/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 0.1.25-72570d3 [2020-08-22 19:06:38,648 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 19:06:38,653 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 19:06:38,699 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 19:06:38,700 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 19:06:38,711 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 19:06:38,712 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 19:06:38,715 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 19:06:38,717 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 19:06:38,718 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 19:06:38,719 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 19:06:38,720 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 19:06:38,720 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 19:06:38,721 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 19:06:38,723 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 19:06:38,724 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 19:06:38,724 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 19:06:38,725 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 19:06:38,727 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 19:06:38,729 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 19:06:38,730 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 19:06:38,731 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 19:06:38,733 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 19:06:38,734 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 19:06:38,736 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 19:06:38,736 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 19:06:38,737 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 19:06:38,738 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 19:06:38,738 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 19:06:38,739 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 19:06:38,739 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 19:06:38,740 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 19:06:38,741 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 19:06:38,742 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 19:06:38,743 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 19:06:38,743 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 19:06:38,744 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 19:06:38,744 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 19:06:38,744 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 19:06:38,745 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 19:06:38,746 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 19:06:38,746 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 19:06:38,756 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 19:06:38,757 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 19:06:38,758 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 19:06:38,758 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 19:06:38,759 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 19:06:38,759 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 19:06:38,759 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 19:06:38,759 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 19:06:38,759 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 19:06:38,760 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 19:06:38,760 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 19:06:38,760 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 19:06:38,760 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 19:06:38,760 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 19:06:38,761 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 19:06:38,761 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 19:06:38,761 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 19:06:38,761 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 19:06:38,761 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 19:06:38,762 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 19:06:38,762 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 19:06:38,762 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 19:06:38,762 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-08-22 19:06:39,042 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 19:06:39,055 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 19:06:39,059 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 19:06:39,060 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 19:06:39,061 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 19:06:39,062 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-rb-cnstr_1-2.i [2020-08-22 19:06:39,136 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2032dea19/bbc70d75b2ad450aaa0f30edccf1001a/FLAG103fe0987 [2020-08-22 19:06:39,707 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 19:06:39,708 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-rb-cnstr_1-2.i [2020-08-22 19:06:39,726 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2032dea19/bbc70d75b2ad450aaa0f30edccf1001a/FLAG103fe0987 [2020-08-22 19:06:39,989 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2032dea19/bbc70d75b2ad450aaa0f30edccf1001a [2020-08-22 19:06:39,998 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 19:06:39,999 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 19:06:40,000 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 19:06:40,001 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 19:06:40,004 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 19:06:40,005 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 07:06:39" (1/1) ... [2020-08-22 19:06:40,008 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2db1fe4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:06:40, skipping insertion in model container [2020-08-22 19:06:40,009 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 07:06:39" (1/1) ... [2020-08-22 19:06:40,015 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 19:06:40,062 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 19:06:40,502 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 19:06:40,512 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 19:06:40,554 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 19:06:40,618 INFO L208 MainTranslator]: Completed translation [2020-08-22 19:06:40,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:06:40 WrapperNode [2020-08-22 19:06:40,618 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 19:06:40,619 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 19:06:40,619 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 19:06:40,620 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 19:06:40,634 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:06:40" (1/1) ... [2020-08-22 19:06:40,634 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:06:40" (1/1) ... [2020-08-22 19:06:40,651 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:06:40" (1/1) ... [2020-08-22 19:06:40,651 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:06:40" (1/1) ... [2020-08-22 19:06:40,668 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:06:40" (1/1) ... [2020-08-22 19:06:40,675 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:06:40" (1/1) ... [2020-08-22 19:06:40,678 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:06:40" (1/1) ... [2020-08-22 19:06:40,685 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 19:06:40,685 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 19:06:40,685 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 19:06:40,686 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 19:06:40,686 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:06:40" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 19:06:40,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 