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/dll2n_prepend_unequal.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-03 02:30:08,946 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-03 02:30:08,948 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-03 02:30:08,962 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-03 02:30:08,963 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-03 02:30:08,964 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-03 02:30:08,966 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-03 02:30:08,968 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-03 02:30:08,971 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-03 02:30:08,972 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-03 02:30:08,973 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-03 02:30:08,975 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-03 02:30:08,975 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-03 02:30:08,977 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-03 02:30:08,978 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-03 02:30:08,980 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-03 02:30:08,981 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-03 02:30:08,982 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-03 02:30:08,984 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-03 02:30:08,987 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-03 02:30:08,989 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-03 02:30:08,991 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-03 02:30:08,992 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-03 02:30:08,993 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-03 02:30:08,996 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-03 02:30:08,997 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-03 02:30:08,997 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-03 02:30:08,998 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-03 02:30:08,999 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-03 02:30:09,000 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-03 02:30:09,000 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-03 02:30:09,001 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-03 02:30:09,002 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-03 02:30:09,003 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-03 02:30:09,005 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-03 02:30:09,005 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-03 02:30:09,006 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-03 02:30:09,006 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-03 02:30:09,007 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-03 02:30:09,008 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-03 02:30:09,009 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-03 02:30:09,010 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 [2019-10-03 02:30:09,027 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-03 02:30:09,027 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-03 02:30:09,028 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-03 02:30:09,028 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-03 02:30:09,029 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-03 02:30:09,029 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-03 02:30:09,029 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-03 02:30:09,029 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-03 02:30:09,030 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-03 02:30:09,030 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-03 02:30:09,031 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-03 02:30:09,031 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-03 02:30:09,032 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-03 02:30:09,032 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-03 02:30:09,032 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-03 02:30:09,032 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-03 02:30:09,032 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-03 02:30:09,033 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-03 02:30:09,033 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-03 02:30:09,033 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-03 02:30:09,035 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-03 02:30:09,035 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-03 02:30:09,035 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-03 02:30:09,036 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-03 02:30:09,036 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-03 02:30:09,036 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-03 02:30:09,037 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-03 02:30:09,037 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-03 02:30:09,037 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-03 02:30:09,037 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-03 02:30:09,104 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-03 02:30:09,122 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-03 02:30:09,126 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-03 02:30:09,127 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-03 02:30:09,128 INFO L275 PluginConnector]: CDTParser initialized [2019-10-03 02:30:09,129 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/dll2n_prepend_unequal.i [2019-10-03 02:30:09,218 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de502d998/24fa9df0e2164632b060e03963089b0b/FLAG9309dfcd3 [2019-10-03 02:30:09,886 INFO L306 CDTParser]: Found 1 translation units. [2019-10-03 02:30:09,887 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/dll2n_prepend_unequal.i [2019-10-03 02:30:09,904 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de502d998/24fa9df0e2164632b060e03963089b0b/FLAG9309dfcd3 [2019-10-03 02:30:10,104 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de502d998/24fa9df0e2164632b060e03963089b0b [2019-10-03 02:30:10,118 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-03 02:30:10,119 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-03 02:30:10,121 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-03 02:30:10,121 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-03 02:30:10,125 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-03 02:30:10,127 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.10 02:30:10" (1/1) ... [2019-10-03 02:30:10,131 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51d07b8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:30:10, skipping insertion in model container [2019-10-03 02:30:10,131 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.10 02:30:10" (1/1) ... [2019-10-03 02:30:10,143 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-03 02:30:10,203 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-03 02:30:10,873 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-03 02:30:10,890 INFO L188 MainTranslator]: Completed pre-run [2019-10-03 02:30:10,975 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-03 02:30:11,036 INFO L192 MainTranslator]: Completed translation [2019-10-03 02:30:11,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:30:11 WrapperNode [2019-10-03 02:30:11,037 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-03 02:30:11,039 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-03 02:30:11,039 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-03 02:30:11,039 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-03 02:30:11,056 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:30:11" (1/1) ... [2019-10-03 02:30:11,058 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:30:11" (1/1) ... [2019-10-03 02:30:11,083 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:30:11" (1/1) ... [2019-10-03 02:30:11,083 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:30:11" (1/1) ... [2019-10-03 02:30:11,112 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:30:11" (1/1) ... [2019-10-03 02:30:11,127 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:30:11" (1/1) ... [2019-10-03 02:30:11,132 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:30:11" (1/1) ... [2019-10-03 02:30:11,139 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-03 02:30:11,140 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-03 02:30:11,140 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-03 02:30:11,141 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-03 02:30:11,142 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:30:11" (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 [2019-10-03 02:30:11,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-03 02:30:11,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-03 02:30:11,213 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-03 02:30:11,213 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-03 02:30:11,213 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-10-03 02:30:11,213 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-10-03 02:30:11,213 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create [2019-10-03 02:30:11,213 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy [2019-10-03 02:30:11,214 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_prepend [2019-10-03 02:30:11,214 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-03 02:30:11,214 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-03 02:30:11,214 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-03 02:30:11,214 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-03 02:30:11,215 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-03 02:30:11,215 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-03 02:30:11,215 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-03 02:30:11,215 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-03 02:30:11,215 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-03 02:30:11,216 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-03 02:30:11,216 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-03 02:30:11,217 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-03 02:30:11,217 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-03 02:30:11,217 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-03 02:30:11,218 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-03 02:30:11,219 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-03 02:30:11,219 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-03 02:30:11,219 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-03 02:30:11,221 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-03 02:30:11,221 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-03 02:30:11,222 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-03 02:30:11,222 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-03 02:30:11,223 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-03 02:30:11,223 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-03 02:30:11,223 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-03 02:30:11,223 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-03 02:30:11,223 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-03 02:30:11,223 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-03 02:30:11,224 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-03 02:30:11,224 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-03 02:30:11,225 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-03 02:30:11,225 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-03 02:30:11,225 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-03 02:30:11,225 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-03 02:30:11,225 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-03 02:30:11,225 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-03 02:30:11,225 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-03 02:30:11,226 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-03 02:30:11,226 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-03 02:30:11,226 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-03 02:30:11,227 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-03 02:30:11,227 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-03 02:30:11,227 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-03 02:30:11,227 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-03 02:30:11,227 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-03 02:30:11,227 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-03 02:30:11,227 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-03 02:30:11,227 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-03 02:30:11,228 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-03 02:30:11,228 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-03 02:30:11,228 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-03 02:30:11,228 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-03 02:30:11,228 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-03 02:30:11,228 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-03 02:30:11,228 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-03 02:30:11,229 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-03 02:30:11,229 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-03 02:30:11,229 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-03 02:30:11,229 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-10-03 02:30:11,229 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-03 02:30:11,229 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-03 02:30:11,229 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-03 02:30:11,230 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-03 02:30:11,230 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-03 02:30:11,230 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-03 02:30:11,230 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-03 02:30:11,230 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-03 02:30:11,230 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-03 02:30:11,231 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-03 02:30:11,231 