/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-token-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 22:07:34,238 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 22:07:34,241 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 22:07:34,268 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 22:07:34,268 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 22:07:34,269 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 22:07:34,271 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 22:07:34,273 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 22:07:34,275 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 22:07:34,277 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 22:07:34,278 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 22:07:34,280 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 22:07:34,280 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 22:07:34,282 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 22:07:34,284 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 22:07:34,285 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 22:07:34,287 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 22:07:34,288 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 22:07:34,290 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 22:07:34,293 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 22:07:34,298 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 22:07:34,300 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 22:07:34,304 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 22:07:34,306 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 22:07:34,311 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 22:07:34,315 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 22:07:34,316 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 22:07:34,317 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 22:07:34,318 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 22:07:34,320 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 22:07:34,323 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 22:07:34,324 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 22:07:34,326 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 22:07:34,328 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 22:07:34,330 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 22:07:34,330 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 22:07:34,331 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 22:07:34,331 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 22:07:34,332 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 22:07:34,333 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 22:07:34,336 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 22:07:34,337 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 22:07:34,360 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 22:07:34,361 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 22:07:34,364 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 22:07:34,364 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 22:07:34,365 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 22:07:34,365 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 22:07:34,365 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 22:07:34,366 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 22:07:34,366 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 22:07:34,366 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 22:07:34,367 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 22:07:34,368 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 22:07:34,368 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 22:07:34,368 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 22:07:34,369 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 22:07:34,369 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 22:07:34,369 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 22:07:34,369 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 22:07:34,369 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 22:07:34,370 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 22:07:34,370 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 22:07:34,370 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 22:07:34,370 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 [2020-09-04 22:07:34,855 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 22:07:34,883 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 22:07:34,889 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 22:07:34,892 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 22:07:34,892 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 22:07:34,894 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-token-2.i [2020-09-04 22:07:35,009 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0dc15fbe8/31ffada49e3243ebbb5d60e03c46c184/FLAG990f1abd6 [2020-09-04 22:07:35,633 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 22:07:35,634 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/dll-token-2.i [2020-09-04 22:07:35,651 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0dc15fbe8/31ffada49e3243ebbb5d60e03c46c184/FLAG990f1abd6 [2020-09-04 22:07:35,888 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0dc15fbe8/31ffada49e3243ebbb5d60e03c46c184 [2020-09-04 22:07:35,902 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 22:07:35,904 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 22:07:35,905 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 22:07:35,905 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 22:07:35,909 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 22:07:35,911 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 10:07:35" (1/1) ... [2020-09-04 22:07:35,915 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27030054 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:07:35, skipping insertion in model container [2020-09-04 22:07:35,915 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 10:07:35" (1/1) ... [2020-09-04 22:07:35,924 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 22:07:35,975 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 22:07:36,507 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 22:07:36,525 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 22:07:36,593 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 22:07:36,663 INFO L208 MainTranslator]: Completed translation [2020-09-04 22:07:36,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:07:36 WrapperNode [2020-09-04 22:07:36,664 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 22:07:36,665 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 22:07:36,665 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 22:07:36,666 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 22:07:36,686 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:07:36" (1/1) ... [2020-09-04 22:07:36,687 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:07:36" (1/1) ... [2020-09-04 22:07:36,723 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:07:36" (1/1) ... [2020-09-04 22:07:36,725 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:07:36" (1/1) ... [2020-09-04 