/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 --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/forester-heap/dll-sorted-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 22:20:30,364 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 22:20:30,368 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 22:20:30,411 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 22:20:30,411 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 22:20:30,420 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 22:20:30,424 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 22:20:30,428 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 22:20:30,431 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 22:20:30,434 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 22:20:30,435 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 22:20:30,436 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 22:20:30,436 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 22:20:30,439 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 22:20:30,442 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 22:20:30,444 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 22:20:30,446 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 22:20:30,447 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 22:20:30,448 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 22:20:30,457 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 22:20:30,459 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 22:20:30,460 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 22:20:30,461 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 22:20:30,462 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 22:20:30,474 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 22:20:30,475 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 22:20:30,480 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 22:20:30,481 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 22:20:30,481 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 22:20:30,482 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 22:20:30,482 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 22:20:30,486 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 22:20:30,487 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 22:20:30,490 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 22:20:30,492 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 22:20:30,492 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 22:20:30,492 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 22:20:30,493 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 22:20:30,493 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 22:20:30,494 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 22:20:30,495 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 22:20:30,495 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 22:20:30,509 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 22:20:30,510 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 22:20:30,512 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 22:20:30,512 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 22:20:30,512 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 22:20:30,513 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 22:20:30,513 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 22:20:30,513 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 22:20:30,513 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 22:20:30,513 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 22:20:30,514 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 22:20:30,515 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 22:20:30,515 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 22:20:30,515 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 22:20:30,516 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 22:20:30,516 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 22:20:30,516 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 22:20:30,516 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 22:20:30,516 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 22:20:30,517 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 22:20:30,517 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 22:20:30,517 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 22:20:30,517 INFO L138 SettingsManager]: * Use separate solver for trace checks=false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-08-22 22:20:30,894 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 22:20:30,916 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 22:20:30,920 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 22:20:30,923 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 22:20:30,923 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 22:20:30,924 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-sorted-1.i [2020-08-22 22:20:30,993 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee48bce06/6ba466c6f48147989da4e23d9c5f00ba/FLAG58eda4617 [2020-08-22 22:20:31,484 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 22:20:31,485 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-sorted-1.i [2020-08-22 22:20:31,502 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee48bce06/6ba466c6f48147989da4e23d9c5f00ba/FLAG58eda4617 [2020-08-22 22:20:31,834 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee48bce06/6ba466c6f48147989da4e23d9c5f00ba [2020-08-22 22:20:31,842 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 22:20:31,844 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 22:20:31,845 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 22:20:31,845 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 22:20:31,848 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 22:20:31,849 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 10:20:31" (1/1) ... [2020-08-22 22:20:31,852 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@471ad049 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:20:31, skipping insertion in model container [2020-08-22 22:20:31,853 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 10:20:31" (1/1) ... [2020-08-22 22:20:31,862 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 22:20:31,933 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 22:20:32,496 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 22:20:32,508 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 22:20:32,554 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 22:20:32,615 INFO L208 MainTranslator]: Completed translation [2020-08-22 22:20:32,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:20:32 WrapperNode [2020-08-22 22:20:32,616 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 22:20:32,617 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 22:20:32,617 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 22:20:32,617 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 22:20:32,637 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:20:32" (1/1) ... [2020-08-22 22:20:32,637 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:20:32" (1/1) ... [2020-08-22 