/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/sll-circular-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 16:13:38,533 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 16:13:38,539 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 16:13:38,585 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 16:13:38,586 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 16:13:38,588 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 16:13:38,590 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 16:13:38,593 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 16:13:38,596 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 16:13:38,597 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 16:13:38,599 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 16:13:38,601 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 16:13:38,602 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 16:13:38,603 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 16:13:38,605 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 16:13:38,607 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 16:13:38,625 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 16:13:38,627 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 16:13:38,632 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 16:13:38,639 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 16:13:38,641 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 16:13:38,643 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 16:13:38,645 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 16:13:38,646 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 16:13:38,650 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 16:13:38,650 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 16:13:38,651 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 16:13:38,652 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 16:13:38,653 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 16:13:38,654 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 16:13:38,655 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 16:13:38,656 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 16:13:38,657 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 16:13:38,659 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 16:13:38,660 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 16:13:38,661 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 16:13:38,662 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 16:13:38,662 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 16:13:38,663 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 16:13:38,664 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 16:13:38,665 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 16:13:38,667 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2021-02-21 16:13:38,706 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 16:13:38,706 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 16:13:38,709 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-21 16:13:38,709 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-21 16:13:38,709 INFO L138 SettingsManager]: * Use SBE=true [2021-02-21 16:13:38,710 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 16:13:38,710 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 16:13:38,710 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 16:13:38,710 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 16:13:38,710 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 16:13:38,711 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 16:13:38,711 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 16:13:38,711 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 16:13:38,712 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 16:13:38,712 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 16:13:38,712 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 16:13:38,712 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 16:13:38,713 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 16:13:38,713 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-21 16:13:38,713 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 16:13:38,713 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 16:13:38,714 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 16:13:38,714 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-21 16:13:38,714 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-21 16:13:38,714 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-21 16:13:38,715 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-21 16:13:38,715 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 16:13:38,715 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-21 16:13:38,715 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 16:13:39,201 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 16:13:39,233 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 16:13:39,238 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 16:13:39,240 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 16:13:39,241 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 16:13:39,242 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-circular-2.i [2021-02-21 16:13:39,364 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48a825bd8/f446ee0423754666848906a093379c73/FLAGb73e25db4 [2021-02-21 16:13:40,312 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 16:13:40,316 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-circular-2.i [2021-02-21 16:13:40,343 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48a825bd8/f446ee0423754666848906a093379c73/FLAGb73e25db4 [2021-02-21 16:13:40,499 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48a825bd8/f446ee0423754666848906a093379c73 [2021-02-21 16:13:40,503 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 16:13:40,516 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 16:13:40,518 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 16:13:40,518 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 16:13:40,527 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 16:13:40,529 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 04:13:40" (1/1) ... [2021-02-21 16:13:40,532 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1302403f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:13:40, skipping insertion in model container [2021-02-21 16:13:40,532 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 04:13:40" (1/1) ... [2021-02-21 16:13:40,542 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 16:13:40,614 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 16:13:40,940 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-circular-2.i[22324,22337] [2021-02-21 16:13:40,949 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-circular-2.i[22430,22443] [2021-02-21 16:13:40,952 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-circular-2.i[22554,22567] [2021-02-21 16:13:40,959 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 16:13:40,978 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 16:13:41,076 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-circular-2.i[22324,22337] [2021-02-21 16:13:41,080 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-circular-2.i[22430,22443] [2021-02-21 16:13:41,086 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-circular-2.i[22554,22567] [2021-02-21 16:13:41,097 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 16:13:41,163 INFO L208 MainTranslator]: Completed translation [2021-02-21 16:13:41,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:13:41 WrapperNode [2021-02-21 16:13:41,164 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 16:13:41,166 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 16:13:41,166 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 16:13:41,166 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 16:13:41,233 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:13:41" (1/1) ... [2021-02-21 16:13:41,234 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:13:41" (1/1) ... [2021-02-21 16:13:41,252 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:13:41" (1/1) ... [2021-02-21 16:13:41,253 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:13:41" (1/1) ... [2021-02-21 16:13:41,273 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:13:41" (1/1) ... [2021-02-21 16:13:41,284 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:13:41" (1/1) ... [2021-02-21 16:13:41,289 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:13:41" (1/1) ... [2021-02-21 16:13:41,296 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 16:13:41,297 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 16:13:41,298 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 16:13:41,298 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 