/usr/bin/java -ea -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/forester-heap/dll-circular-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-18 05:14:29,853 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-18 05:14:29,856 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-18 05:14:29,875 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-18 05:14:29,876 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-18 05:14:29,878 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-18 05:14:29,880 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-18 05:14:29,890 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-18 05:14:29,894 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-18 05:14:29,898 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-18 05:14:29,901 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-18 05:14:29,903 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-18 05:14:29,904 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-18 05:14:29,906 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-18 05:14:29,909 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-18 05:14:29,910 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-18 05:14:29,912 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-18 05:14:29,914 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-18 05:14:29,916 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-18 05:14:29,921 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-18 05:14:29,927 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-18 05:14:29,932 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-18 05:14:29,933 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-18 05:14:29,934 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-18 05:14:29,937 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-18 05:14:29,937 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-18 05:14:29,937 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-18 05:14:29,940 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-18 05:14:29,941 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-18 05:14:29,942 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-18 05:14:29,942 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-18 05:14:29,943 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-18 05:14:29,944 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-18 05:14:29,945 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-18 05:14:29,947 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-18 05:14:29,947 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-18 05:14:29,948 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-18 05:14:29,948 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-18 05:14:29,948 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-18 05:14:29,949 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-18 05:14:29,950 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-18 05:14:29,951 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-18 05:14:29,978 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-18 05:14:29,978 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-18 05:14:29,985 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-18 05:14:29,985 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-18 05:14:29,985 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-18 05:14:29,986 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-18 05:14:29,986 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-18 05:14:29,986 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-18 05:14:29,986 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-18 05:14:29,986 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-18 05:14:29,986 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-18 05:14:29,987 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-18 05:14:29,987 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-18 05:14:29,987 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-18 05:14:29,987 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-18 05:14:29,988 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-18 05:14:29,988 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-18 05:14:29,988 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-18 05:14:29,988 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-18 05:14:29,988 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-18 05:14:29,989 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-18 05:14:29,989 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-18 05:14:29,989 INFO L138 SettingsManager]: * Use separate solver for trace checks=false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-07-18 05:14:30,277 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-18 05:14:30,292 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-18 05:14:30,297 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-18 05:14:30,299 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-18 05:14:30,299 INFO L275 PluginConnector]: CDTParser initialized [2020-07-18 05:14:30,300 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-circular-1.i [2020-07-18 05:14:30,373 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c551a9fb0/b244334dd7b14ec3b9f3a2948028845c/FLAG0953735e1 [2020-07-18 05:14:30,936 INFO L306 CDTParser]: Found 1 translation units. [2020-07-18 05:14:30,937 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-circular-1.i [2020-07-18 05:14:30,952 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c551a9fb0/b244334dd7b14ec3b9f3a2948028845c/FLAG0953735e1 [2020-07-18 05:14:31,176 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c551a9fb0/b244334dd7b14ec3b9f3a2948028845c [2020-07-18 05:14:31,186 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-18 05:14:31,190 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-18 05:14:31,191 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-18 05:14:31,191 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-18 05:14:31,195 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-18 05:14:31,197 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.07 05:14:31" (1/1) ... [2020-07-18 05:14:31,201 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48d3e829 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 05:14:31, skipping insertion in model container [2020-07-18 05:14:31,201 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.07 05:14:31" (1/1) ... [2020-07-18 05:14:31,212 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-18 05:14:31,258 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-18 05:14:31,745 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-18 05:14:31,763 INFO L203 MainTranslator]: Completed pre-run [2020-07-18 05:14:31,855 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-18 05:14:31,923 INFO L208 MainTranslator]: Completed translation [2020-07-18 05:14:31,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 05:14:31 WrapperNode [2020-07-18 05:14:31,923 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-18 05:14:31,924 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-18 05:14:31,924 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-18 05:14:31,925 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-18 05:14:31,937 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 05:14:31" (1/1) ... [2020-07-18 05:14:31,937 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 05:14:31" (1/1) ... [2020-07-18 05:14:31,953 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 05:14:31" (1/1) ... [2020-07-18 05:14:31,953 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 05:14:31" (1/1) ... [2020-07-18 05:14:31,978 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 05:14:31" (1/1) ... [2020-07-18 05:14:31,986 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 05:14:31" (1/1) ... [2020-07-18 05:14:31,990 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 05:14:31" (1/1) ... [2020-07-18 05:14:31,996 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-18 05:14:31,997 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-18 05:14:31,997 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-18 05:14:31,997 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-18 05:14:31,999 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 05:14:31" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-18 05:14:32,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-18 05:14:32,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-18 05:14:32,074 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-18 05:14:32,074 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-18 05:14:32,074 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-18 05:14:32,074 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-18 05:14:32,074 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-18 05:14:32,075 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-18 05:14:32,075 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-18 05:14:32,075 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-18 05:14:32,075 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-18 05:14:32,076 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-18 05:14:32,076 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-18 05:14:32,076 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-18 05:14:32,077 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-18 05:14:32,078 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-18 05:14:32,078 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-18 05:14:32,078 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-18 05:14:32,078 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-18 05:14:32,079 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-18 05:14:32,079 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-18 05:14:32,080 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-18 05:14:32,082 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-18 05:14:32,082 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-18 05:14:32,082 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-18 05:14:32,082 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-18 05:14:32,083 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-18 05:14:32,083 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-18 05:14:32,083 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-18 05:14:32,083 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-18 05:14:32,083 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-18 05:14:32,084 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-18 05:14:32,084 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-18 05:14:32,084 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-18 05:14:32,084 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-18 05:14:32,085 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-18 05:14:32,085 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-18 05:14:32,085 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-18 05:14:32,085 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-18 05:14:32,085 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-18 05:14:32,085 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-18 05:14:32,085 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-18 05:14:32,085 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-18 05:14:32,086 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-18 05:14:32,086 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-18 05:14:32,086 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-18 05:14:32,086 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-18 05:14:32,087 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-18 05:14:32,087 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-18 05:14:32,087 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-18 05:14:32,087 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-18 05:14:32,087 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-18 05:14:32,087 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-18 05:14:32,087 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-18 05:14:32,088 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-18 05:14:32,088 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-18 05:14:32,088 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-18 05:14:32,088 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-18 05:14:32,088 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-18 05:14:32,088 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-18 05:14:32,089 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-18 05:14:32,089 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-07-18 05:14:32,089 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-18 05:14:32,089 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-18 05:14:32,089 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-07-18 05:14:32,089 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-18 05:14:32,090 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-18 05:14:32,090 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-07-18 05:14:32,090 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-18 05:14:32,090 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-18 05:14:32,091 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-18 05:14:32,091 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-18 05:14:32,091 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-18 05:14:32,092 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-18 05:14:32,093 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-18 05:14:32,093 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-18 05:14:32,093 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-18 05:14:32,093 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-18 05:14:32,093 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-18 05:14:32,093 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-18 05:14:32,094 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-18 05:14:32,094 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-18 05:14:32,094 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-18 05:14:32,095 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-18 05:14:32,095 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-18 05:14:32,095 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-18 05:14:32,096 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-18 05:14:32,097 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-18 05:14:32,097 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-18 05:14:32,097 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-18 05:14:32,097 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-18 05:14:32,097 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-18 05:14:32,098 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-18 05:14:32,098 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-18 05:14:32,098 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-18 05:14:32,099 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-18 05:14:32,099 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-18 05:14:32,099 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-18 05:14:32,099 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-18 05:14:32,099 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-18 05:14:32,100 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-18 05:14:32,100 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-18 05:14:32,100 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-18 05:14:32,100 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-18 05:14:32,100 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-18 05:14:32,100 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-18 05:14:32,100 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-18 05:14:32,101 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-18 05:14:32,101 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-18 05:14:32,101 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-18 05:14:32,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-18 05:14:32,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-18 