22:20:32,658 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:20:32" (1/1) ... [2020-08-22 22:20:32,659 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:20:32" (1/1) ... [2020-08-22 22:20:32,683 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:20:32" (1/1) ... [2020-08-22 22:20:32,693 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:20:32" (1/1) ... [2020-08-22 22:20:32,697 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:20:32" (1/1) ... [2020-08-22 22:20:32,704 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 22:20:32,705 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 22:20:32,705 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 22:20:32,706 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 22:20:32,707 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:20:32" (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 22:20:32,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 22:20:32,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 22:20:32,779 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 22:20:32,779 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-08-22 22:20:32,779 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-08-22 22:20:32,779 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-08-22 22:20:32,780 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-08-22 22:20:32,780 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-08-22 22:20:32,780 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-08-22 22:20:32,780 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-08-22 22:20:32,780 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-08-22 22:20:32,780 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-08-22 22:20:32,781 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-08-22 22:20:32,781 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-08-22 22:20:32,781 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-08-22 22:20:32,781 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-08-22 22:20:32,781 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-08-22 22:20:32,782 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-08-22 22:20:32,782 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-08-22 22:20:32,782 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-08-22 22:20:32,782 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-08-22 22:20:32,783 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-08-22 22:20:32,783 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-08-22 22:20:32,783 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-08-22 22:20:32,783 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-08-22 22:20:32,783 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-08-22 22:20:32,783 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-08-22 22:20:32,784 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-08-22 22:20:32,784 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-08-22 22:20:32,784 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-08-22 22:20:32,784 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-08-22 22:20:32,784 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-08-22 22:20:32,784 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-08-22 22:20:32,785 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-08-22 22:20:32,785 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-08-22 22:20:32,785 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-08-22 22:20:32,785 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-08-22 22:20:32,785 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-08-22 22:20:32,785 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-08-22 22:20:32,785 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-08-22 22:20:32,786 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-08-22 22:20:32,786 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-08-22 22:20:32,786 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-08-22 22:20:32,786 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-08-22 22:20:32,786 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-08-22 22:20:32,786 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-08-22 22:20:32,786 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-08-22 22:20:32,786 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-08-22 22:20:32,787 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-08-22 22:20:32,787 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-08-22 22:20:32,787 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-08-22 22:20:32,787 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-08-22 22:20:32,787 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-08-22 22:20:32,787 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 22:20:32,787 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-22 22:20:32,788 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-08-22 22:20:32,788 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 22:20:32,788 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-08-22 22:20:32,788 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-08-22 22:20:32,788 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-08-22 22:20:32,788 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-08-22 22:20:32,788 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-08-22 22:20:32,789 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 22:20:32,789 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-08-22 22:20:32,789 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-08-22 22:20:32,789 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-08-22 22:20:32,789 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-08-22 22:20:32,789 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-08-22 22:20:32,789 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-08-22 22:20:32,790 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-08-22 22:20:32,790 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-08-22 22:20:32,790 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-08-22 22:20:32,790 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-08-22 22:20:32,790 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-08-22 22:20:32,790 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-08-22 22:20:32,790 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-08-22 22:20:32,791 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-08-22 22:20:32,791 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-08-22 22:20:32,791 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-08-22 22:20:32,791 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-08-22 22:20:32,791 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-08-22 22:20:32,791 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-08-22 22:20:32,792 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-08-22 22:20:32,792 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-08-22 22:20:32,792 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-08-22 22:20:32,792 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-08-22 22:20:32,792 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-08-22 22:20:32,792 