/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-circular-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 20:37:55,425 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 20:37:55,428 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 20:37:55,468 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 20:37:55,468 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 20:37:55,470 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 20:37:55,472 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 20:37:55,476 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 20:37:55,479 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 20:37:55,480 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 20:37:55,482 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 20:37:55,485 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 20:37:55,485 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 20:37:55,487 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 20:37:55,489 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 20:37:55,490 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 20:37:55,492 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 20:37:55,493 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 20:37:55,509 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 20:37:55,512 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 20:37:55,514 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 20:37:55,519 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 20:37:55,520 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 20:37:55,521 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 20:37:55,528 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 20:37:55,528 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 20:37:55,529 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 20:37:55,530 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 20:37:55,531 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 20:37:55,532 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 20:37:55,532 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 20:37:55,533 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 20:37:55,534 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 20:37:55,536 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 20:37:55,537 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 20:37:55,537 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 20:37:55,538 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 20:37:55,539 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 20:37:55,539 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 20:37:55,540 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 20:37:55,541 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 20:37:55,542 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 20:37:55,555 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 20:37:55,556 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 20:37:55,558 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 20:37:55,558 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 20:37:55,558 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 20:37:55,559 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 20:37:55,559 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 20:37:55,559 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 20:37:55,559 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 20:37:55,560 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 20:37:55,560 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 20:37:55,560 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 20:37:55,560 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 20:37:55,561 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 20:37:55,561 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 20:37:55,561 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 20:37:55,561 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 20:37:55,562 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 20:37:55,562 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 20:37:55,562 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 20:37:55,563 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 20:37:55,563 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 20:37:55,563 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 20:37:55,978 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 20:37:56,023 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 20:37:56,027 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 20:37:56,028 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 20:37:56,029 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 20:37:56,030 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-circular-1.i [2020-10-23 20:37:56,132 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/366f6e7ac/ca8c3b5d7e854a44a6f324eba06e6458/FLAG1deafea7b [2020-10-23 20:37:57,015 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 20:37:57,016 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-circular-1.i [2020-10-23 20:37:57,040 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/366f6e7ac/ca8c3b5d7e854a44a6f324eba06e6458/FLAG1deafea7b [2020-10-23 20:37:57,240 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/366f6e7ac/ca8c3b5d7e854a44a6f324eba06e6458 [2020-10-23 20:37:57,243 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 20:37:57,251 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 20:37:57,253 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 20:37:57,254 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 20:37:57,258 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 20:37:57,259 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:37:57" (1/1) ... [2020-10-23 20:37:57,264 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21db4cf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:37:57, skipping insertion in model container [2020-10-23 20:37:57,264 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:37:57" (1/1) ... [2020-10-23 20:37:57,274 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 20:37:57,316 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 20:37:57,715 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:37:57,731 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 20:37:57,787 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:37:57,850 INFO L208 MainTranslator]: Completed translation [2020-10-23 20:37:57,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:37:57 WrapperNode [2020-10-23 20:37:57,851 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 20:37:57,853 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 20:37:57,853 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 20:37:57,853 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 20:37:57,868 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:37:57" (1/1) ... [2020-10-23 20:37:57,868 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:37:57" (1/1) ... [2020-10-23 20:37:57,884 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:37:57" (1/1) ... [2020-10-23 20:37:57,885 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:37:57" (1/1) ... [2020-10-23 20:37:57,928 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:37:57" (1/1) ... [2020-10-23 20:37:57,938 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:37:57" (1/1) ... [2020-10-23 20:37:57,942 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:37:57" (1/1) ... [2020-10-23 20:37:57,949 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 20:37:57,950 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 20:37:57,950 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 20:37:57,950 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 20:37:57,951 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:37:57" (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 20:37:58,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 20:37:58,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 20:37:58,037 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 20:37:58,037 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 