/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/sll-circular-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 00:56:07,715 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 00:56:07,718 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 00:56:07,754 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-07 00:56:07,754 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-07 00:56:07,756 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-07 00:56:07,758 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-07 00:56:07,760 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-07 00:56:07,763 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-07 00:56:07,764 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-07 00:56:07,766 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-07 00:56:07,768 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-07 00:56:07,768 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 00:56:07,770 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 00:56:07,771 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 00:56:07,773 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 00:56:07,774 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 00:56:07,776 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 00:56:07,800 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 00:56:07,803 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 00:56:07,811 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 00:56:07,813 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 00:56:07,814 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 00:56:07,817 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 00:56:07,822 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-07 00:56:07,825 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-07 00:56:07,825 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-07 00:56:07,833 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-07 00:56:07,833 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-07 00:56:07,835 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-07 00:56:07,835 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-07 00:56:07,836 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-07 00:56:07,838 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-07 00:56:07,839 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-07 00:56:07,840 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-07 00:56:07,840 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-07 00:56:07,841 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-07 00:56:07,842 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-07 00:56:07,842 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 00:56:07,843 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 00:56:07,843 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 00:56:07,845 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-07 00:56:07,866 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 00:56:07,866 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 00:56:07,868 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 00:56:07,868 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 00:56:07,868 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 00:56:07,869 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 00:56:07,869 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 00:56:07,869 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 00:56:07,869 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 00:56:07,869 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 00:56:07,870 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 00:56:07,870 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 00:56:07,870 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 00:56:07,870 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 00:56:07,871 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 00:56:07,871 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 00:56:07,871 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 00:56:07,871 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 00:56:07,872 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 00:56:07,872 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 00:56:07,872 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 00:56:07,872 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 00:56:07,873 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-07 00:56:08,250 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 00:56:08,304 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 00:56:08,307 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 00:56:08,309 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 00:56:08,309 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 00:56:08,310 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-circular-2.i [2020-11-07 00:56:08,395 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f8445c27/5841c63e9e8d46478451bb53b11b6ead/FLAG9e6d27ac5 [2020-11-07 00:56:09,050 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 00:56:09,051 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-circular-2.i [2020-11-07 00:56:09,073 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f8445c27/5841c63e9e8d46478451bb53b11b6ead/FLAG9e6d27ac5 [2020-11-07 00:56:09,365 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f8445c27/5841c63e9e8d46478451bb53b11b6ead [2020-11-07 00:56:09,368 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 00:56:09,377 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 00:56:09,382 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 00:56:09,383 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 00:56:09,387 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 00:56:09,387 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:56:09" (1/1) ... [2020-11-07 00:56:09,391 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e84fa93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:09, skipping insertion in model container [2020-11-07 00:56:09,391 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:56:09" (1/1) ... [2020-11-07 00:56:09,401 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 00:56:09,464 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 00:56:09,914 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 00:56:09,932 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 00:56:10,015 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 00:56:10,097 INFO L208 MainTranslator]: Completed translation [2020-11-07 00:56:10,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:10 WrapperNode [2020-11-07 00:56:10,098 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 00:56:10,099 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 00:56:10,099 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 00:56:10,099 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 00:56:10,113 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:10" (1/1) ... [2020-11-07 00:56:10,137 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:10" (1/1) ... [2020-11-07 00:56:10,207 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:10" (1/1) ... [2020-11-07 00:56:10,207 