22:07:36,767 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:07:36" (1/1) ... [2020-09-04 22:07:36,782 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:07:36" (1/1) ... [2020-09-04 22:07:36,786 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:07:36" (1/1) ... [2020-09-04 22:07:36,793 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 22:07:36,794 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 22:07:36,794 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 22:07:36,794 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 22:07:36,797 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:07:36" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 22:07:36,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 22:07:36,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 22:07:36,885 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 22:07:36,885 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-04 22:07:36,885 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-04 22:07:36,885 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-04 22:07:36,885 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-04 22:07:36,885 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-04 22:07:36,886 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-04 22:07:36,886 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-04 22:07:36,886 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-04 22:07:36,886 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-04 22:07:36,886 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-04 22:07:36,886 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-04 22:07:36,887 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-04 22:07:36,887 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-04 22:07:36,887 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-04 22:07:36,887 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-04 22:07:36,888 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-04 22:07:36,888 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-04 22:07:36,888 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-04 22:07:36,888 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-04 22:07:36,889 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-04 22:07:36,895 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-04 22:07:36,895 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-04 22:07:36,895 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-04 22:07:36,895 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-04 22:07:36,896 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-04 22:07:36,896 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-04 22:07:36,896 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-04 22:07:36,896 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-04 22:07:36,896 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-04 22:07:36,896 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-04 22:07:36,897 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-04 22:07:36,897 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-04 22:07:36,897 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-04 22:07:36,897 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-04 22:07:36,897 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-04 22:07:36,897 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-04 22:07:36,897 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-04 22:07:36,898 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-04 22:07:36,901 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-04 22:07:36,901 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-04 22:07:36,901 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-04 22:07:36,901 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-04 22:07:36,901 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-04 22:07:36,902 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-04 22:07:36,902 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-04 22:07:36,902 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-04 22:07:36,902 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-04 22:07:36,902 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-04 22:07:36,902 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-04 22:07:36,902 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-04 22:07:36,903 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 22:07:36,903 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-04 22:07:36,903 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-04 22:07:36,904 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-04 22:07:36,904 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-04 22:07:36,904 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-04 22:07:36,904 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-04 22:07:36,904 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-04 22:07:36,904 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-04 22:07:36,904 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 22:07:36,905 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-04 22:07:36,905 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-04 22:07:36,905 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-04 22:07:36,905 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-04 22:07:36,905 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-04 22:07:36,905 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-04 22:07:36,906 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-04 22:07:36,906 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-04 22:07:36,906 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-04 22:07:36,906 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-04 22:07:36,906 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-04 22:07:36,906 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-04 22:07:36,907 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-04 22:07:36,907 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-04 22:07:36,907 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-04 22:07:36,907 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-04 22:07:36,907 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-04 22:07:36,907 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-04 22:07:36,908 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-04 22:07:36,908 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-04 22:07:36,908 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-04 22:07:36,908 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-04 22:07:36,908 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-04 22:07:36,908 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-04 22:07:36,909 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-04 22:07:36,909 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-04 22:07:36,909 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-04 22:07:36,909 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-04 22:07:36,909 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-04 22:07:36,909 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-04 22:07:36,909 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-04 