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-08-22 22:20:32,792 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-08-22 22:20:32,793 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-08-22 22:20:32,793 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-08-22 22:20:32,793 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-08-22 22:20:32,793 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-08-22 22:20:32,793 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-08-22 22:20:32,793 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-08-22 22:20:32,794 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-08-22 22:20:32,794 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-08-22 22:20:32,794 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-08-22 22:20:32,794 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-08-22 22:20:32,794 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-08-22 22:20:32,794 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-08-22 22:20:32,794 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-08-22 22:20:32,795 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-08-22 22:20:32,795 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-08-22 22:20:32,795 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-08-22 22:20:32,795 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-08-22 22:20:32,795 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 22:20:32,795 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 22:20:32,795 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 22:20:32,795 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 22:20:32,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 22:20:32,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 22:20:32,796 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 22:20:32,796 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 22:20:32,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 22:20:32,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 22:20:32,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 22:20:33,525 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 22:20:33,525 INFO L295 CfgBuilder]: Removed 18 assume(true) statements. [2020-08-22 22:20:33,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 10:20:33 BoogieIcfgContainer [2020-08-22 22:20:33,531 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 22:20:33,533 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 22:20:33,533 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 22:20:33,536 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 22:20:33,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 10:20:31" (1/3) ... [2020-08-22 22:20:33,538 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48325456 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 10:20:33, skipping insertion in model container [2020-08-22 22:20:33,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:20:32" (2/3) ... [2020-08-22 22:20:33,538 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48325456 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 10:20:33, skipping insertion in model container [2020-08-22 22:20:33,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 10:20:33" (3/3) ... [2020-08-22 22:20:33,541 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-sorted-1.i [2020-08-22 22:20:33,553 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 22:20:33,562 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-08-22 22:20:33,577 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-08-22 22:20:33,600 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 22:20:33,600 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 22:20:33,600 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 22:20:33,600 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 22:20:33,601 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 22:20:33,601 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 22:20:33,601 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 22:20:33,601 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 22:20:33,623 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states. [2020-08-22 22:20:33,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-22 22:20:33,634 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:20:33,635 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:20:33,636 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:20:33,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:20:33,642 INFO L82 PathProgramCache]: Analyzing trace with hash 815166367, now seen corresponding path program 1 times [2020-08-22 22:20:33,650 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:20:33,650 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1890603966] [2020-08-22 22:20:33,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:20:33,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:33,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:20:33,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:33,872 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 22:20:33,873 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1890603966] [2020-08-22 22:20:33,875 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:20:33,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 22:20:33,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053524590] [2020-08-22 22:20:33,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 22:20:33,883 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:20:33,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 22:20:33,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 22:20:33,906 INFO L87 Difference]: Start difference. First operand 156 states. Second operand 3 states. [2020-08-22 22:20:34,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:20:34,281 INFO L93 Difference]: Finished difference Result 277 states and 343 transitions. [2020-08-22 22:20:34,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 22:20:34,283 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-08-22 22:20:34,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:20:34,296 INFO L225 Difference]: With dead ends: 277 [2020-08-22 22:20:34,297 INFO L226 Difference]: Without dead ends: 144 [2020-08-22 22:20:34,302 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 22:20:34,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-08-22 22:20:34,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2020-08-22 22:20:34,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-08-22 22:20:34,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 154 transitions. [2020-08-22 22:20:34,360 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 154 transitions. Word has length 18 [2020-08-22 22:20:34,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:20:34,361 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 154 transitions. [2020-08-22 22:20:34,361 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 22:20:34,361 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 154 transitions. [2020-08-22 22:20:34,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-22 22:20:34,362 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:20:34,362 