20:37:58,038 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-23 20:37:58,038 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-23 20:37:58,038 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-23 20:37:58,038 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-23 20:37:58,038 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-23 20:37:58,038 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-23 20:37:58,039 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-23 20:37:58,039 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-23 20:37:58,039 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-23 20:37:58,039 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-23 20:37:58,039 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-23 20:37:58,039 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-23 20:37:58,040 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-23 20:37:58,040 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-23 20:37:58,040 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-23 20:37:58,040 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-23 20:37:58,040 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-23 20:37:58,040 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-23 20:37:58,041 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-23 20:37:58,041 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-23 20:37:58,041 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-23 20:37:58,041 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-23 20:37:58,041 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-23 20:37:58,041 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-23 20:37:58,042 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-23 20:37:58,042 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-23 20:37:58,042 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-23 20:37:58,042 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-23 20:37:58,042 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-23 20:37:58,042 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-23 20:37:58,043 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-23 20:37:58,043 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-23 20:37:58,043 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-23 20:37:58,043 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-23 20:37:58,043 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-23 20:37:58,043 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-23 20:37:58,044 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-23 20:37:58,044 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-23 20:37:58,044 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-23 20:37:58,044 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-23 20:37:58,044 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-23 20:37:58,044 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-23 20:37:58,044 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-23 20:37:58,045 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-23 20:37:58,045 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-23 20:37:58,045 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-23 20:37:58,045 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-23 20:37:58,045 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-23 20:37:58,045 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-23 20:37:58,045 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-23 20:37:58,046 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 20:37:58,046 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-23 20:37:58,046 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-23 20:37:58,046 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-23 20:37:58,046 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-23 20:37:58,046 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-23 20:37:58,047 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-23 20:37:58,047 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-23 20:37:58,047 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-23 20:37:58,047 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 20:37:58,047 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-23 20:37:58,047 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-23 20:37:58,048 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-23 20:37:58,048 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-23 20:37:58,048 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-23 20:37:58,048 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-23 20:37:58,048 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-23 20:37:58,048 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-23 20:37:58,049 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-23 20:37:58,049 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-23 20:37:58,049 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-23 20:37:58,049 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-23 20:37:58,049 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-23 20:37:58,049 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-23 20:37:58,050 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-23 20:37:58,050 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-23 20:37:58,050 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-23 20:37:58,050 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-23 20:37:58,050 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-23 20:37:58,050 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-23 20:37:58,051 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-23 20:37:58,051 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-23 20:37:58,051 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-23 20:37:58,051 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-23 20:37:58,051 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-23 20:37:58,051 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-23 20:37:58,052 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-23 20:37:58,052 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-23 20:37:58,052 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-23 20:37:58,052 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-23 20:37:58,052 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-23 20:37:58,052 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-23 20:37:58,053 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-23 20:37:58,053 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-23 20:37:58,053 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-23 20:37:58,053 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-23 20:37:58,053 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-23 20:37:58,053 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-23 20:37:58,054 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-23 20:37:58,054 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-23 20:37:58,054 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-23 20:37:58,054 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-23 20:37:58,054 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-23 20:37:58,054 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 20:37:58,054 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 20:37:58,055 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-23 20:37:58,055 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-23 20:37:58,055 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 20:37:58,055 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 20:37:58,055 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 20:37:58,055 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 20:37:58,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-23 20:37:58,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 20:37:58,056 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-23 20:37:58,056 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 20:37:58,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 20:37:58,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 20:37:58,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 