16:13:41,299 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:13:41" (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 [2021-02-21 16:13:41,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 16:13:41,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 16:13:41,423 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 16:13:41,423 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 16:13:41,424 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-02-21 16:13:41,424 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-02-21 16:13:41,424 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-02-21 16:13:41,424 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-02-21 16:13:41,425 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-02-21 16:13:41,425 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-02-21 16:13:41,428 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-02-21 16:13:41,428 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-02-21 16:13:41,429 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-02-21 16:13:41,429 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-02-21 16:13:41,429 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-02-21 16:13:41,429 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-02-21 16:13:41,429 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-02-21 16:13:41,430 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-02-21 16:13:41,430 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-02-21 16:13:41,430 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-02-21 16:13:41,430 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-02-21 16:13:41,430 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-02-21 16:13:41,430 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-02-21 16:13:41,431 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-02-21 16:13:41,431 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-02-21 16:13:41,431 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-02-21 16:13:41,431 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-02-21 16:13:41,431 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-02-21 16:13:41,431 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-02-21 16:13:41,432 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-02-21 16:13:41,432 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-02-21 16:13:41,432 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-02-21 16:13:41,432 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-02-21 16:13:41,432 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-02-21 16:13:41,432 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-02-21 16:13:41,433 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-02-21 16:13:41,433 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-02-21 16:13:41,433 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-02-21 16:13:41,433 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-02-21 16:13:41,433 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-02-21 16:13:41,433 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-02-21 16:13:41,434 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-02-21 16:13:41,434 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-02-21 16:13:41,434 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-02-21 16:13:41,434 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-02-21 16:13:41,434 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-02-21 16:13:41,434 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-02-21 16:13:41,435 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-02-21 16:13:41,435 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-02-21 16:13:41,435 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-02-21 16:13:41,435 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-02-21 16:13:41,435 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-02-21 16:13:41,435 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-02-21 16:13:41,435 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-02-21 16:13:41,436 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 16:13:41,436 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-02-21 16:13:41,436 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-02-21 16:13:41,436 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 16:13:41,436 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-02-21 16:13:41,436 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-02-21 16:13:41,437 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-02-21 16:13:41,437 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-02-21 16:13:41,437 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-02-21 16:13:41,437 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 16:13:41,437 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-02-21 16:13:41,437 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-02-21 16:13:41,437 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-02-21 16:13:41,438 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-02-21 16:13:41,438 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-02-21 16:13:41,438 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-02-21 16:13:41,438 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-02-21 16:13:41,438 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-02-21 16:13:41,438 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-02-21 16:13:41,439 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-02-21 16:13:41,439 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-02-21 16:13:41,439 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-02-21 16:13:41,439 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-02-21 16:13:41,439 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-02-21 16:13:41,440 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-02-21 16:13:41,440 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-02-21 16:13:41,440 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-02-21 16:13:41,440 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-02-21 16:13:41,440 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-02-21 16:13:41,440 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-02-21 16:13:41,441 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-02-21 16:13:41,441 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-02-21 16:13:41,441 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-02-21 16:13:41,441 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-02-21 16:13:41,441 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-02-21 16:13:41,441 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-02-21 16:13:41,442 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-02-21 16:13:41,442 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-02-21 16:13:41,442 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-02-21 16:13:41,442 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-02-21 16:13:41,442 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-02-21 16:13:41,442 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-02-21 16:13:41,443 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-02-21 16:13:41,443 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-02-21 16:13:41,443 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-02-21 16:13:41,443 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-02-21 16:13:41,443 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-02-21 16:13:41,444 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-02-21 16:13:41,444 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-02-21 16:13:41,444 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-02-21 16:13:41,444 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-02-21 16:13:41,444 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-02-21 16:13:41,444 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-02-21 16:13:41,445 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 16:13:41,445 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 16:13:41,445 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-21 16:13:41,445 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-21 16:13:41,445 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 16:13:41,446 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 16:13:41,446 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 16:13:41,446 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 16:13:41,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 16:13:41,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 16:13:41,446 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 16:13:41,447 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 16:13:41,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 16:13:41,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 16:13:41,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 