05:14:32,101 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-18 05:14:32,101 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-18 05:14:32,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-18 05:14:32,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-18 05:14:32,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-18 05:14:32,854 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-18 05:14:32,854 INFO L295 CfgBuilder]: Removed 9 assume(true) statements. [2020-07-18 05:14:32,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.07 05:14:32 BoogieIcfgContainer [2020-07-18 05:14:32,859 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-18 05:14:32,861 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-18 05:14:32,861 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-18 05:14:32,864 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-18 05:14:32,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.07 05:14:31" (1/3) ... [2020-07-18 05:14:32,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d22fe9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.07 05:14:32, skipping insertion in model container [2020-07-18 05:14:32,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 05:14:31" (2/3) ... [2020-07-18 05:14:32,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d22fe9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.07 05:14:32, skipping insertion in model container [2020-07-18 05:14:32,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.07 05:14:32" (3/3) ... [2020-07-18 05:14:32,869 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-circular-1.i [2020-07-18 05:14:32,880 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-18 05:14:32,889 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-07-18 05:14:32,905 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-07-18 05:14:32,927 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-18 05:14:32,927 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-18 05:14:32,927 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-07-18 05:14:32,928 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-18 05:14:32,928 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-18 05:14:32,928 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-18 05:14:32,928 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-18 05:14:32,928 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-18 05:14:32,944 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states. [2020-07-18 05:14:32,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-18 05:14:32,954 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 05:14:32,955 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-18 05:14:32,956 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 05:14:32,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 05:14:32,963 INFO L82 PathProgramCache]: Analyzing trace with hash -740897811, now seen corresponding path program 1 times [2020-07-18 05:14:32,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 05:14:32,973 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1111227381] [2020-07-18 05:14:32,974 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 05:14:33,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 05:14:33,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 05:14:33,228 INFO L280 TraceCheckUtils]: 0: Hoare triple {106#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0; {99#true} is VALID [2020-07-18 05:14:33,228 INFO L280 TraceCheckUtils]: 1: Hoare triple {99#true} #valid := #valid[0 := 0]; {99#true} is VALID [2020-07-18 05:14:33,229 INFO L280 TraceCheckUtils]: 2: Hoare triple {99#true} assume 0 < #StackHeapBarrier; {99#true} is VALID [2020-07-18 05:14:33,229 INFO L280 TraceCheckUtils]: 3: Hoare triple {99#true} assume true; {99#true} is VALID [2020-07-18 05:14:33,229 INFO L275 TraceCheckUtils]: 4: Hoare quadruple {99#true} {99#true} #187#return; {99#true} is VALID [2020-07-18 05:14:33,233 INFO L263 TraceCheckUtils]: 0: Hoare triple {99#true} call ULTIMATE.init(); {106#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} is VALID [2020-07-18 05:14:33,234 INFO L280 TraceCheckUtils]: 1: Hoare triple {106#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0; {99#true} is VALID [2020-07-18 05:14:33,234 INFO L280 TraceCheckUtils]: 2: Hoare triple {99#true} #valid := #valid[0 := 0]; {99#true} is VALID [2020-07-18 05:14:33,234 INFO L280 TraceCheckUtils]: 3: Hoare triple {99#true} assume 0 < #StackHeapBarrier; {99#true} is VALID [2020-07-18 05:14:33,235 INFO L280 TraceCheckUtils]: 4: Hoare triple {99#true} assume true; {99#true} is VALID [2020-07-18 05:14:33,235 INFO L275 TraceCheckUtils]: 5: Hoare quadruple {99#true} {99#true} #187#return; {99#true} is VALID [2020-07-18 05:14:33,235 INFO L263 TraceCheckUtils]: 6: Hoare triple {99#true} call #t~ret18 := main(); {99#true} is VALID [2020-07-18 05:14:33,236 INFO L280 TraceCheckUtils]: 7: Hoare triple {99#true} SUMMARY for call #t~malloc0.base, #t~malloc0.offset := #Ultimate.allocOnHeap(12); srcloc: mainENTRY {99#true} is VALID [2020-07-18 05:14:33,236 INFO L280 TraceCheckUtils]: 8: Hoare triple {99#true} ~head~0.base, ~head~0.offset := #t~malloc0.base, #t~malloc0.offset; {99#true} is VALID [2020-07-18 05:14:33,236 INFO L280 TraceCheckUtils]: 9: Hoare triple {99#true} SUMMARY for call write~$Pointer$(~head~0.base, ~head~0.offset, ~head~0.base, ~head~0.offset, 4); srcloc: L987 {99#true} is VALID [2020-07-18 05:14:33,237 INFO L280 TraceCheckUtils]: 10: Hoare triple {99#true} SUMMARY for call write~int(0, ~head~0.base, 8 + ~head~0.offset, 4); srcloc: L987-1 {99#true} is VALID [2020-07-18 05:14:33,237 INFO L280 TraceCheckUtils]: 11: Hoare triple {99#true} ~x~0.base, ~x~0.offset := ~head~0.base, ~head~0.offset; {99#true} is VALID [2020-07-18 05:14:33,237 INFO L280 TraceCheckUtils]: 12: Hoare triple {99#true} ~state~0 := 1; {99#true} is VALID [2020-07-18 05:14:33,239 INFO L280 TraceCheckUtils]: 13: Hoare triple {99#true} assume !true; {100#false} is VALID [2020-07-18 05:14:33,239 INFO L280 TraceCheckUtils]: 14: Hoare triple {100#false} SUMMARY for call write~int(~state~0, ~x~0.base, 8 + ~x~0.offset, 4); srcloc: L994-5 {100#false} is VALID [2020-07-18 05:14:33,240 INFO L280 TraceCheckUtils]: 15: Hoare triple {100#false} SUMMARY for call #t~mem6.base, #t~mem6.offset := read~$Pointer$(~head~0.base, ~head~0.offset, 4); srcloc: L1016 {100#false} is VALID [2020-07-18 05:14:33,240 INFO L280 TraceCheckUtils]: 16: Hoare triple {100#false} ~x~0.base, ~x~0.offset := #t~mem6.base, #t~mem6.offset; {100#false} is VALID [2020-07-18 05:14:33,240 INFO L280 TraceCheckUtils]: 17: Hoare triple {100#false} havoc #t~mem6.base, #t~mem6.offset; {100#false} is VALID [2020-07-18 05:14:33,241 INFO L280 TraceCheckUtils]: 18: Hoare triple {100#false} assume !(0 != ~x~0.base || 0 != ~x~0.offset); {100#false} is VALID [2020-07-18 05:14:33,241 INFO L280 TraceCheckUtils]: 19: Hoare triple {100#false} assume !false; {100#false} is VALID [2020-07-18 05:14:33,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-18 05:14:33,244 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1111227381] [2020-07-18 05:14:33,247 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-18 05:14:33,247 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-18 05:14:33,248 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043083047] [2020-07-18 05:14:33,255 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-07-18 05:14:33,258 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-18 05:14:33,263 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states. [2020-07-18 05:14:33,304 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 20 edges. 20 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 05:14:33,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-18 05:14:33,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-18 05:14:33,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-18 05:14:33,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-18 05:14:33,318 INFO L87 Difference]: Start difference. First operand 96 states. Second operand 3 states. [2020-07-18 05:14:33,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 05:14:33,825 INFO L93 Difference]: Finished difference Result 179 states and 215 transitions. [2020-07-18 05:14:33,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-18 05:14:33,825 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-07-18 05:14:33,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-18 05:14:33,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-18 05:14:33,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 215 transitions. [2020-07-18 05:14:33,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-18 05:14:33,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 215 transitions. [2020-07-18 05:14:33,855 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states and 215 transitions. [2020-07-18 05:14:34,146 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 215 edges. 215 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 05:14:34,164 INFO L225 Difference]: With dead ends: 179 [2020-07-18 05:14:34,164 INFO L226 Difference]: Without dead ends: 77 [2020-07-18 05:14:34,169 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-18 05:14:34,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-07-18 05:14:34,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2020-07-18 05:14:34,260 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-18 05:14:34,261 INFO L82 GeneralOperation]: Start isEquivalent. First operand 77 states. Second operand 77 states. [2020-07-18 05:14:34,262 INFO L74 IsIncluded]: Start isIncluded. First operand 77 states. Second operand 77 states. [2020-07-18 05:14:34,277 INFO L87 Difference]: Start difference. First operand 77 states. Second operand 77 states. [2020-07-18 05:14:34,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 05:14:34,284 INFO L93 Difference]: Finished difference Result 77 states and 82 transitions. [2020-07-18 05:14:34,284 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 82 transitions. [2020-07-18 05:14:34,285 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 05:14:34,285 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 05:14:34,285 INFO L74 IsIncluded]: Start isIncluded. First operand 77 states. Second operand 77 states. [2020-07-18 05:14:34,285 INFO L87 Difference]: Start difference. First operand 77 states. Second operand 77 states. [2020-07-18 05:14:34,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 05:14:34,297 INFO L93 Difference]: Finished difference Result 77 states and 82 transitions. [2020-07-18 05:14:34,298 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 82 transitions. [2020-07-18 05:14:34,299 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 05:14:34,299 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 05:14:34,299 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-18 05:14:34,299 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-18 05:14:34,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-07-18 05:14:34,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 82 transitions. [2020-07-18 05:14:34,307 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 82 transitions. Word has length 20 [2020-07-18 05:14:34,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-18 05:14:34,307 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 82 transitions. [2020-07-18 05:14:34,307 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-18 05:14:34,308 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 77 states and 82 transitions. [2020-07-18 05:14:34,403 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 82 edges. 82 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 05:14:34,403 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 82 transitions. [2020-07-18 05:14:34,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-18 05:14:34,404 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 05:14:34,405 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-18 05:14:34,405 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-18 05:14:34,405 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 05:14:34,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 05:14:34,406 INFO L82 PathProgramCache]: Analyzing trace with hash -2066269805, now seen corresponding path program 1 times [2020-07-18 05:14:34,406 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 05:14:34,406 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1072074551] [2020-07-18 05:14:34,407 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 05:14:34,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 05:14:34,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 05:14:34,733 INFO L280 TraceCheckUtils]: 0: Hoare triple {789#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0; {775#true} is VALID [2020-07-18 05:14:34,734 INFO L280 TraceCheckUtils]: 1: Hoare triple {775#true} #valid := #valid[0 := 0]; {775#true} is VALID [2020-07-18 05:14:34,734 INFO L280 TraceCheckUtils]: 2: Hoare triple {775#true} assume 0 < #StackHeapBarrier; {775#true} is VALID [2020-07-18 05:14:34,734 INFO L280 TraceCheckUtils]: 3: Hoare triple {775#true} assume true; {775#true} is VALID [2020-07-18 05:14:34,735 INFO L275 TraceCheckUtils]: 4: Hoare quadruple {775#true} {775#true} #187#return; {775#true} is VALID [2020-07-18 05:14:34,736 INFO L263 TraceCheckUtils]: 0: Hoare triple {775#true} call ULTIMATE.init(); {789#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} is VALID [2020-07-18 05:14:34,736 INFO L280 TraceCheckUtils]: 1: Hoare triple {789#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0; {775#true} is VALID [2020-07-18 05:14:34,737 INFO L280 TraceCheckUtils]: 2: Hoare triple {775#true} #valid := #valid[0 := 0]; {775#true} is VALID [2020-07-18 05:14:34,737 INFO L280 TraceCheckUtils]: 3: Hoare triple {775#true} assume 0 < #StackHeapBarrier; {775#true} is VALID [2020-07-18 05:14:34,737 INFO L280 TraceCheckUtils]: 4: Hoare triple {775#true} assume true; {775#true} is VALID [2020-07-18 05:14:34,738 INFO L275 TraceCheckUtils]: 5: Hoare quadruple {775#true} {775#true} #187#return; {775#true} is VALID [2020-07-18 05:14:34,738 INFO L263 TraceCheckUtils]: 6: Hoare triple {775#true} call #t~ret18 := main(); {775#true} is VALID [2020-07-18 05:14:34,739 INFO L280 TraceCheckUtils]: 7: Hoare triple {775#true} SUMMARY for call #t~malloc0.base, #t~malloc0.offset := #Ultimate.allocOnHeap(12); srcloc: mainENTRY {782#(and (not (= 0 |main_#t~malloc0.base|)) (= 0 |main_#t~malloc0.offset|))} is VALID [2020-07-18 05:14:34,740 INFO L280 TraceCheckUtils]: 8: Hoare triple {782#(and (not (= 0 |main_#t~malloc0.base|)) (= 0 |main_#t~malloc0.offset|))} ~head~0.base, ~head~0.offset := #t~malloc0.base, #t~malloc0.offset; {783#(and (not (= 0 main_~head~0.base)) (= 0 main_~head~0.offset))} is VALID [2020-07-18 05:14:34,742 INFO L280 TraceCheckUtils]: 9: Hoare triple {783#(and (not (= 0 main_~head~0.base)) (= 0 main_~head~0.offset))} SUMMARY for call write~$Pointer$(~head~0.base, ~head~0.offset, ~head~0.base, ~head~0.offset, 4); srcloc: L987 {784#(and (not (= 0 (select (select |#memory_$Pointer$.base| main_~head~0.base) main_~head~0.offset))) (= 0 main_~head~0.offset))} is VALID [2020-07-18 05:14:34,744 INFO L280 TraceCheckUtils]: 10: Hoare triple {784#(and (not (= 0 (select (select |#memory_$Pointer$.base| main_~head~0.base) main_~head~0.offset))) (= 0 main_~head~0.offset))} SUMMARY for call write~int(0, ~head~0.base, 8 + ~head~0.offset, 4); srcloc: L987-1 {784#(and (not (= 0 (select (select |#memory_$Pointer$.base| main_~head~0.base) main_~head~0.offset))) (= 0 main_~head~0.offset))} is VALID [2020-07-18 05:14:34,745 INFO L280 TraceCheckUtils]: 11: Hoare triple {784#(and (not (= 0 (select (select |#memory_$Pointer$.base| main_~head~0.base) main_~head~0.offset))) (= 0 main_~head~0.offset))} ~x~0.base, ~x~0.offset := ~head~0.base, ~head~0.offset; {785#(and (= main_~head~0.base main_~x~0.base) (not (= (+ main_~x~0.offset 8) main_~head~0.offset)) (not (= 0 (select (select |#memory_$Pointer$.base| main_~x~0.base) main_~head~0.offset))))} is VALID [2020-07-18 05:14:34,746 INFO L280 TraceCheckUtils]: 12: Hoare triple {785#(and (= main_~head~0.base main_~x~0.base) (not (= (+ main_~x~0.offset 8) main_~head~0.offset)) (not (= 0 (select (select |#memory_$Pointer$.base| main_~x~0.base) main_~head~0.offset))))} ~state~0 := 1; {785#(and (= main_~head~0.base main_~x~0.base) (not (= (+ main_~x~0.offset 8) main_~head~0.offset)) (not (= 0 (select (select |#memory_$Pointer$.base| main_~x~0.base) main_~head~0.offset))))} is VALID [2020-07-18 05:14:34,747 INFO L280 TraceCheckUtils]: 13: Hoare triple {785#(and (= main_~head~0.base main_~x~0.base) (not (= (+ main_~x~0.offset 8) main_~head~0.offset)) (not (= 0 (select (select |#memory_$Pointer$.base| main_~x~0.base) main_~head~0.offset))))} assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647; {785#(and (= main_~head~0.base main_~x~0.base) (not (= (+ main_~x~0.offset 8) main_~head~0.offset)) (not (= 0 (select (select |#memory_$Pointer$.base| main_~x~0.base) main_~head~0.offset))))} is VALID [2020-07-18 05:14:34,749 INFO L280 TraceCheckUtils]: 14: Hoare triple {785#(and (= main_~head~0.base main_~x~0.base) (not (= (+ main_~x~0.offset 8) main_~head~0.offset)) (not (= 0 (select (select |#memory_$Pointer$.base| main_~x~0.base) main_~head~0.offset))))} assume !