java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/list-simple/dll2c_prepend_unequal.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:28:57,104 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:28:57,107 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:28:57,119 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 13:28:57,119 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 13:28:57,120 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 13:28:57,121 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 13:28:57,123 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 13:28:57,125 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 13:28:57,126 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 13:28:57,127 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 13:28:57,128 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 13:28:57,129 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:28:57,130 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:28:57,131 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:28:57,132 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:28:57,133 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:28:57,134 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:28:57,135 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:28:57,137 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:28:57,139 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:28:57,140 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:28:57,141 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:28:57,142 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:28:57,144 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-20 13:28:57,144 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-20 13:28:57,144 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-20 13:28:57,145 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-20 13:28:57,146 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-20 13:28:57,146 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-20 13:28:57,147 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-20 13:28:57,147 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-20 13:28:57,148 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-20 13:28:57,149 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-20 13:28:57,150 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-20 13:28:57,150 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-20 13:28:57,151 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-20 13:28:57,151 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-20 13:28:57,151 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:28:57,152 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:28:57,153 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:28:57,154 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-20 13:28:57,170 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:28:57,171 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:28:57,174 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-20 13:28:57,175 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-20 13:28:57,175 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-20 13:28:57,175 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-20 13:28:57,176 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-20 13:28:57,176 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-20 13:28:57,176 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-20 13:28:57,176 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-20 13:28:57,178 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:28:57,179 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:28:57,179 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:28:57,179 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:28:57,179 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:28:57,180 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:28:57,180 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:28:57,180 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:28:57,180 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:28:57,181 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:28:57,181 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:28:57,181 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-20 13:28:57,181 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:28:57,181 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:28:57,182 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:28:57,182 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:28:57,182 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-20 13:28:57,182 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:28:57,182 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:28:57,183 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-20 13:28:57,230 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:28:57,240 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:28:57,244 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:28:57,245 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:28:57,246 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:28:57,247 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/dll2c_prepend_unequal.i [2019-09-20 13:28:57,307 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec1e7963c/1bffba761fef4172a871a74b690f3c80/FLAGabf050073 [2019-09-20 13:28:57,866 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:28:57,866 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/dll2c_prepend_unequal.i [2019-09-20 13:28:57,880 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec1e7963c/1bffba761fef4172a871a74b690f3c80/FLAGabf050073 [2019-09-20 13:28:58,115 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec1e7963c/1bffba761fef4172a871a74b690f3c80 [2019-09-20 13:28:58,126 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:28:58,127 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:28:58,129 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:28:58,129 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:28:58,132 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:28:58,134 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:28:58" (1/1) ... [2019-09-20 13:28:58,137 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1adbfbad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:58, skipping insertion in model container [2019-09-20 13:28:58,137 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:28:58" (1/1) ... [2019-09-20 13:28:58,145 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:28:58,200 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:28:58,681 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:28:58,691 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:28:58,737 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:28:58,793 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:28:58,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:58 WrapperNode [2019-09-20 13:28:58,794 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:28:58,795 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:28:58,795 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:28:58,795 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:28:58,809 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:58" (1/1) ... [2019-09-20 13:28:58,810 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:58" (1/1) ... [2019-09-20 13:28:58,827 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:58" (1/1) ... [2019-09-20 13:28:58,828 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:58" (1/1) ... [2019-09-20 13:28:58,848 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:58" (1/1) ... [2019-09-20 13:28:58,854 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:58" (1/1) ... [2019-09-20 13:28:58,858 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:58" (1/1) ... [2019-09-20 13:28:58,865 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:28:58,866 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:28:58,866 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:28:58,866 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:28:58,867 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:58" (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 [2019-09-20 13:28:58,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:28:58,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:28:58,928 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-09-20 13:28:58,928 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-09-20 13:28:58,928 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-09-20 13:28:58,928 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-09-20 13:28:58,928 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_create [2019-09-20 13:28:58,929 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_destroy [2019-09-20 13:28:58,929 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_prepend [2019-09-20 13:28:58,929 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:28:58,930 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:28:58,930 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-09-20 13:28:58,930 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-09-20 13:28:58,931 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-09-20 13:28:58,932 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-09-20 13:28:58,932 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-09-20 13:28:58,933 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-09-20 13:28:58,933 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-09-20 13:28:58,933 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-09-20 13:28:58,933 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-09-20 13:28:58,934 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-09-20 13:28:58,934 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-09-20 13:28:58,934 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-09-20 13:28:58,934 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-09-20 13:28:58,934 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-09-20 13:28:58,936 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-09-20 13:28:58,936 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-09-20 13:28:58,937 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-09-20 13:28:58,937 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-09-20 13:28:58,938 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-09-20 13:28:58,938 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-09-20 13:28:58,938 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-09-20 13:28:58,938 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-09-20 13:28:58,938 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-09-20 13:28:58,938 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-09-20 13:28:58,938 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-09-20 13:28:58,939 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-09-20 13:28:58,939 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-09-20 13:28:58,939 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-09-20 13:28:58,939 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-09-20 13:28:58,939 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-09-20 13:28:58,940 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-09-20 13:28:58,940 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-09-20 13:28:58,940 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-09-20 13:28:58,940 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-09-20 13:28:58,940 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-09-20 13:28:58,940 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-09-20 13:28:58,940 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-09-20 13:28:58,941 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-09-20 13:28:58,941 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-09-20 13:28:58,941 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-09-20 13:28:58,941 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-09-20 13:28:58,941 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-09-20 13:28:58,941 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-09-20 13:28:58,942 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-09-20 13:28:58,942 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-09-20 13:28:58,942 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-09-20 13:28:58,942 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-09-20 13:28:58,942 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-09-20 13:28:58,943 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-09-20 13:28:58,943 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-09-20 13:28:58,943 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-09-20 13:28:58,943 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-09-20 13:28:58,944 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-20 13:28:58,944 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-09-20 13:28:58,944 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-09-20 13:28:58,944 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-20 13:28:58,945 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-09-20 13:28:58,945 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-09-20 13:28:58,945 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-09-20 13:28:58,946 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-09-20 13:28:58,946 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-09-20 13:28:58,946 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-09-20 13:28:58,947 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-09-20 13:28:58,947 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-09-20 13:28:58,947 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-09-20 13:28:58,947 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-20 13:28:58,947 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-09-20 13:28:58,948 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-09-20 13:28:58,948 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-09-20 13:28:58,948 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-09-20 13:28:58,949 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-09-20 13:28:58,949 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-09-20 13:28:58,949 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-09-20 13:28:58,949 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-09-20 13:28:58,950 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-09-20 13:28:58,950 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-09-20 13:28:58,951 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-09-20 13:28:58,951 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-09-20 13:28:58,951 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-09-20 13:28:58,951 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-09-20 13:28:58,951 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-09-20 13:28:58,951 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-09-20 13:28:58,952 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-09-20 13:28:58,952 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-09-20 13:28:58,952 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-09-20 13:28:58,952 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-09-20 13:28:58,952 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-09-20 13:28:58,952 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-09-20 13:28:58,952 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-09-20 13:28:58,953 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-09-20 13:28:58,953 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-09-20 13:28:58,953 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-09-20 13:28:58,953 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-09-20 13:28:58,953 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-09-20 13:28:58,953 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-09-20 13:28:58,953 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-09-20 13:28:58,954 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-09-20 13:28:58,954 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-09-20 13:28:58,954 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-09-20 13:28:58,954 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-09-20 13:28:58,954 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-09-20 13:28:58,954 