19:06:25,211 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 07:06:25" (1/1) ... [2020-08-22 19:06:25,215 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ca632cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:06:25, skipping insertion in model container [2020-08-22 19:06:25,215 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 07:06:25" (1/1) ... [2020-08-22 19:06:25,224 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 19:06:25,288 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 19:06:25,760 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 19:06:25,771 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 19:06:25,865 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 19:06:25,915 INFO L208 MainTranslator]: Completed translation [2020-08-22 19:06:25,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:06:25 WrapperNode [2020-08-22 19:06:25,916 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 19:06:25,917 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 19:06:25,917 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 19:06:25,917 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 19:06:25,932 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:06:25" (1/1) ... [2020-08-22 19:06:25,932 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:06:25" (1/1) ... [2020-08-22 19:06:25,949 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:06:25" (1/1) ... [2020-08-22 19:06:25,949 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:06:25" (1/1) ... [2020-08-22 19:06:25,971 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:06:25" (1/1) ... [2020-08-22 19:06:25,983 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:06:25" (1/1) ... [2020-08-22 19:06:25,987 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:06:25" (1/1) ... [2020-08-22 19:06:25,994 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 19:06:25,994 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 19:06:25,995 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 19:06:25,995 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 19:06:25,996 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:06:25" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 19:06:26,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 19:06:26,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 19:06:26,067 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 19:06:26,068 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-08-22 19:06:26,068 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-08-22 19:06:26,068 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-08-22 19:06:26,068 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-08-22 19:06:26,068 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-08-22 19:06:26,068 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-08-22 19:06:26,069 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-08-22 19:06:26,069 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-08-22 19:06:26,070 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-08-22 19:06:26,070 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-08-22 19:06:26,070 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-08-22 19:06:26,071 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-08-22 19:06:26,071 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-08-22 19:06:26,071 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-08-22 19:06:26,071 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-08-22 19:06:26,072 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-08-22 19:06:26,072 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-08-22 19:06:26,073 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-08-22 19:06:26,073 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-08-22 19:06:26,075 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-08-22 19:06:26,075 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-08-22 19:06:26,076 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-08-22 19:06:26,076 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-08-22 19:06:26,076 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-08-22 19:06:26,076 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-08-22 19:06:26,076 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-08-22 19:06:26,076 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-08-22 19:06:26,076 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-08-22 19:06:26,077 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-08-22 19:06:26,077 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-08-22 19:06:26,077 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-08-22 19:06:26,077 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-08-22 19:06:26,077 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-08-22 19:06:26,077 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-08-22 19:06:26,078 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-08-22 19:06:26,078 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-08-22 19:06:26,078 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-08-22 19:06:26,078 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-08-22 19:06:26,078 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-08-22 19:06:26,078 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-08-22 19:06:26,078 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-08-22 19:06:26,079 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-08-22 19:06:26,079 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-08-22 19:06:26,079 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-08-22 19:06:26,079 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-08-22 19:06:26,079 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-08-22 19:06:26,080 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-08-22 19:06:26,080 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-08-22 19:06:26,080 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-08-22 19:06:26,080 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-08-22 19:06:26,080 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 19:06:26,080 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-22 19:06:26,081 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-08-22 19:06:26,081 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 19:06:26,081 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-08-22 19:06:26,081 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-08-22 19:06:26,081 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-08-22 19:06:26,081 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-08-22 19:06:26,081 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-08-22 19:06:26,082 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 19:06:26,082 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-08-22 19:06:26,082 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-08-22 