/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/forester-heap/dll-01-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 20:37:49,705 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 20:37:49,708 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 20:37:49,764 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 20:37:49,765 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 20:37:49,770 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 20:37:49,774 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 20:37:49,783 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 20:37:49,786 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 20:37:49,794 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 20:37:49,804 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 20:37:49,805 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 20:37:49,805 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 20:37:49,808 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 20:37:49,810 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 20:37:49,812 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 20:37:49,813 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 20:37:49,817 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 20:37:49,824 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 20:37:49,827 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 20:37:49,831 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 20:37:49,832 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 20:37:49,834 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 20:37:49,836 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 20:37:49,845 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 20:37:49,845 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 20:37:49,845 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 20:37:49,848 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 20:37:49,848 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 20:37:49,849 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 20:37:49,849 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 20:37:49,850 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 20:37:49,852 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 20:37:49,853 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 20:37:49,854 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 20:37:49,854 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 20:37:49,855 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 20:37:49,855 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 20:37:49,855 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 20:37:49,856 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 20:37:49,857 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 20:37:49,858 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 20:37:49,877 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 20:37:49,877 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 20:37:49,883 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 20:37:49,883 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 20:37:49,883 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 20:37:49,884 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 20:37:49,884 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 20:37:49,884 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 20:37:49,884 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 20:37:49,885 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 20:37:49,886 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 20:37:49,886 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 20:37:49,886 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 20:37:49,887 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 20:37:49,887 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 20:37:49,887 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 20:37:49,887 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 20:37:49,887 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 20:37:49,888 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 20:37:49,888 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 20:37:49,888 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 20:37:49,888 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 20:37:49,888 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 20:37:50,263 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 20:37:50,288 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 20:37:50,291 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 20:37:50,292 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 20:37:50,293 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 20:37:50,294 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-01-1.i [2020-10-23 20:37:50,380 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc0db407a/797d3c934d73453d9dfbcf21016da84f/FLAG7ec58ded3 [2020-10-23 20:37:51,139 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 20:37:51,140 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-01-1.i [2020-10-23 20:37:51,160 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc0db407a/797d3c934d73453d9dfbcf21016da84f/FLAG7ec58ded3 [2020-10-23 20:37:51,407 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc0db407a/797d3c934d73453d9dfbcf21016da84f [2020-10-23 20:37:51,416 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 20:37:51,428 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 20:37:51,430 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 20:37:51,431 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 20:37:51,435 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 20:37:51,436 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:37:51" (1/1) ... [2020-10-23 20:37:51,440 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d88490e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:37:51, skipping insertion in model container [2020-10-23 20:37:51,440 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:37:51" (1/1) ... [2020-10-23 20:37:51,449 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 20:37:51,517 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 20:37:51,837 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:37:51,846 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 20:37:51,922 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:37:51,991 INFO L208 MainTranslator]: Completed translation [2020-10-23 20:37:51,992 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:37:51 WrapperNode [2020-10-23 20:37:51,992 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 20:37:51,993 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 20:37:51,993 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 20:37:51,993 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 20:37:52,005 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:37:51" (1/1) ... [2020-10-23 20:37:52,005 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:37:51" (1/1) ... [2020-10-23 20:37:52,022 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:37:51" (1/1) ... [2020-10-23 20:37:52,022 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:37:51" (1/1) ... [2020-10-23 20:37:52,046 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:37:51" (1/1) ... [2020-10-23 20:37:52,057 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:37:51" (1/1) ... [2020-10-23 20:37:52,062 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:37:51" (1/1) ... [2020-10-23 20:37:52,087 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 20:37:52,089 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 20:37:52,089 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 20:37:52,089 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 20:37:52,090 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:37:51" (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 [2020-10-23 20:37:52,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 20:37:52,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 20:37:52,161 