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:10" (1/1) ... [2020-11-07 00:56:10,234 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:10" (1/1) ... [2020-11-07 00:56:10,246 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:10" (1/1) ... [2020-11-07 00:56:10,258 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:10" (1/1) ... [2020-11-07 00:56:10,270 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 00:56:10,273 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 00:56:10,273 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 00:56:10,273 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 00:56:10,274 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:10" (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 [2020-11-07 00:56:10,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 00:56:10,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 00:56:10,362 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 00:56:10,363 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 00:56:10,363 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-11-07 00:56:10,363 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-11-07 00:56:10,363 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-11-07 00:56:10,363 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-11-07 00:56:10,364 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-11-07 00:56:10,364 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-11-07 00:56:10,364 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-11-07 00:56:10,364 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-11-07 00:56:10,364 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-11-07 00:56:10,364 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-11-07 00:56:10,365 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-11-07 00:56:10,365 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-11-07 00:56:10,365 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-11-07 00:56:10,365 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-11-07 00:56:10,365 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-11-07 00:56:10,365 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-11-07 00:56:10,366 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-11-07 00:56:10,366 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-11-07 00:56:10,366 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-11-07 00:56:10,366 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-11-07 00:56:10,366 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-11-07 00:56:10,367 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-11-07 00:56:10,367 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-11-07 00:56:10,367 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-11-07 00:56:10,367 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-11-07 00:56:10,367 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-11-07 00:56:10,367 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-11-07 00:56:10,368 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-11-07 00:56:10,368 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-11-07 00:56:10,368 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-11-07 00:56:10,368 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-11-07 00:56:10,368 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-11-07 00:56:10,368 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-11-07 00:56:10,369 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-11-07 00:56:10,369 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-11-07 00:56:10,369 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-11-07 00:56:10,369 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-11-07 00:56:10,369 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-11-07 00:56:10,370 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-11-07 00:56:10,370 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-11-07 00:56:10,370 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-11-07 00:56:10,370 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-11-07 00:56:10,370 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-11-07 00:56:10,370 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-11-07 00:56:10,371 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-11-07 00:56:10,371 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-11-07 00:56:10,371 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-11-07 00:56:10,371 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-11-07 00:56:10,371 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-11-07 00:56:10,371 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-11-07 00:56:10,372 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-07 00:56:10,372 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-11-07 00:56:10,372 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-11-07 00:56:10,372 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-11-07 00:56:10,372 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-11-07 00:56:10,372 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-11-07 00:56:10,373 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-11-07 00:56:10,373 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-11-07 00:56:10,373 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-11-07 00:56:10,373 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 00:56:10,373 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-11-07 00:56:10,373 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-11-07 00:56:10,374 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-11-07 00:56:10,374 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-11-07 00:56:10,374 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-11-07 00:56:10,374 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-11-07 00:56:10,374 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-11-07 00:56:10,374 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-11-07 00:56:10,375 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-11-07 00:56:10,375 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-11-07 00:56:10,375 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-11-07 00:56:10,375 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-11-07 00:56:10,375 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-11-07 00:56:10,376 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-11-07 00:56:10,376 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-11-07 00:56:10,376 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-11-07 00:56:10,376 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-11-07 00:56:10,376 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-11-07 00:56:10,376 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-11-07 00:56:10,377 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-11-07 00:56:10,377 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-11-07 00:56:10,377 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-11-07 00:56:10,377 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-11-07 00:56:10,377 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-11-07 00:56:10,377 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-11-07 00:56:10,378 