19:06:26,082 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-08-22 19:06:26,082 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-08-22 19:06:26,082 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-08-22 19:06:26,083 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-08-22 19:06:26,083 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-08-22 19:06:26,083 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-08-22 19:06:26,083 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-08-22 19:06:26,083 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-08-22 19:06:26,083 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-08-22 19:06:26,084 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-08-22 19:06:26,084 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-08-22 19:06:26,085 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-08-22 19:06:26,085 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-08-22 19:06:26,085 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-08-22 19:06:26,085 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-08-22 19:06:26,086 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-08-22 19:06:26,086 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-08-22 19:06:26,086 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-08-22 19:06:26,086 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-08-22 19:06:26,087 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-08-22 19:06:26,087 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-08-22 19:06:26,088 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-08-22 19:06:26,088 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-08-22 19:06:26,088 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-08-22 19:06:26,089 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-08-22 19:06:26,089 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-08-22 19:06:26,089 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-08-22 19:06:26,089 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-08-22 19:06:26,089 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-08-22 19:06:26,089 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-08-22 19:06:26,089 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-08-22 19:06:26,090 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-08-22 19:06:26,090 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-08-22 19:06:26,090 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-08-22 19:06:26,091 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-08-22 19:06:26,091 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-08-22 19:06:26,091 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-08-22 19:06:26,091 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-08-22 19:06:26,091 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-08-22 19:06:26,092 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-08-22 19:06:26,092 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-08-22 19:06:26,092 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 19:06:26,092 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 19:06:26,092 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 19:06:26,092 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 19:06:26,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 19:06:26,093 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 19:06:26,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 19:06:26,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 19:06:26,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 19:06:26,864 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 19:06:26,864 INFO L295 CfgBuilder]: Removed 30 assume(true) statements. [2020-08-22 19:06:26,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 07:06:26 BoogieIcfgContainer [2020-08-22 19:06:26,871 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 19:06:26,872 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 19:06:26,873 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 19:06:26,876 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 19:06:26,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 07:06:25" (1/3) ... [2020-08-22 19:06:26,877 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@226a28d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 07:06:26, skipping insertion in model container [2020-08-22 19:06:26,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:06:25" (2/3) ... [2020-08-22 19:06:26,878 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@226a28d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 07:06:26, skipping insertion in model container [2020-08-22 19:06:26,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 07:06:26" (3/3) ... [2020-08-22 19:06:26,881 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-01-1.i [2020-08-22 19:06:26,893 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 19:06:26,902 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2020-08-22 19:06:26,918 INFO L251 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2020-08-22 19:06:26,943 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 19:06:26,943 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 19:06:26,943 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-08-22 19:06:26,944 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 19:06:26,944 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 19:06:26,944 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 19:06:26,944 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 19:06:26,944 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 19:06:26,970 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states. [2020-08-22 19:06:26,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-08-22 19:06:26,980 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:06:26,981 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:06:26,982 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:06:26,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:06:26,989 INFO L82 PathProgramCache]: Analyzing trace with hash -1409190174, now seen corresponding path program 1 times [2020-08-22 19:06:26,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:06:26,997 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [998352722] [2020-08-22 19:06:26,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:06:27,072 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:06:27,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:06:27,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:06:27,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:06:27,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:06:27,261 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [998352722] [2020-08-22 19:06:27,263 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:06:27,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 