/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-rb-cnstr_1-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 16:41:54,978 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 16:41:54,982 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 16:41:55,010 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 16:41:55,011 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 16:41:55,012 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 16:41:55,014 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 16:41:55,017 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 16:41:55,019 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 16:41:55,021 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 16:41:55,023 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 16:41:55,024 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 16:41:55,025 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 16:41:55,026 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 16:41:55,028 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 16:41:55,030 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 16:41:55,031 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 16:41:55,033 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 16:41:55,035 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 16:41:55,038 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 16:41:55,043 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 16:41:55,045 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 16:41:55,047 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 16:41:55,049 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 16:41:55,052 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 16:41:55,053 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 16:41:55,053 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 16:41:55,054 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 16:41:55,055 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 16:41:55,057 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 16:41:55,057 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 16:41:55,058 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 16:41:55,059 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 16:41:55,061 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 16:41:55,062 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 16:41:55,063 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 16:41:55,064 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 16:41:55,064 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 16:41:55,064 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 16:41:55,066 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 16:41:55,069 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 16:41:55,070 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 16:41:55,096 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 16:41:55,097 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 16:41:55,102 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 16:41:55,102 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 16:41:55,103 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 16:41:55,103 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 16:41:55,103 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 16:41:55,103 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 16:41:55,103 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 16:41:55,103 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 16:41:55,105 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 16:41:55,105 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 16:41:55,105 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 16:41:55,105 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 16:41:55,106 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 16:41:55,106 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 16:41:55,106 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 16:41:55,107 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 16:41:55,107 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 16:41:55,107 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 16:41:55,107 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 16:41:55,108 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 16:41:55,108 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 16:41:55,620 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 16:41:55,654 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 16:41:55,660 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 16:41:55,662 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 16:41:55,663 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 16:41:55,665 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-rb-cnstr_1-2.i [2020-09-04 16:41:55,791 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/82f7ad03c/0c0a3feaafe9428bbc4094dc87fc4ff5/FLAG0226f29f4 [2020-09-04 16:41:56,523 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 16:41:56,524 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/sll-rb-cnstr_1-2.i [2020-09-04 16:41:56,544 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/82f7ad03c/0c0a3feaafe9428bbc4094dc87fc4ff5/FLAG0226f29f4 [2020-09-04 16:41:56,734 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/82f7ad03c/0c0a3feaafe9428bbc4094dc87fc4ff5 [2020-09-04 16:41:56,754 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 16:41:56,758 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 16:41:56,761 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 16:41:56,762 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 16:41:56,767 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 16:41:56,768 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 04:41:56" (1/1) ... [2020-09-04 16:41:56,774 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56be3877 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:41:56, skipping insertion in model container [2020-09-04 16:41:56,774 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 04:41:56" (1/1) ... [2020-09-04 16:41:56,787 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 16:41:56,858 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 16:41:57,378 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 16:41:57,405 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 16:41:57,467 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 16:41:57,543 INFO L208 MainTranslator]: Completed translation [2020-09-04 16:41:57,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:41:57 WrapperNode [2020-09-04 16:41:57,545 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 16:41:57,546 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 16:41:57,546 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 16:41:57,546 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 16:41:57,564 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:41:57" (1/1) ... [2020-09-04 16:41:57,564 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:41:57" (1/1) ... [2020-09-04 16:41:57,585 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:41:57" (1/1) ... [2020-09-04 16:41:57,585 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:41:57" (1/1) ... [2020-09-04 16:41:57,604 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:41:57" (1/1) ... [2020-09-04 16:41:57,614 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:41:57" (1/1) ... [2020-09-04 16:41:57,618 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:41:57" (1/1) ... [2020-09-04 16:41:57,625 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 16:41:57,626 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 16:41:57,626 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 16:41:57,626 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 16:41:57,628 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:41:57" (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 16:41:57,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 16:41:57,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 16:41:57,720 