20:37:58,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 20:37:58,696 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 20:37:58,696 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-23 20:37:58,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:37:58 BoogieIcfgContainer [2020-10-23 20:37:58,699 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 20:37:58,701 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 20:37:58,701 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 20:37:58,705 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 20:37:58,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:37:57" (1/3) ... [2020-10-23 20:37:58,706 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7360dd04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:37:58, skipping insertion in model container [2020-10-23 20:37:58,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:37:57" (2/3) ... [2020-10-23 20:37:58,707 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7360dd04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:37:58, skipping insertion in model container [2020-10-23 20:37:58,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:37:58" (3/3) ... [2020-10-23 20:37:58,709 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-circular-1.i [2020-10-23 20:37:58,723 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 20:37:58,730 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 20:37:58,746 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 20:37:58,774 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 20:37:58,775 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 20:37:58,775 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 20:37:58,775 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 20:37:58,775 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 20:37:58,775 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 20:37:58,776 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 20:37:58,776 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 20:37:58,796 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states. [2020-10-23 20:37:58,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-23 20:37:58,807 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:37:58,808 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:37:58,809 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:37:58,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:37:58,816 INFO L82 PathProgramCache]: Analyzing trace with hash 2135477645, now seen corresponding path program 1 times [2020-10-23 20:37:58,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:37:58,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1102471393] [2020-10-23 20:37:58,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:37:58,932 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:37:58,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:59,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:37:59,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:59,143 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 20:37:59,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1102471393] [2020-10-23 20:37:59,148 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:37:59,148 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-23 20:37:59,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252141889] [2020-10-23 20:37:59,154 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 20:37:59,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:37:59,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 20:37:59,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 20:37:59,174 INFO L87 Difference]: Start difference. First operand 106 states. Second operand 3 states. [2020-10-23 20:37:59,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:37:59,483 INFO L93 Difference]: Finished difference Result 189 states and 232 transitions. [2020-10-23 20:37:59,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 20:37:59,485 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-10-23 20:37:59,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:37:59,496 INFO L225 Difference]: With dead ends: 189 [2020-10-23 20:37:59,497 INFO L226 Difference]: Without dead ends: 81 [2020-10-23 20:37:59,501 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 20:37:59,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-23 20:37:59,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2020-10-23 20:37:59,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-23 20:37:59,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 88 transitions. [2020-10-23 20:37:59,561 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 88 transitions. Word has length 26 [2020-10-23 20:37:59,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:37:59,561 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 88 transitions. [2020-10-23 20:37:59,562 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 20:37:59,562 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 88 transitions. [2020-10-23 20:37:59,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-23 20:37:59,563 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:37:59,563 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:37:59,564 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 20:37:59,564 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:37:59,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:37:59,565 INFO L82 PathProgramCache]: Analyzing trace with hash 1141927283, now seen corresponding path program 1 times [2020-10-23 20:37:59,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:37:59,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1713542418] [2020-10-23 20:37:59,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:37:59,571 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:37:59,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:59,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:37:59,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:59,866 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 20:37:59,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1713542418] [2020-10-23 20:37:59,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:37:59,868 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 20:37:59,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846202001] [2020-10-23 20:37:59,869 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 20:37:59,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:37:59,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 20:37:59,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-23 20:37:59,870 INFO L87 Difference]: Start difference. First operand 81 states and 88 transitions. Second operand 10 states. [2020-10-23 20:38:00,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:38:00,485 INFO L93 Difference]: Finished difference Result 159 states and 171 transitions. [2020-10-23 20:38:00,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-23 20:38:00,486 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 28 [2020-10-23 20:38:00,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:38:00,489 INFO L225 Difference]: With dead ends: 159 [2020-10-23 20:38:00,489 INFO L226 Difference]: Without dead ends: 155 [2020-10-23 20:38:00,491 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2020-10-23 20:38:00,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-10-23 20:38:00,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 89. [2020-10-23 20:38:00,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-23 20:38:00,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 97 transitions. [2020-10-23 20:38:00,514 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 97 transitions. Word has length 28 [2020-10-23 20:38:00,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:38:00,515 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 97 transitions. [2020-10-23 20:38:00,515 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 20:38:00,515 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 97 transitions. [2020-10-23 20:38:00,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-23 20:38:00,517 