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 20:37:52,161 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 20:37:52,161 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-23 20:37:52,162 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-23 20:37:52,162 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-23 20:37:52,162 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-23 20:37:52,162 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-23 20:37:52,162 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-23 20:37:52,162 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-23 20:37:52,162 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-23 20:37:52,163 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-23 20:37:52,163 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-23 20:37:52,163 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-23 20:37:52,163 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-23 20:37:52,163 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-23 20:37:52,163 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-23 20:37:52,164 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-23 20:37:52,164 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-23 20:37:52,164 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-23 20:37:52,164 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-23 20:37:52,164 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-23 20:37:52,164 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-23 20:37:52,165 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-23 20:37:52,165 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-23 20:37:52,165 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-23 20:37:52,165 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-23 20:37:52,165 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-23 20:37:52,165 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-23 20:37:52,166 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-23 20:37:52,166 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-23 20:37:52,166 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-23 20:37:52,166 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-23 20:37:52,166 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-23 20:37:52,166 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-23 20:37:52,167 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-23 20:37:52,167 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-23 20:37:52,167 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-23 20:37:52,167 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-23 20:37:52,167 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-23 20:37:52,167 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-23 20:37:52,167 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-23 20:37:52,168 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-23 20:37:52,168 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-23 20:37:52,168 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-23 20:37:52,168 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-23 20:37:52,168 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-23 20:37:52,168 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-23 20:37:52,168 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-23 20:37:52,169 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-23 20:37:52,169 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-23 20:37:52,169 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-23 20:37:52,169 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-23 20:37:52,169 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 20:37:52,169 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-23 20:37:52,170 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-23 20:37:52,170 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-23 20:37:52,170 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-23 20:37:52,170 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-23 20:37:52,170 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-23 20:37:52,170 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-23 20:37:52,170 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-23 20:37:52,171 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 20:37:52,171 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-23 20:37:52,171 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-23 20:37:52,171 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-23 20:37:52,171 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-23 20:37:52,171 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-23 20:37:52,171 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-23 20:37:52,172 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-23 20:37:52,172 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-23 20:37:52,172 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-23 20:37:52,172 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-23 20:37:52,172 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-23 20:37:52,172 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-23 20:37:52,172 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-23 20:37:52,173 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-23 20:37:52,173 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-23 20:37:52,173 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-23 20:37:52,173 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-23 20:37:52,173 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-23 20:37:52,173 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-23 20:37:52,173 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-23 20:37:52,174 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-23 20:37:52,174 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-23 20:37:52,174 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-23 20:37:52,174 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-23 20:37:52,174 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-23 20:37:52,174 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-23 20:37:52,175 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-23 20:37:52,175 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-23 20:37:52,175 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-23 20:37:52,175 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-23 20:37:52,175 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-23 20:37:52,175 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-23 20:37:52,175 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-23 20:37:52,175 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-23 20:37:52,176 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-23 20:37:52,176 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-23 20:37:52,176 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-23 20:37:52,176 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-23 20:37:52,176 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-23 20:37:52,176 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-23 20:37:52,177 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-23 20:37:52,177 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-23 20:37:52,177 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-23 20:37:52,177 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 20:37:52,177 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 20:37:52,177 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-23 20:37:52,177 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-23 20:37:52,177 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 20:37:52,178 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 20:37:52,178 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 20:37:52,178 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 20:37:52,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-23 20:37:52,178 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-23 20:37:52,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 20:37:52,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 