/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/list-simple/dll2n_remove_all.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 13:30:12,001 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 13:30:12,004 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 13:30:12,020 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 13:30:12,021 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 13:30:12,023 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 13:30:12,025 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 13:30:12,034 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 13:30:12,038 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 13:30:12,039 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 13:30:12,039 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 13:30:12,042 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 13:30:12,042 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 13:30:12,043 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 13:30:12,046 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 13:30:12,048 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 13:30:12,050 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 13:30:12,053 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 13:30:12,056 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 13:30:12,062 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 13:30:12,064 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 13:30:12,068 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 13:30:12,069 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 13:30:12,071 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 13:30:12,074 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-17 13:30:12,074 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-17 13:30:12,074 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-17 13:30:12,077 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-17 13:30:12,077 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-17 13:30:12,078 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-17 13:30:12,079 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-17 13:30:12,080 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-17 13:30:12,081 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-17 13:30:12,082 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-17 13:30:12,085 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-17 13:30:12,085 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-17 13:30:12,086 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-17 13:30:12,086 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-17 13:30:12,086 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 13:30:12,087 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 13:30:12,088 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 13:30:12,089 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-17 13:30:12,103 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 13:30:12,104 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 13:30:12,106 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 13:30:12,106 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 13:30:12,107 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 13:30:12,107 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 13:30:12,107 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 13:30:12,107 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 13:30:12,108 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 13:30:12,108 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 13:30:12,109 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 13:30:12,109 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 13:30:12,109 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 13:30:12,109 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 13:30:12,110 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 13:30:12,110 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-17 13:30:12,110 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 13:30:12,110 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 13:30:12,111 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 13:30:12,111 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 13:30:12,111 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-17 13:30:12,111 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 13:30:12,111 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-17 13:30:12,401 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 13:30:12,415 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 13:30:12,418 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 13:30:12,420 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 13:30:12,420 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 13:30:12,421 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/dll2n_remove_all.i [2020-07-17 13:30:12,484 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96f791017/7f8b79a06d6f4f6892e517541a53ae0e/FLAG9fa75c450 [2020-07-17 13:30:12,998 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 13:30:12,998 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/dll2n_remove_all.i [2020-07-17 13:30:13,012 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96f791017/7f8b79a06d6f4f6892e517541a53ae0e/FLAG9fa75c450 [2020-07-17 13:30:13,353 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96f791017/7f8b79a06d6f4f6892e517541a53ae0e [2020-07-17 13:30:13,363 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 13:30:13,366 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 13:30:13,367 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 13:30:13,367 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 13:30:13,371 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 13:30:13,372 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 01:30:13" (1/1) ... [2020-07-17 13:30:13,376 