19:06:27,264 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560597548] [2020-08-22 19:06:27,269 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 19:06:27,269 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:06:27,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 19:06:27,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 19:06:27,287 INFO L87 Difference]: Start difference. First operand 171 states. Second operand 5 states. [2020-08-22 19:06:27,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:06:27,739 INFO L93 Difference]: Finished difference Result 359 states and 475 transitions. [2020-08-22 19:06:27,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 19:06:27,741 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-08-22 19:06:27,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:06:27,755 INFO L225 Difference]: With dead ends: 359 [2020-08-22 19:06:27,755 INFO L226 Difference]: Without dead ends: 194 [2020-08-22 19:06:27,761 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 19:06:27,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-08-22 19:06:27,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 164. [2020-08-22 19:06:27,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-08-22 19:06:27,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 173 transitions. [2020-08-22 19:06:27,834 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 173 transitions. Word has length 13 [2020-08-22 19:06:27,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:06:27,834 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 173 transitions. [2020-08-22 19:06:27,834 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 19:06:27,835 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 173 transitions. [2020-08-22 19:06:27,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-22 19:06:27,836 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:06:27,836 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] [2020-08-22 19:06:27,836 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 19:06:27,837 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:06:27,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:06:27,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1469410252, now seen corresponding path program 1 times [2020-08-22 19:06:27,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:06:27,838 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1265305159] [2020-08-22 19:06:27,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:06:27,842 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:06:27,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:06:27,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:06:27,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:06:27,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:06:27,918 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1265305159] [2020-08-22 19:06:27,918 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:06:27,918 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 19:06:27,918 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866282906] [2020-08-22 19:06:27,919 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 19:06:27,919 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:06:27,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 19:06:27,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 19:06:27,920 INFO L87 Difference]: Start difference. First operand 164 states and 173 transitions. Second operand 4 states. [2020-08-22 19:06:28,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:06:28,208 INFO L93 Difference]: Finished difference Result 170 states and 179 transitions. [2020-08-22 19:06:28,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 19:06:28,209 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-08-22 19:06:28,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:06:28,211 INFO L225 Difference]: With dead ends: 170 [2020-08-22 19:06:28,211 INFO L226 Difference]: Without dead ends: 165 [2020-08-22 19:06:28,213 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 19:06:28,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-08-22 19:06:28,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2020-08-22 19:06:28,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-08-22 19:06:28,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 174 transitions. [2020-08-22 19:06:28,242 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 174 transitions. Word has length 25 [2020-08-22 19:06:28,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:06:28,243 INFO L479 AbstractCegarLoop]: Abstraction has 165 states and 174 transitions. [2020-08-22 19:06:28,243 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 19:06:28,243 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 174 transitions. [2020-08-22 19:06:28,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-22 19:06:28,244 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:06:28,245 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:06:28,245 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 19:06:28,245 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:06:28,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:06:28,246 INFO L82 PathProgramCache]: Analyzing trace with hash -155961871, now seen corresponding path program 1 times [2020-08-22 19:06:28,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:06:28,247 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1500876762] [2020-08-22 19:06:28,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:06:28,251 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:06:28,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:06:28,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:06:28,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:06:28,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:06:28,370 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1500876762] [2020-08-22 19:06:28,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:06:28,370 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 19:06:28,371 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931468835] [2020-08-22 19:06:28,371 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 19:06:28,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:06:28,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 19:06:28,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-08-22 19:06:28,373 INFO L87 Difference]: Start difference. First operand 165 states and 174 transitions. Second operand 8 states. [2020-08-22 19:06:28,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:06:28,960 INFO L93 Difference]: Finished difference Result 256 states and 271 transitions. [2020-08-22 19:06:28,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 19:06:28,960 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2020-08-22 