/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/sll-token-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 16:41:57,284 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 16:41:57,289 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 16:41:57,332 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 16:41:57,332 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 16:41:57,340 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 16:41:57,343 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 16:41:57,347 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 16:41:57,350 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 16:41:57,353 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 16:41:57,354 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 16:41:57,355 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 16:41:57,355 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 16:41:57,358 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 16:41:57,361 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 16:41:57,362 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 16:41:57,364 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 16:41:57,366 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 16:41:57,367 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 16:41:57,378 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 16:41:57,380 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 16:41:57,381 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 16:41:57,382 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 16:41:57,383 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 16:41:57,395 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 16:41:57,396 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 16:41:57,401 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 16:41:57,402 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 16:41:57,402 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 16:41:57,403 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 16:41:57,404 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 16:41:57,404 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 16:41:57,405 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 16:41:57,410 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 16:41:57,411 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 16:41:57,411 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 16:41:57,412 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 16:41:57,412 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 16:41:57,412 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 16:41:57,413 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 16:41:57,414 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 16:41:57,415 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 16:41:57,438 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 16:41:57,438 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 16:41:57,441 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 16:41:57,441 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 16:41:57,442 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 16:41:57,442 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 16:41:57,442 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 16:41:57,442 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 16:41:57,443 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 16:41:57,443 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 16:41:57,444 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 16:41:57,444 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 16:41:57,445 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 16:41:57,445 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 16:41:57,445 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 16:41:57,445 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 16:41:57,446 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 16:41:57,446 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 16:41:57,446 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 16:41:57,446 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 16:41:57,447 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 16:41:57,447 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 16:41:57,447 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 16:41:57,908 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 16:41:57,929 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 16:41:57,935 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 16:41:57,938 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 16:41:57,939 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 16:41:57,940 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-token-1.i [2020-09-04 16:41:58,020 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d23c9bb24/017793bf9d4a4bcd88e85a13cb6748ed/FLAG4565c4043 [2020-09-04 16:41:58,654 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 16:41:58,654 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/sll-token-1.i [2020-09-04 16:41:58,668 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d23c9bb24/017793bf9d4a4bcd88e85a13cb6748ed/FLAG4565c4043 [2020-09-04 16:41:58,875 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d23c9bb24/017793bf9d4a4bcd88e85a13cb6748ed [2020-09-04 16:41:58,891 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 16:41:58,894 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 16:41:58,895 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 16:41:58,895 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 16:41:58,900 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 16:41:58,901 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 04:41:58" (1/1) ... [2020-09-04 16:41:58,905 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@589fe6a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:41:58, skipping insertion in model container [2020-09-04 16:41:58,906 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 04:41:58" (1/1) ... [2020-09-04 16:41:58,915 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 16:41:58,965 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 16:41:59,501 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 16:41:59,519 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 16:41:59,596 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 16:41:59,646 INFO L208 MainTranslator]: Completed translation [2020-09-04 16:41:59,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:41:59 WrapperNode [2020-09-04 16:41:59,647 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 16:41:59,648 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 16:41:59,648 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 16:41:59,648 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 16:41:59,667 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:41:59" (1/1) ... [2020-09-04 16:41:59,667 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:41:59" (1/1) ... [2020-09-04 16:41:59,693 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:41:59" (1/1) ... [2020-09-04 16:41:59,693 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:41:59" (1/1) ... [2020-09-04 16:41:59,712 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:41:59" (1/1) ... [2020-09-04 16:41:59,721 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:41:59" (1/1) ... [2020-09-04 16:41:59,725 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:41:59" (1/1) ... [2020-09-04 16:41:59,731 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 16:41:59,732 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 16:41:59,732 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 16:41:59,732 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 16:41:59,734 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:41:59" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 16:41:59,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 16:41:59,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 16:41:59,826 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 16:41:59,826 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-04 16:41:59,827 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-04 16:41:59,827 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-04 16:41:59,827 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-04 16:41:59,827 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-04 16:41:59,827 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-04 16:41:59,828 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-04 16:41:59,828 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-04 16:41:59,829 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-04 16:41:59,829 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-04 