19:06:40,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 19:06:40,746 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 19:06:40,746 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-08-22 19:06:40,746 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-08-22 19:06:40,746 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-08-22 19:06:40,747 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-08-22 19:06:40,747 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-08-22 19:06:40,747 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-08-22 19:06:40,747 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-08-22 19:06:40,747 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-08-22 19:06:40,747 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-08-22 19:06:40,748 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-08-22 19:06:40,748 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-08-22 19:06:40,748 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-08-22 19:06:40,748 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-08-22 19:06:40,748 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-08-22 19:06:40,748 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-08-22 19:06:40,749 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-08-22 19:06:40,749 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-08-22 19:06:40,749 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-08-22 19:06:40,749 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-08-22 19:06:40,749 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-08-22 19:06:40,750 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-08-22 19:06:40,757 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-08-22 19:06:40,757 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-08-22 19:06:40,757 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-08-22 19:06:40,757 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-08-22 19:06:40,758 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-08-22 19:06:40,758 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-08-22 19:06:40,758 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-08-22 19:06:40,758 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-08-22 19:06:40,758 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-08-22 19:06:40,758 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-08-22 19:06:40,759 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-08-22 19:06:40,759 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-08-22 19:06:40,759 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-08-22 19:06:40,759 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-08-22 19:06:40,759 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-08-22 19:06:40,759 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-08-22 19:06:40,759 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-08-22 19:06:40,760 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-08-22 19:06:40,760 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-08-22 19:06:40,760 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-08-22 19:06:40,760 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-08-22 19:06:40,760 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-08-22 19:06:40,760 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-08-22 19:06:40,760 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-08-22 19:06:40,761 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-08-22 19:06:40,761 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-08-22 19:06:40,761 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-08-22 19:06:40,761 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-08-22 19:06:40,762 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-08-22 19:06:40,762 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 19:06:40,762 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-22 19:06:40,762 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-08-22 19:06:40,762 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 19:06:40,762 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-08-22 19:06:40,763 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-08-22 19:06:40,763 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-08-22 19:06:40,763 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-08-22 19:06:40,763 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-08-22 19:06:40,763 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 19:06:40,763 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-08-22 19:06:40,763 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-08-22 19:06:40,763 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-08-22 19:06:40,764 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-08-22 19:06:40,764 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-08-22 19:06:40,764 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-08-22 19:06:40,764 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-08-22 19:06:40,764 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-08-22 19:06:40,764 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-08-22 19:06:40,764 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-08-22 19:06:40,765 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-08-22 19:06:40,766 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-08-22 19:06:40,766 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-08-22 19:06:40,766 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-08-22 19:06:40,766 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-08-22 19:06:40,766 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-08-22 19:06:40,767 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-08-22 19:06:40,767 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-08-22 19:06:40,768 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-08-22 19:06:40,768 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-08-22 19:06:40,768 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-08-22 19:06:40,768 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-08-22 19:06:40,768 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-08-22 19:06:40,769 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-08-22 19:06:40,770 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-08-22 19:06:40,770 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-08-22 19:06:40,770 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-08-22 19:06:40,770 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-08-22 19:06:40,771 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-08-22 19:06:40,771 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-08-22 19:06:40,771 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-08-22 19:06:40,771 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-08-22 19:06:40,772 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-08-22 19:06:40,772 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-08-22 19:06:40,772 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-08-22 19:06:40,772 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-08-22 19:06:40,773 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-08-22 19:06:40,773 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-08-22 19:06:40,773 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-08-22 19:06:40,773 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-08-22 19:06:40,773 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-08-22 19:06:40,773 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-08-22 19:06:40,774 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-08-22 19:06:40,774 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 19:06:40,774 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 19:06:40,774 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 19:06:40,774 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 19:06:40,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 