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-11-07 00:56:10,378 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-11-07 00:56:10,378 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-11-07 00:56:10,378 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-11-07 00:56:10,378 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-11-07 00:56:10,379 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-11-07 00:56:10,379 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-11-07 00:56:10,379 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-11-07 00:56:10,379 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-11-07 00:56:10,379 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-11-07 00:56:10,379 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-11-07 00:56:10,380 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-11-07 00:56:10,380 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-11-07 00:56:10,380 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-11-07 00:56:10,380 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-11-07 00:56:10,380 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-11-07 00:56:10,380 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-11-07 00:56:10,381 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-11-07 00:56:10,381 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-07 00:56:10,381 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 00:56:10,381 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-11-07 00:56:10,381 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-11-07 00:56:10,382 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 00:56:10,382 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 00:56:10,382 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 00:56:10,382 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-07 00:56:10,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-07 00:56:10,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 00:56:10,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-07 00:56:10,383 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 00:56:10,383 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 00:56:10,383 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 00:56:10,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 00:56:10,383 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 00:56:10,991 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 00:56:10,991 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-07 00:56:10,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:56:10 BoogieIcfgContainer [2020-11-07 00:56:10,993 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 00:56:10,996 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 00:56:10,996 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 00:56:11,000 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 00:56:11,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:56:09" (1/3) ... [2020-11-07 00:56:11,001 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32ec8f09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:56:11, skipping insertion in model container [2020-11-07 00:56:11,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:10" (2/3) ... [2020-11-07 00:56:11,002 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32ec8f09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:56:11, skipping insertion in model container [2020-11-07 00:56:11,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:56:10" (3/3) ... [2020-11-07 00:56:11,004 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-circular-2.i [2020-11-07 00:56:11,022 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 00:56:11,027 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 00:56:11,041 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 00:56:11,066 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 00:56:11,067 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 00:56:11,067 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-07 00:56:11,067 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 00:56:11,067 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 00:56:11,067 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 00:56:11,068 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 00:56:11,068 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 00:56:11,088 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states. [2020-11-07 00:56:11,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-07 00:56:11,099 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:56:11,100 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] [2020-11-07 00:56:11,100 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:56:11,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:56:11,107 INFO L82 PathProgramCache]: Analyzing trace with hash 1251730029, now seen corresponding path program 1 times [2020-11-07 00:56:11,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:56:11,117 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1466218669] [2020-11-07 00:56:11,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:56:11,214 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:56:11,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:56:11,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:56:11,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:56:11,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:56:11,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1466218669] [2020-11-07 00:56:11,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:56:11,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-07 00:56:11,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806193504] [2020-11-07 00:56:11,419 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-07 00:56:11,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:56:11,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-07 00:56:11,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-07 00:56:11,438 INFO L87 Difference]: Start difference. First operand 103 states. Second operand 3 states. [2020-11-07 00:56:11,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:56:11,724 INFO L93 Difference]: Finished difference Result 183 states and 226 transitions. [2020-11-07 00:56:11,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-07 00:56:11,726 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-11-07 00:56:11,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:56:11,736 INFO L225 Difference]: With dead ends: 183 [2020-11-07 00:56:11,736 INFO L226 Difference]: Without dead ends: 78 [2020-11-07 00:56:11,741 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 [2020-11-07 00:56:11,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-11-07 00:56:11,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-11-07 00:56:11,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-11-07 00:56:11,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 85 transitions. [2020-11-07 00:56:11,797 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 85 transitions. Word has length 26 [2020-11-07 00:56:11,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:56:11,797 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 