22:07:36,910 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-04 22:07:36,910 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-04 22:07:36,910 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-04 22:07:36,910 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-04 22:07:36,910 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-04 22:07:36,910 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-04 22:07:36,911 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-04 22:07:36,911 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-04 22:07:36,911 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-04 22:07:36,911 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-04 22:07:36,911 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-04 22:07:36,911 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-04 22:07:36,911 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 22:07:36,912 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 22:07:36,912 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 22:07:36,912 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 22:07:36,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-04 22:07:36,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 22:07:36,912 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-04 22:07:36,912 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 22:07:36,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 22:07:36,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 22:07:36,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 22:07:37,587 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 22:07:37,588 INFO L295 CfgBuilder]: Removed 15 assume(true) statements. [2020-09-04 22:07:37,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 10:07:37 BoogieIcfgContainer [2020-09-04 22:07:37,594 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 22:07:37,595 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 22:07:37,595 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 22:07:37,599 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 22:07:37,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 10:07:35" (1/3) ... [2020-09-04 22:07:37,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1aa9628f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 10:07:37, skipping insertion in model container [2020-09-04 22:07:37,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:07:36" (2/3) ... [2020-09-04 22:07:37,601 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1aa9628f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 10:07:37, skipping insertion in model container [2020-09-04 22:07:37,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 10:07:37" (3/3) ... [2020-09-04 22:07:37,604 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-token-2.i [2020-09-04 22:07:37,616 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 22:07:37,627 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-09-04 22:07:37,650 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-09-04 22:07:37,681 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 22:07:37,681 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 22:07:37,682 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-04 22:07:37,682 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 22:07:37,682 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 22:07:37,682 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 22:07:37,682 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 22:07:37,682 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 22:07:37,705 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states. [2020-09-04 22:07:37,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-04 22:07:37,719 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:07:37,721 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] [2020-09-04 22:07:37,722 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 22:07:37,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:07:37,729 INFO L82 PathProgramCache]: Analyzing trace with hash 536950687, now seen corresponding path program 1 times [2020-09-04 22:07:37,742 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:07:37,743 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1514821616] [2020-09-04 22:07:37,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:07:37,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:37,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:07:37,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:38,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 22:07:38,009 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1514821616] [2020-09-04 22:07:38,012 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 22:07:38,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 22:07:38,014 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671009681] [2020-09-04 22:07:38,022 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 22:07:38,023 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:07:38,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 22:07:38,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 22:07:38,049 INFO L87 Difference]: Start difference. First operand 101 states. Second operand 3 states. [2020-09-04 22:07:38,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:07:38,397 INFO L93 Difference]: Finished difference Result 189 states and 235 transitions. [2020-09-04 22:07:38,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 22:07:38,400 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-09-04 22:07:38,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:07:38,417 INFO L225 Difference]: With dead ends: 189 [2020-09-04 22:07:38,417 INFO L226 Difference]: Without dead ends: 90 [2020-09-04 22:07:38,423 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 22:07:38,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-09-04 22:07:38,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2020-09-04 22:07:38,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-09-04 22:07:38,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 92 transitions. [2020-09-04 22:07:38,492 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 92 transitions. Word has length 26 [2020-09-04 22:07:38,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:07:38,493 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 92 transitions. [2020-09-04 22:07:38,493 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 22:07:38,493 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 92 transitions. [2020-09-04 22:07:38,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-04 22:07:38,494 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:07:38,495 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] [2020-09-04 22:07:38,495 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 22:07:38,496 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 22:07:38,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:07:38,496 INFO L82 PathProgramCache]: Analyzing trace with hash -692885691, now seen corresponding path program 1 times [2020-09-04 22:07:38,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:07:38,497 