16:13:41,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 16:13:42,033 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 16:13:42,033 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-02-21 16:13:42,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 04:13:42 BoogieIcfgContainer [2021-02-21 16:13:42,036 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 16:13:42,038 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 16:13:42,039 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 16:13:42,043 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 16:13:42,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 04:13:40" (1/3) ... [2021-02-21 16:13:42,045 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f5d95ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 04:13:42, skipping insertion in model container [2021-02-21 16:13:42,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:13:41" (2/3) ... [2021-02-21 16:13:42,046 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f5d95ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 04:13:42, skipping insertion in model container [2021-02-21 16:13:42,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 04:13:42" (3/3) ... [2021-02-21 16:13:42,048 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-circular-2.i [2021-02-21 16:13:42,058 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-21 16:13:42,066 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2021-02-21 16:13:42,094 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-02-21 16:13:42,134 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 16:13:42,134 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 16:13:42,135 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-21 16:13:42,135 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 16:13:42,135 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 16:13:42,135 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 16:13:42,135 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 16:13:42,135 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 16:13:42,160 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2021-02-21 16:13:42,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-02-21 16:13:42,169 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:13:42,170 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 16:13:42,171 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:13:42,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:13:42,180 INFO L82 PathProgramCache]: Analyzing trace with hash -1187458044, now seen corresponding path program 1 times [2021-02-21 16:13:42,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:13:42,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058177909] [2021-02-21 16:13:42,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:13:42,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:13:42,537 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:42,540 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:13:42,542 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:42,544 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:13:42,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:13:42,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:13:42,677 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:42,678 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:13:42,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:13:42,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058177909] [2021-02-21 16:13:42,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:13:42,689 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 16:13:42,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994905656] [2021-02-21 16:13:42,700 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 16:13:42,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:13:42,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 16:13:42,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 16:13:42,736 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 3 states. [2021-02-21 16:13:42,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:13:42,964 INFO L93 Difference]: Finished difference Result 70 states and 106 transitions. [2021-02-21 16:13:42,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 16:13:42,966 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2021-02-21 16:13:42,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:13:42,979 INFO L225 Difference]: With dead ends: 70 [2021-02-21 16:13:42,979 INFO L226 Difference]: Without dead ends: 30 [2021-02-21 16:13:42,984 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 [2021-02-21 16:13:43,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-02-21 16:13:43,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-02-21 16:13:43,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-02-21 16:13:43,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2021-02-21 16:13:43,034 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 10 [2021-02-21 16:13:43,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:13:43,034 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2021-02-21 16:13:43,035 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 16:13:43,035 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2021-02-21 16:13:43,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-02-21 16:13:43,036 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:13:43,036 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 16:13:43,036 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 16:13:43,037 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:13:43,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:13:43,038 INFO L82 PathProgramCache]: Analyzing trace with hash 1802537944, now seen corresponding path program 1 times [2021-02-21 16:13:43,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:13:43,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241649159] [2021-02-21 16:13:43,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:13:43,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:13:43,157 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:43,158 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:13:43,171 WARN L141 QuantifierPusher]: treesize reduction 24, result has 42.9 percent of original size [2021-02-21 16:13:43,173 WARN L147 QuantifierPusher]: treesize reduction 24, result has 42.9 percent of original size 18 [2021-02-21 16:13:43,186 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:43,187 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 16:13:43,194 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:43,195 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:13:43,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:13:43,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:13:43,235 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:43,236 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:13:43,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:13:43,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241649159] [2021-02-21 16:13:43,239 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:13:43,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-21 16:13:43,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536285851] [2021-02-21 16:13:43,241 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-21 16:13:43,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:13:43,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-21 16:13:43,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-21 16:13:43,243 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 5 states. [2021-02-21 16:13:43,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:13:43,466 INFO L93 Difference]: Finished difference Result 46 states and 53 transitions. [2021-02-21 16:13:43,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 16:13:43,466 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2021-02-21 16:13:43,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:13:43,468 INFO L225 Difference]: With dead ends: 46 [2021-02-21 16:13:43,468 INFO L226 Difference]: Without dead ends: 42 [2021-02-21 16:13:43,470 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-21 16:13:43,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-02-21 16:13:43,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 32. [2021-02-21 16:13:43,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2021-02-21 16:13:43,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2021-02-21 16:13:43,480 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 11 [2021-02-21 16:13:43,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:13:43,480 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2021-02-21 16:13:43,480 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-21 16:13:43,480 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2021-02-21 