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] [2020-08-22 22:20:34,362 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 22:20:34,363 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:20:34,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:20:34,363 INFO L82 PathProgramCache]: Analyzing trace with hash 626661666, now seen corresponding path program 1 times [2020-08-22 22:20:34,364 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:20:34,364 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1285561606] [2020-08-22 22:20:34,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:20:34,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:34,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:20:34,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:34,440 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 22:20:34,441 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1285561606] [2020-08-22 22:20:34,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:20:34,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 22:20:34,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711271798] [2020-08-22 22:20:34,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 22:20:34,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:20:34,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 22:20:34,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 22:20:34,445 INFO L87 Difference]: Start difference. First operand 144 states and 154 transitions. Second operand 4 states. [2020-08-22 22:20:34,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:20:34,757 INFO L93 Difference]: Finished difference Result 295 states and 318 transitions. [2020-08-22 22:20:34,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 22:20:34,758 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-08-22 22:20:34,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:20:34,760 INFO L225 Difference]: With dead ends: 295 [2020-08-22 22:20:34,761 INFO L226 Difference]: Without dead ends: 165 [2020-08-22 22:20:34,763 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 [2020-08-22 22:20:34,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-08-22 22:20:34,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 160. [2020-08-22 22:20:34,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-08-22 22:20:34,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 171 transitions. [2020-08-22 22:20:34,785 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 171 transitions. Word has length 20 [2020-08-22 22:20:34,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:20:34,786 INFO L479 AbstractCegarLoop]: Abstraction has 160 states and 171 transitions. [2020-08-22 22:20:34,786 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 22:20:34,786 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 171 transitions. [2020-08-22 22:20:34,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-08-22 22:20:34,787 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:20:34,788 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, 1] [2020-08-22 22:20:34,788 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 22:20:34,788 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:20:34,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:20:34,789 INFO L82 PathProgramCache]: Analyzing trace with hash 1840738898, now seen corresponding path program 1 times [2020-08-22 22:20:34,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:20:34,789 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [929213419] [2020-08-22 22:20:34,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:20:34,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:34,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:20:34,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:34,956 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-22 22:20:34,959 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [929213419] [2020-08-22 22:20:34,959 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:20:34,960 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 22:20:34,962 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574494083] [2020-08-22 22:20:34,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 22:20:34,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:20:34,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 22:20:34,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-22 22:20:34,963 INFO L87 Difference]: Start difference. First operand 160 states and 171 transitions. Second operand 6 states. [2020-08-22 22:20:35,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:20:35,382 INFO L93 Difference]: Finished difference Result 262 states and 280 transitions. [2020-08-22 22:20:35,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 22:20:35,382 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-08-22 22:20:35,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:20:35,385 INFO L225 Difference]: With dead ends: 262 [2020-08-22 22:20:35,385 INFO L226 Difference]: Without dead ends: 260 [2020-08-22 22:20:35,386 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 22:20:35,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2020-08-22 22:20:35,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 158. [2020-08-22 22:20:35,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-08-22 22:20:35,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 169 transitions. [2020-08-22 22:20:35,427 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 169 transitions. Word has length 38 [2020-08-22 22:20:35,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:20:35,428 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 169 transitions. [2020-08-22 22:20:35,429 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 22:20:35,429 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 169 transitions. [2020-08-22 22:20:35,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-22 22:20:35,437 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:20:35,437 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, 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 22:20:35,437 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 22:20:35,443 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:20:35,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:20:35,444 INFO L82 PathProgramCache]: Analyzing trace with hash 24683595, now seen corresponding path program 1 times [2020-08-22 22:20:35,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:20:35,446 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1282883761] [2020-08-22 22:20:35,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:20:35,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:35,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:20:35,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:35,568 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-22 22:20:35,568 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1282883761] [2020-08-22 22:20:35,569 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:20:35,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 22:20:35,569 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860307843] [2020-08-22 