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-03 02:30:11,231 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-03 02:30:11,231 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-03 02:30:11,231 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-03 02:30:11,231 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-03 02:30:11,232 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-03 02:30:11,232 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-03 02:30:11,232 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-03 02:30:11,232 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-03 02:30:11,232 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-03 02:30:11,232 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-03 02:30:11,232 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-03 02:30:11,233 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-03 02:30:11,233 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-03 02:30:11,233 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-03 02:30:11,233 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-03 02:30:11,233 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-03 02:30:11,233 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-03 02:30:11,234 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-03 02:30:11,234 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-03 02:30:11,234 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-03 02:30:11,234 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-03 02:30:11,234 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-03 02:30:11,234 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-03 02:30:11,234 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-03 02:30:11,234 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-03 02:30:11,235 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-03 02:30:11,235 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-03 02:30:11,235 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-03 02:30:11,235 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-03 02:30:11,235 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-03 02:30:11,235 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-03 02:30:11,235 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-03 02:30:11,235 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-03 02:30:11,236 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-03 02:30:11,236 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-03 02:30:11,236 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-03 02:30:11,236 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-03 02:30:11,236 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-10-03 02:30:11,236 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-10-03 02:30:11,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-03 02:30:11,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-03 02:30:11,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-03 02:30:11,237 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create [2019-10-03 02:30:11,237 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy [2019-10-03 02:30:11,237 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-03 02:30:11,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-03 02:30:11,238 INFO L130 BoogieDeclarations]: Found specification of procedure dll_prepend [2019-10-03 02:30:11,238 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-03 02:30:11,238 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-03 02:30:11,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-03 02:30:11,238 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-03 02:30:11,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-03 02:30:11,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-03 02:30:11,735 INFO L683 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-10-03 02:30:11,974 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-03 02:30:11,974 INFO L283 CfgBuilder]: Removed 3 assume(true) statements. [2019-10-03 02:30:11,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 02:30:11 BoogieIcfgContainer [2019-10-03 02:30:11,976 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-03 02:30:11,978 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-03 02:30:11,978 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-03 02:30:11,982 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-03 02:30:11,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.10 02:30:10" (1/3) ... [2019-10-03 02:30:11,984 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b7c9d12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 02:30:11, skipping insertion in model container [2019-10-03 02:30:11,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:30:11" (2/3) ... [2019-10-03 02:30:11,984 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b7c9d12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 02:30:11, skipping insertion in model container [2019-10-03 02:30:11,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 02:30:11" (3/3) ... [2019-10-03 02:30:11,987 INFO L109 eAbstractionObserver]: Analyzing ICFG dll2n_prepend_unequal.i [2019-10-03 02:30:11,998 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-03 02:30:12,007 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-03 02:30:12,027 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-03 02:30:12,057 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-03 02:30:12,057 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-03 02:30:12,058 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-03 02:30:12,058 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-03 02:30:12,058 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-03 02:30:12,058 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-03 02:30:12,058 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-03 02:30:12,059 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-03 02:30:12,078 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2019-10-03 02:30:12,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-10-03 02:30:12,091 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:30:12,093 INFO L411 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] [2019-10-03 02:30:12,096 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:30:12,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:30:12,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1640491568, now seen corresponding path program 1 times [2019-10-03 02:30:12,105 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:30:12,174 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:30:12,175 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:30:12,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:30:12,175 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:30:12,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:30:12,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 02:30:12,327 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 02:30:12,328 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-03 02:30:12,328 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:30:12,336 