/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-circular-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 13:25:25,634 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 13:25:25,637 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 13:25:25,657 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 13:25:25,657 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 13:25:25,659 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 13:25:25,661 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 13:25:25,675 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 13:25:25,677 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 13:25:25,678 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 13:25:25,680 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 13:25:25,681 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 13:25:25,682 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 13:25:25,683 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 13:25:25,687 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 13:25:25,689 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 13:25:25,690 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 13:25:25,691 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 13:25:25,693 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 13:25:25,695 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 13:25:25,696 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 13:25:25,697 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 13:25:25,698 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 13:25:25,699 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 13:25:25,702 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-07 13:25:25,702 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-07 13:25:25,702 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-07 13:25:25,703 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-07 13:25:25,703 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-07 13:25:25,704 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-07 13:25:25,705 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-07 13:25:25,705 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-07 13:25:25,706 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-07 13:25:25,707 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-07 13:25:25,708 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-07 13:25:25,708 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-07 13:25:25,709 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-07 13:25:25,709 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-07 13:25:25,709 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 13:25:25,710 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 13:25:25,711 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 13:25:25,712 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-07 13:25:25,721 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 13:25:25,722 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 13:25:25,723 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 13:25:25,723 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 13:25:25,723 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 13:25:25,724 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 13:25:25,724 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 13:25:25,724 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 13:25:25,724 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 13:25:25,724 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 13:25:25,725 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 13:25:25,725 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 13:25:25,725 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 13:25:25,725 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 13:25:25,725 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 13:25:25,726 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-07 13:25:25,726 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 13:25:25,727 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 13:25:25,727 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 13:25:25,727 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 13:25:25,727 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-07 13:25:25,728 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 13:25:25,728 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-07 13:25:26,016 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 13:25:26,030 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 13:25:26,034 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 13:25:26,036 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 13:25:26,036 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 13:25:26,037 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-circular-2.i [2020-07-07 13:25:26,110 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74c9371ed/b1406dc5169441179945e049191b1e66/FLAG588b8f911 [2020-07-07 13:25:26,650 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 13:25:26,651 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-circular-2.i [2020-07-07 13:25:26,667 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74c9371ed/b1406dc5169441179945e049191b1e66/FLAG588b8f911 [2020-07-07 13:25:26,918 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74c9371ed/b1406dc5169441179945e049191b1e66 [2020-07-07 13:25:26,928 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 13:25:26,930 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 13:25:26,931 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 13:25:26,932 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 13:25:26,936 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 13:25:26,937 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:25:26" (1/1) ... [2020-07-07 13:25:26,940 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e8af5bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:26, skipping insertion in model container [2020-07-07 13:25:26,940 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:25:26" (1/1) ... [2020-07-07 13:25:26,949 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 13:25:26,997 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 13:25:27,473 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:25:27,488 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 13:25:27,556 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:25:27,609 INFO L208 MainTranslator]: Completed translation [2020-07-07 13:25:27,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:27 WrapperNode [2020-07-07 13:25:27,609 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 13:25:27,610 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 13:25:27,610 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 13:25:27,610 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 13:25:27,625 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:27" (1/1) ... [2020-07-07 13:25:27,625 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:27" (1/1) ... [2020-07-07 13:25:27,642 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:27" (1/1) ... [2020-07-07 13:25:27,642 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:27" (1/1) ... [2020-07-07 13:25:27,658 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:27" (1/1) ... [2020-07-07 13:25:27,664 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:27" (1/1) ... [2020-07-07 13:25:27,668 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:27" (1/1) ... [2020-07-07 13:25:27,675 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 13:25:27,675 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 13:25:27,675 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 13:25:27,676 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 13:25:27,677 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:27" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 13:25:27,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 13:25:27,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 13:25:27,757 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 13:25:27,758 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-07 13:25:27,759 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-07 13:25:27,759 