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-09-20 13:28:58,954 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-09-20 13:28:58,955 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-09-20 13:28:58,955 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-09-20 13:28:58,955 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-09-20 13:28:58,955 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-09-20 13:28:58,956 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-20 13:28:58,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-20 13:28:58,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 13:28:58,957 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_create [2019-09-20 13:28:58,957 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_destroy [2019-09-20 13:28:58,957 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-20 13:28:58,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 13:28:58,957 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_prepend [2019-09-20 13:28:58,957 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:28:58,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-20 13:28:58,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-09-20 13:28:58,958 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 13:28:58,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:28:58,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:28:59,431 INFO L683 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-09-20 13:28:59,664 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:28:59,664 INFO L283 CfgBuilder]: Removed 3 assume(true) statements. [2019-09-20 13:28:59,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:28:59 BoogieIcfgContainer [2019-09-20 13:28:59,666 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:28:59,667 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:28:59,668 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:28:59,671 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:28:59,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:28:58" (1/3) ... [2019-09-20 13:28:59,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6199724b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:28:59, skipping insertion in model container [2019-09-20 13:28:59,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:58" (2/3) ... [2019-09-20 13:28:59,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6199724b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:28:59, skipping insertion in model container [2019-09-20 13:28:59,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:28:59" (3/3) ... [2019-09-20 13:28:59,675 INFO L109 eAbstractionObserver]: Analyzing ICFG dll2c_prepend_unequal.i [2019-09-20 13:28:59,685 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:28:59,692 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:28:59,709 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:28:59,731 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:28:59,731 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-20 13:28:59,732 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:28:59,732 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:28:59,732 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:28:59,732 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:28:59,732 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:28:59,733 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:28:59,749 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states. [2019-09-20 13:28:59,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-09-20 13:28:59,761 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:28:59,762 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:28:59,765 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:28:59,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:28:59,771 INFO L82 PathProgramCache]: Analyzing trace with hash 619880496, now seen corresponding path program 1 times [2019-09-20 13:28:59,773 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:28:59,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:28:59,840 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:28:59,840 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:28:59,840 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:28:59,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:29:00,050 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-09-20 13:29:00,053 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:29:00,054 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 13:29:00,055 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:29:00,063 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:29:00,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:29:00,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:29:00,089 INFO L87 Difference]: Start difference. First operand 55 states. Second operand 2 states. [2019-09-20 13:29:00,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:29:00,128 INFO L93 Difference]: Finished difference Result 55 states and 65 transitions. [2019-09-20 13:29:00,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:29:00,130 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 35 [2019-09-20 13:29:00,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:29:00,150 INFO L225 Difference]: With dead ends: 55 [2019-09-20 13:29:00,150 INFO L226 Difference]: Without dead ends: 40 [2019-09-20 13:29:00,154 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:29:00,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-09-20 13:29:00,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2019-09-20 13:29:00,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-09-20 13:29:00,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2019-09-20 13:29:00,227 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 35 [2019-09-20 13:29:00,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:29:00,230 INFO L475 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2019-09-20 13:29:00,230 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:29:00,230 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2019-09-20 13:29:00,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-09-20 13:29:00,235 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:29:00,236 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:29:00,236 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:29:00,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:29:00,238 INFO L82 PathProgramCache]: Analyzing trace with hash 1639628125, now seen corresponding path program 1 times [2019-09-20 13:29:00,238 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:29:00,265 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:00,266 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:29:00,266 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:00,266 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:29:00,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:29:00,497 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-09-20 13:29:00,497 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:29:00,498 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-20 13:29:00,498 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:29:00,500 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-20 13:29:00,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-20 13:29:00,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-20 13:29:00,502 INFO L87 Difference]: Start difference. First operand 40 states and 47 transitions. Second operand 5 states. [2019-09-20 13:29:00,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:29:00,567 INFO L93 Difference]: Finished difference Result 48 states and 57 transitions. [2019-09-20 13:29:00,567 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-20 13:29:00,567 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2019-09-20 13:29:00,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:29:00,569 INFO L225 Difference]: With dead ends: 48 [2019-09-20 13:29:00,569 INFO L226 Difference]: Without dead ends: 45 [2019-09-20 13:29:00,570 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:29:00,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-09-20 13:29:00,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 