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-03 02:30:12,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-03 02:30:12,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-03 02:30:12,359 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 2 states. [2019-10-03 02:30:12,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:30:12,386 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2019-10-03 02:30:12,387 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-03 02:30:12,388 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 29 [2019-10-03 02:30:12,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:30:12,399 INFO L225 Difference]: With dead ends: 51 [2019-10-03 02:30:12,400 INFO L226 Difference]: Without dead ends: 37 [2019-10-03 02:30:12,402 INFO L640 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 [2019-10-03 02:30:12,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-10-03 02:30:12,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2019-10-03 02:30:12,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-10-03 02:30:12,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2019-10-03 02:30:12,453 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 29 [2019-10-03 02:30:12,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:30:12,453 INFO L475 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2019-10-03 02:30:12,454 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-03 02:30:12,454 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2019-10-03 02:30:12,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-10-03 02:30:12,455 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:30:12,456 INFO L411 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] [2019-10-03 02:30:12,456 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:30:12,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:30:12,457 INFO L82 PathProgramCache]: Analyzing trace with hash -1361191619, now seen corresponding path program 1 times [2019-10-03 02:30:12,457 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:30:12,463 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:30:12,463 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:30:12,463 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:30:12,464 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:30:12,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:30:12,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 02:30:12,668 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 02:30:12,668 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-03 02:30:12,668 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:30:12,670 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-03 02:30:12,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-03 02:30:12,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-03 02:30:12,672 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand 5 states. [2019-10-03 02:30:12,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:30:12,784 INFO L93 Difference]: Finished difference Result 45 states and 51 transitions. [2019-10-03 02:30:12,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-03 02:30:12,786 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2019-10-03 02:30:12,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:30:12,787 INFO L225 Difference]: With dead ends: 45 [2019-10-03 02:30:12,788 INFO L226 Difference]: Without dead ends: 42 [2019-10-03 02:30:12,789 INFO L640 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 [2019-10-03 02:30:12,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-10-03 02:30:12,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 38. [2019-10-03 02:30:12,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2019-10-03 02:30:12,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2019-10-03 02:30:12,796 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 29 [2019-10-03 02:30:12,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:30:12,797 INFO L475 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2019-10-03 02:30:12,797 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-03 02:30:12,797 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2019-10-03 02:30:12,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-10-03 02:30:12,798 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:30:12,799 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 02:30:12,799 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:30:12,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:30:12,799 INFO L82 PathProgramCache]: Analyzing trace with hash -417804790, now seen corresponding path program 1 times [2019-10-03 02:30:12,799 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:30:12,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:30:12,804 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:30:12,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:30:12,805 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:30:12,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:30:12,894 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 02:30:12,895 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 02:30:12,896 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-03 02:30:12,896 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:30:12,897 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-03 02:30:12,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-03 02:30:12,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-03 02:30:12,898 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand 3 states. [2019-10-03 02:30:12,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:30:12,940 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2019-10-03 02:30:12,941 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-03 02:30:12,942 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2019-10-03 02:30:12,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:30:12,943 INFO L225 Difference]: With dead ends: 42 [2019-10-03 02:30:12,943 INFO L226 Difference]: Without dead ends: 42 [2019-10-03 02:30:12,944 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-03 02:30:12,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-10-03 02:30:12,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2019-10-03 02:30:12,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2019-10-03 02:30:12,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2019-10-03 02:30:12,960 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 34 [2019-10-03 02:30:12,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:30:12,962 INFO L475 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2019-10-03 02:30:12,964 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-03 02:30:12,964 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2019-10-03 02:30:12,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-10-03 02:30:12,971 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:30:12,971 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 02:30:12,971 INFO L418 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:30:12,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:30:12,972 