19:06:28,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:06:28,963 INFO L225 Difference]: With dead ends: 256 [2020-08-22 19:06:28,963 INFO L226 Difference]: Without dead ends: 251 [2020-08-22 19:06:28,964 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-08-22 19:06:28,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2020-08-22 19:06:28,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 159. [2020-08-22 19:06:28,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-08-22 19:06:28,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 168 transitions. [2020-08-22 19:06:28,998 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 168 transitions. Word has length 27 [2020-08-22 19:06:28,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:06:28,998 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 168 transitions. [2020-08-22 19:06:28,999 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 19:06:28,999 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 168 transitions. [2020-08-22 19:06:29,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-08-22 19:06:29,000 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:06:29,000 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] [2020-08-22 19:06:29,000 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 19:06:29,001 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:06:29,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:06:29,001 INFO L82 PathProgramCache]: Analyzing trace with hash 1500955686, now seen corresponding path program 1 times [2020-08-22 19:06:29,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:06:29,002 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1947683501] [2020-08-22 19:06:29,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:06:29,006 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:06:29,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:06:29,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:06:29,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:06:29,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:06:29,089 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1947683501] [2020-08-22 19:06:29,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:06:29,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 19:06:29,089 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628941035] [2020-08-22 19:06:29,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 19:06:29,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:06:29,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 19:06:29,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-22 19:06:29,091 INFO L87 Difference]: Start difference. First operand 159 states and 168 transitions. Second operand 6 states. [2020-08-22 19:06:29,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:06:29,506 INFO L93 Difference]: Finished difference Result 377 states and 399 transitions. [2020-08-22 19:06:29,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 19:06:29,507 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-08-22 19:06:29,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:06:29,509 INFO L225 Difference]: With dead ends: 377 [2020-08-22 19:06:29,509 INFO L226 Difference]: Without dead ends: 249 [2020-08-22 19:06:29,511 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-22 19:06:29,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2020-08-22 19:06:29,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 162. [2020-08-22 19:06:29,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-08-22 19:06:29,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 171 transitions. [2020-08-22 19:06:29,536 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 171 transitions. Word has length 33 [2020-08-22 19:06:29,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:06:29,536 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 171 transitions. [2020-08-22 19:06:29,536 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 19:06:29,536 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 171 transitions. [2020-08-22 19:06:29,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-08-22 19:06:29,538 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:06:29,538 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:06:29,538 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 19:06:29,538 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:06:29,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:06:29,539 INFO L82 PathProgramCache]: Analyzing trace with hash -820684573, now seen corresponding path program 1 times [2020-08-22 19:06:29,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:06:29,539 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1128761009] [2020-08-22 19:06:29,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:06:29,543 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:06:29,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:06:29,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:06:29,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:06:29,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:06:29,624 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1128761009] [2020-08-22 19:06:29,624 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:06:29,624 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 19:06:29,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684373016] [2020-08-22 19:06:29,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 19:06:29,625 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:06:29,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 19:06:29,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-22 19:06:29,626 INFO L87 Difference]: Start difference. First operand 162 states and 171 transitions. Second operand 7 states. [2020-08-22 19:06:29,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:06:29,993 INFO L93 Difference]: Finished difference Result 270 states and 285 transitions. [2020-08-22 19:06:29,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 19:06:29,993 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-08-22 19:06:29,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:06:29,995 INFO L225 Difference]: With dead ends: 270 [2020-08-22 19:06:29,995 INFO L226 Difference]: Without dead ends: 238 [2020-08-22 19:06:29,996 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-08-22 19:06:29,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-08-22 19:06:30,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 161. [2020-08-22 19:06:30,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-08-22 19:06:30,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 170 transitions. [2020-08-22 19:06:30,018 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 170 transitions. Word has length 35 [2020-08-22 19:06:30,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:06:30,019 