20:37:52,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 20:37:52,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 20:37:52,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 20:37:52,179 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 20:37:53,087 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 20:37:53,087 INFO L298 CfgBuilder]: Removed 30 assume(true) statements. [2020-10-23 20:37:53,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:37:53 BoogieIcfgContainer [2020-10-23 20:37:53,090 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 20:37:53,092 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 20:37:53,093 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 20:37:53,096 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 20:37:53,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:37:51" (1/3) ... [2020-10-23 20:37:53,097 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b30cdb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:37:53, skipping insertion in model container [2020-10-23 20:37:53,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:37:51" (2/3) ... [2020-10-23 20:37:53,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b30cdb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:37:53, skipping insertion in model container [2020-10-23 20:37:53,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:37:53" (3/3) ... [2020-10-23 20:37:53,100 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-01-1.i [2020-10-23 20:37:53,112 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 20:37:53,118 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 20:37:53,134 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 20:37:53,169 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 20:37:53,169 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 20:37:53,169 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 20:37:53,170 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 20:37:53,170 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 20:37:53,170 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 20:37:53,170 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 20:37:53,170 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 20:37:53,190 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states. [2020-10-23 20:37:53,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-23 20:37:53,199 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:37:53,200 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:37:53,200 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:37:53,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:37:53,207 INFO L82 PathProgramCache]: Analyzing trace with hash -296062564, now seen corresponding path program 1 times [2020-10-23 20:37:53,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:37:53,217 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [479715475] [2020-10-23 20:37:53,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:37:53,299 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:37:53,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:53,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:37:53,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:53,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:37:53,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [479715475] [2020-10-23 20:37:53,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:37:53,560 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 20:37:53,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664433145] [2020-10-23 20:37:53,565 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 20:37:53,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:37:53,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 20:37:53,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-23 20:37:53,583 INFO L87 Difference]: Start difference. First operand 181 states. Second operand 5 states. [2020-10-23 20:37:54,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:37:54,020 INFO L93 Difference]: Finished difference Result 357 states and 502 transitions. [2020-10-23 20:37:54,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-23 20:37:54,022 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-10-23 20:37:54,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:37:54,034 INFO L225 Difference]: With dead ends: 357 [2020-10-23 20:37:54,034 INFO L226 Difference]: Without dead ends: 186 [2020-10-23 20:37:54,040 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-23 20:37:54,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-10-23 20:37:54,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 159. [2020-10-23 20:37:54,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-10-23 20:37:54,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 179 transitions. [2020-10-23 20:37:54,119 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 179 transitions. Word has length 19 [2020-10-23 20:37:54,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:37:54,120 INFO L481 AbstractCegarLoop]: Abstraction has 159 states and 179 transitions. [2020-10-23 20:37:54,120 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 20:37:54,120 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 179 transitions. [2020-10-23 20:37:54,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-23 20:37:54,122 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:37:54,122 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:37:54,122 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 20:37:54,122 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:37:54,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:37:54,123 INFO L82 PathProgramCache]: Analyzing trace with hash -333799104, now seen corresponding path program 1 times [2020-10-23 20:37:54,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:37:54,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1599203981] [2020-10-23 20:37:54,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:37:54,129 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:37:54,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:54,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:37:54,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:54,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:37:54,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1599203981] [2020-10-23 20:37:54,264 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:37:54,264 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 20:37:54,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027452494] [2020-10-23 20:37:54,265 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 20:37:54,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:37:54,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 20:37:54,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 20:37:54,266 INFO L87 Difference]: Start difference. First operand 159 states and 179 transitions. Second operand 4 states. [2020-10-23 20:37:54,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:37:54,585 INFO L93 Difference]: Finished difference Result 167 states and 187 transitions. [2020-10-23 20:37:54,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-23 20:37:54,587 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-10-23 20:37:54,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:37:54,592 INFO L225 Difference]: With dead ends: 167 [2020-10-23 20:37:54,592 INFO L226 Difference]: Without dead ends: 160 [2020-10-23 20:37:54,594 INFO L677 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 [2020-10-23 20:37:54,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-10-23 20:37:54,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2020-10-23 20:37:54,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-10-23 20:37:54,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 180 transitions. [2020-10-23 20:37:54,630 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 180 transitions. Word has length 31 [2020-10-23 20:37:54,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:37:54,631 