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dc76a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:30:13, skipping insertion in model container [2020-07-17 13:30:13,376 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 01:30:13" (1/1) ... [2020-07-17 13:30:13,384 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 13:30:13,440 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 13:30:13,862 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 13:30:13,871 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 13:30:13,921 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 13:30:13,980 INFO L208 MainTranslator]: Completed translation [2020-07-17 13:30:13,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:30:13 WrapperNode [2020-07-17 13:30:13,981 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 13:30:13,982 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 13:30:13,982 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 13:30:13,982 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 13:30:13,997 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:30:13" (1/1) ... [2020-07-17 13:30:13,997 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:30:13" (1/1) ... [2020-07-17 13:30:14,014 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:30:13" (1/1) ... [2020-07-17 13:30:14,015 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:30:13" (1/1) ... [2020-07-17 13:30:14,032 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:30:13" (1/1) ... [2020-07-17 13:30:14,037 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:30:13" (1/1) ... [2020-07-17 13:30:14,041 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:30:13" (1/1) ... [2020-07-17 13:30:14,049 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 13:30:14,049 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 13:30:14,050 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 13:30:14,050 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 13:30:14,051 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:30:13" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 13:30:14,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 13:30:14,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 13:30:14,127 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-07-17 13:30:14,127 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-07-17 13:30:14,127 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-07-17 13:30:14,127 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2020-07-17 13:30:14,127 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create [2020-07-17 13:30:14,127 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_remove_first [2020-07-17 13:30:14,128 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 13:30:14,128 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 13:30:14,128 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-07-17 13:30:14,129 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-07-17 13:30:14,129 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-17 13:30:14,129 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-17 13:30:14,130 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-17 13:30:14,130 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-17 13:30:14,130 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-17 13:30:14,130 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-17 13:30:14,131 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-17 13:30:14,131 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-17 13:30:14,132 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-17 13:30:14,132 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-17 13:30:14,134 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-17 13:30:14,135 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-17 13:30:14,135 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-17 13:30:14,135 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-17 13:30:14,135 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-17 13:30:14,135 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-17 13:30:14,135 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-17 13:30:14,136 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-17 13:30:14,136 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-17 13:30:14,136 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-17 13:30:14,136 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-17 13:30:14,136 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-17 13:30:14,137 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-17 13:30:14,137 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-17 13:30:14,137 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-17 13:30:14,137 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-17 13:30:14,137 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-17 13:30:14,137 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-17 13:30:14,138 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-17 13:30:14,138 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-17 13:30:14,138 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-17 13:30:14,138 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-17 13:30:14,138 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-17 13:30:14,138 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-17 13:30:14,138 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-17 13:30:14,139 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-17 13:30:14,139 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-17 13:30:14,139 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-17 13:30:14,139 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-17 13:30:14,139 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-17 13:30:14,140 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-17 13:30:14,140 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-17 13:30:14,140 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-17 13:30:14,140 