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 170 transitions. [2020-08-22 19:06:30,019 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 19:06:30,019 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 170 transitions. [2020-08-22 19:06:30,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-08-22 19:06:30,021 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:06:30,021 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:06:30,021 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 19:06:30,021 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:06:30,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:06:30,022 INFO L82 PathProgramCache]: Analyzing trace with hash -2091807586, now seen corresponding path program 1 times [2020-08-22 19:06:30,022 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:06:30,022 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1085686285] [2020-08-22 19:06:30,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:06:30,025 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:06:30,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:06:30,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:06:30,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:06:30,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:06:30,206 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1085686285] [2020-08-22 19:06:30,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:06:30,208 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-22 19:06:30,209 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463134184] [2020-08-22 19:06:30,209 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 19:06:30,210 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:06:30,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 19:06:30,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-22 19:06:30,211 INFO L87 Difference]: Start difference. First operand 161 states and 170 transitions. Second operand 12 states. [2020-08-22 19:06:30,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:06:30,900 INFO L93 Difference]: Finished difference Result 286 states and 302 transitions. [2020-08-22 19:06:30,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 19:06:30,901 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 42 [2020-08-22 19:06:30,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:06:30,903 INFO L225 Difference]: With dead ends: 286 [2020-08-22 19:06:30,903 INFO L226 Difference]: Without dead ends: 282 [2020-08-22 19:06:30,904 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2020-08-22 19:06:30,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-08-22 19:06:30,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 176. [2020-08-22 19:06:30,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-08-22 19:06:30,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 186 transitions. [2020-08-22 19:06:30,934 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 186 transitions. Word has length 42 [2020-08-22 19:06:30,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:06:30,935 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 186 transitions. [2020-08-22 19:06:30,935 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 19:06:30,936 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 186 transitions. [2020-08-22 19:06:30,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-08-22 19:06:30,937 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:06:30,938 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] [2020-08-22 19:06:30,938 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 19:06:30,938 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:06:30,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:06:30,938 INFO L82 PathProgramCache]: Analyzing trace with hash 654436304, now seen corresponding path program 1 times [2020-08-22 19:06:30,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:06:30,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [633071092] [2020-08-22 19:06:30,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:06:30,943 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:06:30,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:06:30,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:06:30,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:06:30,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:06:30,986 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [633071092] [2020-08-22 19:06:30,987 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:06:30,987 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 19:06:30,987 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232521859] [2020-08-22 19:06:30,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 19:06:30,988 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:06:30,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 19:06:30,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 19:06:30,988 INFO L87 Difference]: Start difference. First operand 176 states and 186 transitions. Second operand 4 states. [2020-08-22 19:06:31,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:06:31,273 INFO L93 Difference]: Finished difference Result 282 states and 301 transitions. [2020-08-22 19:06:31,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 19:06:31,274 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2020-08-22 19:06:31,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:06:31,276 INFO L225 Difference]: With dead ends: 282 [2020-08-22 19:06:31,276 INFO L226 Difference]: Without dead ends: 215 [2020-08-22 19:06:31,277 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 19:06:31,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2020-08-22 19:06:31,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 179. [2020-08-22 19:06:31,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-08-22 19:06:31,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 190 transitions. [2020-08-22 19:06:31,307 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 190 transitions. Word has length 43 [2020-08-22 19:06:31,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:06:31,308 INFO L479 AbstractCegarLoop]: Abstraction has 179 states and 190 transitions. [2020-08-22 19:06:31,308 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 19:06:31,308 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 190 transitions. [2020-08-22 19:06:31,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-08-22 19:06:31,309 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:06:31,309 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] [2020-08-22 19:06:31,309 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 19:06:31,310 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:06:31,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:06:31,310 INFO L82 PathProgramCache]: Analyzing trace with hash 1847672787, now seen corresponding path program 1 times [2020-08-22 19:06:31,310 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:06:31,311 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [234747516] [2020-08-22 19:06:31,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:06:31,314 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:06:31,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:06:31,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:06:31,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:06:31,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:06:31,376 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [234747516] [2020-08-22 19:06:31,376 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:06:31,376 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 19:06:31,377 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102651003] [2020-08-22 19:06:31,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 19:06:31,378 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:06:31,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 19:06:31,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 19:06:31,378 INFO L87 Difference]: Start difference. First operand 179 states and 190 transitions. Second operand 4 states. [2020-08-22 19:06:31,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:06:31,620 INFO L93 Difference]: Finished difference Result 179 states and 190 transitions. [2020-08-22 19:06:31,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 19:06:31,621 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2020-08-22 19:06:31,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:06:31,625 INFO L225 Difference]: With dead ends: 179 [2020-08-22 19:06:31,625 INFO L226 Difference]: Without dead ends: 177 [2020-08-22 19:06:31,626 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 19:06:31,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-08-22 19:06:31,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2020-08-22 19:06:31,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-08-22 19:06:31,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 188 transitions. [2020-08-22 19:06:31,653 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 188 transitions. Word has length 45 [2020-08-22 19:06:31,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:06:31,653 INFO L479 AbstractCegarLoop]: Abstraction has 177 states and 188 transitions. [2020-08-22 19:06:31,654 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 19:06:31,654 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 188 transitions. [2020-08-22 19:06:31,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-08-22 19:06:31,659 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:06:31,660 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, 1] [2020-08-22 19:06:31,660 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 19:06:31,661 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:06:31,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:06:31,661 INFO L82 PathProgramCache]: Analyzing trace with hash 11890970, now seen corresponding path program 1 times [2020-08-22 19:06:31,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:06:31,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [295819977] [2020-08-22 19:06:31,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:06:31,666 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:06:31,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:06:31,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:06:31,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:06:31,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:06:31,847 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [295819977] [2020-08-22 19:06:31,848 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:06:31,848 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 19:06:31,854 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136733372] [2020-08-22 19:06:31,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 19:06:31,855 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:06:31,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 19:06:31,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-08-22 19:06:31,856 INFO L87 Difference]: Start difference. First operand 177 states and 188 transitions. Second operand 9 states. [2020-08-22 19:06:32,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:06:32,494 INFO L93 Difference]: Finished difference Result 368 states and 393 transitions. [2020-08-22 19:06:32,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 19:06:32,495 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 49 [2020-08-22 19:06:32,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:06:32,498 INFO L225 Difference]: With dead ends: 368 [2020-08-22 19:06:32,498 INFO L226 Difference]: Without dead ends: 300 [2020-08-22 19:06:32,499 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2020-08-22 19:06:32,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2020-08-22 19:06:32,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 196. [2020-08-22 19:06:32,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-08-22 19:06:32,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 208 transitions. [2020-08-22 19:06:32,542 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 208 transitions. Word has length 49 [2020-08-22 19:06:32,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:06:32,542 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 208 transitions. [2020-08-22 19:06:32,542 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 19:06:32,542 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 208 transitions. [2020-08-22 19:06:32,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-08-22 19:06:32,545 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:06:32,545 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, 1, 1, 1, 1, 1, 1] [2020-08-22 19:06:32,545 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 19:06:32,545 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:06:32,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:06:32,546 INFO L82 PathProgramCache]: Analyzing trace with hash 1643041774, now seen corresponding path program 1 times [2020-08-22 19:06:32,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:06:32,546 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [556103100] [2020-08-22 19:06:32,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:06:32,550 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:06:32,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:06:32,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:06:32,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:06:33,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:06:33,015 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [556103100] [2020-08-22 19:06:33,015 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:06:33,015 