/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 -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/list-properties/list_flag-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-18 00:19:53,832 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-18 00:19:53,835 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-18 00:19:53,853 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-18 00:19:53,854 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-18 00:19:53,856 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-18 00:19:53,858 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-18 00:19:53,871 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-18 00:19:53,873 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-18 00:19:53,874 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-18 00:19:53,875 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-18 00:19:53,876 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-18 00:19:53,877 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-18 00:19:53,878 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-18 00:19:53,881 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-18 00:19:53,882 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-18 00:19:53,883 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-18 00:19:53,887 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-18 00:19:53,889 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-18 00:19:53,892 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-18 00:19:53,894 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-18 00:19:53,895 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-18 00:19:53,897 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-18 00:19:53,898 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-18 00:19:53,902 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-18 00:19:53,903 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-18 00:19:53,903 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-18 00:19:53,907 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-18 00:19:53,907 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-18 00:19:53,909 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-18 00:19:53,910 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-18 00:19:53,911 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-18 00:19:53,912 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-18 00:19:53,914 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-18 00:19:53,918 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-18 00:19:53,919 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-18 00:19:53,922 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-18 00:19:53,922 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-18 00:19:53,922 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-18 00:19:53,923 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-18 00:19:53,925 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-18 00:19:53,925 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 00:19:53,942 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-18 00:19:53,942 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-18 00:19:53,945 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-18 00:19:53,945 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-18 00:19:53,946 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-18 00:19:53,946 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-18 00:19:53,946 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-18 00:19:53,947 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-18 00:19:53,947 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-18 00:19:53,947 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-18 00:19:53,948 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-18 00:19:53,948 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-18 00:19:53,949 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-18 00:19:53,949 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-18 00:19:53,951 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-18 00:19:53,951 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-18 00:19:53,952 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-18 00:19:53,952 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-18 00:19:53,952 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-18 00:19:53,953 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-18 00:19:53,953 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-18 00:19:53,953 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-18 00:19:53,953 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-18 00:19:54,221 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-18 00:19:54,239 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-18 00:19:54,243 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-18 00:19:54,245 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-18 00:19:54,245 INFO L275 PluginConnector]: CDTParser initialized [2020-07-18 00:19:54,246 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/list_flag-1.i [2020-07-18 00:19:54,320 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e75138658/4225fbf4a59e4aef9b12db8e676fc81b/FLAG060fca369 [2020-07-18 00:19:54,846 INFO L306 CDTParser]: Found 1 translation units. [2020-07-18 00:19:54,846 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-properties/list_flag-1.i [2020-07-18 00:19:54,860 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e75138658/4225fbf4a59e4aef9b12db8e676fc81b/FLAG060fca369 [2020-07-18 00:19:55,153 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e75138658/4225fbf4a59e4aef9b12db8e676fc81b [2020-07-18 00:19:55,164 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-18 00:19:55,167 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-18 00:19:55,169 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-18 00:19:55,169 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-18 00:19:55,172 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-18 00:19:55,174 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.07 12:19:55" (1/1) ... [2020-07-18 00:19:55,177 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d1de9f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:19:55, skipping insertion in model container [2020-07-18 00:19:55,177 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.07 12:19:55" (1/1) ... [2020-07-18 00:19:55,185 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-18 00:19:55,241 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-18 00:19:55,739 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-18 00:19:55,759 INFO L203 MainTranslator]: Completed pre-run [2020-07-18 00:19:55,849 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-18 00:19:55,905 INFO L208 MainTranslator]: Completed translation [2020-07-18 00:19:55,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:19:55 WrapperNode [2020-07-18 00:19:55,906 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-18 00:19:55,907 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-18 00:19:55,907 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-18 00:19:55,907 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-18 00:19:55,921 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:19:55" (1/1) ... [2020-07-18 00:19:55,921 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:19:55" (1/1) ... [2020-07-18 00:19:55,937 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:19:55" (1/1) ... [2020-07-18 00:19:55,938 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:19:55" (1/1) ... [2020-07-18 00:19:55,960 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:19:55" (1/1) ... [2020-07-18 00:19:55,966 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:19:55" (1/1) ... [2020-07-18 00:19:55,969 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:19:55" (1/1) ... [2020-07-18 00:19:55,976 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-18 00:19:55,977 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-18 00:19:55,977 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-18 00:19:55,977 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-18 00:19:55,978 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:19:55" (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 00:19:56,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-18 00:19:56,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-18 00:19:56,038 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-07-18 00:19:56,039 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-07-18 00:19:56,039 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-07-18 00:19:56,039 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-07-18 00:19:56,039 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-07-18 00:19:56,039 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-07-18 00:19:56,039 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-18 00:19:56,040 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-18 00:19:56,040 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-18 00:19:56,040 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-18 00:19:56,040 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-18 00:19:56,040 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-18 00:19:56,041 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-18 00:19:56,041 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-18 00:19:56,041 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-18 00:19:56,041 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-18 00:19:56,041 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-18 00:19:56,042 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-18 00:19:56,042 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-18 00:19:56,042 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-18 00:19:56,042 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-18 00:19:56,042 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-18 00:19:56,042 