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-17 13:30:14,140 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-17 13:30:14,140 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-17 13:30:14,141 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-17 13:30:14,141 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-17 13:30:14,141 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-17 13:30:14,141 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-17 13:30:14,141 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-17 13:30:14,141 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-17 13:30:14,142 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-17 13:30:14,142 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-17 13:30:14,142 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-17 13:30:14,142 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-17 13:30:14,142 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-17 13:30:14,142 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-17 13:30:14,142 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-07-17 13:30:14,143 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-17 13:30:14,143 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-17 13:30:14,143 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-07-17 13:30:14,144 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-17 13:30:14,144 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-17 13:30:14,144 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-07-17 13:30:14,145 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-17 13:30:14,145 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-17 13:30:14,145 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-17 13:30:14,146 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-17 13:30:14,147 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-17 13:30:14,147 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-17 13:30:14,147 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-17 13:30:14,147 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-17 13:30:14,147 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-17 13:30:14,147 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-17 13:30:14,148 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-17 13:30:14,148 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-17 13:30:14,148 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-17 13:30:14,149 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-17 13:30:14,149 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-17 13:30:14,149 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-17 13:30:14,149 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-17 13:30:14,149 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-17 13:30:14,149 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-17 13:30:14,149 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-17 13:30:14,150 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-17 13:30:14,150 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-17 13:30:14,151 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-17 13:30:14,151 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-17 13:30:14,151 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-17 13:30:14,151 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-17 13:30:14,151 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-17 13:30:14,151 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-17 13:30:14,151 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-17 13:30:14,152 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-17 13:30:14,152 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-17 13:30:14,152 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-17 13:30:14,152 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-17 13:30:14,152 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-17 13:30:14,152 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-17 13:30:14,152 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-17 13:30:14,153 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-17 13:30:14,153 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-17 13:30:14,153 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-07-17 13:30:14,153 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2020-07-17 13:30:14,153 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-17 13:30:14,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-17 13:30:14,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-17 13:30:14,154 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create [2020-07-17 13:30:14,154 INFO L130 BoogieDeclarations]: Found specification of procedure dll_remove_first [2020-07-17 13:30:14,154 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-17 13:30:14,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-17 13:30:14,155 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 13:30:14,155 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-17 13:30:14,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-07-17 13:30:14,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 13:30:14,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 13:30:14,156 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-17 13:30:14,496 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-07-17 13:30:14,725 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 13:30:14,726 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-07-17 13:30:14,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 01:30:14 BoogieIcfgContainer [2020-07-17 13:30:14,730 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 13:30:14,731 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 13:30:14,731 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 13:30:14,735 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 13:30:14,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 01:30:13" (1/3) ... [2020-07-17 13:30:14,736 