(0 != #t~nondet1); {785#(and (= main_~head~0.base main_~x~0.base) (not (= (+ main_~x~0.offset 8) main_~head~0.offset)) (not (= 0 (select (select |#memory_$Pointer$.base| main_~x~0.base) main_~head~0.offset))))} is VALID [2020-07-18 05:14:34,750 INFO L280 TraceCheckUtils]: 15: Hoare triple {785#(and (= main_~head~0.base main_~x~0.base) (not (= (+ main_~x~0.offset 8) main_~head~0.offset)) (not (= 0 (select (select |#memory_$Pointer$.base| main_~x~0.base) main_~head~0.offset))))} havoc #t~nondet1; {785#(and (= main_~head~0.base main_~x~0.base) (not (= (+ main_~x~0.offset 8) main_~head~0.offset)) (not (= 0 (select (select |#memory_$Pointer$.base| main_~x~0.base) main_~head~0.offset))))} is VALID [2020-07-18 05:14:34,752 INFO L280 TraceCheckUtils]: 16: Hoare triple {785#(and (= main_~head~0.base main_~x~0.base) (not (= (+ main_~x~0.offset 8) main_~head~0.offset)) (not (= 0 (select (select |#memory_$Pointer$.base| main_~x~0.base) main_~head~0.offset))))} SUMMARY for call write~int(~state~0, ~x~0.base, 8 + ~x~0.offset, 4); srcloc: L994-5 {786#(not (= 0 (select (select |#memory_$Pointer$.base| main_~head~0.base) main_~head~0.offset)))} is VALID [2020-07-18 05:14:34,753 INFO L280 TraceCheckUtils]: 17: Hoare triple {786#(not (= 0 (select (select |#memory_$Pointer$.base| main_~head~0.base) main_~head~0.offset)))} SUMMARY for call #t~mem6.base, #t~mem6.offset := read~$Pointer$(~head~0.base, ~head~0.offset, 4); srcloc: L1016 {787#(not (= 0 |main_#t~mem6.base|))} is VALID [2020-07-18 05:14:34,754 INFO L280 TraceCheckUtils]: 18: Hoare triple {787#(not (= 0 |main_#t~mem6.base|))} ~x~0.base, ~x~0.offset := #t~mem6.base, #t~mem6.offset; {788#(not (= 0 main_~x~0.base))} is VALID [2020-07-18 05:14:34,755 INFO L280 TraceCheckUtils]: 19: Hoare triple {788#(not (= 0 main_~x~0.base))} havoc #t~mem6.base, #t~mem6.offset; {788#(not (= 0 main_~x~0.base))} is VALID [2020-07-18 05:14:34,756 INFO L280 TraceCheckUtils]: 20: Hoare triple {788#(not (= 0 main_~x~0.base))} assume !(0 != ~x~0.base || 0 != ~x~0.offset); {776#false} is VALID [2020-07-18 05:14:34,756 INFO L280 TraceCheckUtils]: 21: Hoare triple {776#false} assume !false; {776#false} is VALID [2020-07-18 05:14:34,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-18 05:14:34,760 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1072074551] [2020-07-18 05:14:34,761 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-18 05:14:34,761 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-07-18 05:14:34,761 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331004451] [2020-07-18 05:14:34,763 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 22 [2020-07-18 05:14:34,763 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-18 05:14:34,764 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 10 states. [2020-07-18 05:14:34,794 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 22 edges. 22 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 05:14:34,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-18 05:14:34,795 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-18 05:14:34,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-18 05:14:34,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-07-18 05:14:34,796 INFO L87 Difference]: Start difference. First operand 77 states and 82 transitions. Second operand 10 states. [2020-07-18 05:14:36,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 05:14:36,915 INFO L93 Difference]: Finished difference Result 155 states and 163 transitions. [2020-07-18 05:14:36,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-18 05:14:36,916 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 22 [2020-07-18 05:14:36,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-18 05:14:36,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-07-18 05:14:36,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 163 transitions. [2020-07-18 05:14:36,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-07-18 05:14:36,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 163 transitions. [2020-07-18 05:14:36,931 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 11 states and 163 transitions. [2020-07-18 05:14:37,164 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 163 edges. 163 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 05:14:37,171 INFO L225 Difference]: With dead ends: 155 [2020-07-18 05:14:37,171 INFO L226 Difference]: Without dead ends: 153 [2020-07-18 05:14:37,174 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2020-07-18 05:14:37,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-07-18 05:14:37,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 85. [2020-07-18 05:14:37,513 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-18 05:14:37,513 INFO L82 GeneralOperation]: Start isEquivalent. First operand 153 states. Second operand 85 states. [2020-07-18 05:14:37,514 INFO L74 IsIncluded]: Start isIncluded. First operand 153 states. Second operand 85 states. [2020-07-18 05:14:37,514 INFO L87 Difference]: Start difference. First operand 153 states. Second operand 85 states. [2020-07-18 05:14:37,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 05:14:37,528 INFO L93 Difference]: Finished difference Result 153 states and 161 transitions. [2020-07-18 05:14:37,528 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 161 transitions. [2020-07-18 05:14:37,530 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 05:14:37,530 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 05:14:37,530 INFO L74 IsIncluded]: Start isIncluded. First operand 85 states. Second operand 153 states. [2020-07-18 05:14:37,531 INFO L87 Difference]: Start difference. First operand 85 states. Second operand 153 states. [2020-07-18 05:14:37,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 05:14:37,539 INFO L93 Difference]: Finished difference Result 153 states and 161 transitions. [2020-07-18 05:14:37,539 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 161 transitions. [2020-07-18 05:14:37,540 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 05:14:37,540 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 05:14:37,541 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-18 05:14:37,541 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-18 05:14:37,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-07-18 05:14:37,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 91 transitions. [2020-07-18 05:14:37,545 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 91 transitions. Word has length 22 [2020-07-18 05:14:37,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-18 05:14:37,545 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 91 transitions. [2020-07-18 05:14:37,545 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-18 05:14:37,546 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 85 states and 91 transitions. [2020-07-18 05:14:37,687 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 91 edges. 91 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 05:14:37,687 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 91 transitions. [2020-07-18 05:14:37,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-07-18 05:14:37,688 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 05:14:37,689 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-18 05:14:37,689 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-18 05:14:37,689 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 05:14:37,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 05:14:37,691 INFO L82 PathProgramCache]: Analyzing trace with hash 807179936, now seen corresponding path program 1 times [2020-07-18 05:14:37,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 05:14:37,692 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1411473866] [2020-07-18 05:14:37,693 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 05:14:37,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 05:14:37,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 05:14:37,994 INFO L280 TraceCheckUtils]: 0: Hoare triple {1608#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0; {1592#true} is VALID [2020-07-18 05:14:37,995 INFO L280 TraceCheckUtils]: 1: Hoare triple {1592#true} #valid := #valid[0 := 0]; {1592#true} is VALID [2020-07-18 05:14:37,995 INFO L280 TraceCheckUtils]: 2: Hoare triple {1592#true} assume 0 < #StackHeapBarrier; {1592#true} is VALID [2020-07-18 05:14:37,995 INFO L280 TraceCheckUtils]: 3: Hoare triple {1592#true} assume true; {1592#true} is VALID [2020-07-18 05:14:37,996 INFO L275 TraceCheckUtils]: 4: Hoare quadruple {1592#true} {1592#true} #187#return; {1592#true} is VALID [2020-07-18 05:14:37,997 INFO L263 TraceCheckUtils]: 0: Hoare triple {1592#true} call ULTIMATE.init(); {1608#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} is VALID [2020-07-18 05:14:37,997 INFO L280 TraceCheckUtils]: 1: Hoare triple {1608#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0; {1592#true} is VALID [2020-07-18 05:14:37,998 INFO L280 TraceCheckUtils]: 2: Hoare triple {1592#true} #valid := #valid[0 := 0]; {1592#true} is VALID [2020-07-18 05:14:37,998 INFO L280 TraceCheckUtils]: 3: Hoare triple {1592#true} assume 0 < #StackHeapBarrier; {1592#true} is VALID [2020-07-18 05:14:37,998 INFO L280 TraceCheckUtils]: 4: Hoare triple {1592#true} assume true; {1592#true} is VALID [2020-07-18 05:14:37,999 INFO L275 TraceCheckUtils]: 5: Hoare quadruple {1592#true} {1592#true} #187#return; {1592#true} is VALID [2020-07-18 05:14:37,999 INFO L263 TraceCheckUtils]: 6: Hoare triple {1592#true} call #t~ret18 := main(); {1592#true} is VALID [2020-07-18 05:14:38,000 INFO L280 TraceCheckUtils]: 7: Hoare triple {1592#true} SUMMARY for call #t~malloc0.base, #t~malloc0.offset := #Ultimate.allocOnHeap(12); srcloc: mainENTRY {1599#(= 1 (select |#valid| |main_#t~malloc0.base|))} is VALID [2020-07-18 05:14:38,001 INFO L280 TraceCheckUtils]: 8: Hoare triple {1599#(= 1 (select |#valid| |main_#t~malloc0.base|))} ~head~0.base, ~head~0.offset := #t~malloc0.base, #t~malloc0.offset; {1600#(= 1 (select |#valid| main_~head~0.base))} is VALID [2020-07-18 05:14:38,002 INFO L280 TraceCheckUtils]: 9: Hoare triple {1600#(= 1 (select |#valid| main_~head~0.base))} SUMMARY for call write~$Pointer$(~head~0.base, ~head~0.offset, ~head~0.base, ~head~0.offset, 4); srcloc: L987 {1600#(= 1 (select |#valid| main_~head~0.base))} is VALID [2020-07-18 05:14:38,003 INFO L280 TraceCheckUtils]: 10: Hoare triple {1600#(= 1 (select |#valid| main_~head~0.base))} SUMMARY for call write~int(0, ~head~0.base, 8 + ~head~0.offset, 4); srcloc: L987-1 {1600#(= 1 (select |#valid| main_~head~0.base))} is VALID [2020-07-18 05:14:38,004 INFO L280 TraceCheckUtils]: 11: Hoare triple {1600#(= 1 (select |#valid| main_~head~0.base))} ~x~0.base, ~x~0.offset := ~head~0.base, ~head~0.offset; {1601#(= 1 (select |#valid| main_~x~0.base))} is VALID [2020-07-18 05:14:38,004 INFO L280 TraceCheckUtils]: 12: Hoare triple {1601#(= 1 (select |#valid| main_~x~0.base))} ~state~0 := 1; {1601#(= 1 (select |#valid| main_~x~0.base))} is VALID [2020-07-18 05:14:38,005 INFO L280 TraceCheckUtils]: 13: Hoare triple {1601#(= 1 (select |#valid| main_~x~0.base))} assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647; {1601#(= 1 (select |#valid| main_~x~0.base))} is VALID [2020-07-18 05:14:38,006 INFO L280 TraceCheckUtils]: 14: Hoare triple {1601#(= 1 (select |#valid| main_~x~0.base))} assume !!(0 != #t~nondet1); {1601#(= 1 (select |#valid| main_~x~0.base))} is VALID [2020-07-18 05:14:38,006 INFO L280 TraceCheckUtils]: 15: Hoare triple {1601#(= 1 (select |#valid| main_~x~0.base))} havoc #t~nondet1; {1601#(= 1 (select |#valid| main_~x~0.base))} is VALID [2020-07-18 05:14:38,007 INFO L280 TraceCheckUtils]: 16: Hoare triple {1601#(= 1 (select |#valid| main_~x~0.base))} SUMMARY for call #t~malloc2.base, #t~malloc2.offset := #Ultimate.allocOnHeap(12); srcloc: L997 {1602#(and (not (= 0 |main_#t~malloc2.base|)) (not (= |main_#t~malloc2.base| main_~x~0.base)))} is VALID [2020-07-18 05:14:38,009 INFO L280 TraceCheckUtils]: 17: Hoare triple {1602#(and (not (= 0 |main_#t~malloc2.base|)) (not (= |main_#t~malloc2.base| main_~x~0.base)))} SUMMARY for call write~$Pointer$(#t~malloc2.base, #t~malloc2.offset, ~x~0.base, ~x~0.offset, 4); srcloc: L997-1 {1603#(and (not (= 0 (select (select |#memory_$Pointer$.base| main_~x~0.base) main_~x~0.offset))) (not (= (select (select |#memory_$Pointer$.base| main_~x~0.base) main_~x~0.offset) main_~x~0.base)))} is VALID [2020-07-18 05:14:38,010 INFO L280 TraceCheckUtils]: 18: Hoare triple {1603#(and (not (= 0 (select (select |#memory_$Pointer$.base| main_~x~0.base) main_~x~0.offset))) (not (= (select (select |#memory_$Pointer$.base| main_~x~0.base) main_~x~0.offset) main_~x~0.base)))} SUMMARY for call #t~mem3.base, #t~mem3.offset := read~$Pointer$(~x~0.base, ~x~0.offset, 4); srcloc: L997-2 {1604#(and (not (= |main_#t~mem3.base| main_~x~0.base)) (not (= 0 (select (select |#memory_$Pointer$.base| main_~x~0.base) main_~x~0.offset))))} is VALID [2020-07-18 05:14:38,014 INFO L280 TraceCheckUtils]: 19: Hoare triple {1604#(and (not (= |main_#t~mem3.base| main_~x~0.base)) (not (= 0 (select (select |#memory_$Pointer$.base| main_~x~0.base) main_~x~0.offset))))} SUMMARY for call write~$Pointer$(~x~0.base, ~x~0.offset, #t~mem3.base, 4 + #t~mem3.offset, 4); srcloc: L998 {1605#(not (= 0 (select (select |#memory_$Pointer$.base| main_~x~0.base) main_~x~0.offset)))} is VALID [2020-07-18 05:14:38,015 INFO L280 TraceCheckUtils]: 20: Hoare triple {1605#(not (= 0 (select (select |#memory_$Pointer$.base| main_~x~0.base) main_~x~0.offset)))} havoc #t~mem3.base, #t~mem3.offset; {1605#(not (= 0 (select (select |#memory_$Pointer$.base| main_~x~0.base) main_~x~0.offset)))} is VALID [2020-07-18 05:14:38,015 INFO L280 TraceCheckUtils]: 21: Hoare triple {1605#(not (= 0 (select (select |#memory_$Pointer$.base| main_~x~0.base) main_~x~0.offset)))} SUMMARY for call #t~mem4.base, #t~mem4.offset := read~$Pointer$(~x~0.base, ~x~0.offset, 4); srcloc: L999 {1606#(not (= 0 |main_#t~mem4.base|))} is VALID [2020-07-18 05:14:38,016 INFO L280 TraceCheckUtils]: 22: Hoare triple {1606#(not (= 0 |main_#t~mem4.base|))} ~x~0.base, ~x~0.offset := #t~mem4.base, #t~mem4.offset; {1607#(not (= 0 main_~x~0.base))} is VALID [2020-07-18 05:14:38,017 INFO L280 TraceCheckUtils]: 23: Hoare triple {1607#(not (= 0 main_~x~0.base))} havoc #t~mem4.base, #t~mem4.offset; {1607#(not (= 0 main_~x~0.base))} is VALID [2020-07-18 05:14:38,017 INFO L280 TraceCheckUtils]: 24: Hoare triple {1607#(not (= 0 main_~x~0.base))} SUMMARY for call write~$Pointer$(~head~0.base, ~head~0.offset, ~x~0.base, ~x~0.offset, 4); srcloc: L1000 {1607#(not (= 0 main_~x~0.base))} is VALID [2020-07-18 05:14:38,018 INFO L280 TraceCheckUtils]: 25: Hoare triple {1607#(not (= 0 main_~x~0.base))} assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647; {1607#(not (= 0 main_~x~0.base))} is VALID [2020-07-18 05:14:38,018 INFO L280 TraceCheckUtils]: 26: Hoare triple {1607#(not (= 0 main_~x~0.base))} assume !