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 16:41:57,720 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-04 16:41:57,720 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-04 16:41:57,721 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-04 16:41:57,721 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-04 16:41:57,721 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-04 16:41:57,721 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-04 16:41:57,722 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-04 16:41:57,722 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-04 16:41:57,722 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-04 16:41:57,722 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-04 16:41:57,722 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-04 16:41:57,723 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-04 16:41:57,723 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-04 16:41:57,723 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-04 16:41:57,723 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-04 16:41:57,723 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-04 16:41:57,724 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-04 16:41:57,724 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-04 16:41:57,724 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-04 16:41:57,724 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-04 16:41:57,724 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-04 16:41:57,725 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-04 16:41:57,725 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-04 16:41:57,725 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-04 16:41:57,725 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-04 16:41:57,725 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-04 16:41:57,726 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-04 16:41:57,726 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-04 16:41:57,726 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-04 16:41:57,726 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-04 16:41:57,726 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-04 16:41:57,726 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-04 16:41:57,727 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-04 16:41:57,727 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-04 16:41:57,727 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-04 16:41:57,727 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-04 16:41:57,727 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-04 16:41:57,728 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-04 16:41:57,728 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-04 16:41:57,728 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-04 16:41:57,728 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-04 16:41:57,728 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-04 16:41:57,728 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-04 16:41:57,728 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-04 16:41:57,729 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-04 16:41:57,729 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-04 16:41:57,729 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-04 16:41:57,729 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-04 16:41:57,729 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-04 16:41:57,729 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-04 16:41:57,730 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 16:41:57,730 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-04 16:41:57,730 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-04 16:41:57,730 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-04 16:41:57,730 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-04 16:41:57,731 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-04 16:41:57,731 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-04 16:41:57,731 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-04 16:41:57,731 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-04 16:41:57,731 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 16:41:57,732 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-04 16:41:57,732 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-04 16:41:57,732 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-04 16:41:57,732 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-04 16:41:57,732 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-04 16:41:57,732 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-04 16:41:57,733 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-04 16:41:57,733 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-04 16:41:57,733 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-04 16:41:57,733 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-04 16:41:57,733 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-04 16:41:57,734 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-04 16:41:57,734 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-04 16:41:57,734 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-04 16:41:57,734 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-04 16:41:57,734 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-04 16:41:57,734 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-04 16:41:57,735 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-04 16:41:57,735 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-04 16:41:57,735 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-04 16:41:57,735 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-04 16:41:57,735 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-04 16:41:57,735 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-04 16:41:57,736 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-04 16:41:57,736 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-04 16:41:57,736 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-04 16:41:57,736 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-04 16:41:57,736 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-04 16:41:57,736 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-04 16:41:57,737 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-04 16:41:57,737 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-04 16:41:57,737 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-04 16:41:57,737 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-04 16:41:57,737 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-04 16:41:57,737 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-04 16:41:57,738 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-04 16:41:57,738 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-04 16:41:57,738 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-04 16:41:57,738 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-04 16:41:57,738 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-04 16:41:57,738 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-04 16:41:57,739 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-04 16:41:57,739 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-04 16:41:57,739 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 16:41:57,739 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 16:41:57,739 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 16:41:57,739 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 16:41:57,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-04 16:41:57,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 16:41:57,740 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-04 16:41:57,740 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 16:41:57,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 16:41:57,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 16:41:57,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 16:41:58,488 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 16:41:58,488 INFO L295 CfgBuilder]: Removed 