16:41:59,829 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-04 16:41:59,830 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-04 16:41:59,830 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-04 16:41:59,830 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-04 16:41:59,831 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-04 16:41:59,831 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-04 16:41:59,832 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-04 16:41:59,833 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-04 16:41:59,833 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-04 16:41:59,835 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-04 16:41:59,836 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-04 16:41:59,836 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-04 16:41:59,836 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-04 16:41:59,836 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-04 16:41:59,837 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-04 16:41:59,837 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-04 16:41:59,837 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-04 16:41:59,837 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-04 16:41:59,838 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-04 16:41:59,839 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-04 16:41:59,839 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-04 16:41:59,840 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-04 16:41:59,840 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-04 16:41:59,840 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-04 16:41:59,840 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-04 16:41:59,840 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-04 16:41:59,840 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-04 16:41:59,840 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-04 16:41:59,841 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-04 16:41:59,841 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-04 16:41:59,841 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-04 16:41:59,841 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-04 16:41:59,841 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-04 16:41:59,841 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-04 16:41:59,842 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-04 16:41:59,843 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-04 16:41:59,843 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-04 16:41:59,843 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-04 16:41:59,843 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-04 16:41:59,843 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-04 16:41:59,844 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 16:41:59,844 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-04 16:41:59,844 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-04 16:41:59,844 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-04 16:41:59,844 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-04 16:41:59,845 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-04 16:41:59,845 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-04 16:41:59,845 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-04 16:41:59,845 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-04 16:41:59,846 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 16:41:59,846 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-04 16:41:59,846 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-04 16:41:59,847 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-04 16:41:59,847 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-04 16:41:59,847 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-04 16:41:59,847 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-04 16:41:59,847 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-04 16:41:59,847 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-04 16:41:59,848 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-04 16:41:59,848 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-04 16:41:59,848 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-04 16:41:59,849 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-04 16:41:59,850 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-04 16:41:59,850 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-04 16:41:59,850 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-04 16:41:59,850 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-04 16:41:59,851 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-04 16:41:59,851 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-04 16:41:59,852 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-04 16:41:59,853 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-04 16:41:59,853 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-04 16:41:59,853 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-04 16:41:59,853 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-04 16:41:59,853 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-04 16:41:59,853 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-04 16:41:59,854 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-04 16:41:59,854 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-04 16:41:59,855 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-04 16:41:59,855 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-04 16:41:59,855 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-04 16:41:59,855 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-04 16:41:59,855 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-04 16:41:59,855 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-04 16:41:59,855 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-04 16:41:59,856 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-04 16:41:59,856 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-04 16:41:59,857 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-04 16:41:59,857 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-04 16:41:59,857 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-04 16:41:59,857 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-04 16:41:59,857 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-04 16:41:59,857 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-04 16:41:59,858 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-04 16:41:59,858 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 16:41:59,858 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 16:41:59,858 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 16:41:59,858 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 16:41:59,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-04 16:41:59,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 16:41:59,859 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-04 16:41:59,859 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 16:41:59,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 16:41:59,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 16:41:59,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 16:42:00,471 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 16:42:00,471 INFO L295 CfgBuilder]: Removed 15 assume(true) statements. [2020-09-04 16:42:00,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 04:42:00 BoogieIcfgContainer [2020-09-04 16:42:00,477 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 16:42:00,478 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 16:42:00,479 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 16:42:00,483 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 16:42:00,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 04:41:58" (1/3) ... [2020-09-04 16:42:00,484 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1296d92e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 04:42:00, skipping insertion in model container [2020-09-04 16:42:00,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:41:59" (2/3) ... [2020-09-04 16:42:00,485 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1296d92e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 04:42:00, skipping insertion in model container [2020-09-04 16:42:00,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 04:42:00" (3/3) ... [2020-09-04 16:42:00,487 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-token-1.i [2020-09-04 16:42:00,500 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 16:42:00,512 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-09-04 16:42:00,536 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-09-04 16:42:00,568 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 16:42:00,568 