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-07 13:25:27,759 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-07 13:25:27,759 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-07 13:25:27,759 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-07 13:25:27,759 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-07 13:25:27,760 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-07 13:25:27,761 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-07 13:25:27,761 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-07 13:25:27,761 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-07 13:25:27,762 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-07 13:25:27,762 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-07 13:25:27,762 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-07 13:25:27,763 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-07 13:25:27,763 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-07 13:25:27,763 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-07 13:25:27,764 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-07 13:25:27,764 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-07 13:25:27,767 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-07 13:25:27,767 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-07 13:25:27,767 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-07 13:25:27,768 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-07 13:25:27,768 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-07 13:25:27,768 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-07 13:25:27,768 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-07 13:25:27,768 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-07 13:25:27,768 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-07 13:25:27,768 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-07 13:25:27,769 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-07 13:25:27,769 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-07 13:25:27,769 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-07 13:25:27,769 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-07 13:25:27,769 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-07 13:25:27,769 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-07 13:25:27,769 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-07 13:25:27,769 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-07 13:25:27,770 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-07 13:25:27,770 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-07 13:25:27,770 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-07 13:25:27,770 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-07 13:25:27,770 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-07 13:25:27,770 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-07 13:25:27,771 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-07 13:25:27,771 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-07 13:25:27,771 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-07 13:25:27,771 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-07 13:25:27,771 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-07 13:25:27,772 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-07 13:25:27,772 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-07 13:25:27,772 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-07 13:25:27,773 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-07 13:25:27,773 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-07 13:25:27,773 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-07 13:25:27,773 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-07 13:25:27,773 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-07 13:25:27,773 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-07 13:25:27,773 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-07 13:25:27,774 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-07-07 13:25:27,774 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-07 13:25:27,774 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-07 13:25:27,774 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-07-07 13:25:27,775 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-07 13:25:27,775 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-07 13:25:27,775 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-07-07 13:25:27,775 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-07 13:25:27,775 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-07 13:25:27,775 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-07 13:25:27,776 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-07 13:25:27,776 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-07 13:25:27,776 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-07 13:25:27,777 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-07 13:25:27,777 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-07 13:25:27,777 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-07 13:25:27,778 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-07 13:25:27,778 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-07 13:25:27,778 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-07 13:25:27,779 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-07 13:25:27,779 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-07 13:25:27,780 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-07 13:25:27,780 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-07 13:25:27,780 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-07 13:25:27,780 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-07 13:25:27,781 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-07 13:25:27,781 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-07 13:25:27,781 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-07 13:25:27,782 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-07 13:25:27,782 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-07 13:25:27,782 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-07 13:25:27,782 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-07 13:25:27,782 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-07 13:25:27,782 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-07 13:25:27,782 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-07 13:25:27,783 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-07 13:25:27,783 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-07 13:25:27,783 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-07 13:25:27,784 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-07 13:25:27,784 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-07 13:25:27,784 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-07 13:25:27,784 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-07 13:25:27,784 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-07 13:25:27,784 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-07 13:25:27,784 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-07 13:25:27,785 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 13:25:27,785 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 13:25:27,785 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 13:25:27,785 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-07 13:25:27,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-07 13:25:27,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-07 13:25:27,785 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-07 13:25:27,786 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-07 13:25:27,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-07 13:25:27,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 13:25:27,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 13:25:28,384 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 13:25:28,385 INFO L295 CfgBuilder]: Removed 9 assume(true) statements. [2020-07-07 13:25:28,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:25:28 BoogieIcfgContainer [2020-07-07 13:25:28,400 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 13:25:28,402 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 13:25:28,402 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 13:25:28,407 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 