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-18 00:19:56,043 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-18 00:19:56,043 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-18 00:19:56,043 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-07-18 00:19:56,043 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-07-18 00:19:56,043 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-07-18 00:19:56,043 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-07-18 00:19:56,044 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-07-18 00:19:56,044 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-18 00:19:56,044 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-18 00:19:56,044 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-18 00:19:56,044 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-18 00:19:56,044 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-18 00:19:56,044 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-18 00:19:56,045 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-18 00:19:56,045 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-18 00:19:56,045 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-18 00:19:56,045 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-18 00:19:56,045 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-18 00:19:56,045 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-18 00:19:56,046 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-18 00:19:56,046 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-18 00:19:56,046 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-18 00:19:56,046 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-18 00:19:56,046 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-18 00:19:56,046 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-18 00:19:56,047 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-18 00:19:56,047 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-18 00:19:56,047 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-18 00:19:56,047 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-18 00:19:56,047 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-18 00:19:56,047 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-18 00:19:56,047 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-18 00:19:56,048 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-18 00:19:56,048 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-18 00:19:56,048 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-18 00:19:56,048 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-18 00:19:56,048 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-18 00:19:56,048 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-18 00:19:56,049 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-18 00:19:56,049 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-18 00:19:56,049 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-18 00:19:56,049 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-18 00:19:56,049 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-18 00:19:56,049 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-18 00:19:56,050 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-18 00:19:56,050 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-18 00:19:56,050 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-18 00:19:56,050 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-18 00:19:56,050 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-07-18 00:19:56,050 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-18 00:19:56,051 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-18 00:19:56,051 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-07-18 00:19:56,051 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-18 00:19:56,051 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-18 00:19:56,051 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-07-18 00:19:56,052 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-18 00:19:56,052 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-18 00:19:56,052 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-18 00:19:56,052 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-18 00:19:56,052 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-18 00:19:56,052 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-18 00:19:56,052 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-18 00:19:56,053 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-18 00:19:56,053 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-18 00:19:56,053 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-18 00:19:56,053 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-18 00:19:56,053 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-18 00:19:56,053 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-18 00:19:56,054 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-18 00:19:56,054 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-18 00:19:56,054 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-18 00:19:56,054 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-18 00:19:56,054 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-18 00:19:56,054 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-18 00:19:56,054 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-18 00:19:56,055 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-18 00:19:56,055 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-18 00:19:56,055 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-18 00:19:56,055 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-18 00:19:56,055 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-18 00:19:56,055 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-18 00:19:56,056 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-18 00:19:56,056 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-18 00:19:56,056 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-18 00:19:56,056 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-18 00:19:56,056 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-18 00:19:56,056 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-18 00:19:56,057 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-18 00:19:56,057 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-18 00:19:56,057 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-18 00:19:56,057 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-18 00:19:56,057 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-18 00:19:56,057 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-18 00:19:56,058 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-07-18 00:19:56,058 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-18 00:19:56,058 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-18 00:19:56,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-18 00:19:56,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-18 00:19:56,058 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-18 00:19:56,059 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-18 00:19:56,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-18 00:19:56,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-18 00:19:56,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-18 00:19:56,462 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-07-18 00:19:56,729 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-18 00:19:56,729 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-07-18 00:19:56,733 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.07 12:19:56 BoogieIcfgContainer [2020-07-18 00:19:56,733 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-18 00:19:56,735 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-18 00:19:56,735 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-18 00:19:56,738 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-18 00:19:56,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.07 12:19:55" (1/3) ... [2020-07-18 00:19:56,740 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47f7385c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.07 12:19:56, skipping insertion in model container [2020-07-18 00:19:56,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:19:55" (2/3) ... [2020-07-18 00:19:56,740 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47f7385c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.07 12:19:56, skipping insertion in model container [2020-07-18 00:19:56,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.07 12:19:56" (3/3) ... [2020-07-18 00:19:56,743 INFO L109 eAbstractionObserver]: Analyzing ICFG list_flag-1.i [2020-07-18 00:19:56,754 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-18 00:19:56,763 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-18 00:19:56,778 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-18 00:19:56,802 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-18 00:19:56,802 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-18 00:19:56,802 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-18 00:19:56,803 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-18 00:19:56,803 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-18 00:19:56,803 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-18 00:19:56,804 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-18 00:19:56,804 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-18 00:19:56,820 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states. [2020-07-18 00:19:56,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-18 00:19:56,833 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 00:19:56,834 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-18 00:19:56,834 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 00:19:56,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 00:19:56,841 INFO L82 PathProgramCache]: Analyzing trace with hash -1409516089, now seen corresponding path program 1 times [2020-07-18 00:19:56,851 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 