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:38:00,517 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:38:00,517 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 20:38:00,517 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:38:00,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:38:00,518 INFO L82 PathProgramCache]: Analyzing trace with hash 707662645, now seen corresponding path program 1 times [2020-10-23 20:38:00,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:38:00,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [366071972] [2020-10-23 20:38:00,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:38:00,524 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:38:00,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:00,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:38:00,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:00,733 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 20:38:00,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [366071972] [2020-10-23 20:38:00,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:38:00,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-23 20:38:00,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885948137] [2020-10-23 20:38:00,734 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-23 20:38:00,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:38:00,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-23 20:38:00,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-10-23 20:38:00,736 INFO L87 Difference]: Start difference. First operand 89 states and 97 transitions. Second operand 12 states. [2020-10-23 20:38:01,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:38:01,282 INFO L93 Difference]: Finished difference Result 128 states and 140 transitions. [2020-10-23 20:38:01,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-23 20:38:01,283 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 37 [2020-10-23 20:38:01,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:38:01,285 INFO L225 Difference]: With dead ends: 128 [2020-10-23 20:38:01,285 INFO L226 Difference]: Without dead ends: 124 [2020-10-23 20:38:01,286 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 20:38:01,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-23 20:38:01,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 109. [2020-10-23 20:38:01,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-23 20:38:01,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 120 transitions. [2020-10-23 20:38:01,314 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 120 transitions. Word has length 37 [2020-10-23 20:38:01,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:38:01,315 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 120 transitions. [2020-10-23 20:38:01,315 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-23 20:38:01,315 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 120 transitions. [2020-10-23 20:38:01,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-23 20:38:01,317 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:38:01,317 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:38:01,317 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 20:38:01,318 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:38:01,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:38:01,318 INFO L82 PathProgramCache]: Analyzing trace with hash -339685249, now seen corresponding path program 1 times [2020-10-23 20:38:01,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:38:01,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [487258885] [2020-10-23 20:38:01,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:38:01,324 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:38:01,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:01,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:38:01,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:01,429 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 20:38:01,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [487258885] [2020-10-23 20:38:01,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:38:01,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 20:38:01,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519936563] [2020-10-23 20:38:01,432 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 20:38:01,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:38:01,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 20:38:01,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 20:38:01,435 INFO L87 Difference]: Start difference. First operand 109 states and 120 transitions. Second operand 4 states. [2020-10-23 20:38:01,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:38:01,639 INFO L93 Difference]: Finished difference Result 235 states and 260 transitions. [2020-10-23 20:38:01,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-23 20:38:01,640 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2020-10-23 20:38:01,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:38:01,643 INFO L225 Difference]: With dead ends: 235 [2020-10-23 20:38:01,644 INFO L226 Difference]: Without dead ends: 167 [2020-10-23 20:38:01,645 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 20:38:01,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-10-23 20:38:01,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 129. [2020-10-23 20:38:01,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-23 20:38:01,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 141 transitions. [2020-10-23 20:38:01,706 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 141 transitions. Word has length 42 [2020-10-23 20:38:01,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:38:01,707 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 141 transitions. [2020-10-23 20:38:01,707 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 20:38:01,707 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 141 transitions. [2020-10-23 20:38:01,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-23 20:38:01,710 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:38:01,710 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] [2020-10-23 20:38:01,711 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 20:38:01,711 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:38:01,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:38:01,711 INFO L82 PathProgramCache]: Analyzing trace with hash -2082681811, now seen corresponding path program 1 times [2020-10-23 20:38:01,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:38:01,712 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [513924306] [2020-10-23 20:38:01,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:38:01,716 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:38:01,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:02,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:38:02,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:02,116 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 20:38:02,117 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [513924306] [2020-10-23 20:38:02,117 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:38:02,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-23 20:38:02,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084265275] [2020-10-23 20:38:02,118 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-23 20:38:02,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:38:02,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-23 20:38:02,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-23 20:38:02,119 INFO L87 Difference]: Start difference. First operand 129 states and 141 transitions. Second operand 14 states. [2020-10-23 20:38:03,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:38:03,156 INFO L93 Difference]: Finished difference Result 219 states and 236 transitions. [2020-10-23 20:38:03,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-23 20:38:03,157 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 43 [2020-10-23 20:38:03,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:38:03,159 INFO L225 Difference]: With dead ends: 219 [2020-10-23 20:38:03,159 INFO L226 Difference]: Without dead ends: 187 [2020-10-23 20:38:03,161 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=190, Invalid=622, Unknown=0, NotChecked=0, Total=812 [2020-10-23 20:38:03,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-10-23 20:38:03,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 137. [2020-10-23 20:38:03,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-23 20:38:03,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 149 transitions. [2020-10-23 20:38:03,197 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 149 transitions. Word has length 43 [2020-10-23 20:38:03,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:38:03,197 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 149 transitions. [2020-10-23 20:38:03,198 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-23 20:38:03,198 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 149 transitions. [2020-10-23 20:38:03,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-23 20:38:03,199 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:38:03,200 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:38:03,200 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-23 20:38:03,200 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:38:03,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:38:03,201 INFO L82 PathProgramCache]: Analyzing trace with hash 987395855, now seen corresponding path program 1 times [2020-10-23 20:38:03,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:38:03,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1333727073] [2020-10-23 20:38:03,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:38:04,194 WARN L193 SmtUtils]: Spent 987.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 132 [2020-10-23 20:38:04,314 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:04,596 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-23 20:38:04,597 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:38:04,608 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:04,824 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-23 20:38:04,825 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:38:04,834 INFO L545 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:05,035 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-23 20:38:05,035 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:38:05,037 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:05,037 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:319, output treesize:325 [2020-10-23 20:38:05,231 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-23 20:38:06,125 WARN L193 SmtUtils]: Spent 885.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 133 [2020-10-23 20:38:06,178 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:06,366 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-23 20:38:06,367 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:38:06,375 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:06,582 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-23 20:38:06,583 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:38:06,594 INFO L545 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:06,787 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-23 20:38:06,787 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:38:06,789 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:06,789 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:319, output treesize:325 [2020-10-23 20:38:06,964 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-23 20:38:06,976 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:38:06,981 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:38:07,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:07,075 ERROR L253 erpolLogProxyWrapper]: Interpolant 16 not inductive [2020-10-23 20:38:07,097 ERROR L275 FreeRefinementEngine]: Caught unknown exception: generated interpolants did not pass sanity check [2020-10-23 20:38:07,097 WARN L340 FreeRefinementEngine]: Global settings require throwing the following exception [2020-10-23 20:38:07,097 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-23 20:38:07,098 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: generated interpolants did not pass sanity check at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:876) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:392) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:386) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:191) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:285) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:166) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:326) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:228) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.Interpolator.generateInterpolantsCraigNested(Interpolator.java:154) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.Interpolator.generateInterpolants(Interpolator.java:108) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.acceleratedInterpolationCore(AcceleratedInterpolation.java:322) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:147) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:241) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:341) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-10-23 20:38:07,105 INFO L168 Benchmark]: Toolchain (without parser) took 9856.91 ms. Allocated memory was 157.3 MB in the beginning and 234.9 MB in the end (delta: 77.6 MB). Free memory was 132.6 MB in the beginning and 105.1 MB in the end (delta: 27.6 MB). Peak memory consumption was 106.3 MB. Max. memory is 8.0 GB. [2020-10-23 20:38:07,106 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 157.3 MB. Free memory was 131.8 MB in the beginning and 131.6 MB in the end (delta: 120.5 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 20:38:07,110 INFO L168 Benchmark]: CACSL2BoogieTranslator took 598.49 ms. Allocated memory is still 157.3 MB. Free memory was 132.0 MB in the beginning and 110.3 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2020-10-23 20:38:07,111 INFO L168 Benchmark]: Boogie Preprocessor took 96.09 ms. Allocated memory is still 157.3 MB. Free memory was 110.3 MB in the beginning and 139.2 MB in the end (delta: -28.9 MB). Peak memory consumption was 5.6 MB. Max. memory is 8.0 GB. [2020-10-23 20:38:07,111 INFO L168 Benchmark]: RCFGBuilder took 749.06 ms. Allocated memory is still 157.3 MB. Free memory was 139.2 MB in the beginning and 92.0 MB in the end (delta: 47.2 MB). Peak memory consumption was 47.2 MB. Max. memory is 8.0 GB. [2020-10-23 20:38:07,112 INFO L168 Benchmark]: TraceAbstraction took 8400.51 ms. Allocated memory was 157.3 MB in the beginning and 234.9 MB in the end (delta: 77.6 MB). Free memory was 91.5 MB in the beginning and 105.1 MB in the end (delta: -13.6 MB). Peak memory consumption was 64.0 MB. Max. memory is 8.0 GB. [2020-10-23 20:38:07,116 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 157.3 MB. Free memory was 131.8 MB in the beginning and 131.6 MB in the end (delta: 120.5 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 598.49 ms. Allocated memory is still 157.3 MB. Free memory was 132.0 MB in the beginning and 110.3 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 96.09 ms. Allocated memory is still 157.3 MB. Free memory was 110.3 MB in the beginning and 139.2 MB in the end (delta: -28.9 MB). Peak memory consumption was 5.6 MB. Max. memory is 8.0 GB. * RCFGBuilder took 749.06 ms. Allocated memory is still 157.3 MB. Free memory was 139.2 MB in the beginning and 92.0 MB in the end (delta: 47.2 MB). Peak memory consumption was 47.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 8400.51 ms. Allocated memory was 157.3 MB in the beginning and 234.9 MB in the end (delta: 77.6 MB). Free memory was 91.5 MB in the beginning and 105.1 MB in the end (delta: -13.6 MB). Peak memory consumption was 64.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: generated interpolants did not pass sanity check de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: generated interpolants did not pass sanity check: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...