/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/forester-heap/dll-token-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 13:25:24,215 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 13:25:24,217 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 13:25:24,228 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 13:25:24,229 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 13:25:24,230 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 13:25:24,231 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 13:25:24,233 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 13:25:24,234 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 13:25:24,235 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 13:25:24,236 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 13:25:24,237 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 13:25:24,237 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 13:25:24,238 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 13:25:24,239 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 13:25:24,240 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 13:25:24,241 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 13:25:24,242 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 13:25:24,244 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 13:25:24,246 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 13:25:24,247 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 13:25:24,248 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 13:25:24,249 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 13:25:24,250 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 13:25:24,253 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-07 13:25:24,253 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-07 13:25:24,253 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-07 13:25:24,254 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-07 13:25:24,254 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-07 13:25:24,255 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-07 13:25:24,255 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-07 13:25:24,256 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-07 13:25:24,257 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-07 13:25:24,257 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-07 13:25:24,258 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-07 13:25:24,259 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-07 13:25:24,259 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-07 13:25:24,259 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-07 13:25:24,260 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 13:25:24,261 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 13:25:24,261 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 13:25:24,262 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-07 13:25:24,270 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 13:25:24,271 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 13:25:24,272 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 13:25:24,272 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 13:25:24,272 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 13:25:24,272 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 13:25:24,273 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 13:25:24,273 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 13:25:24,273 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 13:25:24,273 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 13:25:24,273 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 13:25:24,274 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 13:25:24,274 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 13:25:24,274 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 13:25:24,274 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 13:25:24,274 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-07 13:25:24,275 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 13:25:24,275 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 13:25:24,275 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 13:25:24,275 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 13:25:24,275 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-07 13:25:24,276 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 13:25:24,276 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-07 13:25:24,538 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 13:25:24,550 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 13:25:24,553 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 13:25:24,555 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 13:25:24,555 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 13:25:24,556 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-token-2.i [2020-07-07 13:25:24,611 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2548292f5/f6cf0c0a0fce438881ae68fb729c0b1b/FLAG64d7e1638 [2020-07-07 13:25:25,147 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 13:25:25,148 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-token-2.i [2020-07-07 13:25:25,162 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2548292f5/f6cf0c0a0fce438881ae68fb729c0b1b/FLAG64d7e1638 [2020-07-07 13:25:25,379 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2548292f5/f6cf0c0a0fce438881ae68fb729c0b1b [2020-07-07 13:25:25,390 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 13:25:25,392 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 13:25:25,393 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 13:25:25,393 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 13:25:25,397 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 13:25:25,398 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:25:25" (1/1) ... [2020-07-07 13:25:25,402 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d084492 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:25, skipping insertion in model container [2020-07-07 13:25:25,402 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:25:25" (1/1) ... [2020-07-07 13:25:25,410 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 13:25:25,464 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 13:25:25,876 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:25:25,893 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 13:25:25,979 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:25:26,032 INFO L208 MainTranslator]: Completed translation [2020-07-07 13:25:26,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:26 WrapperNode [2020-07-07 13:25:26,033 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 13:25:26,034 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 13:25:26,034 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 13:25:26,034 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 13:25:26,048 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:26" (1/1) ... [2020-07-07 13:25:26,048 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:26" (1/1) ... [2020-07-07 13:25:26,064 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:26" (1/1) ... [2020-07-07 13:25:26,065 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:26" (1/1) ... [2020-07-07 13:25:26,083 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:26" (1/1) ... [2020-07-07 13:25:26,091 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:26" (1/1) ... [2020-07-07 13:25:26,094 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:26" (1/1) ... [2020-07-07 13:25:26,100 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 13:25:26,101 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 13:25:26,101 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 13:25:26,101 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 13:25:26,102 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:26" (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 [2020-07-07 13:25:26,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 13:25:26,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 13:25:26,183 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 13:25:26,184 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-07 13:25:26,184 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-07 