9 assume(true) statements. [2020-09-04 16:41:58,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 04:41:58 BoogieIcfgContainer [2020-09-04 16:41:58,496 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 16:41:58,497 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 16:41:58,497 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 16:41:58,502 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 16:41:58,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 04:41:56" (1/3) ... [2020-09-04 16:41:58,503 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49aa0990 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 04:41:58, skipping insertion in model container [2020-09-04 16:41:58,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:41:57" (2/3) ... [2020-09-04 16:41:58,504 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49aa0990 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 04:41:58, skipping insertion in model container [2020-09-04 16:41:58,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 04:41:58" (3/3) ... [2020-09-04 16:41:58,507 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-rb-cnstr_1-2.i [2020-09-04 16:41:58,522 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 16:41:58,536 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-09-04 16:41:58,560 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-09-04 16:41:58,591 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 16:41:58,591 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 16:41:58,592 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 16:41:58,592 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 16:41:58,592 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 16:41:58,592 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 16:41:58,592 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 16:41:58,593 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 16:41:58,616 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states. [2020-09-04 16:41:58,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-04 16:41:58,631 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:41:58,632 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:41:58,633 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:41:58,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:41:58,642 INFO L82 PathProgramCache]: Analyzing trace with hash -1234818853, now seen corresponding path program 1 times [2020-09-04 16:41:58,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:41:58,655 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1214858380] [2020-09-04 16:41:58,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:41:58,745 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:41:58,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:58,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:41:58,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:58,925 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 16:41:58,929 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1214858380] [2020-09-04 16:41:58,932 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:41:58,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 16:41:58,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949829934] [2020-09-04 16:41:58,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 16:41:58,941 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:41:58,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 16:41:58,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 16:41:58,978 INFO L87 Difference]: Start difference. First operand 92 states. Second operand 3 states. [2020-09-04 16:41:59,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:41:59,353 INFO L93 Difference]: Finished difference Result 149 states and 180 transitions. [2020-09-04 16:41:59,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 16:41:59,356 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-09-04 16:41:59,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:41:59,375 INFO L225 Difference]: With dead ends: 149 [2020-09-04 16:41:59,375 INFO L226 Difference]: Without dead ends: 69 [2020-09-04 16:41:59,382 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 16:41:59,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-09-04 16:41:59,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-09-04 16:41:59,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-09-04 16:41:59,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 72 transitions. [2020-09-04 16:41:59,456 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 72 transitions. Word has length 17 [2020-09-04 16:41:59,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:41:59,457 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 72 transitions. [2020-09-04 16:41:59,457 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 16:41:59,458 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 72 transitions. [2020-09-04 16:41:59,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-04 16:41:59,459 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:41:59,459 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:41:59,460 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 16:41:59,460 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:41:59,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:41:59,461 INFO L82 PathProgramCache]: Analyzing trace with hash -1418693445, now seen corresponding path program 1 times [2020-09-04 16:41:59,461 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:41:59,462 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [748633920] [2020-09-04 16:41:59,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:41:59,467 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:41:59,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:59,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:41:59,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:59,671 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 16:41:59,672 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [748633920] [2020-09-04 16:41:59,672 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:41:59,673 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-04 16:41:59,673 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706591277] [2020-09-04 16:41:59,674 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 16:41:59,674 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:41:59,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 16:41:59,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-04 16:41:59,675 INFO L87 Difference]: Start difference. First operand 69 states and 72 transitions. Second operand 6 states. [2020-09-04 16:41:59,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:41:59,973 INFO L93 Difference]: Finished difference Result 94 states and 99 transitions. [2020-09-04 16:41:59,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 16:41:59,974 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-09-04 16:41:59,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:41:59,976 INFO L225 Difference]: With dead ends: 94 [2020-09-04 16:41:59,977 INFO L226 Difference]: Without dead ends: 92 [2020-09-04 16:41:59,979 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 16:41:59,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-09-04 16:41:59,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 67. [2020-09-04 16:41:59,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-09-04 16:41:59,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 70 transitions. [2020-09-04 16:41:59,998 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 70 transitions. Word has length 19 [2020-09-04 16:41:59,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:41:59,999 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 70 transitions. [2020-09-04 16:41:59,999 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 16:41:59,999 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 70 transitions. [2020-09-04 16:42:00,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-04 16:42:00,000 