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e0008f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 01:30:14, skipping insertion in model container [2020-07-17 13:30:14,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:30:13" (2/3) ... [2020-07-17 13:30:14,737 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e0008f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 01:30:14, skipping insertion in model container [2020-07-17 13:30:14,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 01:30:14" (3/3) ... [2020-07-17 13:30:14,739 INFO L109 eAbstractionObserver]: Analyzing ICFG dll2n_remove_all.i [2020-07-17 13:30:14,750 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-17 13:30:14,759 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 13:30:14,774 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 13:30:14,799 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 13:30:14,799 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 13:30:14,799 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-17 13:30:14,800 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 13:30:14,800 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 13:30:14,800 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 13:30:14,800 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 13:30:14,801 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 13:30:14,817 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states. [2020-07-17 13:30:14,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-17 13:30:14,829 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:30:14,830 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:30:14,831 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:30:14,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:30:14,838 INFO L82 PathProgramCache]: Analyzing trace with hash -1728925643, now seen corresponding path program 1 times [2020-07-17 13:30:14,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:30:14,849 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1348956492] [2020-07-17 13:30:14,849 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:30:14,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:15,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:15,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:15,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 13:30:15,144 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:30:15,146 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1348956492] [2020-07-17 13:30:15,148 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:30:15,149 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-17 13:30:15,149 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496121780] [2020-07-17 13:30:15,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-17 13:30:15,159 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:30:15,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-17 13:30:15,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 13:30:15,182 INFO L87 Difference]: Start difference. First operand 72 states. Second operand 4 states. [2020-07-17 13:30:15,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:30:15,445 INFO L93 Difference]: Finished difference Result 118 states and 130 transitions. [2020-07-17 13:30:15,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-17 13:30:15,447 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-07-17 13:30:15,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:30:15,461 INFO L225 Difference]: With dead ends: 118 [2020-07-17 13:30:15,462 INFO L226 Difference]: Without dead ends: 65 [2020-07-17 13:30:15,466 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-17 13:30:15,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-07-17 13:30:15,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 58. [2020-07-17 13:30:15,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-07-17 13:30:15,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 61 transitions. [2020-07-17 13:30:15,519 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 61 transitions. Word has length 27 [2020-07-17 13:30:15,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:30:15,520 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 61 transitions. [2020-07-17 13:30:15,520 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-17 13:30:15,520 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 61 transitions. [2020-07-17 13:30:15,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-17 13:30:15,522 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:30:15,522 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:30:15,522 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 13:30:15,523 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:30:15,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:30:15,523 INFO L82 PathProgramCache]: Analyzing trace with hash -1737237332, now seen corresponding path program 1 times [2020-07-17 13:30:15,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:30:15,524 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [25493978] [2020-07-17 13:30:15,524 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:30:15,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:15,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:15,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:15,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 13:30:15,709 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:30:15,709 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [25493978] [2020-07-17 13:30:15,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:30:15,710 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-17 13:30:15,710 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945004306] [2020-07-17 13:30:15,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-17 13:30:15,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:30:15,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-17 13:30:15,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-17 