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-22 19:06:33,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014928701] [2020-08-22 19:06:33,016 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-22 19:06:33,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:06:33,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-22 19:06:33,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-08-22 19:06:33,018 INFO L87 Difference]: Start difference. First operand 196 states and 208 transitions. Second operand 14 states. [2020-08-22 19:06:35,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:06:35,120 INFO L93 Difference]: Finished difference Result 589 states and 622 transitions. [2020-08-22 19:06:35,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-22 19:06:35,126 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 54 [2020-08-22 19:06:35,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:06:35,129 INFO L225 Difference]: With dead ends: 589 [2020-08-22 19:06:35,129 INFO L226 Difference]: Without dead ends: 586 [2020-08-22 19:06:35,130 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=252, Invalid=804, Unknown=0, NotChecked=0, Total=1056 [2020-08-22 19:06:35,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2020-08-22 19:06:35,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 213. [2020-08-22 19:06:35,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-08-22 19:06:35,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 226 transitions. [2020-08-22 19:06:35,174 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 226 transitions. Word has length 54 [2020-08-22 19:06:35,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:06:35,176 INFO L479 AbstractCegarLoop]: Abstraction has 213 states and 226 transitions. [2020-08-22 19:06:35,176 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-22 19:06:35,176 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 226 transitions. [2020-08-22 19:06:35,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-08-22 19:06:35,178 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:06:35,178 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, 1, 1, 1, 1, 1, 1] [2020-08-22 19:06:35,178 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 19:06:35,178 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:06:35,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:06:35,179 INFO L82 PathProgramCache]: Analyzing trace with hash 358720869, now seen corresponding path program 1 times [2020-08-22 19:06:35,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:06:35,179 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [746396423] [2020-08-22 19:06:35,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:06:35,214 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:06:35,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:06:35,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:06:35,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:06:35,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:06:35,361 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [746396423] [2020-08-22 19:06:35,361 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:06:35,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 19:06:35,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755662903] [2020-08-22 19:06:35,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 19:06:35,363 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:06:35,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 19:06:35,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 19:06:35,364 INFO L87 Difference]: Start difference. First operand 213 states and 226 transitions. Second operand 8 states. [2020-08-22 19:06:35,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:06:35,837 INFO L93 Difference]: Finished difference Result 297 states and 316 transitions. [2020-08-22 19:06:35,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 19:06:35,837 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 54 [2020-08-22 19:06:35,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:06:35,839 INFO L225 Difference]: With dead ends: 297 [2020-08-22 19:06:35,839 INFO L226 Difference]: Without dead ends: 267 [2020-08-22 19:06:35,839 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-08-22 19:06:35,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2020-08-22 19:06:35,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 248. [2020-08-22 19:06:35,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2020-08-22 19:06:35,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 268 transitions. [2020-08-22 19:06:35,882 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 268 transitions. Word has length 54 [2020-08-22 19:06:35,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:06:35,882 INFO L479 AbstractCegarLoop]: Abstraction has 248 states and 268 transitions. [2020-08-22 19:06:35,882 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 19:06:35,882 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 268 transitions. [2020-08-22 19:06:35,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-08-22 19:06:35,883 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:06:35,883 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:06:35,883 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 19:06:35,884 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:06:35,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:06:35,884 INFO L82 PathProgramCache]: Analyzing trace with hash 1270543956, now seen corresponding path program 1 times [2020-08-22 19:06:35,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:06:35,884 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1590271482] [2020-08-22 19:06:35,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:06:35,887 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:06:35,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:06:35,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:06:35,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:06:35,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:06:35,922 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1590271482] [2020-08-22 19:06:35,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:06:35,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 19:06:35,922 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512045090] [2020-08-22 19:06:35,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 19:06:35,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:06:35,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 19:06:35,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 19:06:35,923 INFO L87 Difference]: Start difference. First operand 248 states and 268 transitions. Second operand 4 states. [2020-08-22 19:06:36,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:06:36,179 INFO L93 Difference]: Finished difference Result 254 states and 274 