22:20:35,570 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 22:20:35,570 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:20:35,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 22:20:35,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 22:20:35,571 INFO L87 Difference]: Start difference. First operand 158 states and 169 transitions. Second operand 4 states. [2020-08-22 22:20:35,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:20:35,792 INFO L93 Difference]: Finished difference Result 244 states and 261 transitions. [2020-08-22 22:20:35,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 22:20:35,793 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 61 [2020-08-22 22:20:35,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:20:35,794 INFO L225 Difference]: With dead ends: 244 [2020-08-22 22:20:35,794 INFO L226 Difference]: Without dead ends: 159 [2020-08-22 22:20:35,795 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 [2020-08-22 22:20:35,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-08-22 22:20:35,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2020-08-22 22:20:35,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-08-22 22:20:35,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 170 transitions. [2020-08-22 22:20:35,812 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 170 transitions. Word has length 61 [2020-08-22 22:20:35,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:20:35,813 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 170 transitions. [2020-08-22 22:20:35,813 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 22:20:35,813 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 170 transitions. [2020-08-22 22:20:35,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-08-22 22:20:35,814 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:20:35,815 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, 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 22:20:35,815 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 22:20:35,815 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:20:35,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:20:35,816 INFO L82 PathProgramCache]: Analyzing trace with hash -158274674, now seen corresponding path program 1 times [2020-08-22 22:20:35,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:20:35,816 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1223000440] [2020-08-22 22:20:35,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:20:35,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:35,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:20:35,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:35,967 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-22 22:20:35,968 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1223000440] [2020-08-22 22:20:35,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:20:35,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 22:20:35,968 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620323176] [2020-08-22 22:20:35,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 22:20:35,969 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:20:35,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 22:20:35,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 22:20:35,970 INFO L87 Difference]: Start difference. First operand 159 states and 170 transitions. Second operand 8 states. [2020-08-22 22:20:36,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:20:36,390 INFO L93 Difference]: Finished difference Result 271 states and 289 transitions. [2020-08-22 22:20:36,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 22:20:36,393 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-08-22 22:20:36,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:20:36,395 INFO L225 Difference]: With dead ends: 271 [2020-08-22 22:20:36,395 INFO L226 Difference]: Without dead ends: 185 [2020-08-22 22:20:36,397 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-08-22 22:20:36,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-08-22 22:20:36,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 167. [2020-08-22 22:20:36,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-08-22 22:20:36,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 179 transitions. [2020-08-22 22:20:36,420 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 179 transitions. Word has length 63 [2020-08-22 22:20:36,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:20:36,421 INFO L479 AbstractCegarLoop]: Abstraction has 167 states and 179 transitions. [2020-08-22 22:20:36,421 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 22:20:36,421 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 179 transitions. [2020-08-22 22:20:36,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-08-22 22:20:36,423 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:20:36,423 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, 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 22:20:36,423 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 22:20:36,423 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:20:36,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:20:36,424 INFO L82 PathProgramCache]: Analyzing trace with hash -1072824646, now seen corresponding path program 1 times [2020-08-22 22:20:36,424 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:20:36,425 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1194694721] [2020-08-22 22:20:36,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:20:36,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 22:20:36,458 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 22:20:36,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 22:20:36,512 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 22:20:36,567 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 22:20:36,567 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 22:20:36,568 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 22:20:36,636 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 10:20:36 BoogieIcfgContainer [2020-08-22 22:20:36,636 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 22:20:36,639 INFO L168 Benchmark]: Toolchain (without parser) took 4794.15 ms. Allocated memory was 141.0 MB in the beginning and 243.8 MB in the end (delta: 102.8 MB). Free memory was 103.0 MB in the beginning and 126.7 MB in the end (delta: -23.7 MB). Peak memory consumption was 79.0 MB. Max. memory is 7.1 GB. [2020-08-22 22:20:36,640 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 141.0 MB. Free memory was 123.6 MB in the beginning and 123.