00:19:56,851 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [350139719] [2020-07-18 00:19:56,852 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 00:19:56,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:19:57,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:19:57,112 INFO L280 TraceCheckUtils]: 0: Hoare triple {72#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0; {65#true} is VALID [2020-07-18 00:19:57,113 INFO L280 TraceCheckUtils]: 1: Hoare triple {65#true} #valid := #valid[0 := 0]; {65#true} is VALID [2020-07-18 00:19:57,113 INFO L280 TraceCheckUtils]: 2: Hoare triple {65#true} assume 0 < #StackHeapBarrier; {65#true} is VALID [2020-07-18 00:19:57,114 INFO L280 TraceCheckUtils]: 3: Hoare triple {65#true} assume true; {65#true} is VALID [2020-07-18 00:19:57,129 INFO L275 TraceCheckUtils]: 4: Hoare quadruple {65#true} {65#true} #142#return; {65#true} is VALID [2020-07-18 00:19:57,133 INFO L263 TraceCheckUtils]: 0: Hoare triple {65#true} call ULTIMATE.init(); {72#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} is VALID [2020-07-18 00:19:57,134 INFO L280 TraceCheckUtils]: 1: Hoare triple {72#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0; {65#true} is VALID [2020-07-18 00:19:57,134 INFO L280 TraceCheckUtils]: 2: Hoare triple {65#true} #valid := #valid[0 := 0]; {65#true} is VALID [2020-07-18 00:19:57,135 INFO L280 TraceCheckUtils]: 3: Hoare triple {65#true} assume 0 < #StackHeapBarrier; {65#true} is VALID [2020-07-18 00:19:57,135 INFO L280 TraceCheckUtils]: 4: Hoare triple {65#true} assume true; {65#true} is VALID [2020-07-18 00:19:57,136 INFO L275 TraceCheckUtils]: 5: Hoare quadruple {65#true} {65#true} #142#return; {65#true} is VALID [2020-07-18 00:19:57,136 INFO L263 TraceCheckUtils]: 6: Hoare triple {65#true} call #t~ret12 := main(); {65#true} is VALID [2020-07-18 00:19:57,136 INFO L280 TraceCheckUtils]: 7: Hoare triple {65#true} assume -2147483648 <= #t~nondet2 && #t~nondet2 <= 2147483647; {65#true} is VALID [2020-07-18 00:19:57,137 INFO L280 TraceCheckUtils]: 8: Hoare triple {65#true} ~flag~0 := #t~nondet2; {65#true} is VALID [2020-07-18 00:19:57,137 INFO L280 TraceCheckUtils]: 9: Hoare triple {65#true} havoc #t~nondet2; {65#true} is VALID [2020-07-18 00:19:57,138 INFO L280 TraceCheckUtils]: 10: Hoare triple {65#true} havoc ~p~0.base, ~p~0.offset; {65#true} is VALID [2020-07-18 00:19:57,138 INFO L280 TraceCheckUtils]: 11: Hoare triple {65#true} havoc ~a~0.base, ~a~0.offset; {65#true} is VALID [2020-07-18 00:19:57,138 INFO L280 TraceCheckUtils]: 12: Hoare triple {65#true} havoc ~t~0.base, ~t~0.offset; {65#true} is VALID [2020-07-18 00:19:57,139 INFO L280 TraceCheckUtils]: 13: Hoare triple {65#true} SUMMARY for call #t~malloc3.base, #t~malloc3.offset := #Ultimate.allocOnHeap(8); srcloc: L523 {65#true} is VALID [2020-07-18 00:19:57,139 INFO L280 TraceCheckUtils]: 14: Hoare triple {65#true} ~a~0.base, ~a~0.offset := #t~malloc3.base, #t~malloc3.offset; {65#true} is VALID [2020-07-18 00:19:57,140 INFO L280 TraceCheckUtils]: 15: Hoare triple {65#true} assume !(~a~0.base == 0 && ~a~0.offset == 0); {65#true} is VALID [2020-07-18 00:19:57,140 INFO L280 TraceCheckUtils]: 16: Hoare triple {65#true} ~p~0.base, ~p~0.offset := ~a~0.base, ~a~0.offset; {65#true} is VALID [2020-07-18 00:19:57,141 INFO L280 TraceCheckUtils]: 17: Hoare triple {65#true} assume !true; {66#false} is VALID [2020-07-18 00:19:57,142 INFO L280 TraceCheckUtils]: 18: Hoare triple {66#false} SUMMARY for call write~int(3, ~p~0.base, ~p~0.offset, 4); srcloc: L526-6 {66#false} is VALID [2020-07-18 00:19:57,142 INFO L280 TraceCheckUtils]: 19: Hoare triple {66#false} ~p~0.base, ~p~0.offset := ~a~0.base, ~a~0.offset; {66#false} is VALID [2020-07-18 00:19:57,143 INFO L280 TraceCheckUtils]: 20: Hoare triple {66#false} assume 0 != ~flag~0; {66#false} is VALID [2020-07-18 00:19:57,143 INFO L280 TraceCheckUtils]: 21: Hoare triple {66#false} assume !true; {66#false} is VALID [2020-07-18 00:19:57,144 INFO L280 TraceCheckUtils]: 22: Hoare triple {66#false} SUMMARY for call #t~mem11 := read~int(~p~0.base, ~p~0.offset, 4); srcloc: L543-6 {66#false} is VALID [2020-07-18 00:19:57,144 INFO L280 TraceCheckUtils]: 23: Hoare triple {66#false} assume 3 != #t~mem11; {66#false} is VALID [2020-07-18 00:19:57,144 INFO L280 TraceCheckUtils]: 24: Hoare triple {66#false} havoc #t~mem11; {66#false} is VALID [2020-07-18 00:19:57,145 INFO L280 TraceCheckUtils]: 25: Hoare triple {66#false} assume !false; {66#false} is VALID [2020-07-18 00:19:57,148 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 00:19:57,151 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-18 00:19:57,154 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [350139719] [2020-07-18 00:19:57,156 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-18 00:19:57,156 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-18 00:19:57,157 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060461567] [2020-07-18 00:19:57,164 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-07-18 00:19:57,168 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-18 00:19:57,172 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states. [2020-07-18 00:19:57,225 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 26 edges. 26 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:19:57,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-18 00:19:57,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-18 00:19:57,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-18 00:19:57,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-18 00:19:57,239 INFO L87 Difference]: Start difference. First operand 62 states. Second operand 3 states. [2020-07-18 00:19:57,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:19:57,575 INFO L93 Difference]: Finished difference Result 89 states and 104 transitions. [2020-07-18 00:19:57,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-18 00:19:57,576 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-07-18 00:19:57,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-18 00:19:57,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-18 00:19:57,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 104 transitions. [2020-07-18 00:19:57,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-18 00:19:57,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 104 transitions. [2020-07-18 00:19:57,599 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states and 104 transitions. [2020-07-18 00:19:57,724 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 104 edges. 104 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:19:57,738 INFO L225 Difference]: With dead ends: 89 [2020-07-18 00:19:57,738 INFO L226 Difference]: Without dead ends: 53 [2020-07-18 00:19:57,743 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 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 00:19:57,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-07-18 00:19:57,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-07-18 00:19:57,823 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-18 00:19:57,824 INFO L82 GeneralOperation]: Start isEquivalent. First operand 53 states. Second operand 53 states. [2020-07-18 00:19:57,824 INFO L74 IsIncluded]: Start isIncluded. First operand 53 states. Second operand 53 states. [2020-07-18 00:19:57,825 INFO L87 Difference]: Start difference. First operand 53 states. Second operand 53 states. [2020-07-18 00:19:57,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:19:57,831 INFO L93 Difference]: Finished difference Result 53 states and 57 transitions. [2020-07-18 00:19:57,831 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2020-07-18 00:19:57,832 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 00:19:57,832 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 00:19:57,832 INFO L74 IsIncluded]: Start isIncluded. First operand 53 states. Second operand 53 states. [2020-07-18 00:19:57,833 INFO L87 Difference]: Start difference. First operand 53 states. Second operand 53 states. [2020-07-18 00:19:57,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:19:57,838 INFO L93 Difference]: Finished difference Result 53 states and 57 transitions. [2020-07-18 00:19:57,839 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2020-07-18 00:19:57,840 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 00:19:57,840 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 00:19:57,840 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-18 00:19:57,840 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-18 00:19:57,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-07-18 00:19:57,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2020-07-18 00:19:57,847 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 26 [2020-07-18 00:19:57,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-18 00:19:57,847 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2020-07-18 00:19:57,847 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-18 00:19:57,847 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 53 states and 57 transitions. [2020-07-18 00:19:57,917 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 57 edges. 