85 transitions. [2020-11-07 00:56:11,797 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-07 00:56:11,798 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 85 transitions. [2020-11-07 00:56:11,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-07 00:56:11,799 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:56:11,799 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] [2020-11-07 00:56:11,799 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 00:56:11,800 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:56:11,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:56:11,801 INFO L82 PathProgramCache]: Analyzing trace with hash -548922730, now seen corresponding path program 1 times [2020-11-07 00:56:11,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:56:11,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [983594731] [2020-11-07 00:56:11,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:56:11,807 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:56:11,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:56:12,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:56:12,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:56:12,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:56:12,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [983594731] [2020-11-07 00:56:12,110 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:56:12,110 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-11-07 00:56:12,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681894489] [2020-11-07 00:56:12,112 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-07 00:56:12,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:56:12,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-07 00:56:12,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-11-07 00:56:12,113 INFO L87 Difference]: Start difference. First operand 78 states and 85 transitions. Second operand 10 states. [2020-11-07 00:56:12,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:56:12,785 INFO L93 Difference]: Finished difference Result 153 states and 165 transitions. [2020-11-07 00:56:12,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-07 00:56:12,786 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 28 [2020-11-07 00:56:12,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:56:12,788 INFO L225 Difference]: With dead ends: 153 [2020-11-07 00:56:12,789 INFO L226 Difference]: Without dead ends: 149 [2020-11-07 00:56:12,790 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2020-11-07 00:56:12,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-11-07 00:56:12,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 86. [2020-11-07 00:56:12,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-11-07 00:56:12,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 94 transitions. [2020-11-07 00:56:12,813 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 94 transitions. Word has length 28 [2020-11-07 00:56:12,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:56:12,814 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 94 transitions. [2020-11-07 00:56:12,814 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-07 00:56:12,814 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 94 transitions. [2020-11-07 00:56:12,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-11-07 00:56:12,815 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:56:12,815 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] [2020-11-07 00:56:12,816 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 00:56:12,816 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:56:12,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:56:12,816 INFO L82 PathProgramCache]: Analyzing trace with hash -2123355709, now seen corresponding path program 1 times [2020-11-07 00:56:12,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:56:12,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1924910310] [2020-11-07 00:56:12,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:56:12,822 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:56:12,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:56:12,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:56:12,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:56:12,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:56:12,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1924910310] [2020-11-07 00:56:12,994 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:56:12,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-07 00:56:12,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75364808] [2020-11-07 00:56:12,996 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-07 00:56:12,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:56:12,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-07 00:56:12,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-07 00:56:12,998 INFO L87 Difference]: Start difference. First operand 86 states and 94 transitions. Second operand 7 states. [2020-11-07 00:56:13,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:56:13,440 INFO L93 Difference]: Finished difference Result 124 states and 133 transitions. [2020-11-07 00:56:13,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-07 00:56:13,440 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 34 [2020-11-07 00:56:13,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:56:13,442 INFO L225 Difference]: With dead ends: 124 [2020-11-07 00:56:13,442 INFO L226 Difference]: Without dead ends: 120 [2020-11-07 00:56:13,443 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-11-07 00:56:13,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-11-07 00:56:13,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 85. [2020-11-07 00:56:13,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-11-07 00:56:13,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 92 transitions. [2020-11-07 00:56:13,462 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 92 transitions. Word has length 34 [2020-11-07 00:56:13,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:56:13,462 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 92 transitions. [2020-11-07 00:56:13,462 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-07 00:56:13,462 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 92 transitions. [2020-11-07 00:56:13,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-11-07 00:56:13,464 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:56:13,464 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] [2020-11-07 00:56:13,464 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 00:56:13,465 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:56:13,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:56:13,465 INFO L82 PathProgramCache]: Analyzing trace with hash -1498433490, now seen corresponding path program 1 times [2020-11-07 00:56:13,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:56:13,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [245758176] [2020-11-07 00:56:13,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:56:13,471 