16:13:43,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-02-21 16:13:43,481 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:13:43,481 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 16:13:43,482 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 16:13:43,482 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:13:43,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:13:43,483 INFO L82 PathProgramCache]: Analyzing trace with hash 111468679, now seen corresponding path program 1 times [2021-02-21 16:13:43,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:13:43,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232832660] [2021-02-21 16:13:43,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:13:43,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:13:43,533 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:43,533 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:13:43,535 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:43,536 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:13:43,546 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:43,547 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:13:43,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:13:43,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:13:43,579 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:43,580 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:13:43,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:13:43,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232832660] [2021-02-21 16:13:43,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:13:43,582 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 16:13:43,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434828154] [2021-02-21 16:13:43,583 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 16:13:43,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:13:43,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 16:13:43,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 16:13:43,585 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand 4 states. [2021-02-21 16:13:43,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:13:43,679 INFO L93 Difference]: Finished difference Result 75 states and 90 transitions. [2021-02-21 16:13:43,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 16:13:43,680 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2021-02-21 16:13:43,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:13:43,683 INFO L225 Difference]: With dead ends: 75 [2021-02-21 16:13:43,684 INFO L226 Difference]: Without dead ends: 53 [2021-02-21 16:13:43,685 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 [2021-02-21 16:13:43,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-02-21 16:13:43,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 39. [2021-02-21 16:13:43,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2021-02-21 16:13:43,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 47 transitions. [2021-02-21 16:13:43,696 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 47 transitions. Word has length 14 [2021-02-21 16:13:43,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:13:43,696 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 47 transitions. [2021-02-21 16:13:43,696 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 16:13:43,697 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 47 transitions. [2021-02-21 16:13:43,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-02-21 16:13:43,698 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:13:43,698 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 16:13:43,698 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 16:13:43,699 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:13:43,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:13:43,699 INFO L82 PathProgramCache]: Analyzing trace with hash 1556962980, now seen corresponding path program 1 times [2021-02-21 16:13:43,700 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:13:43,700 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252964862] [2021-02-21 16:13:43,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:13:43,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 16:13:43,737 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 16:13:43,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 16:13:43,784 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 16:13:43,846 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-21 16:13:43,846 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 16:13:43,847 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 16:13:43,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 04:13:43 BoogieIcfgContainer [2021-02-21 16:13:43,909 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 16:13:43,913 INFO L168 Benchmark]: Toolchain (without parser) took 3404.75 ms. Allocated memory is still 159.4 MB. Free memory was 134.6 MB in the beginning and 98.8 MB in the end (delta: 35.8 MB). Peak memory consumption was 37.0 MB. Max. memory is 8.0 GB. [2021-02-21 16:13:43,914 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 159.4 MB. Free memory is still 131.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 16:13:43,917 INFO L168 Benchmark]: CACSL2BoogieTranslator took 646.87 ms. Allocated memory is still 159.4 MB. Free memory was 133.5 MB in the beginning and 111.2 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2021-02-21 16:13:43,919 INFO L168 Benchmark]: Boogie Preprocessor took 130.48 ms. Allocated memory is still 159.4 MB. Free memory was 111.2 MB in the beginning and 141.0 MB in the end (delta: -29.8 MB). Peak memory consumption was 3.7 MB. Max. memory is 8.0 GB. [2021-02-21 16:13:43,924 INFO L168 Benchmark]: RCFGBuilder took 739.06 ms. Allocated memory is still 159.4 MB. Free memory was 141.0 MB in the beginning and 98.5 MB in the end (delta: 42.5 MB). Peak memory consumption was 43.0 MB. Max. memory is 8.0 GB. [2021-02-21 16:13:43,926 INFO L168 Benchmark]: TraceAbstraction took 1870.87 ms. Allocated memory is still 159.4 MB. Free memory was 98.0 MB in the beginning and 98.8 MB in the end (delta: -788.2 kB). Peak memory consumption was 777.9 kB. Max. memory is 8.0 GB. [2021-02-21 16:13:43,933 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 159.4 MB. Free memory is still 131.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 646.87 ms. Allocated memory is still 159.4 MB. Free memory was 133.5 MB in the beginning and 111.2 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 130.48 ms. Allocated memory is still 159.4 MB. Free memory was 111.2 MB in the beginning and 141.0 MB in the end (delta: -29.8 MB). Peak memory consumption was 3.7 MB. Max. memory is 8.0 GB. * RCFGBuilder took 739.06 ms. Allocated memory is still 159.4 MB. Free memory was 141.0 MB in the beginning and 98.5 MB in the end (delta: 42.5 MB). Peak memory consumption was 43.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1870.87 ms. Allocated memory is still 159.4 MB. Free memory was 98.0 MB in the beginning and 98.8 MB in the end (delta: -788.2 kB). Peak memory consumption was 777.9 kB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1032]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L996] SLL* head = malloc(sizeof(SLL)); [L997] head->next = head [L998] head->data = 0 [L1000] SLL* x = head; [L1001] int state = 1; VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, state=1, x={-1:0}] [L1004] COND FALSE !(__VERIFIER_nondet_int()) [L1025] x->data = state [L1027] EXPR head->next [L1027] x = head->next [L1028] COND FALSE !(!(((void*)0) != x)) VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, state=1, x={-1:0}] [L1030] EXPR x->data VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, state=1, x={-1:0}, x->data=1] [L1030] COND TRUE x->data != 0 [L1032] EXPR x->next [L1032] EXPR x->next->data [L1032] EXPR x->next->data != 0 && x->data > x->next->data [L1032] EXPR x->data [L1032] EXPR x->next [L1032] EXPR x->next->data [L1032] EXPR x->next->data != 0 && x->data > x->next->data VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, state=1, x={-1:0}, x->data=1, x->next={-1:0}, x->next={-1:0}, x->next->data=1, x->next->data=1, x->next->data != 0 && x->data > x->next->data=0] [L1032] COND TRUE !(x->next->data != 0 && x->data > x->next->data) [L1032] reach_error() VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, state=1, x={-1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 41 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.7s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 92 SDtfs, 44 SDslu, 66 SDs, 0 SdLazy, 140 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 24 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 52 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 1762 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...