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 180 transitions. [2020-10-23 20:37:54,631 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 20:37:54,631 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 180 transitions. [2020-10-23 20:37:54,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-23 20:37:54,633 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:37:54,633 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:37:54,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 20:37:54,634 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:37:54,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:37:54,635 INFO L82 PathProgramCache]: Analyzing trace with hash -885790979, now seen corresponding path program 1 times [2020-10-23 20:37:54,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:37:54,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1003815567] [2020-10-23 20:37:54,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:37:54,645 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:37:54,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:54,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:37:54,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:54,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:37:54,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1003815567] [2020-10-23 20:37:54,857 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:37:54,857 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-23 20:37:54,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902906120] [2020-10-23 20:37:54,858 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-23 20:37:54,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:37:54,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-23 20:37:54,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-23 20:37:54,860 INFO L87 Difference]: Start difference. First operand 160 states and 180 transitions. Second operand 8 states. [2020-10-23 20:37:55,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:37:55,554 INFO L93 Difference]: Finished difference Result 246 states and 279 transitions. [2020-10-23 20:37:55,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-23 20:37:55,555 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2020-10-23 20:37:55,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:37:55,558 INFO L225 Difference]: With dead ends: 246 [2020-10-23 20:37:55,558 INFO L226 Difference]: Without dead ends: 239 [2020-10-23 20:37:55,559 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-23 20:37:55,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2020-10-23 20:37:55,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 155. [2020-10-23 20:37:55,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-10-23 20:37:55,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 174 transitions. [2020-10-23 20:37:55,592 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 174 transitions. Word has length 33 [2020-10-23 20:37:55,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:37:55,593 INFO L481 AbstractCegarLoop]: Abstraction has 155 states and 174 transitions. [2020-10-23 20:37:55,593 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-23 20:37:55,593 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 174 transitions. [2020-10-23 20:37:55,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-23 20:37:55,595 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:37:55,595 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] [2020-10-23 20:37:55,595 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 20:37:55,595 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:37:55,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:37:55,599 INFO L82 PathProgramCache]: Analyzing trace with hash 531390644, now seen corresponding path program 1 times [2020-10-23 20:37:55,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:37:55,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [257743293] [2020-10-23 20:37:55,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:37:55,607 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:37:55,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:55,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:37:55,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:55,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:37:55,741 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [257743293] [2020-10-23 20:37:55,741 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:37:55,741 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-23 20:37:55,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32865948] [2020-10-23 20:37:55,742 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-23 20:37:55,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:37:55,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-23 20:37:55,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-23 20:37:55,743 INFO L87 Difference]: Start difference. First operand 155 states and 174 transitions. Second operand 6 states. [2020-10-23 20:37:56,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:37:56,209 INFO L93 Difference]: Finished difference Result 357 states and 407 transitions. [2020-10-23 20:37:56,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-23 20:37:56,209 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 39 [2020-10-23 20:37:56,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:37:56,212 INFO L225 Difference]: With dead ends: 357 [2020-10-23 20:37:56,212 INFO L226 Difference]: Without dead ends: 237 [2020-10-23 20:37:56,214 INFO L677 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 [2020-10-23 20:37:56,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2020-10-23 20:37:56,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 158. [2020-10-23 20:37:56,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-10-23 20:37:56,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 177 transitions. [2020-10-23 20:37:56,237 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 177 transitions. Word has length 39 [2020-10-23 20:37:56,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:37:56,238 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 177 transitions. [2020-10-23 20:37:56,238 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-23 20:37:56,238 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 177 transitions. [2020-10-23 20:37:56,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-23 20:37:56,240 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:37:56,240 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:37:56,240 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 20:37:56,240 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:37:56,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:37:56,241 INFO L82 PathProgramCache]: Analyzing trace with hash -1103718031, now seen corresponding path program 1 times [2020-10-23 20:37:56,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:37:56,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1011861474] [2020-10-23 20:37:56,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:37:56,246 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:37:56,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:56,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:37:56,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:56,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:37:56,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1011861474] [2020-10-23 20:37:56,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:37:56,334 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-23 20:37:56,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952504111] [2020-10-23 20:37:56,335 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-23 20:37:56,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:37:56,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-23 20:37:56,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-23 20:37:56,336 INFO L87 Difference]: Start difference. First operand 158 states and 177 transitions. Second