(0 != #t~nondet5); {1607#(not (= 0 main_~x~0.base))} is VALID [2020-07-18 05:14:38,026 INFO L280 TraceCheckUtils]: 27: Hoare triple {1607#(not (= 0 main_~x~0.base))} havoc #t~nondet5; {1607#(not (= 0 main_~x~0.base))} is VALID [2020-07-18 05:14:38,026 INFO L280 TraceCheckUtils]: 28: Hoare triple {1607#(not (= 0 main_~x~0.base))} SUMMARY for call write~int(~state~0, ~x~0.base, 8 + ~x~0.offset, 4); srcloc: L1002-3 {1607#(not (= 0 main_~x~0.base))} is VALID [2020-07-18 05:14:38,028 INFO L280 TraceCheckUtils]: 29: Hoare triple {1607#(not (= 0 main_~x~0.base))} assume !(0 != ~x~0.base || 0 != ~x~0.offset); {1593#false} is VALID [2020-07-18 05:14:38,028 INFO L280 TraceCheckUtils]: 30: Hoare triple {1593#false} assume !false; {1593#false} is VALID [2020-07-18 05:14:38,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-18 05:14:38,031 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1411473866] [2020-07-18 05:14:38,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-18 05:14:38,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-07-18 05:14:38,031 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270644269] [2020-07-18 05:14:38,032 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 31 [2020-07-18 05:14:38,032 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-18 05:14:38,032 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 12 states. [2020-07-18 05:14:38,070 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 31 edges. 31 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 05:14:38,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-18 05:14:38,071 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-18 05:14:38,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-18 05:14:38,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-07-18 05:14:38,072 INFO L87 Difference]: Start difference. First operand 85 states and 91 transitions. Second operand 12 states. [2020-07-18 05:14:40,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 05:14:40,369 INFO L93 Difference]: Finished difference Result 122 states and 132 transitions. [2020-07-18 05:14:40,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-18 05:14:40,369 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 31 [2020-07-18 05:14:40,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-18 05:14:40,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-07-18 05:14:40,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2020-07-18 05:14:40,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-07-18 05:14:40,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2020-07-18 05:14:40,376 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 12 states and 130 transitions. [2020-07-18 05:14:40,558 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 130 edges. 130 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 05:14:40,563 INFO L225 Difference]: With dead ends: 122 [2020-07-18 05:14:40,563 INFO L226 Difference]: Without dead ends: 120 [2020-07-18 05:14:40,564 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2020-07-18 05:14:40,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-07-18 05:14:41,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 105. [2020-07-18 05:14:41,028 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-18 05:14:41,028 INFO L82 GeneralOperation]: Start isEquivalent. First operand 120 states. Second operand 105 states. [2020-07-18 05:14:41,028 INFO L74 IsIncluded]: Start isIncluded. First operand 120 states. Second operand 105 states. [2020-07-18 05:14:41,028 INFO L87 Difference]: Start difference. First operand 120 states. Second operand 105 states. [2020-07-18 05:14:41,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 05:14:41,036 INFO L93 Difference]: Finished difference Result 120 states and 130 transitions. [2020-07-18 05:14:41,037 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 130 transitions. [2020-07-18 05:14:41,037 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 05:14:41,038 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 05:14:41,038 INFO L74 IsIncluded]: Start isIncluded. First operand 105 states. Second operand 120 states. [2020-07-18 05:14:41,038 INFO L87 Difference]: Start difference. First operand 105 states. Second operand 120 states. [2020-07-18 05:14:41,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 05:14:41,045 INFO L93 Difference]: Finished difference Result 120 states and 130 transitions. [2020-07-18 05:14:41,045 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 130 transitions. [2020-07-18 05:14:41,046 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 05:14:41,046 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 05:14:41,047 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-18 05:14:41,047 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-18 05:14:41,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-07-18 05:14:41,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 114 transitions. [2020-07-18 05:14:41,053 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 114 transitions. Word has length 31 [2020-07-18 05:14:41,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-18 05:14:41,053 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 114 transitions. [2020-07-18 05:14:41,053 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-18 05:14:41,053 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 105 states and 114 transitions. [2020-07-18 05:14:41,304 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 114 edges. 114 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 05:14:41,304 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 114 transitions. [2020-07-18 05:14:41,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-07-18 05:14:41,306 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 05:14:41,307 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-18 05:14:41,307 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-18 05:14:41,307 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 05:14:41,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 05:14:41,308 INFO L82 PathProgramCache]: Analyzing trace with hash -988969633, now seen corresponding path program 1 times [2020-07-18 05:14:41,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 05:14:41,309 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [636127038] [2020-07-18 05:14:41,309 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 05:14:41,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 05:14:41,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 05:14:41,399 INFO L280 TraceCheckUtils]: 0: Hoare triple {2329#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0; {2321#true} is VALID [2020-07-18 05:14:41,400 INFO L280 TraceCheckUtils]: 1: Hoare triple {2321#true} #valid := #valid[0 := 0]; {2321#true} is VALID [2020-07-18 05:14:41,400 INFO L280 TraceCheckUtils]: 2: Hoare triple {2321#true} assume 0 < #StackHeapBarrier; {2321#true} is VALID [2020-07-18 05:14:41,400 INFO L280 TraceCheckUtils]: 3: Hoare triple {2321#true} assume true; {2321#true} is VALID [2020-07-18 05:14:41,400 INFO L275 TraceCheckUtils]: 4: Hoare quadruple {2321#true} {2321#true} #187#return; {2321#true} is VALID [2020-07-18 05:14:41,401 INFO L263 TraceCheckUtils]: 0: Hoare triple {2321#true} call ULTIMATE.init(); {2329#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} is VALID [2020-07-18 05:14:41,401 INFO L280 TraceCheckUtils]: 1: Hoare triple {2329#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0; {2321#true} is VALID [2020-07-18 05:14:41,402 INFO L280 TraceCheckUtils]: 2: Hoare triple {2321#true} #valid := #valid[0 := 0]; {2321#true} is VALID [2020-07-18 05:14:41,402 INFO L280 TraceCheckUtils]: 3: Hoare triple {2321#true} assume 0 < #StackHeapBarrier; {2321#true} is VALID [2020-07-18 05:14:41,402 INFO L280 TraceCheckUtils]: 4: Hoare triple {2321#true} assume true; {2321#true} is VALID [2020-07-18 05:14:41,402 INFO L275 TraceCheckUtils]: 5: Hoare quadruple {2321#true} {2321#true} #187#return; {2321#true} is VALID [2020-07-18 05:14:41,403 INFO L263 TraceCheckUtils]: 6: Hoare triple {2321#true} call #t~ret18 := main(); {2321#true} is VALID [2020-07-18 05:14:41,403 INFO L280 TraceCheckUtils]: 7: Hoare triple {2321#true} SUMMARY for call #t~malloc0.base, #t~malloc0.offset := #Ultimate.allocOnHeap(12); srcloc: mainENTRY {2321#true} is VALID [2020-07-18 05:14:41,403 INFO L280 TraceCheckUtils]: 8: Hoare triple {2321#true} ~head~0.base, ~head~0.offset := #t~malloc0.base, #t~malloc0.offset; {2321#true} is VALID [2020-07-18 05:14:41,403 INFO L280 TraceCheckUtils]: 9: Hoare triple {2321#true} SUMMARY for call write~$Pointer$(~head~0.base, ~head~0.offset, ~head~0.base, ~head~0.offset, 4); srcloc: L987 {2321#true} is VALID [2020-07-18 05:14:41,404 INFO L280 TraceCheckUtils]: 10: Hoare triple {2321#true} SUMMARY for call write~int(0, ~head~0.base, 8 + ~head~0.offset, 4); srcloc: L987-1 {2321#true} is VALID [2020-07-18 05:14:41,404 INFO L280 TraceCheckUtils]: 11: Hoare triple {2321#true} ~x~0.base, ~x~0.offset := ~head~0.base, ~head~0.offset; {2321#true} is VALID [2020-07-18 05:14:41,408 INFO L280 TraceCheckUtils]: 12: Hoare triple {2321#true} ~state~0 := 1; {2328#(= 1 main_~state~0)} is VALID [2020-07-18 05:14:41,408 INFO L280 TraceCheckUtils]: 13: Hoare triple {2328#(= 1 main_~state~0)} assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647; {2328#(= 1 main_~state~0)} is VALID [2020-07-18 05:14:41,409 INFO L280 TraceCheckUtils]: 14: Hoare triple {2328#(= 1 main_~state~0)} assume !!(0 != #t~nondet1); {2328#(= 1 main_~state~0)} is VALID [2020-07-18 05:14:41,409 INFO L280 TraceCheckUtils]: 15: Hoare triple {2328#(= 1 main_~state~0)} havoc #t~nondet1; {2328#(= 1 main_~state~0)} is VALID [2020-07-18 05:14:41,410 INFO L280 TraceCheckUtils]: 16: Hoare triple {2328#(= 1 main_~state~0)} SUMMARY for call #t~malloc2.base, #t~malloc2.offset := #Ultimate.allocOnHeap(12); srcloc: L997 {2328#(= 1 main_~state~0)} is VALID [2020-07-18 05:14:41,411 INFO L280 TraceCheckUtils]: 17: Hoare triple {2328#(= 1 main_~state~0)} SUMMARY for call write~$Pointer$(#t~malloc2.base, #t~malloc2.offset, ~x~0.base, ~x~0.offset, 4); srcloc: L997-1 {2328#(= 1 main_~state~0)} is VALID [2020-07-18 05:14:41,411 INFO L280 TraceCheckUtils]: 18: Hoare triple {2328#(= 1 main_~state~0)} SUMMARY for call #t~mem3.base, #t~mem3.offset := read~$Pointer$(~x~0.base, ~x~0.offset, 4); srcloc: L997-2 {2328#(= 1 main_~state~0)} is VALID [2020-07-18 05:14:41,412 INFO L280 TraceCheckUtils]: 19: Hoare triple {2328#(= 1 main_~state~0)} SUMMARY for call write~$Pointer$(~x~0.base, ~x~0.offset, #t~mem3.base, 4 + #t~mem3.offset, 4); srcloc: L998 {2328#(= 1 main_~state~0)} is VALID [2020-07-18 05:14:41,412 INFO L280 TraceCheckUtils]: 20: Hoare triple {2328#(= 1 main_~state~0)} havoc #t~mem3.base, #t~mem3.offset; {2328#(= 1 main_~state~0)} is VALID [2020-07-18 05:14:41,412 INFO L280 TraceCheckUtils]: 21: Hoare triple {2328#(= 1 main_~state~0)} SUMMARY for call #t~mem4.base, #t~mem4.offset := read~$Pointer$(~x~0.base, ~x~0.offset, 4); srcloc: L999 {2328#(= 1 main_~state~0)} is VALID [2020-07-18 05:14:41,413 INFO L280 TraceCheckUtils]: 22: Hoare triple {2328#(= 1 main_~state~0)} ~x~0.base, ~x~0.offset := #t~mem4.base, #t~mem4.offset; {2328#(= 1 main_~state~0)} is VALID [2020-07-18 05:14:41,413 INFO L280 TraceCheckUtils]: 23: Hoare triple {2328#(= 1 main_~state~0)} havoc #t~mem4.base, #t~mem4.offset; {2328#(= 1 main_~state~0)} is VALID [2020-07-18 05:14:41,414 INFO L280 TraceCheckUtils]: 24: Hoare triple {2328#(= 1 main_~state~0)} SUMMARY for call write~$Pointer$(~head~0.base, ~head~0.offset, ~x~0.base, ~x~0.offset, 4); srcloc: L1000 {2328#(= 1 main_~state~0)} is VALID [2020-07-18 05:14:41,414 INFO L280 TraceCheckUtils]: 25: Hoare triple {2328#(= 1 main_~state~0)} assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647; {2328#(= 1 main_~state~0)} is VALID [2020-07-18 05:14:41,415 INFO L280 TraceCheckUtils]: 26: Hoare triple {2328#(= 1 main_~state~0)} assume 0 != #t~nondet5; {2328#(= 1 main_~state~0)} is VALID [2020-07-18 05:14:41,416 INFO L280 TraceCheckUtils]: 27: Hoare triple {2328#(= 1 main_~state~0)} havoc #t~nondet5; {2328#(= 1 main_~state~0)} is VALID [2020-07-18 05:14:41,418 INFO L280 TraceCheckUtils]: 28: Hoare triple {2328#(= 1 main_~state~0)} assume !(1 == ~state~0); {2322#false} is VALID [2020-07-18 05:14:41,418 INFO L280 TraceCheckUtils]: 29: Hoare triple {2322#false} assume !(2 == ~state~0); {2322#false} is VALID [2020-07-18 05:14:41,418 INFO L280 TraceCheckUtils]: 30: Hoare triple {2322#false} SUMMARY for call write~int(~state~0, ~x~0.base, 8 + ~x~0.offset, 4); srcloc: L994-5 {2322#false} is VALID [2020-07-18 05:14:41,419 INFO L280 TraceCheckUtils]: 31: Hoare triple {2322#false} SUMMARY for call #t~mem6.base, #t~mem6.offset := read~$Pointer$(~head~0.base, ~head~0.offset, 4); srcloc: L1016 {2322#false} is VALID [2020-07-18 05:14:41,419 INFO L280 TraceCheckUtils]: 32: Hoare triple {2322#false} ~x~0.base, ~x~0.offset := #t~mem6.base, #t~mem6.offset; {2322#false} is VALID [2020-07-18 05:14:41,419 INFO L280 TraceCheckUtils]: 33: Hoare triple {2322#false} havoc #t~mem6.base, #t~mem6.offset; {2322#false} is VALID [2020-07-18 05:14:41,419 INFO L280 TraceCheckUtils]: 34: Hoare triple {2322#false} assume !(0 != ~x~0.base || 0 != ~x~0.offset); {2322#false} is VALID [2020-07-18 05:14:41,420 INFO L280 TraceCheckUtils]: 35: Hoare triple {2322#false} assume !false; {2322#false} is VALID [2020-07-18 05:14:41,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-18 05:14:41,422 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [636127038] [2020-07-18 05:14:41,422 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-18 05:14:41,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-18 05:14:41,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690431216] [2020-07-18 05:14:41,423 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2020-07-18 05:14:41,423 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-18 05:14:41,424 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states. [2020-07-18 05:14:41,475 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 36 edges. 36 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 05:14:41,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-18 05:14:41,476 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-18 05:14:41,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-18 05:14:41,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-18 05:14:41,477 INFO L87 Difference]: Start difference. First operand 105 states and 114 transitions. Second operand 4 states. [2020-07-18 05:14:42,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 05:14:42,679 INFO L93 Difference]: Finished difference Result 234 states and 252 transitions. [2020-07-18 05:14:42,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-18 05:14:42,680 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2020-07-18 05:14:42,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-18 05:14:42,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-18 05:14:42,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 216 transitions. [2020-07-18 05:14:42,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-18 05:14:42,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 216 transitions. [2020-07-18 05:14:42,687 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states and 216 transitions. [2020-07-18 05:14:42,936 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 216 edges. 