13:25:28,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 01:25:26" (1/3) ... [2020-07-07 13:25:28,408 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@728344d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:25:28, skipping insertion in model container [2020-07-07 13:25:28,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:27" (2/3) ... [2020-07-07 13:25:28,409 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@728344d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:25:28, skipping insertion in model container [2020-07-07 13:25:28,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:25:28" (3/3) ... [2020-07-07 13:25:28,412 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-circular-2.i [2020-07-07 13:25:28,425 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-07 13:25:28,437 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-07-07 13:25:28,452 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-07-07 13:25:28,479 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 13:25:28,479 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 13:25:28,479 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-07 13:25:28,479 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 13:25:28,480 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 13:25:28,481 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 13:25:28,481 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 13:25:28,481 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 13:25:28,511 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states. [2020-07-07 13:25:28,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-07 13:25:28,529 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:25:28,530 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] [2020-07-07 13:25:28,532 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:25:28,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:25:28,544 INFO L82 PathProgramCache]: Analyzing trace with hash -976698803, now seen corresponding path program 1 times [2020-07-07 13:25:28,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:25:28,557 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [561274733] [2020-07-07 13:25:28,567 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:25:28,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:28,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:28,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:25:28,806 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:25:28,808 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [561274733] [2020-07-07 13:25:28,810 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:25:28,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 13:25:28,812 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131620033] [2020-07-07 13:25:28,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 13:25:28,819 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:25:28,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 13:25:28,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:25:28,841 INFO L87 Difference]: Start difference. First operand 93 states. Second operand 3 states. [2020-07-07 13:25:29,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:25:29,106 INFO L93 Difference]: Finished difference Result 173 states and 209 transitions. [2020-07-07 13:25:29,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 13:25:29,108 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-07-07 13:25:29,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:25:29,121 INFO L225 Difference]: With dead ends: 173 [2020-07-07 13:25:29,121 INFO L226 Difference]: Without dead ends: 74 [2020-07-07 13:25:29,126 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:25:29,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-07-07 13:25:29,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-07-07 13:25:29,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-07-07 13:25:29,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 79 transitions. [2020-07-07 13:25:29,178 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 79 transitions. Word has length 20 [2020-07-07 13:25:29,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:25:29,179 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 79 transitions. [2020-07-07 13:25:29,179 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 13:25:29,179 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 79 transitions. [2020-07-07 13:25:29,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-07 13:25:29,180 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:25:29,180 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:25:29,181 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 13:25:29,181 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:25:29,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:25:29,181 INFO L82 PathProgramCache]: Analyzing trace with hash 1430822134, now seen corresponding path program 1 times [2020-07-07 13:25:29,182 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:25:29,182 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [239092231] [2020-07-07 13:25:29,182 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:25:29,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:29,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:29,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:25:29,476 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:25:29,476 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [239092231] [2020-07-07 13:25:29,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:25:29,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-07-07 13:25:29,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072923055] [2020-07-07 13:25:29,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-07 13:25:29,478 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:25:29,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-07 13:25:29,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-07-07 13:25:29,479 INFO L87 Difference]: Start difference. First operand 74 states and 79 transitions. Second operand 10 states. [2020-07-07 13:25:29,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:25:29,931 INFO L93 Difference]: Finished difference Result 149 states and 157 transitions. [2020-07-07 13:25:29,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-07 13:25:29,932 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 22 [2020-07-07 13:25:29,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:25:29,934 INFO L225 Difference]: With dead ends: 149 [2020-07-07 13:25:29,935 INFO L226 Difference]: Without dead ends: 147 [2020-07-07 13:25:29,936 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2020-07-07 13:25:29,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-07-07 13:25:29,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 82. [2020-07-07 13:25:29,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-07-07 13:25:29,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 88 transitions. [2020-07-07 13:25:29,959 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 88 transitions. Word has length 22 [2020-07-07 13:25:29,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:25:29,960 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 88 transitions. [2020-07-07 13:25:29,960 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-07 13:25:29,960 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 88 transitions. [2020-07-07 13:25:29,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-07 13:25:29,961 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:25:29,961 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:25:29,962 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 13:25:29,962 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:25:29,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:25:29,962 INFO L82 PathProgramCache]: Analyzing trace with hash 340604940, now seen corresponding path program 1 times [2020-07-07 13:25:29,963 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:25:29,963 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [468219561] [2020-07-07 13:25:29,963 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:25:29,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:30,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:30,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:25:30,080 