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:56:13,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:56:13,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:56:13,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:56:13,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:56:13,548 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [245758176] [2020-11-07 00:56:13,548 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:56:13,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 00:56:13,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105103820] [2020-11-07 00:56:13,549 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 00:56:13,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:56:13,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 00:56:13,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 00:56:13,550 INFO L87 Difference]: Start difference. First operand 85 states and 92 transitions. Second operand 4 states. [2020-11-07 00:56:13,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:56:13,733 INFO L93 Difference]: Finished difference Result 199 states and 218 transitions. [2020-11-07 00:56:13,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-07 00:56:13,734 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2020-11-07 00:56:13,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:56:13,736 INFO L225 Difference]: With dead ends: 199 [2020-11-07 00:56:13,736 INFO L226 Difference]: Without dead ends: 139 [2020-11-07 00:56:13,737 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 [2020-11-07 00:56:13,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-11-07 00:56:13,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 102. [2020-11-07 00:56:13,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-11-07 00:56:13,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 111 transitions. [2020-11-07 00:56:13,761 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 111 transitions. Word has length 39 [2020-11-07 00:56:13,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:56:13,762 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 111 transitions. [2020-11-07 00:56:13,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 00:56:13,762 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 111 transitions. [2020-11-07 00:56:13,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-11-07 00:56:13,764 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:56:13,764 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] [2020-11-07 00:56:13,764 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-07 00:56:13,764 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:56:13,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:56:13,765 INFO L82 PathProgramCache]: Analyzing trace with hash -491950303, now seen corresponding path program 1 times [2020-11-07 00:56:13,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:56:13,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1615190879] [2020-11-07 00:56:13,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:56:14,198 WARN L194 SmtUtils]: Spent 427.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 105 [2020-11-07 00:56:14,279 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-07 00:56:14,386 WARN L194 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-11-07 00:56:14,387 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-07 00:56:14,395 INFO L547 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-07 00:56:14,492 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-07 00:56:14,494 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-11-07 00:56:14,494 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:168, output treesize:157 [2020-11-07 00:56:14,605 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-11-07 00:56:14,610 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:56:14,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:56:14,672 ERROR L253 erpolLogProxyWrapper]: Interpolant 13 not inductive [2020-11-07 00:56:14,698 ERROR L275 FreeRefinementEngine]: Caught unknown exception: generated interpolants did not pass sanity check [2020-11-07 00:56:14,698 WARN L340 FreeRefinementEngine]: Global settings require throwing the following exception [2020-11-07 00:56:14,698 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-07 00:56:14,699 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:329) 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:343) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:149) 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$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-11-07 00:56:14,704 INFO L168 Benchmark]: Toolchain (without parser) took 5332.98 ms. Allocated memory was 163.6 MB in the beginning and 207.6 MB in the end (delta: 44.0 MB). Free memory was 138.3 MB in the beginning and 75.3 MB in the end (delta: 63.0 MB). Peak memory consumption was 107.7 MB. Max. memory is 8.0 GB. [2020-11-07 00:56:14,705 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 163.6 MB. Free memory was 138.2 MB in the beginning and 138.1 MB in the end (delta: 80.2 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 00:56:14,706 INFO L168 Benchmark]: CACSL2BoogieTranslator took 715.98 ms. Allocated memory is still 163.6 MB. Free memory was 137.8 MB in the beginning and 115.9 MB in the end (delta: 21.9 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-11-07 00:56:14,707 INFO L168 Benchmark]: Boogie Preprocessor took 172.94 ms. Allocated memory is still 163.6 MB. Free memory was 115.9 MB in the beginning and 145.1 MB in the end (delta: -29.2 MB). Peak memory consumption was 3.3 MB. Max. memory is 8.0 GB. [2020-11-07 00:56:14,708 INFO L168 Benchmark]: RCFGBuilder took 720.65 ms. Allocated memory is still 163.6 MB. Free memory was 145.1 MB in the beginning and 98.5 MB in the end (delta: 46.7 MB). Peak memory consumption was 46.1 MB. Max. memory is 8.0 GB. [2020-11-07 00:56:14,709 INFO L168 Benchmark]: TraceAbstraction took 3706.94 ms. Allocated memory was 163.6 MB in the beginning and 207.6 MB in the end (delta: 44.0 MB). Free memory was 98.5 MB in the beginning and 75.3 MB in the end (delta: 23.2 MB). Peak memory consumption was 68.8 MB. Max. memory is 8.0 GB. [2020-11-07 00:56:14,714 INFO L339 ainManager$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 163.6 MB. Free memory was 138.2 MB in the beginning and 138.1 MB in the end (delta: 80.2 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 715.98 ms. Allocated memory is still 163.6 MB. Free memory was 137.8 MB in the beginning and 115.9 MB in the end (delta: 21.9 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 172.94 ms. Allocated memory is still 163.6 MB. Free memory was 115.9 MB in the beginning and 145.1 MB in the end (delta: -29.2 MB). Peak memory consumption was 3.3 MB. Max. memory is 8.0 GB. * RCFGBuilder took 720.65 ms. Allocated memory is still 163.6 MB. Free memory was 145.1 MB in the beginning and 98.5 MB in the end (delta: 46.7 MB). Peak memory consumption was 46.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3706.94 ms. Allocated memory was 163.6 MB in the beginning and 207.6 MB in the end (delta: 44.0 MB). Free memory was 98.5 MB in the beginning and 75.3 MB in the end (delta: 23.2 MB). Peak memory consumption was 68.8 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...