57 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:19:57,917 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2020-07-18 00:19:57,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-18 00:19:57,919 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 00:19:57,919 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] [2020-07-18 00:19:57,920 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-18 00:19:57,920 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 00:19:57,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 00:19:57,921 INFO L82 PathProgramCache]: Analyzing trace with hash 1836407039, now seen corresponding path program 1 times [2020-07-18 00:19:57,921 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 00:19:57,921 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1153976390] [2020-07-18 00:19:57,921 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 00:19:57,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:19:58,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:19:58,130 INFO L280 TraceCheckUtils]: 0: Hoare triple {476#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0; {465#true} is VALID [2020-07-18 00:19:58,131 INFO L280 TraceCheckUtils]: 1: Hoare triple {465#true} #valid := #valid[0 := 0]; {465#true} is VALID [2020-07-18 00:19:58,132 INFO L280 TraceCheckUtils]: 2: Hoare triple {465#true} assume 0 < #StackHeapBarrier; {465#true} is VALID [2020-07-18 00:19:58,132 INFO L280 TraceCheckUtils]: 3: Hoare triple {465#true} assume true; {465#true} is VALID [2020-07-18 00:19:58,133 INFO L275 TraceCheckUtils]: 4: Hoare quadruple {465#true} {465#true} #142#return; {465#true} is VALID [2020-07-18 00:19:58,134 INFO L263 TraceCheckUtils]: 0: Hoare triple {465#true} call ULTIMATE.init(); {476#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} is VALID [2020-07-18 00:19:58,135 INFO L280 TraceCheckUtils]: 1: Hoare triple {476#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0; {465#true} is VALID [2020-07-18 00:19:58,135 INFO L280 TraceCheckUtils]: 2: Hoare triple {465#true} #valid := #valid[0 := 0]; {465#true} is VALID [2020-07-18 00:19:58,136 INFO L280 TraceCheckUtils]: 3: Hoare triple {465#true} assume 0 < #StackHeapBarrier; {465#true} is VALID [2020-07-18 00:19:58,136 INFO L280 TraceCheckUtils]: 4: Hoare triple {465#true} assume true; {465#true} is VALID [2020-07-18 00:19:58,136 INFO L275 TraceCheckUtils]: 5: Hoare quadruple {465#true} {465#true} #142#return; {465#true} is VALID [2020-07-18 00:19:58,137 INFO L263 TraceCheckUtils]: 6: Hoare triple {465#true} call #t~ret12 := main(); {465#true} is VALID [2020-07-18 00:19:58,137 INFO L280 TraceCheckUtils]: 7: Hoare triple {465#true} assume -2147483648 <= #t~nondet2 && #t~nondet2 <= 2147483647; {465#true} is VALID [2020-07-18 00:19:58,138 INFO L280 TraceCheckUtils]: 8: Hoare triple {465#true} ~flag~0 := #t~nondet2; {465#true} is VALID [2020-07-18 00:19:58,138 INFO L280 TraceCheckUtils]: 9: Hoare triple {465#true} havoc #t~nondet2; {465#true} is VALID [2020-07-18 00:19:58,143 INFO L280 TraceCheckUtils]: 10: Hoare triple {465#true} havoc ~p~0.base, ~p~0.offset; {465#true} is VALID [2020-07-18 00:19:58,143 INFO L280 TraceCheckUtils]: 11: Hoare triple {465#true} havoc ~a~0.base, ~a~0.offset; {465#true} is VALID [2020-07-18 00:19:58,144 INFO L280 TraceCheckUtils]: 12: Hoare triple {465#true} havoc ~t~0.base, ~t~0.offset; {465#true} is VALID [2020-07-18 00:19:58,144 INFO L280 TraceCheckUtils]: 13: Hoare triple {465#true} SUMMARY for call #t~malloc3.base, #t~malloc3.offset := #Ultimate.allocOnHeap(8); srcloc: L523 {465#true} is VALID [2020-07-18 00:19:58,146 INFO L280 TraceCheckUtils]: 14: Hoare triple {465#true} ~a~0.base, ~a~0.offset := #t~malloc3.base, #t~malloc3.offset; {465#true} is VALID [2020-07-18 00:19:58,146 INFO L280 TraceCheckUtils]: 15: Hoare triple {465#true} assume !(~a~0.base == 0 && ~a~0.offset == 0); {465#true} is VALID [2020-07-18 00:19:58,150 INFO L280 TraceCheckUtils]: 16: Hoare triple {465#true} ~p~0.base, ~p~0.offset := ~a~0.base, ~a~0.offset; {472#(and (= main_~a~0.base main_~p~0.base) (= main_~a~0.offset main_~p~0.offset))} is VALID [2020-07-18 00:19:58,152 INFO L280 TraceCheckUtils]: 17: Hoare triple {472#(and (= main_~a~0.base main_~p~0.base) (= main_~a~0.offset main_~p~0.offset))} assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647; {472#(and (= main_~a~0.base main_~p~0.base) (= main_~a~0.offset main_~p~0.offset))} is VALID [2020-07-18 00:19:58,153 INFO L280 TraceCheckUtils]: 18: Hoare triple {472#(and (= main_~a~0.base main_~p~0.base) (= main_~a~0.offset main_~p~0.offset))} assume !(0 != #t~nondet4); {472#(and (= main_~a~0.base main_~p~0.base) (= main_~a~0.offset main_~p~0.offset))} is VALID [2020-07-18 00:19:58,155 INFO L280 TraceCheckUtils]: 19: Hoare triple {472#(and (= main_~a~0.base main_~p~0.base) (= main_~a~0.offset main_~p~0.offset))} havoc #t~nondet4; {472#(and (= main_~a~0.base main_~p~0.base) (= main_~a~0.offset main_~p~0.offset))} is VALID [2020-07-18 00:19:58,156 INFO L280 TraceCheckUtils]: 20: Hoare triple {472#(and (= main_~a~0.base main_~p~0.base) (= main_~a~0.offset main_~p~0.offset))} SUMMARY for call write~int(3, ~p~0.base, ~p~0.offset, 4); srcloc: L526-6 {473#(= 3 (select (select |#memory_int| main_~a~0.base) main_~a~0.offset))} is VALID [2020-07-18 00:19:58,157 INFO L280 TraceCheckUtils]: 21: Hoare triple {473#(= 3 (select (select |#memory_int| main_~a~0.base) main_~a~0.offset))} ~p~0.base, ~p~0.offset := ~a~0.base, ~a~0.offset; {474#(= 3 (select (select |#memory_int| main_~p~0.base) main_~p~0.offset))} is VALID [2020-07-18 00:19:58,158 INFO L280 TraceCheckUtils]: 22: Hoare triple {474#(= 3 (select (select |#memory_int| main_~p~0.base) main_~p~0.offset))} assume 0 != ~flag~0; {474#(= 3 (select (select |#memory_int| main_~p~0.base) main_~p~0.offset))} is VALID [2020-07-18 00:19:58,159 INFO L280 TraceCheckUtils]: 23: Hoare triple {474#(= 3 (select (select |#memory_int| main_~p~0.base) main_~p~0.offset))} SUMMARY for call #t~mem7 := read~int(~p~0.base, ~p~0.offset, 4); srcloc: L540-5 {474#(= 3 (select (select |#memory_int| main_~p~0.base) main_~p~0.offset))} is VALID [2020-07-18 00:19:58,160 INFO L280 TraceCheckUtils]: 24: Hoare triple {474#(= 3 (select (select |#memory_int| main_~p~0.base) main_~p~0.offset))} assume !(2 == #t~mem7); {474#(= 3 (select (select |#memory_int| main_~p~0.base) main_~p~0.offset))} is VALID [2020-07-18 00:19:58,161 INFO L280 TraceCheckUtils]: 25: Hoare triple {474#(= 3 (select (select |#memory_int| main_~p~0.base) main_~p~0.offset))} havoc #t~mem7; {474#(= 3 (select (select |#memory_int| main_~p~0.base) main_~p~0.offset))} is VALID [2020-07-18 00:19:58,164 INFO L280 TraceCheckUtils]: 26: Hoare triple {474#(= 3 (select (select |#memory_int| main_~p~0.base) main_~p~0.offset))} SUMMARY for call #t~mem11 := read~int(~p~0.base, ~p~0.offset, 4); srcloc: L543-6 {475#(= |main_#t~mem11| 3)} is VALID [2020-07-18 00:19:58,165 INFO L280 TraceCheckUtils]: 27: Hoare triple {475#(= |main_#t~mem11| 3)} assume 3 != #t~mem11; {466#false} is VALID [2020-07-18 00:19:58,166 INFO L280 TraceCheckUtils]: 28: Hoare triple {466#false} havoc #t~mem11; {466#false} is VALID [2020-07-18 00:19:58,166 INFO L280 TraceCheckUtils]: 29: Hoare triple {466#false} assume !false; {466#false} is VALID [2020-07-18 00:19:58,169 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 00:19:58,170 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-18 00:19:58,170 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1153976390] [2020-07-18 00:19:58,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-18 00:19:58,171 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-18 00:19:58,171 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481424284] [2020-07-18 00:19:58,175 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2020-07-18 00:19:58,176 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-18 00:19:58,176 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 7 states. [2020-07-18 00:19:58,229 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 30 edges. 30 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:19:58,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-18 00:19:58,230 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-18 00:19:58,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-18 00:19:58,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-07-18 00:19:58,231 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand 7 states. [2020-07-18 00:19:59,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:19:59,119 INFO L93 Difference]: Finished difference Result 122 states and 132 transitions. [2020-07-18 00:19:59,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-18 00:19:59,119 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2020-07-18 00:19:59,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-18 00:19:59,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-07-18 00:19:59,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 132 transitions. [2020-07-18 00:19:59,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-07-18 00:19:59,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 132 transitions. [2020-07-18 00:19:59,129 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 8 states and 132 transitions. [2020-07-18 00:19:59,302 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 132 edges. 132 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:19:59,308 INFO L225 Difference]: With dead ends: 122 [2020-07-18 00:19:59,308 INFO L226 Difference]: Without dead ends: 115 [2020-07-18 00:19:59,310 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-07-18 00:19:59,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-07-18 00:19:59,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 63. [2020-07-18 00:19:59,374 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-18 00:19:59,374 INFO L82 GeneralOperation]: Start isEquivalent. First operand 115 states. Second operand 63 states. [2020-07-18 00:19:59,374 INFO L74 IsIncluded]: Start isIncluded. First operand 115 states. Second operand 63 states. [2020-07-18 00:19:59,374 INFO L87 Difference]: Start difference. First operand 115 states. Second operand 63 states. [2020-07-18 00:19:59,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:19:59,382 INFO L93 Difference]: Finished difference Result 115 states and 124 transitions. [2020-07-18 00:19:59,382 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 124 transitions. [2020-07-18 00:19:59,383 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 00:19:59,383 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 00:19:59,383 INFO L74 IsIncluded]: Start isIncluded. First operand 63 states. Second operand 115 states. [2020-07-18 00:19:59,384 INFO L87 Difference]: Start difference. First operand 63 states. Second operand 115 states. [2020-07-18 00:19:59,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:19:59,390 INFO L93 Difference]: Finished difference Result 115 states and 124 transitions. [2020-07-18 00:19:59,390 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 124 transitions. [2020-07-18 00:19:59,391 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 00:19:59,392 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 00:19:59,392 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-18 00:19:59,392 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-18 00:19:59,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-07-18 00:19:59,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 69 transitions. [2020-07-18 00:19:59,396 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 69 transitions. Word has length 30 [2020-07-18 00:19:59,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-18 00:19:59,396 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 69 transitions. [2020-07-18 00:19:59,396 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-18 00:19:59,396 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 63 states and 69 transitions. [2020-07-18 00:19:59,478 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 69 edges. 