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:25:30,080 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [468219561] [2020-07-07 13:25:30,080 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:25:30,081 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-07 13:25:30,081 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757639305] [2020-07-07 13:25:30,081 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-07 13:25:30,082 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:25:30,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-07 13:25:30,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-07-07 13:25:30,085 INFO L87 Difference]: Start difference. First operand 82 states and 88 transitions. Second operand 7 states. [2020-07-07 13:25:30,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:25:30,420 INFO L93 Difference]: Finished difference Result 118 states and 125 transitions. [2020-07-07 13:25:30,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-07 13:25:30,421 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2020-07-07 13:25:30,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:25:30,423 INFO L225 Difference]: With dead ends: 118 [2020-07-07 13:25:30,423 INFO L226 Difference]: Without dead ends: 116 [2020-07-07 13:25:30,423 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-07-07 13:25:30,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-07-07 13:25:30,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 80. [2020-07-07 13:25:30,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-07-07 13:25:30,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 86 transitions. [2020-07-07 13:25:30,440 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 86 transitions. Word has length 28 [2020-07-07 13:25:30,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:25:30,441 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 86 transitions. [2020-07-07 13:25:30,441 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-07 13:25:30,441 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 86 transitions. [2020-07-07 13:25:30,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-07-07 13:25:30,443 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:25:30,443 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:25:30,443 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-07 13:25:30,443 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:25:30,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:25:30,444 INFO L82 PathProgramCache]: Analyzing trace with hash 1933129776, now seen corresponding path program 1 times [2020-07-07 13:25:30,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:25:30,445 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [808079805] [2020-07-07 13:25:30,445 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:25:30,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:30,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:30,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:25:30,514 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:25:30,514 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [808079805] [2020-07-07 13:25:30,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:25:30,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 13:25:30,515 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256961097] [2020-07-07 13:25:30,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 13:25:30,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:25:30,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 13:25:30,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 13:25:30,517 INFO L87 Difference]: Start difference. First operand 80 states and 86 transitions. Second operand 4 states. [2020-07-07 13:25:30,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:25:30,650 INFO L93 Difference]: Finished difference Result 195 states and 210 transitions. [2020-07-07 13:25:30,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-07 13:25:30,651 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-07-07 13:25:30,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:25:30,652 INFO L225 Difference]: With dead ends: 195 [2020-07-07 13:25:30,652 INFO L226 Difference]: Without dead ends: 136 [2020-07-07 13:25:30,654 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 13:25:30,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-07-07 13:25:30,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 97. [2020-07-07 13:25:30,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-07-07 13:25:30,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 105 transitions. [2020-07-07 13:25:30,673 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 105 transitions. Word has length 33 [2020-07-07 13:25:30,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:25:30,673 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 105 transitions. [2020-07-07 13:25:30,674 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 13:25:30,674 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 105 transitions. [2020-07-07 13:25:30,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-07-07 13:25:30,675 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:25:30,675 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:25:30,676 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-07 13:25:30,676 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:25:30,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:25:30,676 INFO L82 PathProgramCache]: Analyzing trace with hash 1127481847, now seen corresponding path program 1 times [2020-07-07 13:25:30,677 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:25:30,677 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [100353287] [2020-07-07 13:25:30,677 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:25:30,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:31,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:31,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:25:31,073 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:25:31,073 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [100353287] [2020-07-07 13:25:31,074 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:25:31,074 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-07-07 13:25:31,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904189397] [2020-07-07 13:25:31,075 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-07 13:25:31,075 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:25:31,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-07 13:25:31,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-07-07 13:25:31,076 INFO L87 Difference]: Start difference. First operand 97 states and 105 transitions. Second operand 14 states. [2020-07-07 13:25:31,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:25:31,945 INFO L93 Difference]: Finished difference Result 190 states and 201 transitions. [2020-07-07 13:25:31,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-07-07 13:25:31,945 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 37 [2020-07-07 13:25:31,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:25:31,947 INFO L225 Difference]: With dead ends: 190 [2020-07-07 13:25:31,947 INFO L226 Difference]: Without dead ends: 160 [2020-07-07 13:25:31,948 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=220, Invalid=710, Unknown=0, NotChecked=0, Total=930 [2020-07-07 13:25:31,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-07-07 13:25:31,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 105. [2020-07-07 13:25:31,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-07-07 13:25:31,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 113 transitions. [2020-07-07 13:25:31,986 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 113 transitions. Word has length 37 [2020-07-07 13:25:31,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:25:31,989 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 113 transitions. [2020-07-07 13:25:31,989 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-07 13:25:31,989 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 113 transitions. [2020-07-07 