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [171102365] [2020-09-04 22:07:38,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:07:38,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:38,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:07:38,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:38,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 22:07:38,842 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [171102365] [2020-09-04 22:07:38,843 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 22:07:38,843 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-04 22:07:38,843 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934831076] [2020-09-04 22:07:38,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-04 22:07:38,846 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:07:38,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-04 22:07:38,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-09-04 22:07:38,847 INFO L87 Difference]: Start difference. First operand 90 states and 92 transitions. Second operand 12 states. [2020-09-04 22:07:39,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:07:39,811 INFO L93 Difference]: Finished difference Result 174 states and 179 transitions. [2020-09-04 22:07:39,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-04 22:07:39,812 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2020-09-04 22:07:39,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:07:39,814 INFO L225 Difference]: With dead ends: 174 [2020-09-04 22:07:39,814 INFO L226 Difference]: Without dead ends: 172 [2020-09-04 22:07:39,816 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2020-09-04 22:07:39,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-09-04 22:07:39,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 103. [2020-09-04 22:07:39,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-09-04 22:07:39,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 106 transitions. [2020-09-04 22:07:39,838 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 106 transitions. Word has length 27 [2020-09-04 22:07:39,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:07:39,839 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 106 transitions. [2020-09-04 22:07:39,839 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-04 22:07:39,839 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 106 transitions. [2020-09-04 22:07:39,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-09-04 22:07:39,840 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:07:39,840 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] [2020-09-04 22:07:39,840 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 22:07:39,841 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 22:07:39,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:07:39,841 INFO L82 PathProgramCache]: Analyzing trace with hash 2098857180, now seen corresponding path program 1 times [2020-09-04 22:07:39,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:07:39,842 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1033649208] [2020-09-04 22:07:39,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:07:39,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:40,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:07:40,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:40,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 22:07:40,054 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1033649208] [2020-09-04 22:07:40,055 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 22:07:40,055 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-04 22:07:40,055 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257206078] [2020-09-04 22:07:40,056 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 22:07:40,056 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:07:40,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 22:07:40,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-04 22:07:40,058 INFO L87 Difference]: Start difference. First operand 103 states and 106 transitions. Second operand 6 states. [2020-09-04 22:07:40,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:07:40,343 INFO L93 Difference]: Finished difference Result 160 states and 164 transitions. [2020-09-04 22:07:40,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 22:07:40,344 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-09-04 22:07:40,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:07:40,346 INFO L225 Difference]: With dead ends: 160 [2020-09-04 22:07:40,348 INFO L226 Difference]: Without dead ends: 158 [2020-09-04 22:07:40,349 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-04 22:07:40,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-09-04 22:07:40,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 101. [2020-09-04 22:07:40,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-09-04 22:07:40,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 104 transitions. [2020-09-04 22:07:40,387 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 104 transitions. Word has length 28 [2020-09-04 22:07:40,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:07:40,388 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 104 transitions. [2020-09-04 22:07:40,388 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 22:07:40,388 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 104 transitions. [2020-09-04 22:07:40,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-04 22:07:40,390 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:07:40,390 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] [2020-09-04 22:07:40,390 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 22:07:40,391 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 22:07:40,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:07:40,391 INFO L82 PathProgramCache]: Analyzing trace with hash 578708441, now seen corresponding path program 1 times [2020-09-04 22:07:40,391 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:07:40,392 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1814897177] [2020-09-04 22:07:40,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:07:40,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:40,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:07:40,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:40,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 22:07:40,500 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1814897177] [2020-09-04 22:07:40,500 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 22:07:40,501 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-04 22:07:40,501 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712977625] [2020-09-04 22:07:40,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 22:07:40,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:07:40,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 22:07:40,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-04 22:07:40,503 INFO L87 Difference]: Start difference. First operand 101 states and 104 transitions. Second operand 6 states. [2020-09-04 22:07:40,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:07:40,775 INFO L93 Difference]: Finished difference Result 101 states and 104 