13:30:15,712 INFO L87 Difference]: Start difference. First operand 58 states and 61 transitions. Second operand 6 states. [2020-07-17 13:30:16,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:30:16,009 INFO L93 Difference]: Finished difference Result 74 states and 79 transitions. [2020-07-17 13:30:16,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-17 13:30:16,012 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-07-17 13:30:16,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:30:16,014 INFO L225 Difference]: With dead ends: 74 [2020-07-17 13:30:16,017 INFO L226 Difference]: Without dead ends: 69 [2020-07-17 13:30:16,019 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-07-17 13:30:16,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-07-17 13:30:16,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 59. [2020-07-17 13:30:16,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-07-17 13:30:16,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 62 transitions. [2020-07-17 13:30:16,047 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 62 transitions. Word has length 27 [2020-07-17 13:30:16,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:30:16,047 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 62 transitions. [2020-07-17 13:30:16,048 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-17 13:30:16,048 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 62 transitions. [2020-07-17 13:30:16,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-07-17 13:30:16,049 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:30:16,050 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:30:16,050 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 13:30:16,050 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:30:16,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:30:16,051 INFO L82 PathProgramCache]: Analyzing trace with hash 278069346, now seen corresponding path program 1 times [2020-07-17 13:30:16,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:30:16,051 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1374568615] [2020-07-17 13:30:16,051 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:30:16,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:16,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:16,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:16,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:16,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 13:30:16,408 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:30:16,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1374568615] [2020-07-17 13:30:16,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:30:16,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-07-17 13:30:16,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867218516] [2020-07-17 13:30:16,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-07-17 13:30:16,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:30:16,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-07-17 13:30:16,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2020-07-17 13:30:16,411 INFO L87 Difference]: Start difference. First operand 59 states and 62 transitions. Second operand 17 states. [2020-07-17 13:30:16,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:30:16,902 INFO L93 Difference]: Finished difference Result 104 states and 111 transitions. [2020-07-17 13:30:16,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-17 13:30:16,902 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 45 [2020-07-17 13:30:16,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:30:16,903 INFO L225 Difference]: With dead ends: 104 [2020-07-17 13:30:16,903 INFO L226 Difference]: Without dead ends: 0 [2020-07-17 13:30:16,904 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=103, Invalid=599, Unknown=0, NotChecked=0, Total=702 [2020-07-17 13:30:16,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-17 13:30:16,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-17 13:30:16,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-17 13:30:16,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-17 13:30:16,906 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 45 [2020-07-17 13:30:16,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:30:16,906 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-17 13:30:16,907 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-07-17 13:30:16,907 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-17 13:30:16,907 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 13:30:16,910 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-17 13:30:16,913 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-17 13:30:17,425 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (= |#valid| |old(#valid)|) [2020-07-17 13:30:17,425 INFO L271 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-07-17 13:30:17,425 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-17 13:30:17,425 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#valid| |old(#valid)|) (= |old(#NULL.base)| |#NULL.base|) (= |#NULL.offset| |old(#NULL.offset)|)) [2020-07-17 13:30:17,425 INFO L271 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-07-17 13:30:17,426 INFO L271 CegarLoopResult]: At program point myexitENTRY(lines 561 563) the Hoare annotation is: true [2020-07-17 13:30:17,426 INFO L268 CegarLoopResult]: For program point myexitEXIT(lines 561 563) no Hoare annotation was computed. [2020-07-17 13:30:17,426 INFO L271 CegarLoopResult]: At program point L562(line 562) the Hoare annotation is: true [2020-07-17 13:30:17,426 INFO L271 CegarLoopResult]: At program point L578-1(lines 578 580) the Hoare annotation is: true [2020-07-17 13:30:17,426 INFO L264 CegarLoopResult]: At program point dll_createENTRY(lines 574 591) the Hoare annotation is: (and (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#length)| |#length|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) [2020-07-17 