13:25:26,184 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-07 13:25:26,184 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-07 13:25:26,184 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-07 13:25:26,184 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-07 13:25:26,185 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-07 13:25:26,185 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-07 13:25:26,185 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-07 13:25:26,185 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-07 13:25:26,185 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-07 13:25:26,185 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-07 13:25:26,186 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-07 13:25:26,186 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-07 13:25:26,186 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-07 13:25:26,186 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-07 13:25:26,186 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-07 13:25:26,186 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-07 13:25:26,187 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-07 13:25:26,187 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-07 13:25:26,187 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-07 13:25:26,187 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-07 13:25:26,187 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-07 13:25:26,188 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-07 13:25:26,188 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-07 13:25:26,188 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-07 13:25:26,188 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-07 13:25:26,188 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-07 13:25:26,188 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-07 13:25:26,189 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-07 13:25:26,189 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-07 13:25:26,189 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-07 13:25:26,189 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-07 13:25:26,189 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-07 13:25:26,189 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-07 13:25:26,190 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-07 13:25:26,190 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-07 13:25:26,190 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-07 13:25:26,190 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-07 13:25:26,190 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-07 13:25:26,190 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-07 13:25:26,190 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-07 13:25:26,191 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-07 13:25:26,191 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-07 13:25:26,191 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-07 13:25:26,191 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-07 13:25:26,193 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-07 13:25:26,193 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-07 13:25:26,193 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-07 13:25:26,193 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-07 13:25:26,194 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-07 13:25:26,194 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-07 13:25:26,194 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-07 13:25:26,194 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-07 13:25:26,194 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-07 13:25:26,195 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-07 13:25:26,195 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-07 13:25:26,195 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-07 13:25:26,195 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-07-07 13:25:26,195 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-07 13:25:26,195 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-07 13:25:26,195 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-07-07 13:25:26,196 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-07 13:25:26,196 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-07 13:25:26,196 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-07-07 13:25:26,196 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-07 13:25:26,196 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-07 13:25:26,196 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-07 13:25:26,197 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-07 13:25:26,197 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-07 13:25:26,197 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-07 13:25:26,198 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-07 13:25:26,198 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-07 13:25:26,198 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-07 13:25:26,199 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-07 13:25:26,199 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-07 13:25:26,199 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-07 13:25:26,200 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-07 13:25:26,200 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-07 13:25:26,200 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-07 13:25:26,200 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-07 13:25:26,201 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-07 13:25:26,201 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-07 13:25:26,201 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-07 13:25:26,201 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-07 13:25:26,201 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-07 13:25:26,201 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-07 13:25:26,201 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-07 13:25:26,202 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-07 13:25:26,202 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-07 13:25:26,202 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-07 13:25:26,202 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-07 13:25:26,202 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-07 13:25:26,202 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-07 13:25:26,203 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-07 13:25:26,203 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-07 13:25:26,203 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-07 13:25:26,204 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-07 13:25:26,204 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-07 13:25:26,204 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-07 13:25:26,204 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-07 13:25:26,204 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-07 13:25:26,204 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-07 13:25:26,205 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 13:25:26,205 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 13:25:26,206 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 13:25:26,206 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-07 13:25:26,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-07 13:25:26,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-07 13:25:26,206 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-07 13:25:26,206 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-07 13:25:26,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-07 13:25:26,207 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 13:25:26,207 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 13:25:26,906 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 13:25:26,906 INFO L295 CfgBuilder]: Removed 15 assume(true) statements. [2020-07-07 13:25:26,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:25:26 BoogieIcfgContainer [2020-07-07 13:25:26,915 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 13:25:26,918 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 13:25:26,919 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 