216 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 05:14:42,947 INFO L225 Difference]: With dead ends: 234 [2020-07-18 05:14:42,947 INFO L226 Difference]: Without dead ends: 166 [2020-07-18 05:14:42,950 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-18 05:14:42,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-07-18 05:14:43,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 125. [2020-07-18 05:14:43,545 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-18 05:14:43,545 INFO L82 GeneralOperation]: Start isEquivalent. First operand 166 states. Second operand 125 states. [2020-07-18 05:14:43,545 INFO L74 IsIncluded]: Start isIncluded. First operand 166 states. Second operand 125 states. [2020-07-18 05:14:43,545 INFO L87 Difference]: Start difference. First operand 166 states. Second operand 125 states. [2020-07-18 05:14:43,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 05:14:43,554 INFO L93 Difference]: Finished difference Result 166 states and 176 transitions. [2020-07-18 05:14:43,555 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 176 transitions. [2020-07-18 05:14:43,556 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 05:14:43,556 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 05:14:43,556 INFO L74 IsIncluded]: Start isIncluded. First operand 125 states. Second operand 166 states. [2020-07-18 05:14:43,556 INFO L87 Difference]: Start difference. First operand 125 states. Second operand 166 states. [2020-07-18 05:14:43,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 05:14:43,563 INFO L93 Difference]: Finished difference Result 166 states and 176 transitions. [2020-07-18 05:14:43,563 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 176 transitions. [2020-07-18 05:14:43,564 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 05:14:43,566 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 05:14:43,566 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-18 05:14:43,566 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-18 05:14:43,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-07-18 05:14:43,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 135 transitions. [2020-07-18 05:14:43,574 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 135 transitions. Word has length 36 [2020-07-18 05:14:43,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-18 05:14:43,575 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 135 transitions. [2020-07-18 05:14:43,575 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-18 05:14:43,575 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 125 states and 135 transitions. [2020-07-18 05:14:43,857 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 135 edges. 135 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 05:14:43,857 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 135 transitions. [2020-07-18 05:14:43,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-07-18 05:14:43,859 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 05:14:43,859 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-18 05:14:43,859 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-18 05:14:43,859 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 05:14:43,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 05:14:43,860 INFO L82 PathProgramCache]: Analyzing trace with hash 1230029085, now seen corresponding path program 1 times [2020-07-18 05:14:43,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 05:14:43,860 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [707307693] [2020-07-18 05:14:43,861 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 05:14:43,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 05:14:44,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 05:14:44,396 INFO L280 TraceCheckUtils]: 0: Hoare triple {3400#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0; {3382#true} is VALID [2020-07-18 05:14:44,397 INFO L280 TraceCheckUtils]: 1: Hoare triple {3382#true} #valid := #valid[0 := 0]; {3382#true} is VALID [2020-07-18 05:14:44,397 INFO L280 TraceCheckUtils]: 2: Hoare triple {3382#true} assume 0 < #StackHeapBarrier; {3382#true} is VALID [2020-07-18 05:14:44,397 INFO L280 TraceCheckUtils]: 3: Hoare triple {3382#true} assume true; {3382#true} is VALID [2020-07-18 05:14:44,397 INFO L275 TraceCheckUtils]: 4: Hoare quadruple {3382#true} {3382#true} #187#return; {3382#true} is VALID [2020-07-18 05:14:44,399 INFO L263 TraceCheckUtils]: 0: Hoare triple {3382#true} call ULTIMATE.init(); {3400#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} is VALID [2020-07-18 05:14:44,399 INFO L280 TraceCheckUtils]: 1: Hoare triple {3400#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0; {3382#true} is VALID [2020-07-18 05:14:44,399 INFO L280 TraceCheckUtils]: 2: Hoare triple {3382#true} #valid := #valid[0 := 0]; {3382#true} is VALID [2020-07-18 05:14:44,399 INFO L280 TraceCheckUtils]: 3: Hoare triple {3382#true} assume 0 < #StackHeapBarrier; {3382#true} is VALID [2020-07-18 05:14:44,400 INFO L280 TraceCheckUtils]: 4: Hoare triple {3382#true} assume true; {3382#true} is VALID [2020-07-18 05:14:44,400 INFO L275 TraceCheckUtils]: 5: Hoare quadruple {3382#true} {3382#true} #187#return; {3382#true} is VALID [2020-07-18 05:14:44,400 INFO L263 TraceCheckUtils]: 6: Hoare triple {3382#true} call #t~ret18 := main(); {3382#true} is VALID [2020-07-18 05:14:44,402 INFO L280 TraceCheckUtils]: 7: Hoare triple {3382#true} SUMMARY for call #t~malloc0.base, #t~malloc0.offset := #Ultimate.allocOnHeap(12); srcloc: mainENTRY {3389#(= 0 |main_#t~malloc0.offset|)} is VALID [2020-07-18 05:14:44,403 INFO L280 TraceCheckUtils]: 8: Hoare triple {3389#(= 0 |main_#t~malloc0.offset|)} ~head~0.base, ~head~0.offset := #t~malloc0.base, #t~malloc0.offset; {3390#(= 0 main_~head~0.offset)} is VALID [2020-07-18 05:14:44,404 INFO L280 TraceCheckUtils]: 9: Hoare triple {3390#(= 0 main_~head~0.offset)} SUMMARY for call write~$Pointer$(~head~0.base, ~head~0.offset, ~head~0.base, ~head~0.offset, 4); srcloc: L987 {3391#(and (= (select (select |#memory_$Pointer$.offset| main_~head~0.base) main_~head~0.offset) main_~head~0.offset) (= 0 main_~head~0.offset) (= (select (select |#memory_$Pointer$.base| main_~head~0.base) main_~head~0.offset) main_~head~0.base))} is VALID [2020-07-18 05:14:44,407 INFO L280 TraceCheckUtils]: 10: Hoare triple {3391#(and (= (select (select |#memory_$Pointer$.offset| main_~head~0.base) main_~head~0.offset) main_~head~0.offset) (= 0 main_~head~0.offset) (= (select (select |#memory_$Pointer$.base| main_~head~0.base) main_~head~0.offset) main_~head~0.base))} SUMMARY for call write~int(0, ~head~0.base, 8 + ~head~0.offset, 4); srcloc: L987-1 {3391#(and (= (select (select |#memory_$Pointer$.offset| main_~head~0.base) main_~head~0.offset) main_~head~0.offset) (= 0 main_~head~0.offset) (= (select (select |#memory_$Pointer$.base| main_~head~0.base) main_~head~0.offset) main_~head~0.base))} is VALID [2020-07-18 05:14:44,408 INFO L280 TraceCheckUtils]: 11: Hoare triple {3391#(and (= (select (select |#memory_$Pointer$.offset| main_~head~0.base) main_~head~0.offset) main_~head~0.offset) (= 0 main_~head~0.offset) (= (select (select |#memory_$Pointer$.base| main_~head~0.base) main_~head~0.offset) main_~head~0.base))} ~x~0.base, ~x~0.offset := ~head~0.base, ~head~0.offset; {3392#(and (= main_~head~0.offset (select (select |#memory_$Pointer$.offset| main_~x~0.base) main_~head~0.offset)) (= 0 (select (select |#memory_$Pointer$.offset| main_~x~0.base) main_~head~0.offset)) (= main_~head~0.base main_~x~0.base) (not (= (+ main_~x~0.offset 8) main_~head~0.offset)) (= (select (select |#memory_$Pointer$.base| main_~x~0.base) main_~head~0.offset) main_~head~0.base))} is VALID [2020-07-18 05:14:44,410 INFO L280 TraceCheckUtils]: 12: Hoare triple {3392#(and (= main_~head~0.offset (select (select |#memory_$Pointer$.offset| main_~x~0.base) main_~head~0.offset)) (= 0 (select (select |#memory_$Pointer$.offset| main_~x~0.base) main_~head~0.offset)) (= main_~head~0.base main_~x~0.base) (not (= (+ main_~x~0.offset 8) main_~head~0.offset)) (= (select (select |#memory_$Pointer$.base| main_~x~0.base) main_~head~0.offset) main_~head~0.base))} ~state~0 := 1; {3392#(and (= main_~head~0.offset (select (select |#memory_$Pointer$.offset| main_~x~0.base) main_~head~0.offset)) (= 0 (select (select |#memory_$Pointer$.offset| main_~x~0.base) main_~head~0.offset)) (= main_~head~0.base main_~x~0.base) (not (= (+ main_~x~0.offset 8) main_~head~0.offset)) (= (select (select |#memory_$Pointer$.base| main_~x~0.base) main_~head~0.offset) main_~head~0.base))} is VALID [2020-07-18 05:14:44,411 INFO L280 TraceCheckUtils]: 13: Hoare triple {3392#(and (= main_~head~0.offset (select (select |#memory_$Pointer$.offset| main_~x~0.base) main_~head~0.offset)) (= 0 (select (select |#memory_$Pointer$.offset| main_~x~0.base) main_~head~0.offset)) (= main_~head~0.base main_~x~0.base) (not (= (+ main_~x~0.offset 8) main_~head~0.offset)) (= (select (select |#memory_$Pointer$.base| main_~x~0.base) main_~head~0.offset) main_~head~0.base))} assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647; {3392#(and (= main_~head~0.offset (select (select |#memory_$Pointer$.offset| main_~x~0.base) main_~head~0.offset)) (= 0 (select (select |#memory_$Pointer$.offset| main_~x~0.base) main_~head~0.offset)) (= main_~head~0.base main_~x~0.base) (not (= (+ main_~x~0.offset 8) main_~head~0.offset)) (= (select (select |#memory_$Pointer$.base| main_~x~0.base) main_~head~0.offset) main_~head~0.base))} is VALID [2020-07-18 05:14:44,412 INFO L280 TraceCheckUtils]: 14: Hoare triple {3392#(and (= main_~head~0.offset (select (select |#memory_$Pointer$.offset| main_~x~0.base) main_~head~0.offset)) (= 0 (select (select |#memory_$Pointer$.offset| main_~x~0.base) main_~head~0.offset)) (= main_~head~0.base main_~x~0.base) (not (= (+ main_~x~0.offset 8) main_~head~0.offset)) (= (select (select |#memory_$Pointer$.base| main_~x~0.base) main_~head~0.offset) main_~head~0.base))} assume !(0 != #t~nondet1); {3392#(and (= main_~head~0.offset (select (select |#memory_$Pointer$.offset| main_~x~0.base) main_~head~0.offset)) (= 0 (select (select |#memory_$Pointer$.offset| main_~x~0.base) main_~head~0.offset)) (= main_~head~0.base main_~x~0.base) (not (= (+ main_~x~0.offset 8) main_~head~0.offset)) (= (select (select |#memory_$Pointer$.base| main_~x~0.base) main_~head~0.offset) main_~head~0.base))} is VALID [2020-07-18 05:14:44,413 INFO L280 TraceCheckUtils]: 15: Hoare triple {3392#(and (= main_~head~0.offset (select (select |#memory_$Pointer$.offset| main_~x~0.base) main_~head~0.offset)) (= 0 (select (select |#memory_$Pointer$.offset| main_~x~0.base) main_~head~0.offset)) (= main_~head~0.base main_~x~0.base) (not (= (+ main_~x~0.offset 8) main_~head~0.offset)) (= (select (select |#memory_$Pointer$.base| main_~x~0.base) main_~head~0.offset) main_~head~0.base))} havoc #t~nondet1; {3392#(and (= main_~head~0.offset (select (select |#memory_$Pointer$.offset| main_~x~0.base) main_~head~0.offset)) (= 0 (select (select |#memory_$Pointer$.offset| main_~x~0.base) main_~head~0.offset)) (= main_~head~0.base main_~x~0.base) (not (= (+ main_~x~0.offset 8) main_~head~0.offset)) (= (select (select |#memory_$Pointer$.base| main_~x~0.base) main_~head~0.offset) main_~head~0.base))} is VALID [2020-07-18 05:14:44,415 INFO L280 TraceCheckUtils]: 16: Hoare triple {3392#(and (= main_~head~0.offset (select (select |#memory_$Pointer$.offset| main_~x~0.base) main_~head~0.offset)) (= 0 (select (select |#memory_$Pointer$.offset| main_~x~0.base) main_~head~0.offset)) (= main_~head~0.base main_~x~0.base) (not (= (+ main_~x~0.offset 8) main_~head~0.offset)) (= (select (select |#memory_$Pointer$.base| main_~x~0.base) main_~head~0.offset) main_~head~0.base))} SUMMARY for call write~int(~state~0, ~x~0.base, 8 + ~x~0.offset, 4); srcloc: L994-5 {3391#(and (= (select (select |#memory_$Pointer$.offset| main_~head~0.base) main_~head~0.offset) main_~head~0.offset) (= 0 main_~head~0.offset) (= (select (select |#memory_$Pointer$.base| main_~head~0.base) main_~head~0.offset) main_~head~0.base))} is VALID [2020-07-18 05:14:44,416 INFO L280 TraceCheckUtils]: 17: Hoare triple {3391#(and (= (select (select |#memory_$Pointer$.offset| main_~head~0.base) main_~head~0.offset) main_~head~0.offset) (= 0 main_~head~0.offset) (= (select (select |#memory_$Pointer$.base| main_~head~0.base) main_~head~0.offset) main_~head~0.base))} SUMMARY for call #t~mem6.base, #t~mem6.offset := read~$Pointer$(~head~0.base, ~head~0.offset, 4); srcloc: L1016 {3393#(and (= 0 |main_#t~mem6.offset|) (= |main_#t~mem6.base| (select (select |#memory_$Pointer$.base| |main_#t~mem6.base|) |main_#t~mem6.offset|)) (= (select (select |#memory_$Pointer$.offset| |main_#t~mem6.base|) |main_#t~mem6.offset|) 0))} is VALID [2020-07-18 05:14:44,417 INFO L280 TraceCheckUtils]: 18: Hoare triple {3393#(and (= 0 |main_#t~mem6.offset|) (= |main_#t~mem6.base| (select (select |#memory_$Pointer$.base| |main_#t~mem6.base|) |main_#t~mem6.offset|)) (= (select (select |#memory_$Pointer$.offset| |main_#t~mem6.base|) |main_#t~mem6.offset|) 0))} ~x~0.base, ~x~0.offset := #t~mem6.base, #t~mem6.offset; {3394#(and (= (select (select |#memory_$Pointer$.base| main_~x~0.base) main_~x~0.offset) main_~x~0.base) (= main_~x~0.offset 0) (= 0 (select (select |#memory_$Pointer$.offset| main_~x~0.base) main_~x~0.offset)))} is VALID [2020-07-18 05:14:44,418 INFO L280 TraceCheckUtils]: 19: Hoare triple {3394#(and (= (select (select |#memory_$Pointer$.base| main_~x~0.base) main_~x~0.offset) main_~x~0.base) (= main_~x~0.offset 0) (= 0 (select (select |#memory_$Pointer$.offset| main_~x~0.base) main_~x~0.offset)))} havoc #t~mem6.base, #t~mem6.offset; {3394#(and (= (select (select |#memory_$Pointer$.base| main_~x~0.base) main_~x~0.offset) main_~x~0.base) (= main_~x~0.offset 0) (= 0 (select (select |#memory_$Pointer$.offset| main_~x~0.base) main_~x~0.offset)))} is VALID [2020-07-18 05:14:44,419 INFO L280 TraceCheckUtils]: 20: Hoare triple {3394#(and (= (select (select |#memory_$Pointer$.base| main_~x~0.base) main_~x~0.offset) main_~x~0.base) (= main_~x~0.offset 0) (= 0 (select (select |#memory_$Pointer$.offset| main_~x~0.base) main_~x~0.offset)))} assume !!(0 != ~x~0.base || 0 != ~x~0.offset); {3394#(and (= (select (select |#memory_$Pointer$.base| main_~x~0.base) main_~x~0.offset) main_~x~0.base) (= main_~x~0.offset 0) (= 0 (select (select |#memory_$Pointer$.offset| main_~x~0.base) main_~x~0.offset)))} is VALID [2020-07-18 05:14:44,420 INFO L280 TraceCheckUtils]: 21: Hoare triple {3394#(and (= (select (select |#memory_$Pointer$.base| main_~x~0.base) main_~x~0.offset) main_~x~0.base) (= main_~x~0.offset 0) (= 0 (select (select |#memory_$Pointer$.offset| main_~x~0.base) main_~x~0.offset)))} goto; {3394#(and (= (select (select |#memory_$Pointer$.base| main_~x~0.base) main_~x~0.offset) main_~x~0.base) (= main_~x~0.offset 0) (= 0 (select (select |#memory_$Pointer$.offset| main_~x~0.base) main_~x~0.offset)))} is VALID [2020-07-18 05:14:44,421 INFO L280 TraceCheckUtils]: 22: Hoare triple {3394#(and (= (select (select |#memory_$Pointer$.base| main_~x~0.base) main_~x~0.offset) main_~x~0.base) (= main_~x~0.offset 0) (= 0 (select (select |#memory_$Pointer$.offset| main_~x~0.base) main_~x~0.offset)))} SUMMARY for call #t~mem7 := read~int(~x~0.base, 8 + ~x~0.offset, 4); srcloc: L1021-4 {3395#(and (= (select (select |#memory_int| main_~x~0.base) (+ main_~x~0.offset 8)) |main_#t~mem7|) (= (select (select |#memory_$Pointer$.base| main_~x~0.base) main_~x~0.offset) main_~x~0.base) (= main_~x~0.offset 0) (= 0 (select (select |#memory_$Pointer$.offset| main_~x~0.base) main_~x~0.offset)))} is VALID [2020-07-18 05:14:44,422 INFO L280 TraceCheckUtils]: 23: Hoare triple {3395#(and (= (select (select |#memory_int| main_~x~0.base) (+ main_~x~0.offset 8)) |main_#t~mem7|) (= (select (select |#memory_$Pointer$.base| main_~x~0.base) main_~x~0.offset) main_~x~0.base) (= main_~x~0.offset 0) (= 0 (select (select |#memory_$Pointer$.offset| main_~x~0.base) main_~x~0.offset)))} assume !!