INFO L82 PathProgramCache]: Analyzing trace with hash 2071724172, now seen corresponding path program 1 times [2019-10-03 02:30:12,972 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:30:12,983 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:30:12,983 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:30:12,983 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:30:12,983 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:30:13,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:30:13,148 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 02:30:13,149 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-03 02:30:13,149 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-03 02:30:13,150 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 35 with the following transitions: [2019-10-03 02:30:13,153 INFO L207 CegarAbsIntRunner]: [21], [27], [29], [30], [31], [32], [33], [35], [37], [40], [67], [72], [79], [81], [87], [89], [94], [96], [100], [101], [102], [104], [107], [111], [112], [118], [119], [120], [121], [126], [127], [128], [129], [130] [2019-10-03 02:30:13,212 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-03 02:30:13,212 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-03 02:30:13,288 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-03 02:30:13,290 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. [2019-10-03 02:30:13,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:30:13,295 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-03 02:30:13,343 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-10-03 02:30:13,343 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-10-03 02:30:13,345 INFO L420 sIntCurrentIteration]: We unified 33 AI predicates to 33 [2019-10-03 02:30:13,345 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-03 02:30:13,346 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-03 02:30:13,346 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 6 [2019-10-03 02:30:13,347 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:30:13,347 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-03 02:30:13,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-03 02:30:13,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-03 02:30:13,348 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand 2 states. [2019-10-03 02:30:13,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:30:13,349 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2019-10-03 02:30:13,349 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-03 02:30:13,349 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 34 [2019-10-03 02:30:13,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:30:13,350 INFO L225 Difference]: With dead ends: 6 [2019-10-03 02:30:13,350 INFO L226 Difference]: Without dead ends: 0 [2019-10-03 02:30:13,351 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-03 02:30:13,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-03 02:30:13,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-03 02:30:13,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-03 02:30:13,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-03 02:30:13,352 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 34 [2019-10-03 02:30:13,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:30:13,352 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-03 02:30:13,352 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-03 02:30:13,352 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-03 02:30:13,352 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-03 02:30:13,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.10 02:30:13 BoogieIcfgContainer [2019-10-03 02:30:13,359 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-03 02:30:13,363 INFO L168 Benchmark]: Toolchain (without parser) took 3242.01 ms. Allocated memory was 131.1 MB in the beginning and 220.2 MB in the end (delta: 89.1 MB). Free memory was 85.6 MB in the beginning and 150.9 MB in the end (delta: -65.3 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. [2019-10-03 02:30:13,364 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 131.1 MB. Free memory was 105.3 MB in the beginning and 105.1 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2019-10-03 02:30:13,365 INFO L168 Benchmark]: CACSL2BoogieTranslator took 917.57 ms. Allocated memory was 131.1 MB in the beginning and 199.8 MB in the end (delta: 68.7 MB). Free memory was 85.4 MB in the beginning and 161.7 MB in the end (delta: -76.3 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. [2019-10-03 02:30:13,366 INFO L168 Benchmark]: Boogie Preprocessor took 101.10 ms. Allocated memory is still 199.8 MB. Free memory was 161.7 MB in the beginning and 158.5 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. [2019-10-03 02:30:13,367 INFO L168 Benchmark]: RCFGBuilder took 836.35 ms. Allocated memory is still 199.8 MB. Free memory was 158.5 MB in the beginning and 108.5 MB in the end (delta: 50.0 MB). Peak memory consumption was 50.0 MB. Max. memory is 7.1 GB. [2019-10-03 02:30:13,368 INFO L168 Benchmark]: TraceAbstraction took 1381.57 ms. Allocated memory was 199.8 MB in the beginning and 220.2 MB in the end (delta: 20.4 MB). Free memory was 108.5 MB in the beginning and 150.9 MB in the end (delta: -42.4 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-10-03 02:30:13,373 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 131.1 MB. Free memory was 105.3 MB in the beginning and 105.1 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 917.57 ms. Allocated memory was 131.1 MB in the beginning and 199.8 MB in the end (delta: 68.7 MB). Free memory was 85.4 MB in the beginning and 161.7 MB in the end (delta: -76.3 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 101.10 ms. Allocated memory is still 199.8 MB. Free memory was 161.7 MB in the beginning and 158.5 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 836.35 ms. Allocated memory is still 199.8 MB. Free memory was 158.5 MB in the beginning and 108.5 MB in the end (delta: 50.0 MB). Peak memory consumption was 50.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1381.57 ms. Allocated memory was 199.8 MB in the beginning and 220.2 MB in the end (delta: 20.4 MB). Free memory was 108.5 MB in the beginning and 150.9 MB in the end (delta: -42.4 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 632]: 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, 58 locations, 1 error locations. SAFE Result, 1.3s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 142 SDtfs, 19 SDslu, 135 SDs, 0 SdLazy, 23 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51occurred 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, 0.9696969696969697 AbsIntWeakeningRatio, 1.606060606060606 AbsIntAvgWeakeningVarsNumRemoved, 0.18181818181818182 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 126 NumberOfCodeBlocks, 126 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 122 ConstructedInterpolants, 0 QuantifiedInterpolants, 5544 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 1/2 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...