69 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:19:59,479 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 69 transitions. [2020-07-18 00:19:59,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-07-18 00:19:59,480 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 00:19:59,481 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] [2020-07-18 00:19:59,481 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-18 00:19:59,481 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 00:19:59,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 00:19:59,482 INFO L82 PathProgramCache]: Analyzing trace with hash 1477911671, now seen corresponding path program 1 times [2020-07-18 00:19:59,482 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 00:19:59,482 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1083786879] [2020-07-18 00:19:59,482 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 00:19:59,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:19:59,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:19:59,658 INFO L280 TraceCheckUtils]: 0: Hoare triple {1094#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0; {1083#true} is VALID [2020-07-18 00:19:59,658 INFO L280 TraceCheckUtils]: 1: Hoare triple {1083#true} #valid := #valid[0 := 0]; {1083#true} is VALID [2020-07-18 00:19:59,658 INFO L280 TraceCheckUtils]: 2: Hoare triple {1083#true} assume 0 < #StackHeapBarrier; {1083#true} is VALID [2020-07-18 00:19:59,659 INFO L280 TraceCheckUtils]: 3: Hoare triple {1083#true} assume true; {1083#true} is VALID [2020-07-18 00:19:59,659 INFO L275 TraceCheckUtils]: 4: Hoare quadruple {1083#true} {1083#true} #142#return; {1083#true} is VALID [2020-07-18 00:19:59,660 INFO L263 TraceCheckUtils]: 0: Hoare triple {1083#true} call ULTIMATE.init(); {1094#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} is VALID [2020-07-18 00:19:59,661 INFO L280 TraceCheckUtils]: 1: Hoare triple {1094#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0; {1083#true} is VALID [2020-07-18 00:19:59,661 INFO L280 TraceCheckUtils]: 2: Hoare triple {1083#true} #valid := #valid[0 := 0]; {1083#true} is VALID [2020-07-18 00:19:59,661 INFO L280 TraceCheckUtils]: 3: Hoare triple {1083#true} assume 0 < #StackHeapBarrier; {1083#true} is VALID [2020-07-18 00:19:59,661 INFO L280 TraceCheckUtils]: 4: Hoare triple {1083#true} assume true; {1083#true} is VALID [2020-07-18 00:19:59,662 INFO L275 TraceCheckUtils]: 5: Hoare quadruple {1083#true} {1083#true} #142#return; {1083#true} is VALID [2020-07-18 00:19:59,662 INFO L263 TraceCheckUtils]: 6: Hoare triple {1083#true} call #t~ret12 := main(); {1083#true} is VALID [2020-07-18 00:19:59,662 INFO L280 TraceCheckUtils]: 7: Hoare triple {1083#true} assume -2147483648 <= #t~nondet2 && #t~nondet2 <= 2147483647; {1083#true} is VALID [2020-07-18 00:19:59,662 INFO L280 TraceCheckUtils]: 8: Hoare triple {1083#true} ~flag~0 := #t~nondet2; {1083#true} is VALID [2020-07-18 00:19:59,662 INFO L280 TraceCheckUtils]: 9: Hoare triple {1083#true} havoc #t~nondet2; {1083#true} is VALID [2020-07-18 00:19:59,663 INFO L280 TraceCheckUtils]: 10: Hoare triple {1083#true} havoc ~p~0.base, ~p~0.offset; {1083#true} is VALID [2020-07-18 00:19:59,663 INFO L280 TraceCheckUtils]: 11: Hoare triple {1083#true} havoc ~a~0.base, ~a~0.offset; {1083#true} is VALID [2020-07-18 00:19:59,664 INFO L280 TraceCheckUtils]: 12: Hoare triple {1083#true} havoc ~t~0.base, ~t~0.offset; {1083#true} is VALID [2020-07-18 00:19:59,664 INFO L280 TraceCheckUtils]: 13: Hoare triple {1083#true} SUMMARY for call #t~malloc3.base, #t~malloc3.offset := #Ultimate.allocOnHeap(8); srcloc: L523 {1083#true} is VALID [2020-07-18 00:19:59,664 INFO L280 TraceCheckUtils]: 14: Hoare triple {1083#true} ~a~0.base, ~a~0.offset := #t~malloc3.base, #t~malloc3.offset; {1083#true} is VALID [2020-07-18 00:19:59,665 INFO L280 TraceCheckUtils]: 15: Hoare triple {1083#true} assume !(~a~0.base == 0 && ~a~0.offset == 0); {1083#true} is VALID [2020-07-18 00:19:59,666 INFO L280 TraceCheckUtils]: 16: Hoare triple {1083#true} ~p~0.base, ~p~0.offset := ~a~0.base, ~a~0.offset; {1090#(and (= main_~a~0.base main_~p~0.base) (= main_~a~0.offset main_~p~0.offset))} is VALID [2020-07-18 00:19:59,666 INFO L280 TraceCheckUtils]: 17: Hoare triple {1090#(and (= main_~a~0.base main_~p~0.base) (= main_~a~0.offset main_~p~0.offset))} assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647; {1090#(and (= main_~a~0.base main_~p~0.base) (= main_~a~0.offset main_~p~0.offset))} is VALID [2020-07-18 00:19:59,667 INFO L280 TraceCheckUtils]: 18: Hoare triple {1090#(and (= main_~a~0.base main_~p~0.base) (= main_~a~0.offset main_~p~0.offset))} assume !(0 != #t~nondet4); {1090#(and (= main_~a~0.base main_~p~0.base) (= main_~a~0.offset main_~p~0.offset))} is VALID [2020-07-18 00:19:59,667 INFO L280 TraceCheckUtils]: 19: Hoare triple {1090#(and (= main_~a~0.base main_~p~0.base) (= main_~a~0.offset main_~p~0.offset))} havoc #t~nondet4; {1090#(and (= main_~a~0.base main_~p~0.base) (= main_~a~0.offset main_~p~0.offset))} is VALID [2020-07-18 00:19:59,668 INFO L280 TraceCheckUtils]: 20: Hoare triple {1090#(and (= main_~a~0.base main_~p~0.base) (= main_~a~0.offset main_~p~0.offset))} SUMMARY for call write~int(3, ~p~0.base, ~p~0.offset, 4); srcloc: L526-6 {1091#(= 3 (select (select |#memory_int| main_~a~0.base) main_~a~0.offset))} is VALID [2020-07-18 00:19:59,669 INFO L280 TraceCheckUtils]: 21: Hoare triple {1091#(= 3 (select (select |#memory_int| main_~a~0.base) main_~a~0.offset))} ~p~0.base, ~p~0.offset := ~a~0.base, ~a~0.offset; {1092#(= 3 (select (select |#memory_int| main_~p~0.base) main_~p~0.offset))} is VALID [2020-07-18 00:19:59,670 INFO L280 TraceCheckUtils]: 22: Hoare triple {1092#(= 3 (select (select |#memory_int| main_~p~0.base) main_~p~0.offset))} assume 0 != ~flag~0; {1092#(= 3 (select (select |#memory_int| main_~p~0.base) main_~p~0.offset))} is VALID [2020-07-18 00:19:59,671 INFO L280 TraceCheckUtils]: 23: Hoare triple {1092#(= 3 (select (select |#memory_int| main_~p~0.base) main_~p~0.offset))} SUMMARY for call #t~mem7 := read~int(~p~0.base, ~p~0.offset, 4); srcloc: L540-5 {1093#(= 3 |main_#t~mem7|)} is VALID [2020-07-18 00:19:59,671 INFO L280 TraceCheckUtils]: 24: Hoare triple {1093#(= 3 |main_#t~mem7|)} assume !!(2 == #t~mem7); {1084#false} is VALID [2020-07-18 00:19:59,672 INFO L280 TraceCheckUtils]: 25: Hoare triple {1084#false} havoc #t~mem7; {1084#false} is VALID [2020-07-18 00:19:59,672 INFO L280 TraceCheckUtils]: 26: Hoare triple {1084#false} SUMMARY for call #t~mem8.base, #t~mem8.offset := read~$Pointer$(~p~0.base, 4 + ~p~0.offset, 4); srcloc: L541 {1084#false} is VALID [2020-07-18 00:19:59,672 INFO L280 TraceCheckUtils]: 27: Hoare triple {1084#false} ~p~0.base, ~p~0.offset := #t~mem8.base, #t~mem8.offset; {1084#false} is VALID [2020-07-18 00:19:59,673 INFO L280 TraceCheckUtils]: 28: Hoare triple {1084#false} havoc #t~mem8.base, #t~mem8.offset; {1084#false} is VALID [2020-07-18 00:19:59,673 INFO L280 TraceCheckUtils]: 29: Hoare triple {1084#false} SUMMARY for call #t~mem7 := read~int(~p~0.base, ~p~0.offset, 4); srcloc: L540-5 {1084#false} is VALID [2020-07-18 00:19:59,673 INFO L280 TraceCheckUtils]: 30: Hoare triple {1084#false} assume !(2 == #t~mem7); {1084#false} is VALID [2020-07-18 00:19:59,674 INFO L280 TraceCheckUtils]: 31: Hoare triple {1084#false} havoc #t~mem7; {1084#false} is VALID [2020-07-18 00:19:59,674 INFO L280 TraceCheckUtils]: 32: Hoare triple {1084#false} SUMMARY for call #t~mem11 := read~int(~p~0.base, ~p~0.offset, 4); srcloc: L543-6 {1084#false} is VALID [2020-07-18 00:19:59,674 INFO L280 TraceCheckUtils]: 33: Hoare triple {1084#false} assume 3 != #t~mem11; {1084#false} is VALID [2020-07-18 00:19:59,674 INFO L280 TraceCheckUtils]: 34: Hoare triple {1084#false} havoc #t~mem11; {1084#false} is VALID [2020-07-18 00:19:59,675 INFO L280 TraceCheckUtils]: 35: Hoare triple {1084#false} assume !false; {1084#false} is VALID [2020-07-18 00:19:59,677 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 00:19:59,680 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-18 00:19:59,680 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1083786879] [2020-07-18 00:19:59,681 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-18 00:19:59,681 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-18 00:19:59,681 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969342889] [2020-07-18 00:19:59,681 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-07-18 00:19:59,682 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-18 00:19:59,682 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 7 states. [2020-07-18 00:19:59,727 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 00:19:59,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-18 00:19:59,728 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-18 00:19:59,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-18 00:19:59,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-07-18 00:19:59,729 INFO L87 Difference]: Start difference. First operand 63 states and 69 transitions. Second operand 7 states. [2020-07-18 00:20:00,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:20:00,472 INFO L93 Difference]: Finished difference Result 117 states and 125 transitions. [2020-07-18 00:20:00,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-18 00:20:00,473 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-07-18 00:20:00,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-18 00:20:00,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-07-18 00:20:00,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 125 transitions. [2020-07-18 00:20:00,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-07-18 00:20:00,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 125 transitions. [2020-07-18 00:20:00,480 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 8 states and 125 transitions. [2020-07-18 00:20:00,604 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 125 edges. 