13:25:31,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-07-07 13:25:31,995 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:25:31,996 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:25:31,996 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-07 13:25:31,996 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:25:31,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:25:31,997 INFO L82 PathProgramCache]: Analyzing trace with hash 821991267, now seen corresponding path program 1 times [2020-07-07 13:25:31,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:25:31,997 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1815642759] [2020-07-07 13:25:31,998 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:25:32,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:32,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:32,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:25:32,325 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:25:32,326 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1815642759] [2020-07-07 13:25:32,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:25:32,326 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-07-07 13:25:32,327 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704080591] [2020-07-07 13:25:32,327 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-07 13:25:32,327 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:25:32,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-07 13:25:32,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-07-07 13:25:32,328 INFO L87 Difference]: Start difference. First operand 105 states and 113 transitions. Second operand 14 states. [2020-07-07 13:25:33,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:25:33,105 INFO L93 Difference]: Finished difference Result 210 states and 223 transitions. [2020-07-07 13:25:33,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-07 13:25:33,106 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 37 [2020-07-07 13:25:33,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:25:33,108 INFO L225 Difference]: With dead ends: 210 [2020-07-07 13:25:33,108 INFO L226 Difference]: Without dead ends: 208 [2020-07-07 13:25:33,111 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=132, Invalid=518, Unknown=0, NotChecked=0, Total=650 [2020-07-07 13:25:33,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-07-07 13:25:33,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 134. [2020-07-07 13:25:33,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-07-07 13:25:33,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 145 transitions. [2020-07-07 13:25:33,148 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 145 transitions. Word has length 37 [2020-07-07 13:25:33,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:25:33,148 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 145 transitions. [2020-07-07 13:25:33,148 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-07 13:25:33,149 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 145 transitions. [2020-07-07 13:25:33,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-07-07 13:25:33,150 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:25:33,150 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:25:33,150 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-07 13:25:33,151 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:25:33,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:25:33,151 INFO L82 PathProgramCache]: Analyzing trace with hash 1168005107, now seen corresponding path program 1 times [2020-07-07 13:25:33,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:25:33,152 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1937976116] [2020-07-07 13:25:33,152 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:25:33,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 13:25:33,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 13:25:33,229 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:25:33,230 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-07 13:25:33,230 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-07 13:25:33,230 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-07 13:25:33,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 01:25:33 BoogieIcfgContainer [2020-07-07 13:25:33,250 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 13:25:33,253 INFO L168 Benchmark]: Toolchain (without parser) took 6322.20 ms. Allocated memory was 144.7 MB in the beginning and 288.4 MB in the end (delta: 143.7 MB). Free memory was 100.2 MB in the beginning and 254.7 MB in the end (delta: -154.5 MB). Peak memory consumption was 155.0 MB. Max. memory is 7.1 GB. [2020-07-07 13:25:33,253 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 144.7 MB. Free memory is still 119.7 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-07 13:25:33,255 INFO L168 Benchmark]: CACSL2BoogieTranslator took 678.31 ms. Allocated memory was 144.7 MB in the beginning and 202.9 MB in the end (delta: 58.2 MB). Free memory was 100.2 MB in the beginning and 170.8 MB in the end (delta: -70.6 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. [2020-07-07 13:25:33,255 INFO L168 Benchmark]: Boogie Preprocessor took 64.72 ms. Allocated memory is still 202.9 MB. Free memory was 170.8 MB in the beginning and 167.6 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. [2020-07-07 13:25:33,256 INFO L168 Benchmark]: RCFGBuilder took 725.58 ms. Allocated memory is still 202.9 MB. Free memory was 167.6 MB in the beginning and 118.4 MB in the end (delta: 49.1 MB). Peak memory consumption was 49.1 MB. Max. memory is 7.1 GB. [2020-07-07 13:25:33,257 INFO L168 Benchmark]: TraceAbstraction took 4847.79 ms. Allocated memory was 202.9 MB in the beginning and 288.4 MB in the end (delta: 85.5 MB). Free memory was 118.4 MB in the beginning and 254.7 MB in the end (delta: -136.3 MB). Peak memory consumption was 115.0 MB. Max. memory is 7.1 GB. [2020-07-07 13:25:33,261 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 144.7 MB. Free memory is still 119.7 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 678.31 ms. Allocated memory was 144.7 MB in the beginning and 202.9 MB in the end (delta: 58.2 MB). Free memory was 100.2 MB in the beginning and 170.8 MB in the end (delta: -70.6 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 64.72 ms. Allocated memory is still 202.9 MB. Free memory was 170.8 MB in the beginning and 167.6 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 725.58 ms. Allocated memory is still 202.9 MB. Free memory was 167.6 MB in the beginning and 118.4 MB in the end (delta: 49.1 MB). Peak memory consumption was 49.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4847.79 ms. Allocated memory was 202.9 MB in the beginning and 288.4 MB in the end (delta: 85.5 MB). Free memory was 118.4 MB in the beginning and 254.7 MB in the end (delta: -136.3 MB). Peak memory consumption was 115.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1021]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L985] SLL* head = malloc(sizeof(SLL)); [L986] head->next = head [L987] head->data = 0 [L989] SLL* x = head; [L990] int state = 1; [L993] COND FALSE !(__VERIFIER_nondet_int()) [L1014] x->data = state [L1016] EXPR head->next [L1016] x = head->next [L1017] COND FALSE !(!(((void*)0) != x)) [L1019] EXPR x->data [L1019] COND TRUE x->data != 0 [L1021] EXPR x->next [L1021] EXPR x->next->data [L1021] EXPR x->next->data != 0 && x->data > x->next->data [L1021] EXPR x->data [L1021] EXPR x->next [L1021] EXPR x->next->data [L1021] EXPR x->next->data != 0 && x->data > x->next->data [L1021] COND TRUE !(x->next->data != 0 && x->data > x->next->data) [L1021] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 93 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.7s, OverallIterations: 7, TraceHistogramMax: 2, AutomataDifference: 2.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 499 SDtfs, 1222 SDslu, 1876 SDs, 0 SdLazy, 1222 SolverSat, 76 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 107 GetRequests, 21 SyntacticMatches, 4 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=134occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 269 StatesRemovedByMinimization, 5 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...