41. [2019-09-20 13:29:00,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2019-09-20 13:29:00,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2019-09-20 13:29:00,578 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 35 [2019-09-20 13:29:00,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:29:00,579 INFO L475 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2019-09-20 13:29:00,579 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-20 13:29:00,579 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2019-09-20 13:29:00,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-09-20 13:29:00,580 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:29:00,581 INFO L407 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:29:00,581 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:29:00,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:29:00,582 INFO L82 PathProgramCache]: Analyzing trace with hash 1024501097, now seen corresponding path program 1 times [2019-09-20 13:29:00,582 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:29:00,585 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:00,585 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:29:00,586 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:00,586 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:29:00,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:29:01,118 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-20 13:29:01,118 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:29:01,118 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-20 13:29:01,119 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 46 with the following transitions: [2019-09-20 13:29:01,122 INFO L207 CegarAbsIntRunner]: [0], [2], [9], [11], [13], [16], [20], [24], [25], [33], [39], [41], [42], [43], [44], [45], [47], [49], [52], [81], [110], [112], [115], [119], [120], [121], [122], [123], [126], [127], [128], [129], [132], [133], [134], [136], [137] [2019-09-20 13:29:01,186 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-20 13:29:01,187 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-20 13:29:01,272 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-20 13:29:01,274 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Performed 21 root evaluator evaluations with a maximum evaluation depth of 0. Performed 21 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 28 variables. [2019-09-20 13:29:01,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:29:01,279 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-20 13:29:01,344 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-09-20 13:29:01,344 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-20 13:29:01,349 INFO L420 sIntCurrentIteration]: We unified 44 AI predicates to 44 [2019-09-20 13:29:01,350 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-20 13:29:01,352 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-20 13:29:01,352 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [18] total 18 [2019-09-20 13:29:01,353 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:29:01,353 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:29:01,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:29:01,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:29:01,354 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand 2 states. [2019-09-20 13:29:01,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:29:01,358 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2019-09-20 13:29:01,358 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:29:01,360 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 45 [2019-09-20 13:29:01,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:29:01,361 INFO L225 Difference]: With dead ends: 6 [2019-09-20 13:29:01,361 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 13:29:01,364 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:29:01,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 13:29:01,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 13:29:01,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 13:29:01,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 13:29:01,366 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 45 [2019-09-20 13:29:01,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:29:01,366 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 13:29:01,366 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:29:01,369 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 13:29:01,370 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 13:29:01,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:29:01 BoogieIcfgContainer [2019-09-20 13:29:01,377 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-20 13:29:01,381 INFO L168 Benchmark]: Toolchain (without parser) took 3252.99 ms. Allocated memory was 140.5 MB in the beginning and 227.0 MB in the end (delta: 86.5 MB). Free memory was 86.7 MB in the beginning and 112.7 MB in the end (delta: -26.1 MB). Peak memory consumption was 60.5 MB. Max. memory is 7.1 GB. [2019-09-20 13:29:01,385 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 140.5 MB. Free memory was 106.5 MB in the beginning and 106.3 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-20 13:29:01,387 INFO L168 Benchmark]: CACSL2BoogieTranslator took 665.97 ms. Allocated memory was 140.5 MB in the beginning and 200.8 MB in the end (delta: 60.3 MB). Free memory was 86.5 MB in the beginning and 162.2 MB in the end (delta: -75.8 MB). Peak memory consumption was 20.7 MB. Max. memory is 7.1 GB. [2019-09-20 13:29:01,389 INFO L168 Benchmark]: Boogie Preprocessor took 70.59 ms. Allocated memory is still 200.8 MB. Free memory was 162.2 MB in the beginning and 158.7 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 7.1 GB. [2019-09-20 13:29:01,390 INFO L168 Benchmark]: RCFGBuilder took 800.31 ms. Allocated memory is still 200.8 MB. Free memory was 158.7 MB in the beginning and 106.0 MB in the end (delta: 52.7 MB). Peak memory consumption was 52.7 MB. Max. memory is 7.1 GB. [2019-09-20 13:29:01,391 INFO L168 Benchmark]: TraceAbstraction took 1709.62 ms. Allocated memory was 200.8 MB in the beginning and 227.0 MB in the end (delta: 26.2 MB). Free memory was 105.4 MB in the beginning and 112.7 MB in the end (delta: -7.3 MB). Peak memory consumption was 18.9 MB. Max. memory is 7.1 GB. [2019-09-20 13:29:01,402 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 140.5 MB. Free memory was 106.5 MB in the beginning and 106.3 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 665.97 ms. Allocated memory was 140.5 MB in the beginning and 200.8 MB in the end (delta: 60.3 MB). Free memory was 86.5 MB in the beginning and 162.2 MB in the end (delta: -75.8 MB). Peak memory consumption was 20.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 70.59 ms. Allocated memory is still 200.8 MB. Free memory was 162.2 MB in the beginning and 158.7 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 800.31 ms. Allocated memory is still 200.8 MB. Free memory was 158.7 MB in the beginning and 106.0 MB in the end (delta: 52.7 MB). Peak memory consumption was 52.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1709.62 ms. Allocated memory was 200.8 MB in the beginning and 227.0 MB in the end (delta: 26.2 MB). Free memory was 105.4 MB in the beginning and 112.7 MB in the end (delta: -7.3 MB). Peak memory consumption was 18.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 641]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 62 locations, 1 error locations. SAFE Result, 1.6s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 114 SDtfs, 19 SDslu, 110 SDs, 0 SdLazy, 19 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 52 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=55occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9772727272727273 AbsIntWeakeningRatio, 1.5681818181818181 AbsIntAvgWeakeningVarsNumRemoved, 0.13636363636363635 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 115 NumberOfCodeBlocks, 115 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 112 ConstructedInterpolants, 0 QuantifiedInterpolants, 13832 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 22/26 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...