transitions. [2020-09-04 22:07:40,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-04 22:07:40,777 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2020-09-04 22:07:40,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:07:40,781 INFO L225 Difference]: With dead ends: 101 [2020-09-04 22:07:40,781 INFO L226 Difference]: Without dead ends: 98 [2020-09-04 22:07:40,782 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-04 22:07:40,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-09-04 22:07:40,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2020-09-04 22:07:40,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-09-04 22:07:40,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 101 transitions. [2020-09-04 22:07:40,800 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 101 transitions. Word has length 35 [2020-09-04 22:07:40,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:07:40,801 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 101 transitions. [2020-09-04 22:07:40,801 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 22:07:40,801 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 101 transitions. [2020-09-04 22:07:40,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-04 22:07:40,803 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:07:40,803 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] [2020-09-04 22:07:40,803 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 22:07:40,804 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 22:07:40,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:07:40,804 INFO L82 PathProgramCache]: Analyzing trace with hash 666566073, now seen corresponding path program 1 times [2020-09-04 22:07:40,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:07:40,805 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [975891521] [2020-09-04 22:07:40,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:07:40,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:41,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:07:41,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:41,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 22:07:41,406 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [975891521] [2020-09-04 22:07:41,406 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 22:07:41,406 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-09-04 22:07:41,406 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279082798] [2020-09-04 22:07:41,407 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-04 22:07:41,407 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:07:41,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-04 22:07:41,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2020-09-04 22:07:41,408 INFO L87 Difference]: Start difference. First operand 98 states and 101 transitions. Second operand 14 states. [2020-09-04 22:07:42,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:07:42,439 INFO L93 Difference]: Finished difference Result 229 states and 235 transitions. [2020-09-04 22:07:42,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-04 22:07:42,440 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 35 [2020-09-04 22:07:42,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:07:42,442 INFO L225 Difference]: With dead ends: 229 [2020-09-04 22:07:42,442 INFO L226 Difference]: Without dead ends: 186 [2020-09-04 22:07:42,445 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=173, Invalid=477, Unknown=0, NotChecked=0, Total=650 [2020-09-04 22:07:42,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-09-04 22:07:42,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 113. [2020-09-04 22:07:42,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-09-04 22:07:42,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 116 transitions. [2020-09-04 22:07:42,479 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 116 transitions. Word has length 35 [2020-09-04 22:07:42,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:07:42,482 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 116 transitions. [2020-09-04 22:07:42,482 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-04 22:07:42,482 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 116 transitions. [2020-09-04 22:07:42,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-09-04 22:07:42,491 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:07:42,492 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 22:07:42,492 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 22:07:42,492 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 22:07:42,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:07:42,493 INFO L82 PathProgramCache]: Analyzing trace with hash 323200756, now seen corresponding path program 1 times [2020-09-04 22:07:42,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:07:42,493 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1447529163] [2020-09-04 22:07:42,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:07:42,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:42,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:07:42,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:42,861 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-04 22:07:42,862 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1447529163] [2020-09-04 22:07:42,862 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 22:07:42,862 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-04 22:07:42,862 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380369940] [2020-09-04 22:07:42,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-04 22:07:42,863 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:07:42,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-04 22:07:42,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2020-09-04 22:07:42,864 INFO L87 Difference]: Start difference. First operand 113 states and 116 transitions. Second operand 17 states. [2020-09-04 22:07:43,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:07:43,915 INFO L93 Difference]: Finished difference Result 146 states and 150 transitions. [2020-09-04 22:07:43,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-04 22:07:43,916 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 41 [2020-09-04 22:07:43,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:07:43,917 INFO L225 Difference]: With dead ends: 146 [2020-09-04 22:07:43,918 INFO L226 Difference]: Without dead ends: 144 [2020-09-04 22:07:43,919 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=196, Invalid=616, Unknown=0, NotChecked=0, Total=812 [2020-09-04 22:07:43,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-09-04 22:07:43,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 100. [2020-09-04 22:07:43,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-09-04 22:07:43,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 103 transitions. [2020-09-04 22:07:43,943 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 103 transitions. Word has length 41 [2020-09-04 22:07:43,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:07:43,944 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 103 transitions. [2020-09-04 22:07:43,944 