13:30:17,426 INFO L264 CegarLoopResult]: At program point L574(lines 574 591) the Hoare annotation is: (and (= |#valid| |old(#valid)|) (= dll_create_~len |dll_create_#in~len|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#length)| |#length|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) [2020-07-17 13:30:17,427 INFO L271 CegarLoopResult]: At program point L576-2(lines 576 589) the Hoare annotation is: true [2020-07-17 13:30:17,427 INFO L271 CegarLoopResult]: At program point L576-3(lines 576 589) the Hoare annotation is: true [2020-07-17 13:30:17,427 INFO L271 CegarLoopResult]: At program point dll_createFINAL(lines 574 591) the Hoare annotation is: true [2020-07-17 13:30:17,427 INFO L271 CegarLoopResult]: At program point L585(line 585) the Hoare annotation is: true [2020-07-17 13:30:17,427 INFO L271 CegarLoopResult]: At program point L583(lines 576 589) the Hoare annotation is: true [2020-07-17 13:30:17,427 INFO L271 CegarLoopResult]: At program point L581(line 581) the Hoare annotation is: true [2020-07-17 13:30:17,427 INFO L271 CegarLoopResult]: At program point L579(line 579) the Hoare annotation is: true [2020-07-17 13:30:17,428 INFO L271 CegarLoopResult]: At program point L577(line 577) the Hoare annotation is: true [2020-07-17 13:30:17,428 INFO L271 CegarLoopResult]: At program point L577-1(line 577) the Hoare annotation is: true [2020-07-17 13:30:17,428 INFO L264 CegarLoopResult]: At program point L575(line 575) the Hoare annotation is: (and (= |#valid| |old(#valid)|) (= dll_create_~len |dll_create_#in~len|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#length)| |#length|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) [2020-07-17 13:30:17,428 INFO L271 CegarLoopResult]: At program point dll_createEXIT(lines 574 591) the Hoare annotation is: true [2020-07-17 13:30:17,428 INFO L271 CegarLoopResult]: At program point L588(line 588) the Hoare annotation is: true [2020-07-17 13:30:17,429 INFO L271 CegarLoopResult]: At program point L588-1(line 588) the Hoare annotation is: true [2020-07-17 13:30:17,429 INFO L271 CegarLoopResult]: At program point L588-2(line 588) the Hoare annotation is: true [2020-07-17 13:30:17,429 INFO L271 CegarLoopResult]: At program point L584(lines 584 586) the Hoare annotation is: true [2020-07-17 13:30:17,429 INFO L271 CegarLoopResult]: At program point L582(line 582) the Hoare annotation is: true [2020-07-17 13:30:17,429 INFO L271 CegarLoopResult]: At program point L578(lines 578 580) the Hoare annotation is: true [2020-07-17 13:30:17,429 INFO L268 CegarLoopResult]: For program point L66-1(line 66) no Hoare annotation was computed. [2020-07-17 13:30:17,429 INFO L268 CegarLoopResult]: For program point __bswap_32ENTRY(lines 63 67) no Hoare annotation was computed. [2020-07-17 13:30:17,429 INFO L268 CegarLoopResult]: For program point __bswap_32FINAL(lines 63 67) no Hoare annotation was computed. [2020-07-17 13:30:17,430 INFO L268 CegarLoopResult]: For program point __bswap_32EXIT(lines 63 67) no Hoare annotation was computed. [2020-07-17 13:30:17,430 INFO L268 CegarLoopResult]: For program point L66(line 66) no Hoare annotation was computed. [2020-07-17 13:30:17,430 INFO L268 CegarLoopResult]: For program point __bswap_64ENTRY(lines 68 72) no Hoare annotation was computed. [2020-07-17 13:30:17,430 INFO L268 CegarLoopResult]: For program point __bswap_64FINAL(lines 68 72) no Hoare annotation was computed. [2020-07-17 13:30:17,430 INFO L268 CegarLoopResult]: For program point L71(line 71) no Hoare annotation was computed. [2020-07-17 13:30:17,430 INFO L268 CegarLoopResult]: For program point L71-1(line 71) no Hoare annotation was computed. [2020-07-17 13:30:17,430 INFO L268 CegarLoopResult]: For program point __bswap_64EXIT(lines 68 72) no Hoare annotation was computed. [2020-07-17 13:30:17,431 INFO L271 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-07-17 13:30:17,431 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-17 13:30:17,431 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-17 13:30:17,431 INFO L271 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-07-17 13:30:17,431 INFO L264 CegarLoopResult]: At program point L609(lines 600 614) the Hoare annotation is: (and (<= 2 main_~len~0) (< main_~i~0 0) (or (not (= 0 (select (select |#memory_$Pointer$.base| |main_~#s~0.base|) |main_~#s~0.offset|))) (not (= (select (select |#memory_$Pointer$.offset| |main_~#s~0.base|) |main_~#s~0.offset|) 0)))) [2020-07-17 13:30:17,431 INFO L264 CegarLoopResult]: At program point L605(line 605) the Hoare annotation is: (<= 2 main_~len~0) [2020-07-17 13:30:17,431 INFO L264 CegarLoopResult]: At program point L603(line 603) the Hoare annotation is: (and (= |#valid| |old(#valid)|) (<= 2 main_~len~0) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#length)| |#length|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) [2020-07-17 13:30:17,431 INFO L264 CegarLoopResult]: At program point L603-1(line 603) the Hoare annotation is: (<= 2 main_~len~0) [2020-07-17 13:30:17,432 INFO L264 CegarLoopResult]: At program point L605-3(line 605) the Hoare annotation is: (and (<= 2 main_~len~0) (= |main_#t~post9| main_~i~0)) [2020-07-17 13:30:17,432 INFO L264 CegarLoopResult]: At program point L603-2(line 603) the Hoare annotation is: (<= 2 main_~len~0) [2020-07-17 13:30:17,432 INFO L264 CegarLoopResult]: At program point L605-4(line 605) the Hoare annotation is: (and (<= 2 main_~len~0) (= |main_#t~post9| (+ main_~i~0 1))) [2020-07-17 13:30:17,432 INFO L271 CegarLoopResult]: At program point mainEXIT(lines 600 614) the Hoare annotation is: true [2020-07-17 13:30:17,432 INFO L264 CegarLoopResult]: At program point L603-3(line 603) the Hoare annotation is: (<= 2 main_~len~0) [2020-07-17 13:30:17,432 INFO L264 CegarLoopResult]: At program point L605-5(lines 605 607) the Hoare annotation is: (<= 2 main_~len~0) [2020-07-17 13:30:17,432 INFO L264 CegarLoopResult]: At program point L605-6(lines 605 