(0 != #t~mem7); {3396#(and (= (select (select |#memory_$Pointer$.base| main_~x~0.base) main_~x~0.offset) main_~x~0.base) (not (= 0 (select (select |#memory_int| main_~x~0.base) (+ main_~x~0.offset 8)))) (= main_~x~0.offset 0) (= 0 (select (select |#memory_$Pointer$.offset| main_~x~0.base) main_~x~0.offset)))} is VALID [2020-07-18 05:14:44,423 INFO L280 TraceCheckUtils]: 24: Hoare triple {3396#(and (= (select (select |#memory_$Pointer$.base| main_~x~0.base) main_~x~0.offset) main_~x~0.base) (not (= 0 (select (select |#memory_int| main_~x~0.base) (+ main_~x~0.offset 8)))) (= main_~x~0.offset 0) (= 0 (select (select |#memory_$Pointer$.offset| main_~x~0.base) main_~x~0.offset)))} havoc #t~mem7; {3396#(and (= (select (select |#memory_$Pointer$.base| main_~x~0.base) main_~x~0.offset) main_~x~0.base) (not (= 0 (select (select |#memory_int| main_~x~0.base) (+ main_~x~0.offset 8)))) (= main_~x~0.offset 0) (= 0 (select (select |#memory_$Pointer$.offset| main_~x~0.base) main_~x~0.offset)))} is VALID [2020-07-18 05:14:44,424 INFO L280 TraceCheckUtils]: 25: Hoare triple {3396#(and (= (select (select |#memory_$Pointer$.base| main_~x~0.base) main_~x~0.offset) main_~x~0.base) (not (= 0 (select (select |#memory_int| main_~x~0.base) (+ main_~x~0.offset 8)))) (= main_~x~0.offset 0) (= 0 (select (select |#memory_$Pointer$.offset| main_~x~0.base) main_~x~0.offset)))} SUMMARY for call #t~mem8.base, #t~mem8.offset := read~$Pointer$(~x~0.base, ~x~0.offset, 4); srcloc: L1023-25 {3397#(not (= 0 (select (select |#memory_int| |main_#t~mem8.base|) (+ |main_#t~mem8.offset| 8))))} is VALID [2020-07-18 05:14:44,424 INFO L280 TraceCheckUtils]: 26: Hoare triple {3397#(not (= 0 (select (select |#memory_int| |main_#t~mem8.base|) (+ |main_#t~mem8.offset| 8))))} SUMMARY for call #t~mem9 := read~int(#t~mem8.base, 8 + #t~mem8.offset, 4); srcloc: L1023-1 {3398#(not (= 0 |main_#t~mem9|))} is VALID [2020-07-18 05:14:44,425 INFO L280 TraceCheckUtils]: 27: Hoare triple {3398#(not (= 0 |main_#t~mem9|))} #t~short13 := 0 != #t~mem9; {3399#|main_#t~short13|} is VALID [2020-07-18 05:14:44,425 INFO L280 TraceCheckUtils]: 28: Hoare triple {3399#|main_#t~short13|} assume !#t~short13; {3383#false} is VALID [2020-07-18 05:14:44,426 INFO L280 TraceCheckUtils]: 29: Hoare triple {3383#false} assume !#t~short13; {3383#false} is VALID [2020-07-18 05:14:44,426 INFO L280 TraceCheckUtils]: 30: Hoare triple {3383#false} havoc #t~mem9; {3383#false} is VALID [2020-07-18 05:14:44,426 INFO L280 TraceCheckUtils]: 31: Hoare triple {3383#false} havoc #t~mem11; {3383#false} is VALID [2020-07-18 05:14:44,426 INFO L280 TraceCheckUtils]: 32: Hoare triple {3383#false} havoc #t~mem8.base, #t~mem8.offset; {3383#false} is VALID [2020-07-18 05:14:44,426 INFO L280 TraceCheckUtils]: 33: Hoare triple {3383#false} havoc #t~mem12; {3383#false} is VALID [2020-07-18 05:14:44,426 INFO L280 TraceCheckUtils]: 34: Hoare triple {3383#false} havoc #t~mem10.base, #t~mem10.offset; {3383#false} is VALID [2020-07-18 05:14:44,427 INFO L280 TraceCheckUtils]: 35: Hoare triple {3383#false} havoc #t~short13; {3383#false} is VALID [2020-07-18 05:14:44,427 INFO L280 TraceCheckUtils]: 36: Hoare triple {3383#false} assume !false; {3383#false} is VALID [2020-07-18 05:14:44,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-18 05:14:44,436 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [707307693] [2020-07-18 05:14:44,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-18 05:14:44,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-07-18 05:14:44,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899819229] [2020-07-18 05:14:44,437 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 37 [2020-07-18 05:14:44,438 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-18 05:14:44,438 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 14 states. [2020-07-18 05:14:44,483 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 37 edges. 37 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 05:14:44,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-18 05:14:44,483 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-18 05:14:44,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-18 05:14:44,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-07-18 05:14:44,484 INFO L87 Difference]: Start difference. First operand 125 states and 135 transitions. Second operand 14 states. [2020-07-18 05:14:47,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 05:14:47,949 INFO L93 Difference]: Finished difference Result 215 states and 228 transitions. [2020-07-18 05:14:47,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-07-18 05:14:47,949 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 37 [2020-07-18 05:14:47,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-18 05:14:47,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-07-18 05:14:47,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 187 transitions. [2020-07-18 05:14:47,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-07-18 05:14:47,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 187 transitions. [2020-07-18 05:14:47,966 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 20 states and 187 transitions. [2020-07-18 05:14:48,225 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 187 edges. 187 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 05:14:48,230 INFO L225 Difference]: With dead ends: 215 [2020-07-18 05:14:48,230 INFO L226 Difference]: Without dead ends: 185 [2020-07-18 05:14:48,231 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=206, Invalid=664, Unknown=0, NotChecked=0, Total=870 [2020-07-18 05:14:48,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-07-18 05:14:49,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 133. [2020-07-18 05:14:49,012 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-18 05:14:49,013 INFO L82 GeneralOperation]: Start isEquivalent. First operand 185 states. Second operand 133 states. [2020-07-18 05:14:49,013 INFO L74 IsIncluded]: Start isIncluded. First operand 185 states. Second operand 133 states. [2020-07-18 05:14:49,013 INFO L87 Difference]: Start difference. First operand 185 states. Second operand 133 states. [2020-07-18 05:14:49,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 05:14:49,021 INFO L93 Difference]: Finished difference Result 185 states and 196 transitions. [2020-07-18 05:14:49,021 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 196 transitions. [2020-07-18 05:14:49,022 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 05:14:49,022 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 05:14:49,022 INFO L74 IsIncluded]: Start isIncluded. First operand 133 states. Second operand 185 states. [2020-07-18 05:14:49,022 INFO L87 Difference]: Start difference. First operand 133 states. Second operand 185 states. [2020-07-18 05:14:49,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 05:14:49,029 INFO L93 Difference]: Finished difference Result 185 states and 196 transitions. [2020-07-18 05:14:49,030 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 196 transitions. [2020-07-18 05:14:49,030 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 05:14:49,030 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 05:14:49,031 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-18 05:14:49,031 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-18 05:14:49,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-07-18 05:14:49,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 143 transitions. [2020-07-18 05:14:49,036 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 143 transitions. Word has length 37 [2020-07-18 05:14:49,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-18 05:14:49,036 INFO L479 AbstractCegarLoop]: Abstraction has 133 states and 143 transitions. [2020-07-18 05:14:49,036 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-18 05:14:49,036 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 133 states and 143 transitions. [2020-07-18 05:14:49,363 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 143 edges. 143 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 05:14:49,364 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 143 transitions. [2020-07-18 05:14:49,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-07-18 05:14:49,365 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 05:14:49,365 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-18 05:14:49,366 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-18 05:14:49,366 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 05:14:49,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 05:14:49,367 INFO L82 PathProgramCache]: Analyzing trace with hash 626563183, now seen corresponding path program 1 times [2020-07-18 05:14:49,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 05:14:49,368 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1718058381] [2020-07-18 05:14:49,368 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 05:14:49,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 05:14:49,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 05:14:49,781 INFO L280 TraceCheckUtils]: 0: Hoare triple {4520#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0; {4501#true} is VALID [2020-07-18 05:14:49,781 INFO L280 TraceCheckUtils]: 1: Hoare triple {4501#true} #valid := #valid[0 := 0]; {4501#true} is VALID [2020-07-18 05:14:49,781 INFO L280 TraceCheckUtils]: 2: Hoare triple {4501#true} assume 0 < #StackHeapBarrier; {4501#true} is VALID [2020-07-18 05:14:49,781 INFO L280 TraceCheckUtils]: 3: Hoare triple {4501#true} assume true; {4501#true} is VALID [2020-07-18 05:14:49,782 INFO L275 TraceCheckUtils]: 4: Hoare quadruple {4501#true} {4501#true} #187#return; {4501#true} is VALID [2020-07-18 05:14:49,785 INFO L263 TraceCheckUtils]: 0: Hoare triple {4501#true} call ULTIMATE.init(); {4520#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} is VALID [2020-07-18 05:14:49,785 INFO L280 TraceCheckUtils]: 1: Hoare triple {4520#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0; {4501#true} is VALID [2020-07-18 05:14:49,785 INFO L280 TraceCheckUtils]: 2: Hoare triple {4501#true} #valid := #valid[0 := 0]; {4501#true} is VALID [2020-07-18 05:14:49,785 INFO L280 TraceCheckUtils]: 3: Hoare triple {4501#true} assume 0 < #StackHeapBarrier; {4501#true} is VALID [2020-07-18 05:14:49,786 INFO L280 TraceCheckUtils]: 4: Hoare triple {4501#true} assume true; {4501#true} is VALID [2020-07-18 05:14:49,786 INFO L275 TraceCheckUtils]: 5: Hoare quadruple {4501#true} {4501#true} #187#return; {4501#true} is VALID [2020-07-18 05:14:49,786 INFO L263 TraceCheckUtils]: 6: Hoare triple {4501#true} call #t~ret18 := main(); {4501#true} is VALID [2020-07-18 05:14:49,788 INFO L280 TraceCheckUtils]: 7: Hoare triple {4501#true} SUMMARY for call #t~malloc0.base, #t~malloc0.offset := #Ultimate.allocOnHeap(12); srcloc: mainENTRY {4508#(= 1 (select |#valid| |main_#t~malloc0.base|))} is VALID [2020-07-18 05:14:49,789 INFO L280 TraceCheckUtils]: 8: Hoare triple {4508#(= 1 (select |#valid| |main_#t~malloc0.base|))} ~head~0.base, ~head~0.offset := #t~malloc0.base, #t~malloc0.offset; {4509#(= 1 (select |#valid| main_~head~0.base))} is VALID [2020-07-18 05:14:49,790 INFO L280 TraceCheckUtils]: 9: Hoare triple {4509#(= 1 (select |#valid| main_~head~0.base))} SUMMARY for call write~$Pointer$(~head~0.base, ~head~0.offset, ~head~0.base, ~head~0.offset, 4); srcloc: L987 {4509#(= 1 (select |#valid| main_~head~0.base))} is VALID [2020-07-18 05:14:49,791 INFO L280 TraceCheckUtils]: 10: Hoare triple {4509#(= 1 (select |#valid| main_~head~0.base))} SUMMARY for call write~int(0, ~head~0.base, 8 + ~head~0.offset, 4); srcloc: L987-1 {4509#(= 1 (select |#valid| main_~head~0.base))} is VALID [2020-07-18 05:14:49,794 INFO L280 TraceCheckUtils]: 11: Hoare triple {4509#(= 1 (select |#valid| main_~head~0.base))} ~x~0.base, ~x~0.offset := ~head~0.base, ~head~0.offset; {4510#(and (= main_~x~0.offset main_~head~0.offset) (= main_~head~0.base main_~x~0.base) (= 1 (select |#valid| main_~x~0.base)))} is VALID [2020-07-18 05:14:49,796 INFO L280 TraceCheckUtils]: 12: Hoare triple {4510#(and (= main_~x~0.offset main_~head~0.offset) (= main_~head~0.base main_~x~0.base) (= 1 (select |#valid| main_~x~0.base)))} ~state~0 := 1; {4510#(and (= main_~x~0.offset main_~head~0.offset) (= main_~head~0.base main_~x~0.base) (= 1 (select |#valid| main_~x~0.base)))} is VALID [2020-07-18 05:14:49,797 INFO L280 TraceCheckUtils]: 13: Hoare triple {4510#(and (= main_~x~0.offset main_~head~0.offset) (= main_~head~0.base main_~x~0.base) (= 1 (select |#valid| main_~x~0.base)))} assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647; {4510#(and (= main_~x~0.offset main_~head~0.offset) (= main_~head~0.base main_~x~0.base) (= 1 (select |#valid| main_~x~0.base)))} is VALID [2020-07-18 05:14:49,798 INFO L280 TraceCheckUtils]: 14: Hoare triple {4510#(and (= main_~x~0.offset main_~head~0.offset) (= main_~head~0.base main_~x~0.base) (= 1 (select |#valid| main_~x~0.base)))} assume !!(0 != #t~nondet1); {4510#(and (= main_~x~0.offset main_~head~0.offset) (= main_~head~0.base main_~x~0.base) (= 1 (select |#valid| main_~x~0.base)))} is VALID [2020-07-18 05:14:49,799 INFO L280 TraceCheckUtils]: 15: Hoare triple {4510#(and (= main_~x~0.offset main_~head~0.offset) (= main_~head~0.base main_~x~0.base) (= 1 (select |#valid| main_~x~0.base)))} havoc #t~nondet1; {4510#(and (= main_~x~0.offset main_~head~0.offset) (= main_~head~0.base main_~x~0.base) (= 1 (select |#valid| main_~x~0.base)))} is VALID [2020-07-18 05:14:49,804 INFO L280 TraceCheckUtils]: 16: Hoare triple {4510#(and (= main_~x~0.offset main_~head~0.offset) (= main_~head~0.base main_~x~0.base) (= 1 (select |#valid| main_~x~0.base)))} SUMMARY for call #t~malloc2.base, #t~malloc2.offset := #Ultimate.allocOnHeap(12); srcloc: L997 {4511#(and (= 0 |main_#t~malloc2.offset|) (= main_~x~0.offset main_~head~0.offset) (= main_~head~0.base main_~x~0.base) (not (= |main_#t~malloc2.base| main_~x~0.base)))} is VALID [2020-07-18 05:14:49,806 INFO L280 TraceCheckUtils]: 17: Hoare triple {4511#(and (= 0 |main_#t~malloc2.offset|) (= main_~x~0.offset main_~head~0.offset) (= main_~head~0.base main_~x~0.base) (not (= |main_#t~malloc2.base| main_~x~0.base)))} SUMMARY for call write~$Pointer$(#t~malloc2.base, #t~malloc2.offset, ~x~0.base, ~x~0.offset, 4); srcloc: L997-1 {4512#(and (= main_~x~0.offset main_~head~0.offset) (= main_~head~0.base main_~x~0.base) (= 0 (select (select |#memory_$Pointer$.offset| main_~x~0.base) main_~x~0.offset)) (not (= (select (select |#memory_$Pointer$.base| main_~x~0.base) main_~x~0.offset) main_~x~0.base)))} is VALID [2020-07-18 05:14:49,807 INFO L280 TraceCheckUtils]: 18: Hoare triple {4512#(and (= main_~x~0.offset main_~head~0.offset) (= main_~head~0.base main_~x~0.base) (= 0 (select (select |#memory_$Pointer$.offset| main_~x~0.base) main_~x~0.offset)) (not (= (select (select |#memory_$Pointer$.base| main_~x~0.base) main_~x~0.offset) main_~x~0.base)))} SUMMARY for call #t~mem3.base, #t~mem3.offset := read~$Pointer$(~x~0.base, ~x~0.offset, 4); srcloc: L997-2 {4513#(and (not (= |main_#t~mem3.base| main_~x~0.base)) (= main_~x~0.offset main_~head~0.offset) (= (select (select |#memory_$Pointer$.base| main_~x~0.base) main_~x~0.offset) |main_#t~mem3.base|) (= main_~head~0.base main_~x~0.base) (= 0 (select (select |#memory_$Pointer$.offset| main_~x~0.base) main_~x~0.offset)))} is VALID [2020-07-18 05:14:49,809 INFO L280 TraceCheckUtils]: 19: Hoare triple {4513#(and (not (= |main_#t~mem3.base| main_~x~0.base)) (= main_~x~0.offset main_~head~0.offset) (= (select (select |#memory_$Pointer$.base| main_~x~0.base) main_~x~0.offset) |main_#t~mem3.base|) (= main_~head~0.base main_~x~0.base) (= 0 (select (select |#memory_$Pointer$.offset| main_~x~0.base) main_~x~0.offset)))} SUMMARY for call write~$Pointer$(~x~0.base, ~x~0.offset, #t~mem3.base, 4 + #t~mem3.offset, 4); srcloc: L998 {4512#(and (= main_~x~0.offset main_~head~0.offset) (= main_~head~0.base main_~x~0.base) (= 0 (select (select |#memory_$Pointer$.offset| main_~x~0.base) main_~x~0.offset)) (not (= (select (select |#memory_$Pointer$.base| main_~x~0.base) main_~x~0.offset) main_~x~0.base)))} is VALID [2020-07-18 05:14:49,811 INFO L280 TraceCheckUtils]: 20: Hoare triple {4512#(and (= main_~x~0.offset main_~head~0.offset) (= main_~head~0.base main_~x~0.base) (= 0 (select (select |#memory_$Pointer$.offset| main_~x~0.base) main_~x~0.offset)) (not (= (select (select |#memory_$Pointer$.base| main_~x~0.base) main_~x~0.offset) main_~x~0.base)))} havoc #t~mem3.base, #t~mem3.offset; {4512#(and (= main_~x~0.offset main_~head~0.offset) (= main_~head~0.base main_~x~0.base) (= 0 (select (select |#memory_$Pointer$.offset| main_~x~0.base) main_~x~0.offset)) (not (= (select (select |#memory_$Pointer$.base| main_~x~0.base) main_~x~0.offset) main_~x~0.base)))} is VALID [2020-07-18 05:14:49,811 INFO L280 TraceCheckUtils]: 