operand 6 states. [2020-10-23 20:37:56,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:37:56,715 INFO L93 Difference]: Finished difference Result 259 states and 293 transitions. [2020-10-23 20:37:56,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-23 20:37:56,715 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 41 [2020-10-23 20:37:56,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:37:56,717 INFO L225 Difference]: With dead ends: 259 [2020-10-23 20:37:56,717 INFO L226 Difference]: Without dead ends: 228 [2020-10-23 20:37:56,718 INFO L677 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 [2020-10-23 20:37:56,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-10-23 20:37:56,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 158. [2020-10-23 20:37:56,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-10-23 20:37:56,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 176 transitions. [2020-10-23 20:37:56,742 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 176 transitions. Word has length 41 [2020-10-23 20:37:56,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:37:56,743 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 176 transitions. [2020-10-23 20:37:56,743 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-23 20:37:56,743 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 176 transitions. [2020-10-23 20:37:56,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-23 20:37:56,746 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:37:56,746 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, 1, 1, 1, 1, 1, 1] [2020-10-23 20:37:56,747 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-23 20:37:56,747 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:37:56,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:37:56,748 INFO L82 PathProgramCache]: Analyzing trace with hash -107537349, now seen corresponding path program 1 times [2020-10-23 20:37:56,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:37:56,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [828425849] [2020-10-23 20:37:56,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:37:56,753 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:37:56,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:56,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:37:56,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:56,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:37:56,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [828425849] [2020-10-23 20:37:56,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:37:56,976 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-23 20:37:56,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700574822] [2020-10-23 20:37:56,976 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-23 20:37:56,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:37:56,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-23 20:37:56,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-10-23 20:37:56,977 INFO L87 Difference]: Start difference. First operand 158 states and 176 transitions. Second operand 12 states. [2020-10-23 20:37:57,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:37:57,788 INFO L93 Difference]: Finished difference Result 276 states and 310 transitions. [2020-10-23 20:37:57,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-23 20:37:57,789 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 48 [2020-10-23 20:37:57,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:37:57,791 INFO L225 Difference]: With dead ends: 276 [2020-10-23 20:37:57,791 INFO L226 Difference]: Without dead ends: 271 [2020-10-23 20:37:57,792 INFO L677 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 [2020-10-23 20:37:57,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2020-10-23 20:37:57,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 173. [2020-10-23 20:37:57,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2020-10-23 20:37:57,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 192 transitions. [2020-10-23 20:37:57,818 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 192 transitions. Word has length 48 [2020-10-23 20:37:57,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:37:57,819 INFO L481 AbstractCegarLoop]: Abstraction has 173 states and 192 transitions. [2020-10-23 20:37:57,819 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-23 20:37:57,819 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 192 transitions. [2020-10-23 20:37:57,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-23 20:37:57,821 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:37:57,821 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, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:37:57,821 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-23 20:37:57,821 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:37:57,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:37:57,822 INFO L82 PathProgramCache]: Analyzing trace with hash -135462151, now seen corresponding path program 1 times [2020-10-23 20:37:57,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:37:57,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1737930154] [2020-10-23 20:37:57,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:37:57,826 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:37:57,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:57,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:37:57,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:57,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:37:57,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1737930154] [2020-10-23 20:37:57,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:37:57,910 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 20:37:57,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758764115] [2020-10-23 20:37:57,910 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 20:37:57,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:37:57,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 20:37:57,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 20:37:57,914 INFO L87 Difference]: Start difference. First operand 173 states and 192 transitions. Second operand 4 states. [2020-10-23 20:37:58,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:37:58,212 INFO L93 Difference]: Finished difference Result 272 states and 309 transitions. [2020-10-23 20:37:58,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-23 20:37:58,212 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49 [2020-10-23 20:37:58,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:37:58,214 INFO L225 Difference]: With dead ends: 272 [2020-10-23 20:37:58,214 INFO L226 Difference]: Without dead ends: 209 [2020-10-23 20:37:58,215 INFO L677 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 [2020-10-23 20:37:58,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-10-23 20:37:58,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 176. [2020-10-23 20:37:58,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-10-23 20:37:58,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 196 transitions. [2020-10-23 20:37:58,248 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 196 transitions. Word has length 49 [2020-10-23 20:37:58,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:37:58,249 INFO L481 AbstractCegarLoop]: Abstraction has 176 states and 196 transitions. [2020-10-23 20:37:58,249 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 20:37:58,249 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 196 transitions. [2020-10-23 20:37:58,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-23 20:37:58,252 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:37:58,252 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:37:58,253 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-23 20:37:58,253 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:37:58,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:37:58,254 INFO L82 PathProgramCache]: Analyzing trace with hash -1820914827, now