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 16:42:00,568 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 16:42:00,569 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 16:42:00,569 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 16:42:00,569 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 16:42:00,569 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 16:42:00,569 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 16:42:00,592 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states. [2020-09-04 16:42:00,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-04 16:42:00,604 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:42:00,605 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] [2020-09-04 16:42:00,606 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:42:00,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:42:00,613 INFO L82 PathProgramCache]: Analyzing trace with hash -1451075683, now seen corresponding path program 1 times [2020-09-04 16:42:00,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:42:00,624 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [715550220] [2020-09-04 16:42:00,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:42:00,712 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:42:00,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:00,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:42:00,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:00,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:42:00,888 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [715550220] [2020-09-04 16:42:00,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:42:00,891 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 16:42:00,891 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599168907] [2020-09-04 16:42:00,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 16:42:00,898 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:42:00,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 16:42:00,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 16:42:00,922 INFO L87 Difference]: Start difference. First operand 94 states. Second operand 3 states. [2020-09-04 16:42:01,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:42:01,219 INFO L93 Difference]: Finished difference Result 176 states and 222 transitions. [2020-09-04 16:42:01,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 16:42:01,221 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-09-04 16:42:01,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:42:01,235 INFO L225 Difference]: With dead ends: 176 [2020-09-04 16:42:01,236 INFO L226 Difference]: Without dead ends: 83 [2020-09-04 16:42:01,241 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 [2020-09-04 16:42:01,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-09-04 16:42:01,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2020-09-04 16:42:01,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-09-04 16:42:01,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 85 transitions. [2020-09-04 16:42:01,293 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 85 transitions. Word has length 22 [2020-09-04 16:42:01,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:42:01,293 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 85 transitions. [2020-09-04 16:42:01,293 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 16:42:01,294 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 85 transitions. [2020-09-04 16:42:01,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-04 16:42:01,295 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:42:01,295 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] [2020-09-04 16:42:01,295 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 16:42:01,296 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:42:01,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:42:01,296 INFO L82 PathProgramCache]: Analyzing trace with hash -410944389, now seen corresponding path program 1 times [2020-09-04 16:42:01,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:42:01,297 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1880745982] [2020-09-04 16:42:01,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:42:01,301 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:42:01,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:01,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:42:01,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:01,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:42:01,458 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1880745982] [2020-09-04 16:42:01,458 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:42:01,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-04 16:42:01,458 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016576693] [2020-09-04 16:42:01,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-04 16:42:01,462 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:42:01,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-04 16:42:01,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-04 16:42:01,463 INFO L87 Difference]: Start difference. First operand 83 states and 85 transitions. Second operand 7 states. [2020-09-04 16:42:01,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:42:01,922 INFO L93 Difference]: Finished difference Result 148 states and 152 transitions. [2020-09-04 16:42:01,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-04 16:42:01,923 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-04 16:42:01,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:42:01,927 INFO L225 Difference]: With dead ends: 148 [2020-09-04 16:42:01,927 INFO L226 Difference]: Without dead ends: 146 [2020-09-04 16:42:01,930 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-09-04 16:42:01,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-09-04 16:42:01,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 81. [2020-09-04 16:42:01,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-09-04 16:42:01,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 83 transitions. [2020-09-04 16:42:01,959 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 83 transitions. Word has length 23 [2020-09-04 16:42:01,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:42:01,960 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 83 transitions. [2020-09-04 16:42:01,960 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-04 16:42:01,960 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 83 transitions. [2020-09-04 16:42:01,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-04 16:42:01,961 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:42:01,961 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] [2020-09-04 16:42:01,962 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 16:42:01,962 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:42:01,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:42:01,962 INFO L82 PathProgramCache]: Analyzing trace with hash -922794179, now seen corresponding path program 1 times [2020-09-04 16:42:01,963 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:42:01,963 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1994097038] [2020-09-04 16:42:01,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:42:01,973 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:42:02,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:02,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:42:02,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:02,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:42:02,156 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1994097038] [2020-09-04 16:42:02,157 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:42:02,157 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-04 16:42:02,157 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894564177] [2020-09-04 16:42:02,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 16:42:02,158 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:42:02,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 16:42:02,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-04 16:42:02,159 INFO L87 Difference]: Start difference. First operand 81 states and 83 transitions. Second operand 6 states. [2020-09-04 16:42:02,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:42:02,413 INFO L93 Difference]: Finished difference Result 142 states and 146 transitions. [2020-09-04 16:42:02,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 16:42:02,413 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-09-04 16:42:02,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:42:02,415 INFO L225 Difference]: With dead ends: 142 [2020-09-04 16:42:02,415 INFO L226 Difference]: Without dead ends: 