21: Hoare triple {4512#(and (= main_~x~0.offset main_~head~0.offset) (= main_~head~0.base main_~x~0.base) (= 0 (select (select |#memory_$Pointer$.offset| main_~x~0.base) main_~x~0.offset)) (not (= (select (select |#memory_$Pointer$.base| main_~x~0.base) main_~x~0.offset) main_~x~0.base)))} SUMMARY for call #t~mem4.base, #t~mem4.offset := read~$Pointer$(~x~0.base, ~x~0.offset, 4); srcloc: L999 {4514#(and (not (= |main_#t~mem4.base| main_~head~0.base)) (= 0 |main_#t~mem4.offset|) (= (select (select |#memory_$Pointer$.base| main_~head~0.base) main_~head~0.offset) |main_#t~mem4.base|))} is VALID [2020-07-18 05:14:49,813 INFO L280 TraceCheckUtils]: 22: Hoare triple {4514#(and (not (= |main_#t~mem4.base| main_~head~0.base)) (= 0 |main_#t~mem4.offset|) (= (select (select |#memory_$Pointer$.base| main_~head~0.base) main_~head~0.offset) |main_#t~mem4.base|))} ~x~0.base, ~x~0.offset := #t~mem4.base, #t~mem4.offset; {4515#(and (not (= main_~head~0.base main_~x~0.base)) (= (select (select (store |#memory_$Pointer$.base| main_~x~0.base (store (select |#memory_$Pointer$.base| main_~x~0.base) main_~x~0.offset main_~head~0.base)) main_~head~0.base) main_~head~0.offset) main_~x~0.base) (= main_~x~0.offset 0))} is VALID [2020-07-18 05:14:49,814 INFO L280 TraceCheckUtils]: 23: Hoare triple {4515#(and (not (= main_~head~0.base main_~x~0.base)) (= (select (select (store |#memory_$Pointer$.base| main_~x~0.base (store (select |#memory_$Pointer$.base| main_~x~0.base) main_~x~0.offset main_~head~0.base)) main_~head~0.base) main_~head~0.offset) main_~x~0.base) (= main_~x~0.offset 0))} havoc #t~mem4.base, #t~mem4.offset; {4515#(and (not (= main_~head~0.base main_~x~0.base)) (= (select (select (store |#memory_$Pointer$.base| main_~x~0.base (store (select |#memory_$Pointer$.base| main_~x~0.base) main_~x~0.offset main_~head~0.base)) main_~head~0.base) main_~head~0.offset) main_~x~0.base) (= main_~x~0.offset 0))} is VALID [2020-07-18 05:14:49,815 INFO L280 TraceCheckUtils]: 24: Hoare triple {4515#(and (not (= main_~head~0.base main_~x~0.base)) (= (select (select (store |#memory_$Pointer$.base| main_~x~0.base (store (select |#memory_$Pointer$.base| main_~x~0.base) main_~x~0.offset main_~head~0.base)) main_~head~0.base) main_~head~0.offset) main_~x~0.base) (= main_~x~0.offset 0))} SUMMARY for call write~$Pointer$(~head~0.base, ~head~0.offset, ~x~0.base, ~x~0.offset, 4); srcloc: L1000 {4515#(and (not (= main_~head~0.base main_~x~0.base)) (= (select (select (store |#memory_$Pointer$.base| main_~x~0.base (store (select |#memory_$Pointer$.base| main_~x~0.base) main_~x~0.offset main_~head~0.base)) main_~head~0.base) main_~head~0.offset) main_~x~0.base) (= main_~x~0.offset 0))} is VALID [2020-07-18 05:14:49,815 INFO L280 TraceCheckUtils]: 25: Hoare triple {4515#(and (not (= main_~head~0.base main_~x~0.base)) (= (select (select (store |#memory_$Pointer$.base| main_~x~0.base (store (select |#memory_$Pointer$.base| main_~x~0.base) main_~x~0.offset main_~head~0.base)) main_~head~0.base) main_~head~0.offset) main_~x~0.base) (= main_~x~0.offset 0))} assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647; {4515#(and (not (= main_~head~0.base main_~x~0.base)) (= (select (select (store |#memory_$Pointer$.base| main_~x~0.base (store (select |#memory_$Pointer$.base| main_~x~0.base) main_~x~0.offset main_~head~0.base)) main_~head~0.base) main_~head~0.offset) main_~x~0.base) (= main_~x~0.offset 0))} is VALID [2020-07-18 05:14:49,816 INFO L280 TraceCheckUtils]: 26: Hoare triple {4515#(and (not (= main_~head~0.base main_~x~0.base)) (= (select (select (store |#memory_$Pointer$.base| main_~x~0.base (store (select |#memory_$Pointer$.base| main_~x~0.base) main_~x~0.offset main_~head~0.base)) main_~head~0.base) main_~head~0.offset) main_~x~0.base) (= main_~x~0.offset 0))} assume !(0 != #t~nondet5); {4515#(and (not (= main_~head~0.base main_~x~0.base)) (= (select (select (store |#memory_$Pointer$.base| main_~x~0.base (store (select |#memory_$Pointer$.base| main_~x~0.base) main_~x~0.offset main_~head~0.base)) main_~head~0.base) main_~head~0.offset) main_~x~0.base) (= main_~x~0.offset 0))} is VALID [2020-07-18 05:14:49,822 INFO L280 TraceCheckUtils]: 27: Hoare triple {4515#(and (not (= main_~head~0.base main_~x~0.base)) (= (select (select (store |#memory_$Pointer$.base| main_~x~0.base (store (select |#memory_$Pointer$.base| main_~x~0.base) main_~x~0.offset main_~head~0.base)) main_~head~0.base) main_~head~0.offset) main_~x~0.base) (= main_~x~0.offset 0))} havoc #t~nondet5; {4515#(and (not (= main_~head~0.base main_~x~0.base)) (= (select (select (store |#memory_$Pointer$.base| main_~x~0.base (store (select |#memory_$Pointer$.base| main_~x~0.base) main_~x~0.offset main_~head~0.base)) main_~head~0.base) main_~head~0.offset) main_~x~0.base) (= main_~x~0.offset 0))} is VALID [2020-07-18 05:14:49,825 INFO L280 TraceCheckUtils]: 28: Hoare triple {4515#(and (not (= main_~head~0.base main_~x~0.base)) (= (select (select (store |#memory_$Pointer$.base| main_~x~0.base (store (select |#memory_$Pointer$.base| main_~x~0.base) main_~x~0.offset main_~head~0.base)) main_~head~0.base) main_~head~0.offset) main_~x~0.base) (= main_~x~0.offset 0))} SUMMARY for call write~int(~state~0, ~x~0.base, 8 + ~x~0.offset, 4); srcloc: L1002-3 {4515#(and (not (= main_~head~0.base main_~x~0.base)) (= (select (select (store |#memory_$Pointer$.base| main_~x~0.base (store (select |#memory_$Pointer$.base| main_~x~0.base) main_~x~0.offset main_~head~0.base)) main_~head~0.base) main_~head~0.offset) main_~x~0.base) (= main_~x~0.offset 0))} is VALID [2020-07-18 05:14:49,826 INFO L280 TraceCheckUtils]: 29: Hoare triple {4515#(and (not (= main_~head~0.base main_~x~0.base)) (= (select (select (store |#memory_$Pointer$.base| main_~x~0.base (store (select |#memory_$Pointer$.base| main_~x~0.base) main_~x~0.offset main_~head~0.base)) main_~head~0.base) main_~head~0.offset) main_~x~0.base) (= main_~x~0.offset 0))} assume !!(0 != ~x~0.base || 0 != ~x~0.offset); {4516#(and (not (= 0 (select (select |#memory_$Pointer$.base| main_~head~0.base) main_~head~0.offset))) (not (= main_~head~0.base main_~x~0.base)))} is VALID [2020-07-18 05:14:49,826 INFO L280 TraceCheckUtils]: 30: Hoare triple {4516#(and (not (= 0 (select (select |#memory_$Pointer$.base| main_~head~0.base) main_~head~0.offset))) (not (= main_~head~0.base main_~x~0.base)))} goto; {4516#(and (not (= 0 (select (select |#memory_$Pointer$.base| main_~head~0.base) main_~head~0.offset))) (not (= main_~head~0.base main_~x~0.base)))} is VALID [2020-07-18 05:14:49,827 INFO L280 TraceCheckUtils]: 31: Hoare triple {4516#(and (not (= 0 (select (select |#memory_$Pointer$.base| main_~head~0.base) main_~head~0.offset))) (not (= main_~head~0.base main_~x~0.base)))} assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647; {4516#(and (not (= 0 (select (select |#memory_$Pointer$.base| main_~head~0.base) main_~head~0.offset))) (not (= main_~head~0.base main_~x~0.base)))} is VALID [2020-07-18 05:14:49,827 INFO L280 TraceCheckUtils]: 32: Hoare triple {4516#(and (not (= 0 (select (select |#memory_$Pointer$.base| main_~head~0.base) main_~head~0.offset))) (not (= main_~head~0.base main_~x~0.base)))} assume !(0 != #t~nondet1); {4516#(and (not (= 0 (select (select |#memory_$Pointer$.base| main_~head~0.base) main_~head~0.offset))) (not (= main_~head~0.base main_~x~0.base)))} is VALID [2020-07-18 05:14:49,828 INFO L280 TraceCheckUtils]: 33: Hoare triple {4516#(and (not (= 0 (select (select |#memory_$Pointer$.base| main_~head~0.base) main_~head~0.offset))) (not (= main_~head~0.base main_~x~0.base)))} havoc #t~nondet1; {4516#(and (not (= 0 (select (select |#memory_$Pointer$.base| main_~head~0.base) main_~head~0.offset))) (not (= main_~head~0.base main_~x~0.base)))} is VALID [2020-07-18 05:14:49,829 INFO L280 TraceCheckUtils]: 34: Hoare triple {4516#(and (not (= 0 (select (select |#memory_$Pointer$.base| main_~head~0.base) main_~head~0.offset))) (not (= main_~head~0.base main_~x~0.base)))} SUMMARY for call write~int(~state~0, ~x~0.base, 8 + ~x~0.offset, 4); srcloc: L994-5 {4517#(not (= 0 (select (select |#memory_$Pointer$.base| main_~head~0.base) main_~head~0.offset)))} is VALID [2020-07-18 05:14:49,830 INFO L280 TraceCheckUtils]: 35: Hoare triple {4517#(not (= 0 (select (select |#memory_$Pointer$.base| main_~head~0.base) main_~head~0.offset)))} SUMMARY for call #t~mem6.base, #t~mem6.offset := read~$Pointer$(~head~0.base, ~head~0.offset, 4); srcloc: L1016 {4518#(not (= 0 |main_#t~mem6.base|))} is VALID [2020-07-18 05:14:49,830 INFO L280 TraceCheckUtils]: 36: Hoare triple {4518#(not (= 0 |main_#t~mem6.base|))} ~x~0.base, ~x~0.offset := #t~mem6.base, #t~mem6.offset; {4519#(not (= 0 main_~x~0.base))} is VALID [2020-07-18 05:14:49,831 INFO L280 TraceCheckUtils]: 37: Hoare triple {4519#(not (= 0 main_~x~0.base))} havoc #t~mem6.base, #t~mem6.offset; {4519#(not (= 0 main_~x~0.base))} is VALID [2020-07-18 05:14:49,832 INFO L280 TraceCheckUtils]: 38: Hoare triple {4519#(not (= 0 main_~x~0.base))} assume !(0 != ~x~0.base || 0 != ~x~0.offset); {4502#false} is VALID [2020-07-18 05:14:49,832 INFO L280 TraceCheckUtils]: 39: Hoare triple {4502#false} assume !false; {4502#false} is VALID [2020-07-18 05:14:49,838 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-18 05:14:49,839 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1718058381] [2020-07-18 05:14:49,839 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-18 05:14:49,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-07-18 05:14:49,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196815889] [2020-07-18 05:14:49,840 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 40 [2020-07-18 05:14:49,840 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-18 05:14:49,840 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 15 states. [2020-07-18 05:14:49,899 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 40 edges. 40 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 05:14:49,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-07-18 05:14:49,900 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-18 05:14:49,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-07-18 05:14:49,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2020-07-18 05:14:49,901 INFO L87 Difference]: Start difference. First operand 133 states and 143 transitions. Second operand 15 states. [2020-07-18 05:14:54,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 05:14:54,244 INFO L93 Difference]: Finished difference Result 227 states and 241 transitions. [2020-07-18 05:14:54,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-07-18 05:14:54,244 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 40 [2020-07-18 05:14:54,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-18 05:14:54,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-07-18 05:14:54,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 192 transitions. [2020-07-18 05:14:54,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-07-18 05:14:54,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 192 transitions. [2020-07-18 05:14:54,256 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 17 states and 192 transitions. [2020-07-18 05:14:54,543 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 192 edges. 192 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 05:14:54,548 INFO L225 Difference]: With dead ends: 227 [2020-07-18 05:14:54,548 INFO L226 Difference]: Without dead ends: 225 [2020-07-18 05:14:54,549 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=147, Invalid=609, Unknown=0, NotChecked=0, Total=756 [2020-07-18 05:14:54,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2020-07-18 05:14:55,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 145. [2020-07-18 05:14:55,424 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-18 05:14:55,424 INFO L82 GeneralOperation]: Start isEquivalent. First operand 225 states. Second operand 145 states. [2020-07-18 05:14:55,424 INFO L74 IsIncluded]: Start isIncluded. First operand 225 states. Second operand 145 states. [2020-07-18 05:14:55,425 INFO L87 Difference]: Start difference. First operand 225 states. Second operand 145 states. [2020-07-18 05:14:55,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 05:14:55,433 INFO L93 Difference]: Finished difference Result 225 states and 239 transitions. [2020-07-18 05:14:55,434 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 239 transitions. [2020-07-18 05:14:55,434 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 05:14:55,435 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 05:14:55,435 INFO L74 IsIncluded]: Start isIncluded. First operand 145 states. Second operand 225 states. [2020-07-18 05:14:55,435 INFO L87 Difference]: Start difference. First operand 145 states. Second operand 225 states. [2020-07-18 05:14:55,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 05:14:55,443 INFO L93 Difference]: Finished difference Result 225 states and 239 transitions. [2020-07-18 05:14:55,443 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 239 transitions. [2020-07-18 05:14:55,444 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 05:14:55,444 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 05:14:55,444 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-18 05:14:55,444 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-18 05:14:55,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-07-18 05:14:55,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 157 transitions. [2020-07-18 05:14:55,449 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 157 transitions. Word has length 40 [2020-07-18 05:14:55,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-18 05:14:55,449 INFO L479 AbstractCegarLoop]: Abstraction has 145 states and 157 transitions. [2020-07-18 05:14:55,450 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-07-18 05:14:55,450 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 145 states and 157 transitions. [2020-07-18 05:14:55,848 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 157 edges. 