seen corresponding path program 1 times [2020-10-23 20:37:58,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:37:58,255 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [16672089] [2020-10-23 20:37:58,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:37:58,259 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:37:58,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:58,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:37:58,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:58,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:37:58,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [16672089] [2020-10-23 20:37:58,348 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:37:58,349 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 20:37:58,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513213498] [2020-10-23 20:37:58,350 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 20:37:58,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:37:58,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 20:37:58,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 20:37:58,351 INFO L87 Difference]: Start difference. First operand 176 states and 196 transitions. Second operand 4 states. [2020-10-23 20:37:58,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:37:58,627 INFO L93 Difference]: Finished difference Result 179 states and 198 transitions. [2020-10-23 20:37:58,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-23 20:37:58,629 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-10-23 20:37:58,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:37:58,631 INFO L225 Difference]: With dead ends: 179 [2020-10-23 20:37:58,631 INFO L226 Difference]: Without dead ends: 175 [2020-10-23 20:37:58,631 INFO L677 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 [2020-10-23 20:37:58,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-10-23 20:37:58,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2020-10-23 20:37:58,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-10-23 20:37:58,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 194 transitions. [2020-10-23 20:37:58,659 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 194 transitions. Word has length 51 [2020-10-23 20:37:58,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:37:58,659 INFO L481 AbstractCegarLoop]: Abstraction has 175 states and 194 transitions. [2020-10-23 20:37:58,659 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 20:37:58,660 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 194 transitions. [2020-10-23 20:37:58,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-23 20:37:58,667 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:37:58,667 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:37:58,668 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-23 20:37:58,668 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:37:58,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:37:58,669 INFO L82 PathProgramCache]: Analyzing trace with hash -1210911317, now seen corresponding path program 1 times [2020-10-23 20:37:58,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:37:58,670 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [11982616] [2020-10-23 20:37:58,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:37:58,677 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:37:58,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:58,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:37:58,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:58,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:37:58,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [11982616] [2020-10-23 20:37:58,847 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:37:58,847 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-23 20:37:58,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919245272] [2020-10-23 20:37:58,847 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-23 20:37:58,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:37:58,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-23 20:37:58,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-23 20:37:58,849 INFO L87 Difference]: Start difference. First operand 175 states and 194 transitions. Second operand 9 states. [2020-10-23 20:37:59,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:37:59,541 INFO L93 Difference]: Finished difference Result 356 states and 401 transitions. [2020-10-23 20:37:59,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-23 20:37:59,541 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 55 [2020-10-23 20:37:59,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:37:59,544 INFO L225 Difference]: With dead ends: 356 [2020-10-23 20:37:59,544 INFO L226 Difference]: Without dead ends: 291 [2020-10-23 20:37:59,545 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2020-10-23 20:37:59,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2020-10-23 20:37:59,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 194. [2020-10-23 20:37:59,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-10-23 20:37:59,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 214 transitions. [2020-10-23 20:37:59,573 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 214 transitions. Word has length 55 [2020-10-23 20:37:59,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:37:59,573 INFO L481 AbstractCegarLoop]: Abstraction has 194 states and 214 transitions. [2020-10-23 20:37:59,573 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-23 20:37:59,574 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 214 transitions. [2020-10-23 20:37:59,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-23 20:37:59,575 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:37:59,575 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:37:59,575 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-23 20:37:59,575 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:37:59,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:37:59,576 INFO L82 PathProgramCache]: Analyzing trace with hash -270220700, now seen corresponding path program 1 times [2020-10-23 20:37:59,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:37:59,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1396773103] [2020-10-23 20:37:59,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:37:59,697 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:37:59,700 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:37:59,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:59,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:37:59,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:59,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:37:59,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1396773103] [2020-10-23 20:37:59,826 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:37:59,826 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-23 20:37:59,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001135300] [2020-10-23 20:37:59,827 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-23 20:37:59,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:37:59,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-23 20:37:59,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-23 20:37:59,828 INFO L87 Difference]: Start difference. First operand 194 states and 214 transitions. Second operand 8 states. [2020-10-23 20:38:00,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:38:00,353 INFO L93 Difference]: Finished difference Result 275 states and 306 transitions. [2020-10-23 20:38:00,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-23 20:38:00,354 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 60 [2020-10-23 20:38:00,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:38:00,356 INFO L225 Difference]: With dead ends: 275 [2020-10-23 20:38:00,356 INFO L226 Difference]: Without dead ends: 245 [2020-10-23 20:38:00,357 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-10-23 20:38:00,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2020-10-23 