140 [2020-09-04 16:42:02,416 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 [2020-09-04 16:42:02,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-09-04 16:42:02,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 79. [2020-09-04 16:42:02,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-09-04 16:42:02,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 81 transitions. [2020-09-04 16:42:02,435 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 81 transitions. Word has length 24 [2020-09-04 16:42:02,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:42:02,435 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 81 transitions. [2020-09-04 16:42:02,436 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 16:42:02,436 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 81 transitions. [2020-09-04 16:42:02,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-04 16:42:02,437 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:42:02,437 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] [2020-09-04 16:42:02,438 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 16:42:02,438 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:42:02,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:42:02,439 INFO L82 PathProgramCache]: Analyzing trace with hash -1955200303, now seen corresponding path program 1 times [2020-09-04 16:42:02,439 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:42:02,439 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [300432315] [2020-09-04 16:42:02,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:42:02,443 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:42:02,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:02,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:42:02,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:02,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:42:02,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [300432315] [2020-09-04 16:42:02,907 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:42:02,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-09-04 16:42:02,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255317640] [2020-09-04 16:42:02,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-04 16:42:02,908 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:42:02,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-04 16:42:02,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-09-04 16:42:02,909 INFO L87 Difference]: Start difference. First operand 79 states and 81 transitions. Second operand 13 states. [2020-09-04 16:42:03,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:42:03,677 INFO L93 Difference]: Finished difference Result 223 states and 229 transitions. [2020-09-04 16:42:03,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-04 16:42:03,677 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 31 [2020-09-04 16:42:03,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:42:03,680 INFO L225 Difference]: With dead ends: 223 [2020-09-04 16:42:03,681 INFO L226 Difference]: Without dead ends: 177 [2020-09-04 16:42:03,682 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=150, Invalid=402, Unknown=0, NotChecked=0, Total=552 [2020-09-04 16:42:03,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-09-04 16:42:03,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 93. [2020-09-04 16:42:03,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-09-04 16:42:03,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 96 transitions. [2020-09-04 16:42:03,706 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 96 transitions. Word has length 31 [2020-09-04 16:42:03,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:42:03,707 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 96 transitions. [2020-09-04 16:42:03,707 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-04 16:42:03,707 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 96 transitions. [2020-09-04 16:42:03,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-04 16:42:03,708 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:42:03,708 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] [2020-09-04 16:42:03,708 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 16:42:03,709 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:42:03,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:42:03,709 INFO L82 PathProgramCache]: Analyzing trace with hash -2043057935, now seen corresponding path program 1 times [2020-09-04 16:42:03,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:42:03,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1440811927] [2020-09-04 16:42:03,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:42:03,713 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:42:03,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 16:42:03,737 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 16:42:03,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 16:42:03,758 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 16:42:03,795 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 16:42:03,796 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 16:42:03,796 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 16:42:03,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 04:42:03 BoogieIcfgContainer [2020-09-04 16:42:03,820 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 16:42:03,824 INFO L168 Benchmark]: Toolchain (without parser) took 4929.28 ms. Allocated memory was 139.5 MB in the beginning and 246.9 MB in the end (delta: 107.5 MB). Free memory was 102.5 MB in the beginning and 181.9 MB in the end (delta: -79.5 MB). Peak memory consumption was 28.0 MB. Max. memory is 7.1 GB. [2020-09-04 16:42:03,824 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 139.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 16:42:03,826 INFO L168 Benchmark]: CACSL2BoogieTranslator took 752.28 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 102.3 MB in the beginning and 170.6 MB in the end (delta: -68.4 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. [2020-09-04 16:42:03,826 INFO L168 Benchmark]: Boogie Preprocessor took 84.11 ms. Allocated memory is still 203.4 MB. Free memory was 170.6 MB in the beginning and 167.3 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. [2020-09-04 16:42:03,827 INFO L168 Benchmark]: RCFGBuilder took 745.08 ms. Allocated memory is still 203.4 MB. Free memory was 167.3 MB in the beginning and 117.9 MB in the end (delta: 49.4 MB). Peak memory consumption was 49.4 MB. Max. memory is 7.1 GB. [2020-09-04 16:42:03,828 INFO L168 Benchmark]: TraceAbstraction took 3341.69 ms. Allocated memory was 203.4 MB in the beginning and 246.9 MB in the end (delta: 43.5 MB). Free memory was 117.2 MB in the beginning and 181.9 MB in the end (delta: -64.7 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 16:42:03,832 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 139.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 752.28 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 102.3 MB in the beginning and 170.6 MB in the end (delta: -68.4 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 84.11 ms. Allocated memory is still 203.4 MB. Free memory was 170.6 MB in the beginning and 167.3 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 745.08 ms. Allocated memory is still 203.4 MB. Free memory was 167.3 MB in the beginning and 117.9 MB in the end (delta: 49.4 MB). Peak memory consumption was 49.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3341.69 ms. Allocated memory was 203.4 MB in the beginning and 246.9 MB in the end (delta: 43.5 MB). Free memory was 117.2 MB in the beginning and 181.9 MB in the end (delta: -64.7 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1020]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L992] SLL* head = malloc(sizeof(SLL)); [L993] head->next = ((void*)0) [L994] head->data = 0 [L996] SLL* x = head; [L999] COND FALSE !(__VERIFIER_nondet_int()) [L1007] x->data = 1 [L1008] x->next = malloc(sizeof(SLL)) [L1009] EXPR x->next [L1009] x->next->data = 2 [L1011] x = head [L1013] COND FALSE !(!(((void*)0) != x)) [L1015] EXPR x->data [L1015] COND FALSE !(1 != x->data) [L1020] EXPR x->data [L1020] COND TRUE !(2 == x->data) [L1020] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 94 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.2s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 344 SDtfs, 773 SDslu, 889 SDs, 0 SdLazy, 818 SolverSat, 65 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 53 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=94occurred 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: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 210 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...