157 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 05:14:55,849 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 157 transitions. [2020-07-18 05:14:55,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-07-18 05:14:55,849 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 05:14:55,850 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-18 05:14:55,850 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-18 05:14:55,850 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 05:14:55,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 05:14:55,851 INFO L82 PathProgramCache]: Analyzing trace with hash 1667005657, now seen corresponding path program 1 times [2020-07-18 05:14:55,851 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 05:14:55,851 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1425229458] [2020-07-18 05:14:55,852 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 05:14:55,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-18 05:14:55,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-18 05:14:55,930 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-18 05:14:55,930 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-18 05:14:55,931 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-18 05:14:55,984 WARN L170 areAnnotationChecker]: ULTIMATE.initENTRY has no Hoare annotation [2020-07-18 05:14:55,984 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-18 05:14:55,984 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-18 05:14:55,984 WARN L170 areAnnotationChecker]: mainENTRY has no Hoare annotation [2020-07-18 05:14:55,984 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-18 05:14:55,984 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-18 05:14:55,985 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-18 05:14:55,985 WARN L170 areAnnotationChecker]: L986 has no Hoare annotation [2020-07-18 05:14:55,985 WARN L170 areAnnotationChecker]: L-1-1 has no Hoare annotation [2020-07-18 05:14:55,985 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-18 05:14:55,985 WARN L170 areAnnotationChecker]: L987 has no Hoare annotation [2020-07-18 05:14:55,985 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2020-07-18 05:14:55,985 WARN L170 areAnnotationChecker]: L987-1 has no Hoare annotation [2020-07-18 05:14:55,985 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2020-07-18 05:14:55,985 WARN L170 areAnnotationChecker]: L988 has no Hoare annotation [2020-07-18 05:14:55,986 WARN L170 areAnnotationChecker]: L991 has no Hoare annotation [2020-07-18 05:14:55,986 WARN L170 areAnnotationChecker]: L1014-4 has no Hoare annotation [2020-07-18 05:14:55,986 WARN L170 areAnnotationChecker]: L1014-4 has no Hoare annotation [2020-07-18 05:14:55,986 WARN L170 areAnnotationChecker]: L994-5 has no Hoare annotation [2020-07-18 05:14:55,986 WARN L170 areAnnotationChecker]: L994-1 has no Hoare annotation [2020-07-18 05:14:55,986 WARN L170 areAnnotationChecker]: L994-1 has no Hoare annotation [2020-07-18 05:14:55,986 WARN L170 areAnnotationChecker]: L1016 has no Hoare annotation [2020-07-18 05:14:55,986 WARN L170 areAnnotationChecker]: L994-2 has no Hoare annotation [2020-07-18 05:14:55,986 WARN L170 areAnnotationChecker]: L994-4 has no Hoare annotation [2020-07-18 05:14:55,986 WARN L170 areAnnotationChecker]: L1018 has no Hoare annotation [2020-07-18 05:14:55,987 WARN L170 areAnnotationChecker]: L997 has no Hoare annotation [2020-07-18 05:14:55,987 WARN L170 areAnnotationChecker]: L1018-1 has no Hoare annotation [2020-07-18 05:14:55,987 WARN L170 areAnnotationChecker]: L997-1 has no Hoare annotation [2020-07-18 05:14:55,987 WARN L170 areAnnotationChecker]: L1019-4 has no Hoare annotation [2020-07-18 05:14:55,987 WARN L170 areAnnotationChecker]: L1019-4 has no Hoare annotation [2020-07-18 05:14:55,987 WARN L170 areAnnotationChecker]: L1019-4 has no Hoare annotation [2020-07-18 05:14:55,987 WARN L170 areAnnotationChecker]: L997-2 has no Hoare annotation [2020-07-18 05:14:55,987 WARN L170 areAnnotationChecker]: L1021-4 has no Hoare annotation [2020-07-18 05:14:55,987 WARN L170 areAnnotationChecker]: L1021-4 has no Hoare annotation [2020-07-18 05:14:55,987 WARN L170 areAnnotationChecker]: L1019-1 has no Hoare annotation [2020-07-18 05:14:55,988 WARN L170 areAnnotationChecker]: L1019-1 has no Hoare annotation [2020-07-18 05:14:55,988 WARN L170 areAnnotationChecker]: L1019-3 has no Hoare annotation [2020-07-18 05:14:55,988 WARN L170 areAnnotationChecker]: L1019-3 has no Hoare annotation [2020-07-18 05:14:55,988 WARN L170 areAnnotationChecker]: L998 has no Hoare annotation [2020-07-18 05:14:55,988 WARN L170 areAnnotationChecker]: L1021-5 has no Hoare annotation [2020-07-18 05:14:55,988 WARN L170 areAnnotationChecker]: L1021 has no Hoare annotation [2020-07-18 05:14:55,988 WARN L170 areAnnotationChecker]: L1021 has no Hoare annotation [2020-07-18 05:14:55,988 WARN L170 areAnnotationChecker]: L998-1 has no Hoare annotation [2020-07-18 05:14:55,988 WARN L170 areAnnotationChecker]: L1027 has no Hoare annotation [2020-07-18 05:14:55,988 WARN L170 areAnnotationChecker]: L1021-1 has no Hoare annotation [2020-07-18 05:14:55,989 WARN L170 areAnnotationChecker]: L1021-3 has no Hoare annotation [2020-07-18 05:14:55,989 WARN L170 areAnnotationChecker]: L999 has no Hoare annotation [2020-07-18 05:14:55,989 WARN L170 areAnnotationChecker]: L1027-1 has no Hoare annotation [2020-07-18 05:14:55,989 WARN L170 areAnnotationChecker]: L1023-25 has no Hoare annotation [2020-07-18 05:14:55,989 WARN L170 areAnnotationChecker]: L1023-25 has no Hoare annotation [2020-07-18 05:14:55,989 WARN L170 areAnnotationChecker]: L999-1 has no Hoare annotation [2020-07-18 05:14:55,989 WARN L170 areAnnotationChecker]: L1033-1 has no Hoare annotation [2020-07-18 05:14:55,989 WARN L170 areAnnotationChecker]: L1033-1 has no Hoare annotation [2020-07-18 05:14:55,989 WARN L170 areAnnotationChecker]: L1023-1 has no Hoare annotation [2020-07-18 05:14:55,989 WARN L170 areAnnotationChecker]: L1023-26 has no Hoare annotation [2020-07-18 05:14:55,990 WARN L170 areAnnotationChecker]: L999-2 has no Hoare annotation [2020-07-18 05:14:55,990 WARN L170 areAnnotationChecker]: L1029-5 has no Hoare annotation [2020-07-18 05:14:55,990 WARN L170 areAnnotationChecker]: L1029-1 has no Hoare annotation [2020-07-18 05:14:55,990 WARN L170 areAnnotationChecker]: L1029-1 has no Hoare annotation [2020-07-18 05:14:55,990 WARN L170 areAnnotationChecker]: L1023-2 has no Hoare annotation [2020-07-18 05:14:55,990 WARN L170 areAnnotationChecker]: L1024 has no Hoare annotation [2020-07-18 05:14:55,990 WARN L170 areAnnotationChecker]: L1000 has no Hoare annotation [2020-07-18 05:14:55,990 WARN L170 areAnnotationChecker]: L1035 has no Hoare annotation [2020-07-18 05:14:55,990 WARN L170 areAnnotationChecker]: L1029-2 has no Hoare annotation [2020-07-18 05:14:55,990 WARN L170 areAnnotationChecker]: L1029-4 has no Hoare annotation [2020-07-18 05:14:55,991 WARN L170 areAnnotationChecker]: L1023-3 has no Hoare annotation [2020-07-18 05:14:55,991 WARN L170 areAnnotationChecker]: L1023-3 has no Hoare annotation [2020-07-18 05:14:55,991 WARN L170 areAnnotationChecker]: L1024-1 has no Hoare annotation [2020-07-18 05:14:55,991 WARN L170 areAnnotationChecker]: L1000-1 has no Hoare annotation [2020-07-18 05:14:55,991 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2020-07-18 05:14:55,991 WARN L170 areAnnotationChecker]: L1031 has no Hoare annotation [2020-07-18 05:14:55,991 WARN L170 areAnnotationChecker]: L1023-4 has no Hoare annotation [2020-07-18 05:14:55,991 WARN L170 areAnnotationChecker]: L1023-9 has no Hoare annotation [2020-07-18 05:14:55,991 WARN L170 areAnnotationChecker]: L1023-9 has no Hoare annotation [2020-07-18 05:14:55,991 WARN L170 areAnnotationChecker]: L1002 has no Hoare annotation [2020-07-18 05:14:55,992 WARN L170 areAnnotationChecker]: L1002 has no Hoare annotation [2020-07-18 05:14:55,992 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2020-07-18 05:14:55,992 WARN L170 areAnnotationChecker]: L1032 has no Hoare annotation [2020-07-18 05:14:55,992 WARN L170 areAnnotationChecker]: L1023-5 has no Hoare annotation [2020-07-18 05:14:55,992 WARN L170 areAnnotationChecker]: L1023-10 has no Hoare annotation [2020-07-18 05:14:55,992 WARN L170 areAnnotationChecker]: L1023-18 has no Hoare annotation [2020-07-18 05:14:55,992 WARN L170 areAnnotationChecker]: L1002-1 has no Hoare annotation [2020-07-18 05:14:55,992 WARN L170 areAnnotationChecker]: L1002-2 has no Hoare annotation [2020-07-18 05:14:55,992 WARN L170 areAnnotationChecker]: L1032-1 has no Hoare annotation [2020-07-18 05:14:55,993 WARN L170 areAnnotationChecker]: L1023-6 has no Hoare annotation [2020-07-18 05:14:55,993 WARN L170 areAnnotationChecker]: L1023-11 has no Hoare annotation [2020-07-18 05:14:55,993 WARN L170 areAnnotationChecker]: L1023-19 has no Hoare annotation [2020-07-18 05:14:55,993 WARN L170 areAnnotationChecker]: L1004 has no Hoare annotation [2020-07-18 05:14:55,993 WARN L170 areAnnotationChecker]: L1004 has no Hoare annotation [2020-07-18 05:14:55,993 WARN L170 areAnnotationChecker]: L1002-3 has no Hoare annotation [2020-07-18 05:14:55,993 WARN L170 areAnnotationChecker]: L1032-2 has no Hoare annotation [2020-07-18 05:14:55,993 WARN L170 areAnnotationChecker]: L1023-7 has no Hoare annotation [2020-07-18 05:14:55,993 WARN L170 areAnnotationChecker]: L1023-12 has no Hoare annotation [2020-07-18 05:14:55,993 WARN L170 areAnnotationChecker]: L1023-20 has no Hoare annotation [2020-07-18 05:14:55,994 WARN L170 areAnnotationChecker]: L1005 has no Hoare annotation [2020-07-18 05:14:55,994 WARN L170 areAnnotationChecker]: L1006 has no Hoare annotation [2020-07-18 05:14:55,994 WARN L170 areAnnotationChecker]: L1006 has no Hoare annotation [2020-07-18 05:14:55,994 WARN L170 areAnnotationChecker]: L1014-3 has no Hoare annotation [2020-07-18 05:14:55,994 WARN L170 areAnnotationChecker]: L1014-3 has no Hoare annotation [2020-07-18 05:14:55,994 WARN L170 areAnnotationChecker]: L1014-3 has no Hoare annotation [2020-07-18 05:14:55,994 WARN L170 areAnnotationChecker]: L1033 has no Hoare annotation [2020-07-18 05:14:55,994 WARN L170 areAnnotationChecker]: L1023-13 has no Hoare annotation [2020-07-18 05:14:55,994 WARN L170 areAnnotationChecker]: L1023-21 has no Hoare annotation [2020-07-18 05:14:55,994 WARN L170 areAnnotationChecker]: L1007 has no Hoare annotation [2020-07-18 05:14:55,995 WARN L170 areAnnotationChecker]: L1014 has no Hoare annotation [2020-07-18 05:14:55,995 WARN L170 areAnnotationChecker]: L1014 has no Hoare annotation [2020-07-18 05:14:55,995 WARN L170 areAnnotationChecker]: L1014-2 has no Hoare annotation [2020-07-18 05:14:55,995 WARN L170 areAnnotationChecker]: L1014-2 has no Hoare annotation [2020-07-18 05:14:55,995 WARN L170 areAnnotationChecker]: L1023-14 has no Hoare annotation [2020-07-18 05:14:55,995 WARN L170 areAnnotationChecker]: L1023-22 has no Hoare annotation [2020-07-18 05:14:55,995 WARN L170 areAnnotationChecker]: L1023-15 has no Hoare annotation [2020-07-18 05:14:55,995 WARN L170 areAnnotationChecker]: L1023-23 has no Hoare annotation [2020-07-18 05:14:55,996 WARN L170 areAnnotationChecker]: L1023-16 has no Hoare annotation [2020-07-18 05:14:55,996 WARN L170 areAnnotationChecker]: L1023-16 has no Hoare annotation [2020-07-18 05:14:55,996 WARN L170 areAnnotationChecker]: L1023-24 has no Hoare annotation [2020-07-18 05:14:55,996 WARN L170 areAnnotationChecker]: L1023-24 has no Hoare annotation [2020-07-18 05:14:55,996 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-18 05:14:56,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.07 05:14:56 BoogieIcfgContainer [2020-07-18 05:14:56,000 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-18 05:14:56,003 INFO L168 Benchmark]: Toolchain (without parser) took 24814.77 ms. Allocated memory was 145.8 MB in the beginning and 423.1 MB in the end (delta: 277.3 MB). Free memory was 101.1 MB in the beginning and 131.6 MB in the end (delta: -30.5 MB). Peak memory consumption was 246.9 MB. Max. memory is 7.1 GB. [2020-07-18 05:14:56,004 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 145.8 MB. Free memory is still 120.7 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-18 05:14:56,005 INFO L168 Benchmark]: CACSL2BoogieTranslator took 732.75 ms. Allocated memory was 145.8 MB in the beginning and 203.9 MB in the end (delta: 58.2 MB). Free memory was 100.7 MB in the beginning and 169.2 MB in the end (delta: -68.5 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. [2020-07-18 05:14:56,006 INFO L168 Benchmark]: Boogie Preprocessor took 72.43 ms. Allocated memory is still 203.9 MB. Free memory was 169.2 MB in the beginning and 166.3 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. [2020-07-18 05:14:56,006 INFO L168 Benchmark]: RCFGBuilder took 862.39 ms. Allocated memory is still 203.9 MB. Free memory was 166.3 MB in the beginning and 102.1 MB in the end (delta: 64.2 MB). Peak memory consumption was 64.2 MB. Max. memory is 7.1 GB. [2020-07-18 05:14:56,007 INFO L168 Benchmark]: TraceAbstraction took 23139.52 ms. Allocated memory was 203.9 MB in the beginning and 423.1 MB in the end (delta: 219.2 MB). Free memory was 101.1 MB in the beginning and 131.6 MB in the end (delta: -30.4 MB). Peak memory consumption was 188.7 MB. Max. memory is 7.1 GB. [2020-07-18 05:14:56,010 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 145.8 MB. Free memory is still 120.7 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 732.75 ms. Allocated memory was 145.8 MB in the beginning and 203.9 MB in the end (delta: 58.2 MB). Free memory was 100.7 MB in the beginning and 169.2 MB in the end (delta: -68.5 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 72.43 ms. Allocated memory is still 203.9 MB. Free memory was 169.2 MB in the beginning and 166.3 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 862.39 ms. Allocated memory is still 203.9 MB. Free memory was 166.3 MB in the beginning and 102.1 MB in the end (delta: 64.2 MB). Peak memory consumption was 64.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 23139.52 ms. Allocated memory was 203.9 MB in the beginning and 423.1 MB in the end (delta: 219.2 MB). Free memory was 101.1 MB in the beginning and 131.6 MB in the end (delta: -30.4 MB). Peak memory consumption was 188.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1023]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L986] SLL* head = malloc(sizeof(SLL)); VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}] [L987] head->next = head VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}] [L988] head->data = 0 VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}] [L990] SLL* x = head; VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}] [L991] int state = 1; VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, state=1, x={-1:0}] [L994] COND FALSE !(__VERIFIER_nondet_int()) VAL [__VERIFIER_nondet_int()=0, head={-1:0}, malloc(sizeof(SLL))={-1:0}, state=1, x={-1:0}] [L1016] x->data = state VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, state=1, x={-1:0}] [L1018] EXPR head->next VAL [head={-1:0}, head->next={-1:0}, malloc(sizeof(SLL))={-1:0}, state=1, x={-1:0}] [L1018] x = head->next VAL [head={-1:0}, head->next={-1:0}, malloc(sizeof(SLL))={-1:0}, state=1, x={-1:0}] [L1019] COND FALSE !(!(((void*)0) != x)) VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, state=1, x={-1:0}] [L1021] EXPR x->data VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, state=1, x={-1:0}, x->data=1] [L1021] COND TRUE x->data != 0 VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, state=1, x={-1:0}, x->data=1] [L1023] EXPR x->next VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, state=1, x={-1:0}, x->next={-1:0}] [L1023] EXPR x->next->data VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, state=1, x={-1:0}, x->next={-1:0}, x->next->data=1] [L1023] EXPR x->next->data != 0 && x->data > x->next->data VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, state=1, x={-1:0}, x->next={-1:0}, x->next->data=1, x->next->data != 0 && x->data > x->next->data=1] [L1023] EXPR x->data VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, state=1, x={-1:0}, x->data=1, x->next={-1:0}, x->next->data=1, x->next->data != 0 && x->data > x->next->data=1] [L1023] EXPR x->next VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, state=1, x={-1:0}, x->data=1, x->next={-1:0}, x->next={-1:0}, x->next->data=1, x->next->data != 0 && x->data > x->next->data=1] [L1023] EXPR x->next->data VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, state=1, x={-1:0}, x->data=1, x->next={-1:0}, x->next={-1:0}, x->next->data=1, x->next->data=1, x->next->data != 0 && x->data > x->next->data=1] [L1023] EXPR x->next->data != 0 && x->data > x->next->data VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, state=1, x={-1:0}, x->data=1, x->next={-1:0}, x->next={-1:0}, x->next->data=1, x->next->data=1, x->next->data != 0 && x->data > x->next->data=0] [L1023] COND TRUE !(x->next->data != 0 && x->data > x->next->data) VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, state=1, x={-1:0}, x->data=1, x->next={-1:0}, x->next={-1:0}, x->next->data=1, x->next->data=1, x->next->data != 0 && x->data > x->next->data=0] [L1023] __VERIFIER_error() VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, state=1, x={-1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 96 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 23.0s, OverallIterations: 7, TraceHistogramMax: 2, AutomataDifference: 15.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 479 SDtfs, 1420 SDslu, 2124 SDs, 0 SdLazy, 1458 SolverSat, 102 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 114 GetRequests, 21 SyntacticMatches, 3 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 2.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=145occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.3s AutomataMinimizationTime, 6 MinimizatonAttempts, 256 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 227 NumberOfCodeBlocks, 227 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 180 ConstructedInterpolants, 0 QuantifiedInterpolants, 44598 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 0/2 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...