125 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:20:00,608 INFO L225 Difference]: With dead ends: 117 [2020-07-18 00:20:00,608 INFO L226 Difference]: Without dead ends: 103 [2020-07-18 00:20:00,609 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-07-18 00:20:00,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-07-18 00:20:00,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 61. [2020-07-18 00:20:00,659 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-18 00:20:00,660 INFO L82 GeneralOperation]: Start isEquivalent. First operand 103 states. Second operand 61 states. [2020-07-18 00:20:00,660 INFO L74 IsIncluded]: Start isIncluded. First operand 103 states. Second operand 61 states. [2020-07-18 00:20:00,660 INFO L87 Difference]: Start difference. First operand 103 states. Second operand 61 states. [2020-07-18 00:20:00,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:20:00,665 INFO L93 Difference]: Finished difference Result 103 states and 110 transitions. [2020-07-18 00:20:00,665 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 110 transitions. [2020-07-18 00:20:00,666 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 00:20:00,666 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 00:20:00,666 INFO L74 IsIncluded]: Start isIncluded. First operand 61 states. Second operand 103 states. [2020-07-18 00:20:00,667 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 103 states. [2020-07-18 00:20:00,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:20:00,672 INFO L93 Difference]: Finished difference Result 103 states and 110 transitions. [2020-07-18 00:20:00,672 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 110 transitions. [2020-07-18 00:20:00,673 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 00:20:00,673 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 00:20:00,673 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-18 00:20:00,673 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-18 00:20:00,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-07-18 00:20:00,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 66 transitions. [2020-07-18 00:20:00,676 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 66 transitions. Word has length 36 [2020-07-18 00:20:00,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-18 00:20:00,676 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 66 transitions. [2020-07-18 00:20:00,677 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-18 00:20:00,677 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 61 states and 66 transitions. [2020-07-18 00:20:00,738 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 66 edges. 66 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:20:00,738 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 66 transitions. [2020-07-18 00:20:00,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-07-18 00:20:00,739 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 00:20:00,740 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] [2020-07-18 00:20:00,740 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-18 00:20:00,740 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 00:20:00,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 00:20:00,741 INFO L82 PathProgramCache]: Analyzing trace with hash -380981001, now seen corresponding path program 1 times [2020-07-18 00:20:00,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 00:20:00,741 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1458675904] [2020-07-18 00:20:00,741 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 00:20:00,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:20:00,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:20:00,879 INFO L280 TraceCheckUtils]: 0: Hoare triple {1674#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0; {1663#true} is VALID [2020-07-18 00:20:00,879 INFO L280 TraceCheckUtils]: 1: Hoare triple {1663#true} #valid := #valid[0 := 0]; {1663#true} is VALID [2020-07-18 00:20:00,880 INFO L280 TraceCheckUtils]: 2: Hoare triple {1663#true} assume 0 < #StackHeapBarrier; {1663#true} is VALID [2020-07-18 00:20:00,880 INFO L280 TraceCheckUtils]: 3: Hoare triple {1663#true} assume true; {1663#true} is VALID [2020-07-18 00:20:00,880 INFO L275 TraceCheckUtils]: 4: Hoare quadruple {1663#true} {1663#true} #142#return; {1663#true} is VALID [2020-07-18 00:20:00,882 INFO L263 TraceCheckUtils]: 0: Hoare triple {1663#true} call ULTIMATE.init(); {1674#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} is VALID [2020-07-18 00:20:00,882 INFO L280 TraceCheckUtils]: 1: Hoare triple {1674#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0; {1663#true} is VALID [2020-07-18 00:20:00,882 INFO L280 TraceCheckUtils]: 2: Hoare triple {1663#true} #valid := #valid[0 := 0]; {1663#true} is VALID [2020-07-18 00:20:00,883 INFO L280 TraceCheckUtils]: 3: Hoare triple {1663#true} assume 0 < #StackHeapBarrier; {1663#true} is VALID [2020-07-18 00:20:00,883 INFO L280 TraceCheckUtils]: 4: Hoare triple {1663#true} assume true; {1663#true} is VALID [2020-07-18 00:20:00,883 INFO L275 TraceCheckUtils]: 5: Hoare quadruple {1663#true} {1663#true} #142#return; {1663#true} is VALID [2020-07-18 00:20:00,883 INFO L263 TraceCheckUtils]: 6: Hoare triple {1663#true} call #t~ret12 := main(); {1663#true} is VALID [2020-07-18 00:20:00,884 INFO L280 TraceCheckUtils]: 7: Hoare triple {1663#true} assume -2147483648 <= #t~nondet2 && #t~nondet2 <= 2147483647; {1663#true} is VALID [2020-07-18 00:20:00,884 INFO L280 TraceCheckUtils]: 8: Hoare triple {1663#true} ~flag~0 := #t~nondet2; {1663#true} is VALID [2020-07-18 00:20:00,884 INFO L280 TraceCheckUtils]: 9: Hoare triple {1663#true} havoc #t~nondet2; {1663#true} is VALID [2020-07-18 00:20:00,885 INFO L280 TraceCheckUtils]: 10: Hoare triple {1663#true} havoc ~p~0.base, ~p~0.offset; {1663#true} is VALID [2020-07-18 00:20:00,885 INFO L280 TraceCheckUtils]: 11: Hoare triple {1663#true} havoc ~a~0.base, ~a~0.offset; {1663#true} is VALID [2020-07-18 00:20:00,885 INFO L280 TraceCheckUtils]: 12: Hoare triple {1663#true} havoc ~t~0.base, ~t~0.offset; {1663#true} is VALID [2020-07-18 00:20:00,885 INFO L280 TraceCheckUtils]: 13: Hoare triple {1663#true} SUMMARY for call #t~malloc3.base, #t~malloc3.offset := #Ultimate.allocOnHeap(8); srcloc: L523 {1663#true} is VALID [2020-07-18 00:20:00,886 INFO L280 TraceCheckUtils]: 14: Hoare triple {1663#true} ~a~0.base, ~a~0.offset := #t~malloc3.base, #t~malloc3.offset; {1663#true} is VALID [2020-07-18 00:20:00,886 INFO L280 TraceCheckUtils]: 15: Hoare triple {1663#true} assume !(~a~0.base == 0 && ~a~0.offset == 0); {1663#true} is VALID [2020-07-18 00:20:00,893 INFO L280 TraceCheckUtils]: 16: Hoare triple {1663#true} ~p~0.base, ~p~0.offset := ~a~0.base, ~a~0.offset; {1670#(and (= main_~a~0.base main_~p~0.base) (= main_~a~0.offset main_~p~0.offset))} is VALID [2020-07-18 00:20:00,900 INFO L280 TraceCheckUtils]: 17: Hoare triple {1670#(and (= main_~a~0.base main_~p~0.base) (= main_~a~0.offset main_~p~0.offset))} assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647; {1670#(and (= main_~a~0.base main_~p~0.base) (= main_~a~0.offset main_~p~0.offset))} is VALID [2020-07-18 00:20:00,901 INFO L280 TraceCheckUtils]: 18: Hoare triple {1670#(and (= main_~a~0.base main_~p~0.base) (= main_~a~0.offset main_~p~0.offset))} assume !(0 != #t~nondet4); {1670#(and (= main_~a~0.base main_~p~0.base) (= main_~a~0.offset main_~p~0.offset))} is VALID [2020-07-18 00:20:00,902 INFO L280 TraceCheckUtils]: 19: Hoare triple {1670#(and (= main_~a~0.base main_~p~0.base) (= main_~a~0.offset main_~p~0.offset))} havoc #t~nondet4; {1670#(and (= main_~a~0.base main_~p~0.base) (= main_~a~0.offset main_~p~0.offset))} is VALID [2020-07-18 00:20:00,903 INFO L280 TraceCheckUtils]: 20: Hoare triple {1670#(and (= main_~a~0.base main_~p~0.base) (= main_~a~0.offset main_~p~0.offset))} SUMMARY for call write~int(3, ~p~0.base, ~p~0.offset, 4); srcloc: L526-6 {1671#(= 3 (select (select |#memory_int| main_~a~0.base) main_~a~0.offset))} is VALID [2020-07-18 00:20:00,904 INFO L280 TraceCheckUtils]: 21: Hoare triple {1671#(= 3 (select (select |#memory_int| main_~a~0.base) main_~a~0.offset))} ~p~0.base, ~p~0.offset := ~a~0.base, ~a~0.offset; {1672#(= 3 (select (select |#memory_int| main_~p~0.base) main_~p~0.offset))} is VALID [2020-07-18 00:20:00,904 INFO L280 TraceCheckUtils]: 22: Hoare triple {1672#(= 3 (select (select |#memory_int| main_~p~0.base) main_~p~0.offset))} assume !(0 != ~flag~0); {1672#(= 3 (select (select |#memory_int| main_~p~0.base) main_~p~0.offset))} is VALID [2020-07-18 00:20:00,905 INFO L280 TraceCheckUtils]: 23: Hoare triple {1672#(= 3 (select (select |#memory_int| main_~p~0.base) main_~p~0.offset))} SUMMARY for call #t~mem9 := read~int(~p~0.base, ~p~0.offset, 4); srcloc: L543-5 {1673#(= 3 |main_#t~mem9|)} is VALID [2020-07-18 00:20:00,906 INFO L280 TraceCheckUtils]: 24: Hoare triple {1673#(= 3 |main_#t~mem9|)} assume !!