13:25:26,923 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 13:25:26,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 01:25:25" (1/3) ... [2020-07-07 13:25:26,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@259dce15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:25:26, skipping insertion in model container [2020-07-07 13:25:26,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:26" (2/3) ... [2020-07-07 13:25:26,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@259dce15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:25:26, skipping insertion in model container [2020-07-07 13:25:26,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:25:26" (3/3) ... [2020-07-07 13:25:26,929 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-token-2.i [2020-07-07 13:25:26,942 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-07 13:25:26,953 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-07-07 13:25:26,970 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-07-07 13:25:26,997 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 13:25:26,997 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 13:25:26,997 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-07 13:25:26,998 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 13:25:26,998 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 13:25:26,998 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 13:25:26,998 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 13:25:26,999 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 13:25:27,027 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states. [2020-07-07 13:25:27,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-07 13:25:27,043 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:25:27,044 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:25:27,046 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:25:27,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:25:27,057 INFO L82 PathProgramCache]: Analyzing trace with hash 536950687, now seen corresponding path program 1 times [2020-07-07 13:25:27,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:25:27,069 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [276725738] [2020-07-07 13:25:27,079 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:25:27,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:27,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:27,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:25:27,324 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:25:27,327 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [276725738] [2020-07-07 13:25:27,329 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:25:27,329 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 13:25:27,330 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937497505] [2020-07-07 13:25:27,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 13:25:27,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:25:27,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 13:25:27,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:25:27,357 INFO L87 Difference]: Start difference. First operand 101 states. Second operand 3 states. [2020-07-07 13:25:27,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:25:27,628 INFO L93 Difference]: Finished difference Result 189 states and 235 transitions. [2020-07-07 13:25:27,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 13:25:27,630 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-07-07 13:25:27,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:25:27,642 INFO L225 Difference]: With dead ends: 189 [2020-07-07 13:25:27,643 INFO L226 Difference]: Without dead ends: 90 [2020-07-07 13:25:27,648 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:25:27,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-07-07 13:25:27,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2020-07-07 13:25:27,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-07-07 13:25:27,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 92 transitions. [2020-07-07 13:25:27,704 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 92 transitions. Word has length 26 [2020-07-07 13:25:27,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:25:27,704 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 92 transitions. [2020-07-07 13:25:27,704 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 13:25:27,705 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 92 transitions. [2020-07-07 13:25:27,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-07 13:25:27,706 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:25:27,706 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] [2020-07-07 13:25:27,706 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 13:25:27,707 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:25:27,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:25:27,707 INFO L82 PathProgramCache]: Analyzing trace with hash -692885691, now seen corresponding path program 1 times [2020-07-07 13:25:27,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:25:27,708 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1511870942] [2020-07-07 13:25:27,708 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:25:27,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:27,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:27,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:25:27,970 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:25:27,971 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1511870942] [2020-07-07 13:25:27,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:25:27,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-07-07 13:25:27,971 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464172246] [2020-07-07 13:25:27,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-07 13:25:27,973 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:25:27,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-07 13:25:27,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-07-07 13:25:27,974 INFO L87 Difference]: Start difference. First operand 90 states and 92 transitions. Second operand 12 states. [2020-07-07 13:25:28,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:25:28,786 INFO L93 Difference]: Finished difference Result 174 states and 179 transitions. [2020-07-07 13:25:28,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-07 13:25:28,787 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2020-07-07 13:25:28,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:25:28,789 INFO L225 Difference]: With dead ends: 174 [2020-07-07 13:25:28,789 INFO L226 Difference]: Without dead ends: 172 [2020-07-07 13:25:28,791 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2020-07-07 13:25:28,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-07-07 13:25:28,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 103. [2020-07-07 13:25:28,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-07-07 13:25:28,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 106 transitions. [2020-07-07 13:25:28,812 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 106 transitions. Word has length 27 [2020-07-07 13:25:28,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:25:28,813 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 106 transitions. [2020-07-07 13:25:28,813 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-07 13:25:28,813 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 106 transitions. [2020-07-07 13:25:28,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-07 13:25:28,814 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:25:28,814 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] [2020-07-07 13:25:28,815 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 13:25:28,815 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:25:28,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:25:28,816 INFO L82 PathProgramCache]: Analyzing trace with hash 2098857180, now seen corresponding path program 1 times [2020-07-07 13:25:28,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:25:28,816 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [972440305] [2020-07-07 13:25:28,817 