19:06:40,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 19:06:40,775 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 19:06:40,775 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 19:06:40,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 19:06:40,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 19:06:40,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 19:06:41,310 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 19:06:41,310 INFO L295 CfgBuilder]: Removed 9 assume(true) statements. [2020-08-22 19:06:41,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 07:06:41 BoogieIcfgContainer [2020-08-22 19:06:41,316 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 19:06:41,318 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 19:06:41,318 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 19:06:41,323 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 19:06:41,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 07:06:39" (1/3) ... [2020-08-22 19:06:41,324 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d6d5aeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 07:06:41, skipping insertion in model container [2020-08-22 19:06:41,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:06:40" (2/3) ... [2020-08-22 19:06:41,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d6d5aeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 07:06:41, skipping insertion in model container [2020-08-22 19:06:41,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 07:06:41" (3/3) ... [2020-08-22 19:06:41,329 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-rb-cnstr_1-2.i [2020-08-22 19:06:41,341 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 19:06:41,352 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-08-22 19:06:41,368 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-08-22 19:06:41,395 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 19:06:41,396 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 19:06:41,396 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-08-22 19:06:41,396 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 19:06:41,397 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 19:06:41,397 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 19:06:41,397 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 19:06:41,397 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 19:06:41,418 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states. [2020-08-22 19:06:41,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-22 19:06:41,434 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:06:41,435 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:06:41,436 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:06:41,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:06:41,446 INFO L82 PathProgramCache]: Analyzing trace with hash -1234818853, now seen corresponding path program 1 times [2020-08-22 19:06:41,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:06:41,457 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1509981983] [2020-08-22 19:06:41,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:06:41,558 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:06:41,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:06:41,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:06:41,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:06:41,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:06:41,702 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1509981983] [2020-08-22 19:06:41,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:06:41,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 19:06:41,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526820662] [2020-08-22 19:06:41,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 19:06:41,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:06:41,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 19:06:41,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 19:06:41,729 INFO L87 Difference]: Start difference. First operand 92 states. Second operand 3 states. [2020-08-22 19:06:42,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:06:42,046 INFO L93 Difference]: Finished difference Result 149 states and 180 transitions. [2020-08-22 19:06:42,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 19:06:42,048 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-08-22 19:06:42,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:06:42,068 INFO L225 Difference]: With dead ends: 149 [2020-08-22 19:06:42,068 INFO L226 Difference]: Without dead ends: 69 [2020-08-22 19:06:42,074 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 [2020-08-22 19:06:42,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-08-22 19:06:42,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-08-22 19:06:42,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-08-22 19:06:42,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 72 transitions. [2020-08-22 19:06:42,120 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 72 transitions. Word has length 17 [2020-08-22 19:06:42,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:06:42,120 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 72 transitions. [2020-08-22 19:06:42,120 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 19:06:42,121 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 72 transitions. [2020-08-22 19:06:42,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-22 19:06:42,121 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:06:42,121 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:06:42,122 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 19:06:42,122 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:06:42,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:06:42,122 INFO L82 PathProgramCache]: Analyzing trace with hash -1418693445, now seen corresponding path program 1 times [2020-08-22 19:06:42,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:06:42,123 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1144479960] [2020-08-22 19:06:42,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:06:42,130 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:06:42,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:06:42,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:06:42,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:06:42,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:06:42,239 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1144479960] [2020-08-22 19:06:42,239 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:06:42,240 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 19:06:42,240 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138252249] [2020-08-22 19:06:42,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 19:06:42,241 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:06:42,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 19:06:42,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-22 19:06:42,242 INFO L87 Difference]: Start difference. First operand 69 states and 72 transitions. Second operand 6 states. [2020-08-22 19:06:42,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:06:42,429 INFO L93 Difference]: Finished difference Result 94 states and 99 transitions. [2020-08-22 19:06:42,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 19:06:42,430 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-08-22 19:06:42,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:06:42,432 INFO L225 Difference]: With dead ends: 94 [2020-08-22 19:06:42,432 INFO L226 Difference]: Without dead ends: 92 [2020-08-22 19:06:42,434 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 [2020-08-22 19:06:42,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-08-22 19:06:42,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 67. [2020-08-22 19:06:42,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-08-22 