transitions. [2020-08-22 19:06:36,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 19:06:36,180 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2020-08-22 19:06:36,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:06:36,181 INFO L225 Difference]: With dead ends: 254 [2020-08-22 19:06:36,181 INFO L226 Difference]: Without dead ends: 249 [2020-08-22 19:06:36,182 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 19:06:36,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2020-08-22 19:06:36,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2020-08-22 19:06:36,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2020-08-22 19:06:36,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 269 transitions. [2020-08-22 19:06:36,224 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 269 transitions. Word has length 56 [2020-08-22 19:06:36,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:06:36,224 INFO L479 AbstractCegarLoop]: Abstraction has 249 states and 269 transitions. [2020-08-22 19:06:36,224 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 19:06:36,224 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 269 transitions. [2020-08-22 19:06:36,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-22 19:06:36,225 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:06:36,225 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:06:36,226 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-22 19:06:36,226 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:06:36,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:06:36,226 INFO L82 PathProgramCache]: Analyzing trace with hash 2002844954, now seen corresponding path program 1 times [2020-08-22 19:06:36,226 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:06:36,227 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1251763497] [2020-08-22 19:06:36,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:06:36,230 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:06:36,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 19:06:36,249 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 19:06:36,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 19:06:36,272 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 19:06:36,320 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 19:06:36,320 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 19:06:36,321 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-22 19:06:36,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 07:06:36 BoogieIcfgContainer [2020-08-22 19:06:36,359 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 19:06:36,364 INFO L168 Benchmark]: Toolchain (without parser) took 11154.91 ms. Allocated memory was 137.4 MB in the beginning and 367.5 MB in the end (delta: 230.2 MB). Free memory was 99.9 MB in the beginning and 149.3 MB in the end (delta: -49.4 MB). Peak memory consumption was 180.7 MB. Max. memory is 7.1 GB. [2020-08-22 19:06:36,365 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 137.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-22 19:06:36,368 INFO L168 Benchmark]: CACSL2BoogieTranslator took 709.49 ms. Allocated memory was 137.4 MB in the beginning and 201.3 MB in the end (delta: 64.0 MB). Free memory was 99.7 MB in the beginning and 167.0 MB in the end (delta: -67.3 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. [2020-08-22 19:06:36,369 INFO L168 Benchmark]: Boogie Preprocessor took 77.49 ms. Allocated memory is still 201.3 MB. Free memory was 167.0 MB in the beginning and 164.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-08-22 19:06:36,370 INFO L168 Benchmark]: RCFGBuilder took 876.46 ms. Allocated memory is still 201.3 MB. Free memory was 163.5 MB in the beginning and 100.8 MB in the end (delta: 62.7 MB). Peak memory consumption was 62.7 MB. Max. memory is 7.1 GB. [2020-08-22 19:06:36,371 INFO L168 Benchmark]: TraceAbstraction took 9486.53 ms. Allocated memory was 201.3 MB in the beginning and 367.5 MB in the end (delta: 166.2 MB). Free memory was 100.1 MB in the beginning and 149.3 MB in the end (delta: -49.2 MB). Peak memory consumption was 117.0 MB. Max. memory is 7.1 GB. [2020-08-22 19:06:36,375 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 137.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 709.49 ms. Allocated memory was 137.4 MB in the beginning and 201.3 MB in the end (delta: 64.0 MB). Free memory was 99.7 MB in the beginning and 167.0 MB in the end (delta: -67.3 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 77.49 ms. Allocated memory is still 201.3 MB. Free memory was 167.0 MB in the beginning and 164.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 876.46 ms. Allocated memory is still 201.3 MB. Free memory was 163.5 MB in the beginning and 100.8 MB in the end (delta: 62.7 MB). Peak memory consumption was 62.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 9486.53 ms. Allocated memory was 201.3 MB in the beginning and 367.5 MB in the end (delta: 166.2 MB). Free memory was 100.1 MB in the beginning and 149.3 MB in the end (delta: -49.2 MB). Peak memory consumption was 117.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1029]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L992] SLL* list = malloc(sizeof(SLL)); [L993] list->next = ((void*)0) [L994] list->prev = ((void*)0) [L995] COND FALSE !(!(list != ((void*)0))) [L995] COND FALSE !(__VERIFIER_nondet_int()) [L995] list->inner = malloc(sizeof(SLL)) [L995] EXPR list->inner [L995] list->inner->next = ((void*)0) [L995] EXPR list->inner [L995] list->inner->inner = ((void*)0) [L995] EXPR list->inner [L995] EXPR list->inner != ((void*)0) || list->inner == ((void*)0) [L995] COND FALSE !(!(list->inner != ((void*)0) || list->inner == ((void*)0))) [L997] SLL* end = list; [L1000] COND FALSE !(__VERIFIER_nondet_int()) [L1011] end = ((void*)0) [L1012] end = list [L1015] COND FALSE !(!(((void*)0) != end)) [L1017] COND TRUE ((void*)0) != end [L1019] int len = 0; [L1020] EXPR end->inner [L1020] SLL* inner = end->inner; [L1021] COND TRUE ((void*)0) != inner [L1023] COND TRUE len == 0 [L1024] len = 1 [L1027] COND FALSE !(!(((void*)0) != inner)) [L1028] EXPR inner->inner [L1028] COND FALSE !(!(((void*)0) == inner->inner)) [L1029] EXPR inner->next [L1029] COND TRUE !(((void*)0) != inner->next) [L1029] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 171 locations, 13 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 9.3s, OverallIterations: 13, TraceHistogramMax: 1, AutomataDifference: 6.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1962 SDtfs, 3404 SDslu, 5824 SDs, 0 SdLazy, 4076 SolverSat, 112 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 151 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=249occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 12 MinimizatonAttempts, 924 StatesRemovedByMinimization, 9 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...