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-04 22:07:43,944 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 103 transitions. [2020-09-04 22:07:43,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-04 22:07:43,946 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:07:43,946 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, 1] [2020-09-04 22:07:43,946 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-04 22:07:43,947 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 22:07:43,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:07:43,947 INFO L82 PathProgramCache]: Analyzing trace with hash 957359950, now seen corresponding path program 1 times [2020-09-04 22:07:43,948 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:07:43,948 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1373958209] [2020-09-04 22:07:43,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:07:43,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 22:07:43,984 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 22:07:44,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 22:07:44,017 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 22:07:44,056 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 22:07:44,057 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 22:07:44,057 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-04 22:07:44,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 10:07:44 BoogieIcfgContainer [2020-09-04 22:07:44,113 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 22:07:44,118 INFO L168 Benchmark]: Toolchain (without parser) took 8212.04 ms. Allocated memory was 138.9 MB in the beginning and 289.4 MB in the end (delta: 150.5 MB). Free memory was 101.9 MB in the beginning and 212.2 MB in the end (delta: -110.3 MB). Peak memory consumption was 40.2 MB. Max. memory is 7.1 GB. [2020-09-04 22:07:44,119 INFO L168 Benchmark]: CDTParser took 0.39 ms. Allocated memory is still 138.9 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-04 22:07:44,120 INFO L168 Benchmark]: CACSL2BoogieTranslator took 759.77 ms. Allocated memory was 138.9 MB in the beginning and 203.9 MB in the end (delta: 65.0 MB). Free memory was 101.5 MB in the beginning and 171.5 MB in the end (delta: -70.0 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. [2020-09-04 22:07:44,121 INFO L168 Benchmark]: Boogie Preprocessor took 127.82 ms. Allocated memory is still 203.9 MB. Free memory was 171.5 MB in the beginning and 168.0 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. [2020-09-04 22:07:44,122 INFO L168 Benchmark]: RCFGBuilder took 800.61 ms. Allocated memory is still 203.9 MB. Free memory was 168.0 MB in the beginning and 117.5 MB in the end (delta: 50.6 MB). Peak memory consumption was 50.6 MB. Max. memory is 7.1 GB. [2020-09-04 22:07:44,123 INFO L168 Benchmark]: TraceAbstraction took 6518.39 ms. Allocated memory was 203.9 MB in the beginning and 289.4 MB in the end (delta: 85.5 MB). Free memory was 116.8 MB in the beginning and 212.2 MB in the end (delta: -95.4 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 22:07:44,127 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39 ms. Allocated memory is still 138.9 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 759.77 ms. Allocated memory was 138.9 MB in the beginning and 203.9 MB in the end (delta: 65.0 MB). Free memory was 101.5 MB in the beginning and 171.5 MB in the end (delta: -70.0 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 127.82 ms. Allocated memory is still 203.9 MB. Free memory was 171.5 MB in the beginning and 168.0 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 800.61 ms. Allocated memory is still 203.9 MB. Free memory was 168.0 MB in the beginning and 117.5 MB in the end (delta: 50.6 MB). Peak memory consumption was 50.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6518.39 ms. Allocated memory was 203.9 MB in the beginning and 289.4 MB in the end (delta: 85.5 MB). Free memory was 116.8 MB in the beginning and 212.2 MB in the end (delta: -95.4 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1026]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L993] SLL* head = malloc(sizeof(SLL)); VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}] [L994] head->next = ((void*)0) VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}] [L995] head->prev = ((void*)0) VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}] [L996] head->data = 0 VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}] [L998] SLL* x = head; VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}] [L1001] COND FALSE !(__VERIFIER_nondet_int()) VAL [__VERIFIER_nondet_int()=0, head={-1:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}] [L1010] x->data = 1 VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}] [L1011] x->next = malloc(sizeof(SLL)) VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, x={-1:0}] [L1012] EXPR x->next VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, x={-1:0}, x->next={-2:0}] [L1012] x->next->prev = x VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, x={-1:0}, x->next={-2:0}] [L1013] EXPR x->next VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, x={-1:0}, x->next={-2:0}] [L1013] x->next->data = 2 VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, x={-1:0}, x->next={-2:0}] [L1015] x = head VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, x={-1:0}] [L1017] COND FALSE !(!(((void*)0) != x)) VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, x={-1:0}] [L1019] EXPR x->data VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, x={-1:0}, x->data=1] [L1019] COND FALSE !(1 != x->data) VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, x={-1:0}, x->data=1] [L1024] EXPR x->data VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, x={-1:0}, x->data=1] [L1024] COND FALSE !(!(1 == x->data)) VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, x={-1:0}, x->data=1] [L1025] EXPR x->next VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, x={-1:0}, x->next={-2:0}] [L1025] x = x->next VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, x={-2:0}, x->next={-2:0}] [L1026] EXPR x->data VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, x={-2:0}, x->data=2] [L1026] COND TRUE !(2 != x->data) VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, x={-2:0}, x->data=2] [L1026] __VERIFIER_error() VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, x={-2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 101 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 6.3s, OverallIterations: 7, TraceHistogramMax: 2, AutomataDifference: 4.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 425 SDtfs, 1341 SDslu, 1784 SDs, 0 SdLazy, 1954 SolverSat, 141 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 102 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=113occurred 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, 6 MinimizatonAttempts, 243 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 234 NumberOfCodeBlocks, 234 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 186 ConstructedInterpolants, 0 QuantifiedInterpolants, 30823 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 4/13 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...