19:06:42,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 70 transitions. [2020-08-22 19:06:42,451 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 70 transitions. Word has length 19 [2020-08-22 19:06:42,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:06:42,452 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 70 transitions. [2020-08-22 19:06:42,452 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 19:06:42,452 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 70 transitions. [2020-08-22 19:06:42,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-22 19:06:42,453 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:06:42,453 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] [2020-08-22 19:06:42,453 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 19:06:42,454 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:06:42,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:06:42,454 INFO L82 PathProgramCache]: Analyzing trace with hash -407334014, now seen corresponding path program 1 times [2020-08-22 19:06:42,454 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:06:42,455 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [146556665] [2020-08-22 19:06:42,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:06:42,459 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:06:42,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:06:42,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:06:42,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:06:42,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:06:42,607 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [146556665] [2020-08-22 19:06:42,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:06:42,609 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 19:06:42,609 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813020953] [2020-08-22 19:06:42,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 19:06:42,609 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:06:42,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 19:06:42,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 19:06:42,610 INFO L87 Difference]: Start difference. First operand 67 states and 70 transitions. Second operand 8 states. [2020-08-22 19:06:42,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:06:42,967 INFO L93 Difference]: Finished difference Result 121 states and 127 transitions. [2020-08-22 19:06:42,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 19:06:42,968 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2020-08-22 19:06:42,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:06:42,971 INFO L225 Difference]: With dead ends: 121 [2020-08-22 19:06:42,971 INFO L226 Difference]: Without dead ends: 118 [2020-08-22 19:06:42,972 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 [2020-08-22 19:06:42,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-08-22 19:06:42,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 76. [2020-08-22 19:06:42,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-08-22 19:06:43,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 80 transitions. [2020-08-22 19:06:43,004 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 80 transitions. Word has length 23 [2020-08-22 19:06:43,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:06:43,005 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 80 transitions. [2020-08-22 19:06:43,005 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 19:06:43,005 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 80 transitions. [2020-08-22 19:06:43,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-08-22 19:06:43,007 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:06:43,007 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] [2020-08-22 19:06:43,007 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 19:06:43,008 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:06:43,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:06:43,008 INFO L82 PathProgramCache]: Analyzing trace with hash -1213824752, now seen corresponding path program 1 times [2020-08-22 19:06:43,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:06:43,010 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [312639254] [2020-08-22 19:06:43,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:06:43,021 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:06:43,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 19:06:43,075 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 19:06:43,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 19:06:43,105 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 19:06:43,137 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 19:06:43,137 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 19:06:43,138 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 19:06:43,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 07:06:43 BoogieIcfgContainer [2020-08-22 19:06:43,157 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 19:06:43,160 INFO L168 Benchmark]: Toolchain (without parser) took 3159.92 ms. Allocated memory was 146.8 MB in the beginning and 235.4 MB in the end (delta: 88.6 MB). Free memory was 102.2 MB in the beginning and 89.0 MB in the end (delta: 13.1 MB). Peak memory consumption was 101.8 MB. Max. memory is 7.1 GB. [2020-08-22 19:06:43,161 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 146.8 MB. Free memory was 122.5 MB in the beginning and 122.0 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. [2020-08-22 19:06:43,162 INFO L168 Benchmark]: CACSL2BoogieTranslator took 618.43 ms. Allocated memory was 146.8 MB in the beginning and 203.9 MB in the end (delta: 57.1 MB). Free memory was 101.8 MB in the beginning and 171.3 MB in the end (delta: -69.5 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. [2020-08-22 19:06:43,163 INFO L168 Benchmark]: Boogie Preprocessor took 65.68 ms. Allocated memory is still 203.9 MB. Free memory was 171.3 MB in the beginning and 167.2 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-08-22 19:06:43,164 INFO L168 Benchmark]: RCFGBuilder took 630.59 ms. Allocated memory is still 203.9 MB. Free memory was 167.2 MB in the beginning and 117.7 MB in the end (delta: 49.4 MB). Peak memory consumption was 49.4 MB. Max. memory is 7.1 GB. [2020-08-22 19:06:43,165 INFO L168 Benchmark]: TraceAbstraction took 1839.38 ms. Allocated memory was 203.9 MB in the beginning and 235.4 MB in the end (delta: 31.5 MB). Free memory was 116.8 MB in the beginning and 89.0 MB in the end (delta: 27.7 MB). Peak memory consumption was 59.2 MB. Max. memory is 7.1 GB. [2020-08-22 19:06:43,169 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 146.8 MB. Free memory was 122.5 MB in the beginning and 122.0 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 618.43 ms. Allocated memory was 146.8 MB in the beginning and 203.9 MB in the end (delta: 57.1 MB). Free memory was 101.8 MB in the beginning and 171.3 MB in the end (delta: -69.5 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 65.68 ms. Allocated memory is still 203.9 MB. Free memory was 171.3 MB in the beginning and 167.2 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 630.59 ms. Allocated memory is still 203.9 MB. Free memory was 167.2 MB in the beginning and 117.7 MB in the end (delta: 49.4 MB). Peak memory consumption was 49.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1839.38 ms. Allocated memory was 203.9 MB in the beginning and 235.4 MB in the end (delta: 31.5 MB). Free memory was 116.8 MB in the beginning and 89.0 MB in the end (delta: 27.7 MB). Peak memory consumption was 59.2 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: 1.7s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.9s, 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, 0.4s 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: 0.0s 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...