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:42:00,001 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 16:42:00,001 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 16:42:00,001 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:42:00,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:42:00,002 INFO L82 PathProgramCache]: Analyzing trace with hash -407334014, now seen corresponding path program 1 times [2020-09-04 16:42:00,002 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:42:00,003 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1265188605] [2020-09-04 16:42:00,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:42:00,007 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:42:00,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:00,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:42:00,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:00,201 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 16:42:00,201 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1265188605] [2020-09-04 16:42:00,202 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:42:00,202 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-04 16:42:00,202 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858774538] [2020-09-04 16:42:00,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-04 16:42:00,203 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:42:00,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-04 16:42:00,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-04 16:42:00,204 INFO L87 Difference]: Start difference. First operand 67 states and 70 transitions. Second operand 8 states. [2020-09-04 16:42:00,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:42:00,615 INFO L93 Difference]: Finished difference Result 121 states and 127 transitions. [2020-09-04 16:42:00,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-04 16:42:00,618 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2020-09-04 16:42:00,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:42:00,620 INFO L225 Difference]: With dead ends: 121 [2020-09-04 16:42:00,620 INFO L226 Difference]: Without dead ends: 118 [2020-09-04 16:42:00,623 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-09-04 16:42:00,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-09-04 16:42:00,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 76. [2020-09-04 16:42:00,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-09-04 16:42:00,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 80 transitions. [2020-09-04 16:42:00,663 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 80 transitions. Word has length 23 [2020-09-04 16:42:00,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:42:00,664 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 80 transitions. [2020-09-04 16:42:00,664 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-04 16:42:00,664 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 80 transitions. [2020-09-04 16:42:00,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-04 16:42:00,667 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:42:00,667 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 16:42:00,667 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 16:42:00,667 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:42:00,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:42:00,668 INFO L82 PathProgramCache]: Analyzing trace with hash -1213824752, now seen corresponding path program 1 times [2020-09-04 16:42:00,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:42:00,668 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [307498986] [2020-09-04 16:42:00,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:42:00,680 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:42:00,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 16:42:00,723 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 16:42:00,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 16:42:00,767 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 16:42:00,835 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 16:42:00,835 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 16:42:00,836 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 16:42:00,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 04:42:00 BoogieIcfgContainer [2020-09-04 16:42:00,861 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 16:42:00,865 INFO L168 Benchmark]: Toolchain (without parser) took 4106.82 ms. Allocated memory was 135.3 MB in the beginning and 226.0 MB in the end (delta: 90.7 MB). Free memory was 97.1 MB in the beginning and 88.6 MB in the end (delta: 8.5 MB). Peak memory consumption was 99.2 MB. Max. memory is 7.1 GB. [2020-09-04 16:42:00,866 INFO L168 Benchmark]: CDTParser took 1.49 ms. Allocated memory is still 135.3 MB. Free memory was 116.6 MB in the beginning and 116.1 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-09-04 16:42:00,868 INFO L168 Benchmark]: CACSL2BoogieTranslator took 784.10 ms. Allocated memory was 135.3 MB in the beginning and 199.8 MB in the end (delta: 64.5 MB). Free memory was 97.1 MB in the beginning and 166.5 MB in the end (delta: -69.4 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. [2020-09-04 16:42:00,868 INFO L168 Benchmark]: Boogie Preprocessor took 79.77 ms. Allocated memory is still 199.8 MB. Free memory was 166.5 MB in the beginning and 164.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-09-04 16:42:00,870 INFO L168 Benchmark]: RCFGBuilder took 869.67 ms. Allocated memory is still 199.8 MB. Free memory was 163.3 MB in the beginning and 113.8 MB in the end (delta: 49.5 MB). Peak memory consumption was 49.5 MB. Max. memory is 7.1 GB. [2020-09-04 16:42:00,871 INFO L168 Benchmark]: TraceAbstraction took 2364.71 ms. Allocated memory was 199.8 MB in the beginning and 226.0 MB in the end (delta: 26.2 MB). Free memory was 112.8 MB in the beginning and 88.6 MB in the end (delta: 24.1 MB). Peak memory consumption was 50.3 MB. Max. memory is 7.1 GB. [2020-09-04 16:42:00,876 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.49 ms. Allocated memory is still 135.3 MB. Free memory was 116.6 MB in the beginning and 116.1 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 784.10 ms. Allocated memory was 135.3 MB in the beginning and 199.8 MB in the end (delta: 64.5 MB). Free memory was 97.1 MB in the beginning and 166.5 MB in the end (delta: -69.4 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 79.77 ms. Allocated memory is still 199.8 MB. Free memory was 166.5 MB in the beginning and 164.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 869.67 ms. Allocated memory is still 199.8 MB. Free memory was 163.3 MB in the beginning and 113.8 MB in the end (delta: 49.5 MB). Peak memory consumption was 49.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2364.71 ms. Allocated memory was 199.8 MB in the beginning and 226.0 MB in the end (delta: 26.2 MB). Free memory was 112.8 MB in the beginning and 88.6 MB in the end (delta: 24.1 MB). Peak memory consumption was 50.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1038]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L995] SLL* list = malloc(sizeof(SLL)); [L996] list->next = ((void*)0) [L997] list->colour = BLACK [L999] SLL* end = list; [L1002] COND FALSE !(__VERIFIER_nondet_int()) [L1023] end = ((void*)0) [L1024] end = list [L1027] COND FALSE !(!(((void*)0) != end)) [L1028] EXPR end->colour [L1028] COND FALSE !(!(BLACK == end->colour)) [L1030] COND TRUE ((void*)0) != end [L1032] EXPR end->colour [L1032] COND FALSE !(RED == end->colour) [L1038] EXPR end->next [L1038] COND TRUE !(end->next) [L1038] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 92 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.2s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 205 SDtfs, 506 SDslu, 206 SDs, 0 SdLazy, 334 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=92occurred 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, 3 MinimizatonAttempts, 67 StatesRemovedByMinimization, 2 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...