(1 == #t~mem9); {1664#false} is VALID [2020-07-18 00:20:00,906 INFO L280 TraceCheckUtils]: 25: Hoare triple {1664#false} havoc #t~mem9; {1664#false} is VALID [2020-07-18 00:20:00,906 INFO L280 TraceCheckUtils]: 26: Hoare triple {1664#false} SUMMARY for call #t~mem10.base, #t~mem10.offset := read~$Pointer$(~p~0.base, 4 + ~p~0.offset, 4); srcloc: L544 {1664#false} is VALID [2020-07-18 00:20:00,907 INFO L280 TraceCheckUtils]: 27: Hoare triple {1664#false} ~p~0.base, ~p~0.offset := #t~mem10.base, #t~mem10.offset; {1664#false} is VALID [2020-07-18 00:20:00,907 INFO L280 TraceCheckUtils]: 28: Hoare triple {1664#false} havoc #t~mem10.base, #t~mem10.offset; {1664#false} is VALID [2020-07-18 00:20:00,907 INFO L280 TraceCheckUtils]: 29: Hoare triple {1664#false} SUMMARY for call #t~mem9 := read~int(~p~0.base, ~p~0.offset, 4); srcloc: L543-5 {1664#false} is VALID [2020-07-18 00:20:00,907 INFO L280 TraceCheckUtils]: 30: Hoare triple {1664#false} assume !(1 == #t~mem9); {1664#false} is VALID [2020-07-18 00:20:00,908 INFO L280 TraceCheckUtils]: 31: Hoare triple {1664#false} havoc #t~mem9; {1664#false} is VALID [2020-07-18 00:20:00,908 INFO L280 TraceCheckUtils]: 32: Hoare triple {1664#false} SUMMARY for call #t~mem11 := read~int(~p~0.base, ~p~0.offset, 4); srcloc: L543-6 {1664#false} is VALID [2020-07-18 00:20:00,908 INFO L280 TraceCheckUtils]: 33: Hoare triple {1664#false} assume 3 != #t~mem11; {1664#false} is VALID [2020-07-18 00:20:00,908 INFO L280 TraceCheckUtils]: 34: Hoare triple {1664#false} havoc #t~mem11; {1664#false} is VALID [2020-07-18 00:20:00,909 INFO L280 TraceCheckUtils]: 35: Hoare triple {1664#false} assume !false; {1664#false} is VALID [2020-07-18 00:20:00,911 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 00:20:00,916 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-18 00:20:00,916 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1458675904] [2020-07-18 00:20:00,916 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-18 00:20:00,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-18 00:20:00,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515041505] [2020-07-18 00:20:00,917 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-07-18 00:20:00,918 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-18 00:20:00,918 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 7 states. [2020-07-18 00:20:00,959 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 00:20:00,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-18 00:20:00,960 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-18 00:20:00,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-18 00:20:00,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-07-18 00:20:00,960 INFO L87 Difference]: Start difference. First operand 61 states and 66 transitions. Second operand 7 states. [2020-07-18 00:20:01,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:20:01,592 INFO L93 Difference]: Finished difference Result 100 states and 107 transitions. [2020-07-18 00:20:01,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-18 00:20:01,593 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-07-18 00:20:01,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-18 00:20:01,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-07-18 00:20:01,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 107 transitions. [2020-07-18 00:20:01,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-07-18 00:20:01,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 107 transitions. [2020-07-18 00:20:01,601 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 7 states and 107 transitions. [2020-07-18 00:20:01,719 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 107 edges. 107 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:20:01,722 INFO L225 Difference]: With dead ends: 100 [2020-07-18 00:20:01,722 INFO L226 Difference]: Without dead ends: 82 [2020-07-18 00:20:01,723 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-07-18 00:20:01,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-07-18 00:20:01,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 55. [2020-07-18 00:20:01,762 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-18 00:20:01,762 INFO L82 GeneralOperation]: Start isEquivalent. First operand 82 states. Second operand 55 states. [2020-07-18 00:20:01,762 INFO L74 IsIncluded]: Start isIncluded. First operand 82 states. Second operand 55 states. [2020-07-18 00:20:01,763 INFO L87 Difference]: Start difference. First operand 82 states. Second operand 55 states. [2020-07-18 00:20:01,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:20:01,767 INFO L93 Difference]: Finished difference Result 82 states and 88 transitions. [2020-07-18 00:20:01,768 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 88 transitions. [2020-07-18 00:20:01,768 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 00:20:01,768 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 00:20:01,768 INFO L74 IsIncluded]: Start isIncluded. First operand 55 states. Second operand 82 states. [2020-07-18 00:20:01,769 INFO L87 Difference]: Start difference. First operand 55 states. Second operand 82 states. [2020-07-18 00:20:01,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:20:01,774 INFO L93 Difference]: Finished difference Result 82 states and 88 transitions. [2020-07-18 00:20:01,774 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 88 transitions. [2020-07-18 00:20:01,774 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 00:20:01,775 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 00:20:01,775 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-18 00:20:01,775 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-18 00:20:01,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-07-18 00:20:01,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2020-07-18 00:20:01,778 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 36 [2020-07-18 00:20:01,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-18 00:20:01,778 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2020-07-18 00:20:01,778 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-18 00:20:01,778 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 55 states and 59 transitions. [2020-07-18 00:20:01,838 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 59 edges. 59 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:20:01,838 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2020-07-18 00:20:01,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-07-18 00:20:01,839 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 00:20:01,839 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-18 00:20:01,839 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-18 00:20:01,840 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 00:20:01,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 00:20:01,840 INFO L82 PathProgramCache]: Analyzing trace with hash -1659276919, now seen corresponding path program 1 times [2020-07-18 00:20:01,840 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 00:20:01,841 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [164605335] [2020-07-18 00:20:01,841 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 00:20:01,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-18 00:20:01,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-18 00:20:01,961 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-18 00:20:01,961 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-18 00:20:01,961 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-18 00:20:01,962 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-18 00:20:01,981 WARN L170 areAnnotationChecker]: ULTIMATE.initENTRY has no Hoare annotation [2020-07-18 00:20:01,982 WARN L170 areAnnotationChecker]: myexitENTRY has no Hoare annotation [2020-07-18 00:20:01,982 WARN L170 areAnnotationChecker]: __bswap_32ENTRY has no Hoare annotation [2020-07-18 00:20:01,982 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-18 00:20:01,982 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-18 00:20:01,982 WARN L170 areAnnotationChecker]: __bswap_64ENTRY has no Hoare annotation [2020-07-18 00:20:01,982 WARN L170 areAnnotationChecker]: __uint16_identityENTRY has no Hoare annotation [2020-07-18 00:20:01,983 WARN L170 areAnnotationChecker]: __uint64_identityENTRY has no Hoare annotation [2020-07-18 00:20:01,983 WARN L170 areAnnotationChecker]: mainENTRY has no Hoare annotation [2020-07-18 00:20:01,983 WARN L170 areAnnotationChecker]: __uint32_identityENTRY has no Hoare annotation [2020-07-18 00:20:01,983 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-18 00:20:01,983 WARN L170 areAnnotationChecker]: L514 has no Hoare annotation [2020-07-18 00:20:01,983 WARN L170 areAnnotationChecker]: L164 has no Hoare annotation [2020-07-18 00:20:01,983 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-18 00:20:01,983 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-18 00:20:01,983 WARN L170 areAnnotationChecker]: L169 has no Hoare annotation [2020-07-18 00:20:01,984 WARN L170 areAnnotationChecker]: L174 has no Hoare annotation [2020-07-18 00:20:01,984 WARN L170 areAnnotationChecker]: L184 has no Hoare annotation [2020-07-18 00:20:01,984 WARN L170 areAnnotationChecker]: L521 has no Hoare annotation [2020-07-18 00:20:01,984 WARN L170 areAnnotationChecker]: L179 has no Hoare annotation [2020-07-18 00:20:01,984 WARN L170 areAnnotationChecker]: L-1-1 has no Hoare annotation [2020-07-18 00:20:01,984 WARN L170 areAnnotationChecker]: L164-1 has no Hoare annotation [2020-07-18 00:20:01,984 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-18 00:20:01,984 WARN L170 areAnnotationChecker]: L169-1 has no Hoare annotation [2020-07-18 00:20:01,985 WARN L170 areAnnotationChecker]: __uint16_identityFINAL has no Hoare annotation [2020-07-18 00:20:01,985 WARN L170 areAnnotationChecker]: __uint64_identityFINAL has no Hoare annotation [2020-07-18 00:20:01,985 WARN L170 areAnnotationChecker]: L521-1 has no Hoare annotation [2020-07-18 00:20:01,985 WARN L170 areAnnotationChecker]: __uint32_identityFINAL has no Hoare annotation [2020-07-18 00:20:01,985 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2020-07-18 00:20:01,985 WARN L170 areAnnotationChecker]: __bswap_32FINAL has no Hoare annotation [2020-07-18 00:20:01,985 WARN L170 areAnnotationChecker]: __bswap_64FINAL has no Hoare annotation [2020-07-18 00:20:01,985 WARN L170 areAnnotationChecker]: L522 has no Hoare annotation [2020-07-18 00:20:01,985 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2020-07-18 00:20:01,986 WARN L170 areAnnotationChecker]: L522-1 has no Hoare annotation [2020-07-18 00:20:01,986 WARN L170 areAnnotationChecker]: L522-2 has no Hoare annotation [2020-07-18 00:20:01,986 WARN L170 areAnnotationChecker]: L523 has no Hoare annotation [2020-07-18 00:20:01,986 WARN L170 areAnnotationChecker]: L523-1 has no Hoare annotation [2020-07-18 00:20:01,986 WARN L170 areAnnotationChecker]: L524 has no Hoare annotation [2020-07-18 00:20:01,986 WARN L170 areAnnotationChecker]: L524 has no Hoare annotation [2020-07-18 00:20:01,986 WARN L170 areAnnotationChecker]: L524-1 has no Hoare annotation [2020-07-18 00:20:01,986 WARN L170 areAnnotationChecker]: L524-1 has no Hoare annotation [2020-07-18 00:20:01,986 WARN L170 areAnnotationChecker]: L524-3 has no Hoare annotation [2020-07-18 00:20:01,987 WARN L170 areAnnotationChecker]: L526-5 has no Hoare annotation [2020-07-18 00:20:01,987 WARN L170 areAnnotationChecker]: L526-5 has no Hoare annotation [2020-07-18 00:20:01,987 WARN L170 areAnnotationChecker]: L526-6 has no Hoare annotation [2020-07-18 00:20:01,987 WARN L170 areAnnotationChecker]: L526-1 has no Hoare annotation [2020-07-18 00:20:01,987 WARN L170 areAnnotationChecker]: L526-1 has no Hoare annotation [2020-07-18 00:20:01,987 WARN L170 areAnnotationChecker]: L537 has no Hoare annotation [2020-07-18 00:20:01,987 WARN L170 areAnnotationChecker]: L526-2 has no Hoare annotation [2020-07-18 00:20:01,987 WARN L170 areAnnotationChecker]: L526-4 has no Hoare annotation [2020-07-18 00:20:01,987 WARN L170 areAnnotationChecker]: L539 has no Hoare annotation [2020-07-18 00:20:01,987 WARN L170 areAnnotationChecker]: L539 has no Hoare annotation [2020-07-18 00:20:01,988 WARN L170 areAnnotationChecker]: L527 has no Hoare annotation [2020-07-18 00:20:01,988 WARN L170 areAnnotationChecker]: L527 has no Hoare annotation [2020-07-18 00:20:01,988 WARN L170 areAnnotationChecker]: L540-5 has no Hoare annotation [2020-07-18 00:20:01,988 WARN L170 areAnnotationChecker]: L540-5 has no Hoare annotation [2020-07-18 00:20:01,988 WARN L170 areAnnotationChecker]: L543-5 has no Hoare annotation [2020-07-18 00:20:01,988 WARN L170 areAnnotationChecker]: L543-5 has no Hoare annotation [2020-07-18 00:20:01,988 WARN L170 areAnnotationChecker]: L528 has no Hoare annotation [2020-07-18 00:20:01,988 WARN L170 areAnnotationChecker]: L530 has no Hoare annotation [2020-07-18 00:20:01,988 WARN L170 areAnnotationChecker]: L543-6 has no Hoare annotation [2020-07-18 00:20:01,988 WARN L170 areAnnotationChecker]: L540-1 has no Hoare annotation [2020-07-18 00:20:01,988 WARN L170 areAnnotationChecker]: L540-1 has no Hoare annotation [2020-07-18 00:20:01,989 WARN L170 areAnnotationChecker]: L543-1 has no Hoare annotation [2020-07-18 00:20:01,989 WARN L170 areAnnotationChecker]: L543-1 has no Hoare annotation [2020-07-18 00:20:01,989 WARN L170 areAnnotationChecker]: L530-1 has no Hoare annotation [2020-07-18 00:20:01,989 WARN L170 areAnnotationChecker]: L545 has no Hoare annotation [2020-07-18 00:20:01,989 WARN L170 areAnnotationChecker]: L545 has no Hoare annotation [2020-07-18 00:20:01,989 WARN L170 areAnnotationChecker]: L540-2 has no Hoare annotation [2020-07-18 00:20:01,989 WARN L170 areAnnotationChecker]: L540-4 has no Hoare annotation [2020-07-18 00:20:01,989 WARN L170 areAnnotationChecker]: L543-2 has no Hoare annotation [2020-07-18 00:20:01,989 WARN L170 areAnnotationChecker]: L543-4 has no Hoare annotation [2020-07-18 00:20:01,989 WARN L170 areAnnotationChecker]: L532 has no Hoare annotation [2020-07-18 00:20:01,989 WARN L170 areAnnotationChecker]: L545-1 has no Hoare annotation [2020-07-18 00:20:01,989 WARN L170 areAnnotationChecker]: L545-3 has no Hoare annotation [2020-07-18 00:20:01,989 WARN L170 areAnnotationChecker]: L541 has no Hoare annotation [2020-07-18 00:20:01,990 WARN L170 areAnnotationChecker]: L544 has no Hoare annotation [2020-07-18 00:20:01,990 WARN L170 areAnnotationChecker]: L533 has no Hoare annotation [2020-07-18 00:20:01,990 WARN L170 areAnnotationChecker]: L533 has no Hoare annotation [2020-07-18 00:20:01,990 WARN L170 areAnnotationChecker]: L546 has no Hoare annotation [2020-07-18 00:20:01,990 WARN L170 areAnnotationChecker]: L546 has no Hoare annotation [2020-07-18 00:20:01,990 WARN L170 areAnnotationChecker]: L545-4 has no Hoare annotation [2020-07-18 00:20:01,990 WARN L170 areAnnotationChecker]: L541-1 has no Hoare annotation [2020-07-18 00:20:01,990 WARN L170 areAnnotationChecker]: L544-1 has no Hoare annotation [2020-07-18 00:20:01,990 WARN L170 areAnnotationChecker]: L533-1 has no Hoare annotation [2020-07-18 00:20:01,991 WARN L170 areAnnotationChecker]: L533-1 has no Hoare annotation [2020-07-18 00:20:01,991 WARN L170 areAnnotationChecker]: L533-3 has no Hoare annotation [2020-07-18 00:20:01,991 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2020-07-18 00:20:01,991 WARN L170 areAnnotationChecker]: L541-2 has no Hoare annotation [2020-07-18 00:20:01,991 WARN L170 areAnnotationChecker]: L544-2 has no Hoare annotation [2020-07-18 00:20:01,991 WARN L170 areAnnotationChecker]: L534 has no Hoare annotation [2020-07-18 00:20:01,991 WARN L170 areAnnotationChecker]: L535 has no Hoare annotation [2020-07-18 00:20:01,991 WARN L170 areAnnotationChecker]: L535-1 has no Hoare annotation [2020-07-18 00:20:01,991 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 00:20:01,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.07 12:20:01 BoogieIcfgContainer [2020-07-18 00:20:01,995 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-18 00:20:01,998 INFO L168 Benchmark]: Toolchain (without parser) took 6831.94 ms. Allocated memory was 138.4 MB in the beginning and 286.3 MB in the end (delta: 147.8 MB). Free memory was 101.0 MB in the beginning and 132.8 MB in the end (delta: -31.7 MB). Peak memory consumption was 116.1 MB. Max. memory is 7.1 GB. [2020-07-18 00:20:01,999 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 138.4 MB. Free memory was 120.6 MB in the beginning and 120.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-18 00:20:02,000 INFO L168 Benchmark]: CACSL2BoogieTranslator took 738.07 ms. Allocated memory was 138.4 MB in the beginning and 203.9 MB in the end (delta: 65.5 MB). Free memory was 100.6 MB in the beginning and 169.9 MB in the end (delta: -69.2 MB). Peak memory consumption was 26.2 MB. Max. memory is 7.1 GB. [2020-07-18 00:20:02,001 INFO L168 Benchmark]: Boogie Preprocessor took 69.48 ms. Allocated memory is still 203.9 MB. Free memory was 169.9 MB in the beginning and 166.5 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. [2020-07-18 00:20:02,002 INFO L168 Benchmark]: RCFGBuilder took 756.65 ms. Allocated memory is still 203.9 MB. Free memory was 166.5 MB in the beginning and 108.6 MB in the end (delta: 57.9 MB). Peak memory consumption was 57.9 MB. Max. memory is 7.1 GB. [2020-07-18 00:20:02,003 INFO L168 Benchmark]: TraceAbstraction took 5260.30 ms. Allocated memory was 203.9 MB in the beginning and 286.3 MB in the end (delta: 82.3 MB). Free memory was 107.9 MB in the beginning and 132.8 MB in the end (delta: -24.8 MB). Peak memory consumption was 57.5 MB. Max. memory is 7.1 GB. [2020-07-18 00:20:02,006 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 0.16 ms. Allocated memory is still 138.4 MB. Free memory was 120.6 MB in the beginning and 120.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 738.07 ms. Allocated memory was 138.4 MB in the beginning and 203.9 MB in the end (delta: 65.5 MB). Free memory was 100.6 MB in the beginning and 169.9 MB in the end (delta: -69.2 MB). Peak memory consumption was 26.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 69.48 ms. Allocated memory is still 203.9 MB. Free memory was 169.9 MB in the beginning and 166.5 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 756.65 ms. Allocated memory is still 203.9 MB. Free memory was 166.5 MB in the beginning and 108.6 MB in the end (delta: 57.9 MB). Peak memory consumption was 57.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5260.30 ms. Allocated memory was 203.9 MB in the beginning and 286.3 MB in the end (delta: 82.3 MB). Free memory was 107.9 MB in the beginning and 132.8 MB in the end (delta: -24.8 MB). Peak memory consumption was 57.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 546]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L521] int flag = __VERIFIER_nondet_int(); [L522] List p, a, t; [L523] a = (List) malloc(sizeof(struct node)) [L524] COND FALSE !(a == 0) [L525] p = a [L526] COND TRUE __VERIFIER_nondet_int() [L527] COND TRUE \read(flag) [L528] p->h = 1 [L532] t = (List) malloc(sizeof(struct node)) [L533] COND FALSE !(t == 0) [L534] p->n = t [L535] EXPR p->n [L535] p = p->n [L526] COND FALSE !(__VERIFIER_nondet_int()) [L537] p->h = 3 [L538] p = a [L539] COND TRUE \read(flag) [L540] EXPR p->h [L540] COND FALSE !(p->h == 2) [L545] EXPR p->h [L545] COND TRUE p->h != 3 [L546] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.1s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 3.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 210 SDtfs, 217 SDslu, 451 SDs, 0 SdLazy, 504 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 66 GetRequests, 42 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=63occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 4 MinimizatonAttempts, 121 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...