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:25:28,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:28,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:28,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:25:28,902 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:25:28,902 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [972440305] [2020-07-07 13:25:28,903 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:25:28,903 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-07 13:25:28,903 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103780142] [2020-07-07 13:25:28,903 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-07 13:25:28,904 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:25:28,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-07 13:25:28,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-07 13:25:28,904 INFO L87 Difference]: Start difference. First operand 103 states and 106 transitions. Second operand 6 states. [2020-07-07 13:25:29,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:25:29,150 INFO L93 Difference]: Finished difference Result 160 states and 164 transitions. [2020-07-07 13:25:29,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-07 13:25:29,151 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-07-07 13:25:29,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:25:29,153 INFO L225 Difference]: With dead ends: 160 [2020-07-07 13:25:29,153 INFO L226 Difference]: Without dead ends: 158 [2020-07-07 13:25:29,156 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-07-07 13:25:29,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-07-07 13:25:29,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 101. [2020-07-07 13:25:29,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-07-07 13:25:29,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 104 transitions. [2020-07-07 13:25:29,194 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 104 transitions. Word has length 28 [2020-07-07 13:25:29,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:25:29,195 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 104 transitions. [2020-07-07 13:25:29,195 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-07 13:25:29,195 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 104 transitions. [2020-07-07 13:25:29,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-07-07 13:25:29,196 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:25:29,197 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] [2020-07-07 13:25:29,197 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-07 13:25:29,198 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:25:29,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:25:29,199 INFO L82 PathProgramCache]: Analyzing trace with hash 578708441, now seen corresponding path program 1 times [2020-07-07 13:25:29,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:25:29,199 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [429750705] [2020-07-07 13:25:29,200 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:25:29,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:29,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:29,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:25:29,327 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:25:29,328 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [429750705] [2020-07-07 13:25:29,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:25:29,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-07 13:25:29,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350525063] [2020-07-07 13:25:29,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-07 13:25:29,332 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:25:29,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-07 13:25:29,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-07 13:25:29,332 INFO L87 Difference]: Start difference. First operand 101 states and 104 transitions. Second operand 6 states. [2020-07-07 13:25:29,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:25:29,514 INFO L93 Difference]: Finished difference Result 101 states and 104 transitions. [2020-07-07 13:25:29,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-07 13:25:29,514 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2020-07-07 13:25:29,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:25:29,516 INFO L225 Difference]: With dead ends: 101 [2020-07-07 13:25:29,516 INFO L226 Difference]: Without dead ends: 98 [2020-07-07 13:25:29,516 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-07-07 13:25:29,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-07-07 13:25:29,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2020-07-07 13:25:29,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-07-07 13:25:29,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 101 transitions. [2020-07-07 13:25:29,530 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 101 transitions. Word has length 35 [2020-07-07 13:25:29,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:25:29,530 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 101 transitions. [2020-07-07 13:25:29,531 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-07 13:25:29,531 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 101 transitions. [2020-07-07 13:25:29,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-07-07 13:25:29,532 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:25:29,532 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] [2020-07-07 13:25:29,532 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-07 13:25:29,533 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:25:29,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:25:29,533 INFO L82 PathProgramCache]: Analyzing trace with hash 666566073, now seen corresponding path program 1 times [2020-07-07 13:25:29,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:25:29,533 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [680915521] [2020-07-07 13:25:29,534 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:25:29,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:29,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:30,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:25:30,001 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:25:30,002 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [680915521] [2020-07-07 13:25:30,002 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:25:30,002 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-07-07 13:25:30,003 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633262516] [2020-07-07 13:25:30,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-07 13:25:30,003 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:25:30,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-07 13:25:30,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2020-07-07 13:25:30,004 INFO L87 Difference]: Start difference. First operand 98 states and 101 transitions. Second operand 14 states. [2020-07-07 13:25:30,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:25:30,900 INFO L93 Difference]: Finished difference Result 229 states and 235 transitions. [2020-07-07 13:25:30,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-07-07 13:25:30,900 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 35 [2020-07-07 13:25:30,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:25:30,902 INFO L225 Difference]: With dead ends: 229 [2020-07-07 13:25:30,902 INFO L226 Difference]: Without dead ends: 186 [2020-07-07 13:25:30,903 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=188, Invalid=514, Unknown=0, NotChecked=0, Total=702 [2020-07-07 13:25:30,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-07-07 13:25:30,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 113. [2020-07-07 13:25:30,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-07-07 13:25:30,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 116 transitions. [2020-07-07 13:25:30,929 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 116 transitions. Word has length 35 [2020-07-07 13:25:30,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:25:30,929 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 116 transitions. [2020-07-07 13:25:30,930 