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 22:20:36,641 INFO L168 Benchmark]: CACSL2BoogieTranslator took 771.99 ms. Allocated memory was 141.0 MB in the beginning and 205.0 MB in the end (delta: 64.0 MB). Free memory was 102.8 MB in the beginning and 171.0 MB in the end (delta: -68.2 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. [2020-08-22 22:20:36,642 INFO L168 Benchmark]: Boogie Preprocessor took 87.84 ms. Allocated memory is still 205.0 MB. Free memory was 171.0 MB in the beginning and 167.8 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. [2020-08-22 22:20:36,643 INFO L168 Benchmark]: RCFGBuilder took 825.98 ms. Allocated memory is still 205.0 MB. Free memory was 167.1 MB in the beginning and 106.7 MB in the end (delta: 60.5 MB). Peak memory consumption was 60.5 MB. Max. memory is 7.1 GB. [2020-08-22 22:20:36,644 INFO L168 Benchmark]: TraceAbstraction took 3103.45 ms. Allocated memory was 205.0 MB in the beginning and 243.8 MB in the end (delta: 38.8 MB). Free memory was 106.0 MB in the beginning and 126.7 MB in the end (delta: -20.7 MB). Peak memory consumption was 18.1 MB. Max. memory is 7.1 GB. [2020-08-22 22:20:36,648 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 141.0 MB. Free memory was 123.6 MB in the beginning and 123.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 771.99 ms. Allocated memory was 141.0 MB in the beginning and 205.0 MB in the end (delta: 64.0 MB). Free memory was 102.8 MB in the beginning and 171.0 MB in the end (delta: -68.2 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 87.84 ms. Allocated memory is still 205.0 MB. Free memory was 171.0 MB in the beginning and 167.8 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 825.98 ms. Allocated memory is still 205.0 MB. Free memory was 167.1 MB in the beginning and 106.7 MB in the end (delta: 60.5 MB). Peak memory consumption was 60.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3103.45 ms. Allocated memory was 205.0 MB in the beginning and 243.8 MB in the end (delta: 38.8 MB). Free memory was 106.0 MB in the beginning and 126.7 MB in the end (delta: -20.7 MB). Peak memory consumption was 18.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1027]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L986] SLL* head = malloc(sizeof(SLL)); VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}] [L987] head->next = ((void*)0) VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}] [L988] head->prev = ((void*)0) VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}] [L989] head->data = 0 VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}] [L991] SLL* x = head; VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}] [L992] int marked = 0; VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, marked=0, x={-1:0}] [L995] COND TRUE __VERIFIER_nondet_int() || !marked VAL [__VERIFIER_nondet_int()=1, head={-1:0}, malloc(sizeof(SLL))={-1:0}, marked=0, x={-1:0}] [L998] x->next = malloc(sizeof(SLL)) VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, marked=0, x={-1:0}] [L999] EXPR x->next VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, marked=0, x={-1:0}, x->next={-2:0}] [L999] x->next->prev = x VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, marked=0, x={-1:0}, x->next={-2:0}] [L1000] EXPR x->next VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, marked=0, x={-1:0}, x->next={-2:0}] [L1000] x = x->next VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, marked=0, x={-2:0}, x->next={-2:0}] [L1001] x->next = ((void*)0) VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, marked=0, x={-2:0}] [L1003] COND TRUE __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=1, head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, marked=0, x={-2:0}] [L1005] marked = 1 VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, marked=1, x={-2:0}] [L1008] COND TRUE \read(marked) VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, marked=1, x={-2:0}] [L1009] x->data = 1 VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, marked=1, x={-2:0}] [L995] COND FALSE !(__VERIFIER_nondet_int() || !marked) VAL [__VERIFIER_nondet_int()=0, head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, marked=1, x={-2:0}] [L1014] x = head VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, marked=1, x={-1:0}] [L1016] COND FALSE !(!(((void*)0) != x)) VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, marked=1, x={-1:0}] [L1017] marked = 0 VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, marked=0, x={-1:0}] [L1019] EXPR x->next VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, marked=0, x={-1:0}, x->next={-2:0}] [L1019] x->next != ((void*)0) && x->next->data == 0 VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, marked=0, x={-1:0}, x->next={-2:0}, x->next != ((void*)0) && x->next->data == 0=1] [L1019] EXPR x->next VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, marked=0, x={-1:0}, x->next={-2:0}, x->next={-2:0}, x->next != ((void*)0) && x->next->data == 0=1] [L1019] EXPR x->next->data VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, marked=0, x={-1:0}, x->next={-2:0}, x->next={-2:0}, x->next != ((void*)0) && x->next->data == 0=1, x->next->data=1] [L1019] x->next != ((void*)0) && x->next->data == 0 VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, marked=0, x={-1:0}, x->next={-2:0}, x->next={-2:0}, x->next != ((void*)0) && x->next->data == 0=0, x->next->data=1] [L1019] COND FALSE !(x->next != ((void*)0) && x->next->data == 0) VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, marked=0, x={-1:0}, x->next={-2:0}, x->next={-2:0}, x->next != ((void*)0) && x->next->data == 0=0, x->next->data=1] [L1024] EXPR x->next VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, marked=0, x={-1:0}, x->next={-2:0}] [L1024] x->next != ((void*)0) && __VERIFIER_nondet_int() VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, marked=0, x={-1:0}, x->next={-2:0}, x->next != ((void*)0) && __VERIFIER_nondet_int()=1] [L1024] x->next != ((void*)0) && __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=1, head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, marked=0, x={-1:0}, x->next={-2:0}, x->next != ((void*)0) && __VERIFIER_nondet_int()=1] [L1024] COND TRUE x->next != ((void*)0) && __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=1, head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, marked=0, x={-1:0}, x->next={-2:0}, x->next != ((void*)0) && __VERIFIER_nondet_int()=1] [L1026] EXPR x->next VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, marked=0, x={-1:0}, x->next={-2:0}] [L1026] x = x->next VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, marked=0, x={-2:0}, x->next={-2:0}] [L1027] EXPR x->data VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, marked=0, x={-2:0}, x->data=1] [L1027] COND TRUE !(x->data != 1) VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, marked=0, x={-2:0}, x->data=1] [L1027] __VERIFIER_error() VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, marked=0, x={-2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 156 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.9s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 729 SDtfs, 769 SDslu, 804 SDs, 0 SdLazy, 995 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=167occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 125 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 266 NumberOfCodeBlocks, 266 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 195 ConstructedInterpolants, 0 QuantifiedInterpolants, 22075 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 6/6 InterpolantCoveringCapability, 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...