607) the Hoare annotation is: (and (<= 2 main_~len~0) (< main_~i~0 0)) [2020-07-17 13:30:17,432 INFO L271 CegarLoopResult]: At program point L603-4(line 603) the Hoare annotation is: true [2020-07-17 13:30:17,432 INFO L271 CegarLoopResult]: At program point L603-5(line 603) the Hoare annotation is: true [2020-07-17 13:30:17,433 INFO L264 CegarLoopResult]: At program point L603-6(line 603) the Hoare annotation is: false [2020-07-17 13:30:17,433 INFO L264 CegarLoopResult]: At program point L603-7(line 603) the Hoare annotation is: false [2020-07-17 13:30:17,433 INFO L271 CegarLoopResult]: At program point mainFINAL(lines 600 614) the Hoare annotation is: true [2020-07-17 13:30:17,433 INFO L264 CegarLoopResult]: At program point L608(lines 608 610) the Hoare annotation is: (and (= (select (select |#memory_$Pointer$.base| |main_~#s~0.base|) |main_~#s~0.offset|) |main_#t~mem10.base|) (<= 2 main_~len~0) (< main_~i~0 0) (= (select (select |#memory_$Pointer$.offset| |main_~#s~0.base|) |main_~#s~0.offset|) |main_#t~mem10.offset|)) [2020-07-17 13:30:17,433 INFO L264 CegarLoopResult]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 612) the Hoare annotation is: false [2020-07-17 13:30:17,434 INFO L264 CegarLoopResult]: At program point L608-1(line 608) the Hoare annotation is: (and (or (not (= 0 |main_#t~mem10.offset|)) (not (= 0 |main_#t~mem10.base|))) (= (select (select |#memory_$Pointer$.base| |main_~#s~0.base|) |main_~#s~0.offset|) |main_#t~mem10.base|) (<= 2 main_~len~0) (< main_~i~0 0) (= (select (select |#memory_$Pointer$.offset| |main_~#s~0.base|) |main_~#s~0.offset|) |main_#t~mem10.offset|)) [2020-07-17 13:30:17,434 INFO L264 CegarLoopResult]: At program point L606(line 606) the Hoare annotation is: (<= 2 main_~len~0) [2020-07-17 13:30:17,434 INFO L271 CegarLoopResult]: At program point L608-2(line 608) the Hoare annotation is: true [2020-07-17 13:30:17,434 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 600 614) the Hoare annotation is: (and (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#length)| |#length|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) [2020-07-17 13:30:17,434 INFO L264 CegarLoopResult]: At program point L606-1(lines 605 607) the Hoare annotation is: (<= 2 main_~len~0) [2020-07-17 13:30:17,435 INFO L264 CegarLoopResult]: At program point L604(line 604) the Hoare annotation is: (<= 2 main_~len~0) [2020-07-17 13:30:17,435 INFO L264 CegarLoopResult]: At program point L602(line 602) the Hoare annotation is: (and (= |#valid| |old(#valid)|) (<= 2 main_~len~0) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#length)| |#length|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) [2020-07-17 13:30:17,435 INFO L264 CegarLoopResult]: At program point L613(line 613) the Hoare annotation is: false [2020-07-17 13:30:17,435 INFO L271 CegarLoopResult]: At program point L611(line 611) the Hoare annotation is: true [2020-07-17 13:30:17,435 INFO L268 CegarLoopResult]: For program point L571(line 571) no Hoare annotation was computed. [2020-07-17 13:30:17,435 INFO L268 CegarLoopResult]: For program point node_createENTRY(lines 564 573) no Hoare annotation was computed. [2020-07-17 13:30:17,435 INFO L268 CegarLoopResult]: For program point L570(line 570) no Hoare annotation was computed. [2020-07-17 13:30:17,435 INFO L268 CegarLoopResult]: For program point L569(line 569) no Hoare annotation was computed. [2020-07-17 13:30:17,436 INFO L268 CegarLoopResult]: For program point L567(line 567) no Hoare annotation was computed. [2020-07-17 13:30:17,436 INFO L268 CegarLoopResult]: For program point L566(lines 566 568) no Hoare annotation was computed. [2020-07-17 13:30:17,436 INFO L268 CegarLoopResult]: For program point node_createEXIT(lines 564 573) no Hoare annotation was computed. [2020-07-17 13:30:17,436 INFO L268 CegarLoopResult]: For program point L565(line 565) no Hoare annotation was computed. [2020-07-17 13:30:17,436 INFO L268 CegarLoopResult]: For program point L566-1(lines 566 568) no Hoare annotation was computed. [2020-07-17 13:30:17,436 INFO L268 CegarLoopResult]: For program point L565-1(line 565) no Hoare annotation was computed. [2020-07-17 13:30:17,436 INFO L268 CegarLoopResult]: For program point node_createFINAL(lines 564 573) no Hoare annotation was computed. [2020-07-17 13:30:17,437 INFO L271 CegarLoopResult]: At program point dll_remove_firstFINAL(lines 592 599) the Hoare annotation is: true [2020-07-17 13:30:17,437 INFO L271 CegarLoopResult]: At program point dll_remove_firstEXIT(lines 592 599) the Hoare annotation is: true [2020-07-17 13:30:17,437 INFO L271 CegarLoopResult]: At program point L598(line 598) the Hoare annotation is: true [2020-07-17 13:30:17,437 INFO L264 CegarLoopResult]: At program point L597(line 597) the Hoare annotation is: (= |#valid| |old(#valid)|) [2020-07-17 13:30:17,437 INFO L271 CegarLoopResult]: At program point L597-1(line 597) the Hoare annotation is: true [2020-07-17 13:30:17,437 INFO L264 CegarLoopResult]: At program point L595(line 595) the Hoare annotation is: (and (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) [2020-07-17 13:30:17,438 INFO L264 CegarLoopResult]: At program point L594(lines 594 596) the Hoare annotation is: (and (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) [2020-07-17 13:30:17,438 INFO L264 CegarLoopResult]: At program point L593(line 593) the Hoare annotation is: (and (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) [2020-07-17 13:30:17,438 INFO L264 CegarLoopResult]: At program point L594-1(lines 594 596) the Hoare annotation is: (= |#valid| |old(#valid)|) [2020-07-17 13:30:17,438 INFO L264 CegarLoopResult]: At program point L593-1(line 593) the Hoare annotation is: (and (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) [2020-07-17 13:30:17,438 INFO L264 CegarLoopResult]: At program point L593-2(line 593) the Hoare annotation is: (and (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) [2020-07-17 13:30:17,438 INFO L264 CegarLoopResult]: At program point L593-3(line 593) the Hoare annotation is: (and (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) [2020-07-17 13:30:17,439 INFO L264 CegarLoopResult]: At program point L593-4(line 593) the Hoare annotation is: (and (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) [2020-07-17 13:30:17,439 INFO L264 CegarLoopResult]: At program point dll_remove_firstENTRY(lines 592 599) the Hoare annotation is: (and (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) [2020-07-17 13:30:17,453 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-07-17 13:30:17,454 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-07-17 13:30:17,455 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-07-17 13:30:17,455 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-07-17 13:30:17,455 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-07-17 13:30:17,455 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-07-17 13:30:17,456 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-07-17 13:30:17,456 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-07-17 13:30:17,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 01:30:17 BoogieIcfgContainer [2020-07-17 13:30:17,458 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 13:30:17,461 INFO L168 Benchmark]: Toolchain (without parser) took 4096.10 ms. Allocated memory was 146.8 MB in the beginning and 244.8 MB in the end (delta: 98.0 MB). Free memory was 103.5 MB in the beginning and 193.3 MB in the end (delta: -89.8 MB). Peak memory consumption was 108.0 MB. Max. memory is 7.1 GB. [2020-07-17 13:30:17,462 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 146.8 MB. Free memory was 123.4 MB in the beginning and 123.2 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-07-17 13:30:17,464 INFO L168 Benchmark]: CACSL2BoogieTranslator took 614.41 ms. Allocated memory was 146.8 MB in the beginning and 203.9 MB in the end (delta: 57.1 MB). Free memory was 103.1 MB in the beginning and 169.3 MB in the end (delta: -66.2 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. [2020-07-17 13:30:17,464 INFO L168 Benchmark]: Boogie Preprocessor took 67.14 ms. Allocated memory is still 203.9 MB. Free memory was 169.3 MB in the beginning and 166.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-07-17 13:30:17,465 INFO L168 Benchmark]: RCFGBuilder took 680.65 ms. Allocated memory is still 203.9 MB. Free memory was 166.7 MB in the beginning and 116.9 MB in the end (delta: 49.8 MB). Peak memory consumption was 49.8 MB. Max. memory is 7.1 GB. [2020-07-17 13:30:17,466 INFO L168 Benchmark]: TraceAbstraction took 2727.22 ms. Allocated memory was 203.9 MB in the beginning and 244.8 MB in the end (delta: 40.9 MB). Free memory was 116.2 MB in the beginning and 193.3 MB in the end (delta: -77.1 MB). Peak memory consumption was 63.6 MB. Max. memory is 7.1 GB. [2020-07-17 13:30:17,471 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 146.8 MB. Free memory was 123.4 MB in the beginning and 123.2 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 614.41 ms. Allocated memory was 146.8 MB in the beginning and 203.9 MB in the end (delta: 57.1 MB). Free memory was 103.1 MB in the beginning and 169.3 MB in the end (delta: -66.2 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 67.14 ms. Allocated memory is still 203.9 MB. Free memory was 169.3 MB in the beginning and 166.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 680.65 ms. Allocated memory is still 203.9 MB. Free memory was 166.7 MB in the beginning and 116.9 MB in the end (delta: 49.8 MB). Peak memory consumption was 49.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2727.22 ms. Allocated memory was 203.9 MB in the beginning and 244.8 MB in the end (delta: 40.9 MB). Free memory was 116.2 MB in the beginning and 193.3 MB in the end (delta: -77.1 MB). Peak memory consumption was 63.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 612]: 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 - InvariantResult [Line: 562]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 605]: Loop Invariant Derived loop invariant: 2 <= len - InvariantResult [Line: 600]: Loop Invariant [2020-07-17 13:30:17,480 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-07-17 13:30:17,480 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-07-17 13:30:17,481 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-07-17 13:30:17,481 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-07-17 13:30:17,481 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-07-17 13:30:17,482 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-07-17 13:30:17,482 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-07-17 13:30:17,482 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ Derived loop invariant: (2 <= len && i < 0) && (!(0 == #memory_$Pointer$[s][s]) || !(#memory_$Pointer$[s][s] == 0)) - InvariantResult [Line: 576]: Loop Invariant Derived loop invariant: 1 - ProcedureContractResult [Line: 574]: Procedure Contract for dll_create Derived contract for procedure dll_create: 1 - ProcedureContractResult [Line: 600]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 592]: Procedure Contract for dll_remove_first Derived contract for procedure dll_remove_first: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 94 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.1s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 162 SDtfs, 181 SDslu, 316 SDs, 0 SdLazy, 438 SolverSat, 35 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 63 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=72occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 17 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 72 LocationsWithAnnotation, 100 PreInvPairs, 142 NumberOfFragments, 393 HoareAnnotationTreeSize, 100 FomulaSimplifications, 485 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 72 FomulaSimplificationsInter, 189 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...