20:38:00,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 229. [2020-10-23 20:38:00,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-10-23 20:38:00,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 256 transitions. [2020-10-23 20:38:00,399 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 256 transitions. Word has length 60 [2020-10-23 20:38:00,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:38:00,399 INFO L481 AbstractCegarLoop]: Abstraction has 229 states and 256 transitions. [2020-10-23 20:38:00,399 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-23 20:38:00,399 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 256 transitions. [2020-10-23 20:38:00,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-23 20:38:00,400 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:38:00,401 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:38:00,401 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-23 20:38:00,401 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:38:00,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:38:00,401 INFO L82 PathProgramCache]: Analyzing trace with hash 1306628089, now seen corresponding path program 1 times [2020-10-23 20:38:00,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:38:00,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [29475583] [2020-10-23 20:38:00,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:38:00,405 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:38:00,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:00,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:38:00,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:00,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:38:00,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [29475583] [2020-10-23 20:38:00,828 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:38:00,828 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-23 20:38:00,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021173421] [2020-10-23 20:38:00,828 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-23 20:38:00,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:38:00,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-23 20:38:00,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2020-10-23 20:38:00,830 INFO L87 Difference]: Start difference. First operand 229 states and 256 transitions. Second operand 16 states. [2020-10-23 20:38:03,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:38:03,925 INFO L93 Difference]: Finished difference Result 631 states and 711 transitions. [2020-10-23 20:38:03,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-23 20:38:03,926 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 60 [2020-10-23 20:38:03,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:38:03,931 INFO L225 Difference]: With dead ends: 631 [2020-10-23 20:38:03,931 INFO L226 Difference]: Without dead ends: 626 [2020-10-23 20:38:03,933 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 533 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=470, Invalid=1980, Unknown=0, NotChecked=0, Total=2450 [2020-10-23 20:38:03,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2020-10-23 20:38:03,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 246. [2020-10-23 20:38:03,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2020-10-23 20:38:03,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 274 transitions. [2020-10-23 20:38:03,988 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 274 transitions. Word has length 60 [2020-10-23 20:38:03,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:38:03,988 INFO L481 AbstractCegarLoop]: Abstraction has 246 states and 274 transitions. [2020-10-23 20:38:03,988 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-23 20:38:03,988 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 274 transitions. [2020-10-23 20:38:03,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-23 20:38:03,989 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:38:03,989 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:38:03,990 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-23 20:38:03,990 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:38:03,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:38:03,990 INFO L82 PathProgramCache]: Analyzing trace with hash 907155636, now seen corresponding path program 1 times [2020-10-23 20:38:03,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:38:03,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1843520918] [2020-10-23 20:38:03,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:38:03,994 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:38:04,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:04,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:38:04,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:04,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:38:04,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1843520918] [2020-10-23 20:38:04,042 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:38:04,042 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 20:38:04,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148988059] [2020-10-23 20:38:04,042 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 20:38:04,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:38:04,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 20:38:04,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 20:38:04,043 INFO L87 Difference]: Start difference. First operand 246 states and 274 transitions. Second operand 4 states. [2020-10-23 20:38:04,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:38:04,350 INFO L93 Difference]: Finished difference Result 254 states and 282 transitions. [2020-10-23 20:38:04,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-23 20:38:04,351 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2020-10-23 20:38:04,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:38:04,353 INFO L225 Difference]: With dead ends: 254 [2020-10-23 20:38:04,353 INFO L226 Difference]: Without dead ends: 247 [2020-10-23 20:38:04,354 INFO L677 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 [2020-10-23 20:38:04,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2020-10-23 20:38:04,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 247. [2020-10-23 20:38:04,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2020-10-23 20:38:04,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 275 transitions. [2020-10-23 20:38:04,418 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 275 transitions. Word has length 62 [2020-10-23 20:38:04,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:38:04,419 INFO L481 AbstractCegarLoop]: Abstraction has 247 states and 275 transitions. [2020-10-23 20:38:04,419 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 20:38:04,419 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 275 transitions. [2020-10-23 20:38:04,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-23 20:38:04,420 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:38:04,420 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:38:04,420 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-23 20:38:04,421 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:38:04,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:38:04,421 INFO L82 PathProgramCache]: Analyzing trace with hash 2063195505, now seen corresponding path program 1 times [2020-10-23 20:38:04,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:38:04,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [467728201] [2020-10-23 20:38:04,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:38:04,425 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:38:04,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:04,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:38:04,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:04,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:38:04,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [467728201] [2020-10-23 