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-07 13:25:30,930 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 116 transitions. [2020-07-07 13:25:30,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-07-07 13:25:30,931 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:25:30,931 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:25:30,931 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-07 13:25:30,932 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:25:30,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:25:30,932 INFO L82 PathProgramCache]: Analyzing trace with hash 323200756, now seen corresponding path program 1 times [2020-07-07 13:25:30,932 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:25:30,933 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [729256730] [2020-07-07 13:25:30,933 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:25:31,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:31,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:31,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:25:31,225 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:25:31,226 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [729256730] [2020-07-07 13:25:31,226 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:25:31,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-07-07 13:25:31,226 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425065262] [2020-07-07 13:25:31,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-07-07 13:25:31,227 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:25:31,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-07-07 13:25:31,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2020-07-07 13:25:31,228 INFO L87 Difference]: Start difference. First operand 113 states and 116 transitions. Second operand 17 states. [2020-07-07 13:25:32,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:25:32,231 INFO L93 Difference]: Finished difference Result 146 states and 150 transitions. [2020-07-07 13:25:32,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-07 13:25:32,236 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 41 [2020-07-07 13:25:32,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:25:32,237 INFO L225 Difference]: With dead ends: 146 [2020-07-07 13:25:32,237 INFO L226 Difference]: Without dead ends: 144 [2020-07-07 13:25:32,238 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=196, Invalid=616, Unknown=0, NotChecked=0, Total=812 [2020-07-07 13:25:32,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-07-07 13:25:32,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 100. [2020-07-07 13:25:32,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-07-07 13:25:32,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 103 transitions. [2020-07-07 13:25:32,256 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 103 transitions. Word has length 41 [2020-07-07 13:25:32,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:25:32,257 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 103 transitions. [2020-07-07 13:25:32,257 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-07-07 13:25:32,257 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 103 transitions. [2020-07-07 13:25:32,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-07-07 13:25:32,258 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:25:32,258 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] [2020-07-07 13:25:32,259 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-07 13:25:32,259 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:25:32,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:25:32,259 INFO L82 PathProgramCache]: Analyzing trace with hash 957359950, now seen corresponding path program 1 times [2020-07-07 13:25:32,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:25:32,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [378060930] [2020-07-07 13:25:32,260 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:25:32,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 13:25:32,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 13:25:32,327 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:25:32,327 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-07 13:25:32,327 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-07 13:25:32,328 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-07 13:25:32,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 01:25:32 BoogieIcfgContainer [2020-07-07 13:25:32,348 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 13:25:32,350 INFO L168 Benchmark]: Toolchain (without parser) took 6957.84 ms. Allocated memory was 145.2 MB in the beginning and 283.1 MB in the end (delta: 137.9 MB). Free memory was 102.1 MB in the beginning and 166.8 MB in the end (delta: -64.7 MB). Peak memory consumption was 73.2 MB. Max. memory is 7.1 GB. [2020-07-07 13:25:32,351 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 145.2 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-07 13:25:32,352 INFO L168 Benchmark]: CACSL2BoogieTranslator took 640.48 ms. Allocated memory was 145.2 MB in the beginning and 202.9 MB in the end (delta: 57.7 MB). Free memory was 101.9 MB in the beginning and 170.4 MB in the end (delta: -68.4 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. [2020-07-07 13:25:32,353 INFO L168 Benchmark]: Boogie Preprocessor took 66.85 ms. Allocated memory is still 202.9 MB. Free memory was 170.4 MB in the beginning and 167.4 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. [2020-07-07 13:25:32,354 INFO L168 Benchmark]: RCFGBuilder took 814.50 ms. Allocated memory is still 202.9 MB. Free memory was 166.7 MB in the beginning and 115.9 MB in the end (delta: 50.9 MB). Peak memory consumption was 50.9 MB. Max. memory is 7.1 GB. [2020-07-07 13:25:32,355 INFO L168 Benchmark]: TraceAbstraction took 5429.34 ms. Allocated memory was 202.9 MB in the beginning and 283.1 MB in the end (delta: 80.2 MB). Free memory was 115.2 MB in the beginning and 166.8 MB in the end (delta: -51.6 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. [2020-07-07 13:25:32,359 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 145.2 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 640.48 ms. Allocated memory was 145.2 MB in the beginning and 202.9 MB in the end (delta: 57.7 MB). Free memory was 101.9 MB in the beginning and 170.4 MB in the end (delta: -68.4 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 66.85 ms. Allocated memory is still 202.9 MB. Free memory was 170.4 MB in the beginning and 167.4 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 814.50 ms. Allocated memory is still 202.9 MB. Free memory was 166.7 MB in the beginning and 115.9 MB in the end (delta: 50.9 MB). Peak memory consumption was 50.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5429.34 ms. Allocated memory was 202.9 MB in the beginning and 283.1 MB in the end (delta: 80.2 MB). Free memory was 115.2 MB in the beginning and 166.8 MB in the end (delta: -51.6 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1026]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L993] SLL* head = malloc(sizeof(SLL)); [L994] head->next = ((void*)0) [L995] head->prev = ((void*)0) [L996] head->data = 0 [L998] SLL* x = head; [L1001] COND FALSE !(__VERIFIER_nondet_int()) [L1010] x->data = 1 [L1011] x->next = malloc(sizeof(SLL)) [L1012] EXPR x->next [L1012] x->next->prev = x [L1013] EXPR x->next [L1013] x->next->data = 2 [L1015] x = head [L1017] COND FALSE !(!(((void*)0) != x)) [L1019] EXPR x->data [L1019] COND FALSE !(1 != x->data) [L1024] EXPR x->data [L1024] COND FALSE !(!(1 == x->data)) [L1025] EXPR x->next [L1025] x = x->next [L1026] EXPR x->data [L1026] COND TRUE !(2 != x->data) [L1026] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 101 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.3s, OverallIterations: 7, TraceHistogramMax: 2, AutomataDifference: 3.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 425 SDtfs, 1330 SDslu, 1777 SDs, 0 SdLazy, 1948 SolverSat, 139 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 105 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=113occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 243 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...