20:38:04,519 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:38:04,519 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-23 20:38:04,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753406013] [2020-10-23 20:38:04,520 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-23 20:38:04,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:38:04,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-23 20:38:04,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-23 20:38:04,521 INFO L87 Difference]: Start difference. First operand 247 states and 275 transitions. Second operand 8 states. [2020-10-23 20:38:05,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:38:05,005 INFO L93 Difference]: Finished difference Result 268 states and 297 transitions. [2020-10-23 20:38:05,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-23 20:38:05,006 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 64 [2020-10-23 20:38:05,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:38:05,007 INFO L225 Difference]: With dead ends: 268 [2020-10-23 20:38:05,008 INFO L226 Difference]: Without dead ends: 261 [2020-10-23 20:38:05,008 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-10-23 20:38:05,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2020-10-23 20:38:05,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 242. [2020-10-23 20:38:05,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-10-23 20:38:05,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 269 transitions. [2020-10-23 20:38:05,056 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 269 transitions. Word has length 64 [2020-10-23 20:38:05,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:38:05,057 INFO L481 AbstractCegarLoop]: Abstraction has 242 states and 269 transitions. [2020-10-23 20:38:05,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-23 20:38:05,057 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 269 transitions. [2020-10-23 20:38:05,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-23 20:38:05,058 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:38:05,058 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:38:05,058 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-23 20:38:05,058 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:38:05,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:38:05,059 INFO L82 PathProgramCache]: Analyzing trace with hash -1588921325, now seen corresponding path program 1 times [2020-10-23 20:38:05,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:38:05,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2075162139] [2020-10-23 20:38:05,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:38:05,063 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:38:05,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:38:05,078 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:38:05,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:38:05,094 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:38:05,130 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-23 20:38:05,130 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 20:38:05,131 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-23 20:38:05,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:38:05 BoogieIcfgContainer [2020-10-23 20:38:05,151 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 20:38:05,154 INFO L168 Benchmark]: Toolchain (without parser) took 13731.54 ms. Allocated memory was 159.4 MB in the beginning and 332.4 MB in the end (delta: 173.0 MB). Free memory was 134.0 MB in the beginning and 117.6 MB in the end (delta: 16.4 MB). Peak memory consumption was 190.2 MB. Max. memory is 8.0 GB. [2020-10-23 20:38:05,154 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 159.4 MB. Free memory was 132.4 MB in the beginning and 132.3 MB in the end (delta: 102.4 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 20:38:05,155 INFO L168 Benchmark]: CACSL2BoogieTranslator took 561.90 ms. Allocated memory is still 159.4 MB. Free memory was 133.4 MB in the beginning and 110.7 MB in the end (delta: 22.6 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-10-23 20:38:05,156 INFO L168 Benchmark]: Boogie Preprocessor took 94.62 ms. Allocated memory is still 159.4 MB. Free memory was 110.5 MB in the beginning and 140.7 MB in the end (delta: -30.2 MB). Peak memory consumption was 8.1 MB. Max. memory is 8.0 GB. [2020-10-23 20:38:05,157 INFO L168 Benchmark]: RCFGBuilder took 1001.75 ms. Allocated memory was 159.4 MB in the beginning and 191.9 MB in the end (delta: 32.5 MB). Free memory was 140.7 MB in the beginning and 166.3 MB in the end (delta: -25.5 MB). Peak memory consumption was 58.5 MB. Max. memory is 8.0 GB. [2020-10-23 20:38:05,157 INFO L168 Benchmark]: TraceAbstraction took 12058.99 ms. Allocated memory was 191.9 MB in the beginning and 332.4 MB in the end (delta: 140.5 MB). Free memory was 165.7 MB in the beginning and 117.6 MB in the end (delta: 48.1 MB). Peak memory consumption was 188.6 MB. Max. memory is 8.0 GB. [2020-10-23 20:38:05,160 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 159.4 MB. Free memory was 132.4 MB in the beginning and 132.3 MB in the end (delta: 102.4 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 561.90 ms. Allocated memory is still 159.4 MB. Free memory was 133.4 MB in the beginning and 110.7 MB in the end (delta: 22.6 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 94.62 ms. Allocated memory is still 159.4 MB. Free memory was 110.5 MB in the beginning and 140.7 MB in the end (delta: -30.2 MB). Peak memory consumption was 8.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1001.75 ms. Allocated memory was 159.4 MB in the beginning and 191.9 MB in the end (delta: 32.5 MB). Free memory was 140.7 MB in the beginning and 166.3 MB in the end (delta: -25.5 MB). Peak memory consumption was 58.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 12058.99 ms. Allocated memory was 191.9 MB in the beginning and 332.4 MB in the end (delta: 140.5 MB). Free memory was 165.7 MB in the beginning and 117.6 MB in the end (delta: 48.1 MB). Peak memory consumption was 188.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 992]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L1003] SLL* list = malloc(sizeof(SLL)); [L1004] list->next = ((void*)0) [L1005] list->prev = ((void*)0) [L1006] COND FALSE !(!(list != ((void*)0))) [L1006] COND FALSE !(__VERIFIER_nondet_int()) [L1006] list->inner = malloc(sizeof(SLL)) [L1006] EXPR list->inner [L1006] list->inner->next = ((void*)0) [L1006] EXPR list->inner [L1006] list->inner->inner = ((void*)0) [L1006] EXPR list->inner [L1006] EXPR list->inner != ((void*)0) || list->inner == ((void*)0) [L1006] COND FALSE !(!(list->inner != ((void*)0) || list->inner == ((void*)0))) [L1008] SLL* end = list; [L1011] COND FALSE !(__VERIFIER_nondet_int()) [L1022] end = ((void*)0) [L1023] end = list [L1026] COND FALSE !(!(((void*)0) != end)) [L1028] COND TRUE ((void*)0) != end [L1030] int len = 0; [L1031] EXPR end->inner [L1031] SLL* inner = end->inner; [L1032] COND TRUE ((void*)0) != inner [L1034] COND TRUE len == 0 [L1035] len = 1 [L1038] COND FALSE !(!(((void*)0) != inner)) [L1039] EXPR inner->inner [L1039] COND FALSE !(!(((void*)0) == inner->inner)) [L1040] EXPR inner->next [L1040] COND TRUE !(((void*)0) != inner->next) [L1040] CALL reach_error() [L992] COND FALSE !(0) [L992] __assert_fail ("0", "dll-01-1.c", 12, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 181 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 11.9s, OverallIterations: 14, TraceHistogramMax: 1, AutomataDifference: 8.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2176 SDtfs, 3230 SDslu, 6151 SDs, 0 SdLazy, 4653 SolverSat, 314 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 180 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 630 ImplicationChecksByTransitivity, 3.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=247occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 13 MinimizatonAttempts, 903 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...