/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/list-properties/list_flag-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-06 22:27:17,234 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-06 22:27:17,237 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-06 22:27:17,279 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-06 22:27:17,280 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-06 22:27:17,281 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-06 22:27:17,283 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-06 22:27:17,286 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-06 22:27:17,288 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-06 22:27:17,289 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-06 22:27:17,290 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-06 22:27:17,292 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-06 22:27:17,292 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-06 22:27:17,294 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-06 22:27:17,295 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-06 22:27:17,297 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-06 22:27:17,298 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-06 22:27:17,299 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-06 22:27:17,317 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-06 22:27:17,323 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-06 22:27:17,325 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-06 22:27:17,326 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-06 22:27:17,328 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-06 22:27:17,329 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-06 22:27:17,332 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-06 22:27:17,332 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-06 22:27:17,332 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-06 22:27:17,334 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-06 22:27:17,334 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-06 22:27:17,335 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-06 22:27:17,336 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-06 22:27:17,337 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-06 22:27:17,338 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-06 22:27:17,339 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-06 22:27:17,340 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-06 22:27:17,340 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-06 22:27:17,341 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-06 22:27:17,342 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-06 22:27:17,342 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-06 22:27:17,343 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-06 22:27:17,344 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-06 22:27:17,345 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 [2020-11-06 22:27:17,372 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-06 22:27:17,373 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-06 22:27:17,374 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-06 22:27:17,375 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-06 22:27:17,375 INFO L138 SettingsManager]: * Use SBE=true [2020-11-06 22:27:17,375 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-06 22:27:17,375 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-06 22:27:17,376 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-06 22:27:17,376 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-06 22:27:17,376 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-06 22:27:17,376 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-06 22:27:17,376 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-06 22:27:17,377 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-06 22:27:17,377 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-06 22:27:17,377 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-06 22:27:17,377 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-06 22:27:17,377 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-06 22:27:17,378 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-06 22:27:17,378 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-06 22:27:17,378 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-06 22:27:17,378 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-06 22:27:17,379 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 22:27:17,379 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-06 22:27:17,379 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-06 22:27:17,379 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-06 22:27:17,380 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-06 22:27:17,380 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-06 22:27:17,380 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-06 22:27:17,380 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-06 22:27:17,380 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-06 22:27:17,833 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-06 22:27:17,874 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-06 22:27:17,878 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-06 22:27:17,879 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-06 22:27:17,880 INFO L275 PluginConnector]: CDTParser initialized [2020-11-06 22:27:17,881 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/list_flag-1.i [2020-11-06 22:27:17,974 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75e22ebce/ca4e18f4ea954f29935c11c6a2ccf4b6/FLAG82a28463e [2020-11-06 22:27:18,725 INFO L306 CDTParser]: Found 1 translation units. [2020-11-06 22:27:18,726 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-properties/list_flag-1.i [2020-11-06 22:27:18,745 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75e22ebce/ca4e18f4ea954f29935c11c6a2ccf4b6/FLAG82a28463e [2020-11-06 22:27:18,992 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75e22ebce/ca4e18f4ea954f29935c11c6a2ccf4b6 [2020-11-06 22:27:18,995 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-06 22:27:19,003 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-06 22:27:19,004 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-06 22:27:19,005 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-06 22:27:19,012 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-06 22:27:19,013 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:27:18" (1/1) ... [2020-11-06 22:27:19,018 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40c5e91a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:19, skipping insertion in model container [2020-11-06 22:27:19,018 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:27:18" (1/1) ... [2020-11-06 22:27:19,030 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-06 22:27:19,085 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-06 22:27:19,426 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:27:19,436 INFO L203 MainTranslator]: Completed pre-run [2020-11-06 22:27:19,480 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:27:19,538 INFO L208 MainTranslator]: Completed translation [2020-11-06 22:27:19,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:19 WrapperNode [2020-11-06 22:27:19,539 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-06 22:27:19,540 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-06 22:27:19,540 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-06 22:27:19,540 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-06 22:27:19,552 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:19" (1/1) ... [2020-11-06 22:27:19,553 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:19" (1/1) ... [2020-11-06 22:27:19,568 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:19" (1/1) ... [2020-11-06 22:27:19,569 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:19" (1/1) ... [2020-11-06 22:27:19,630 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:19" (1/1) ... [2020-11-06 22:27:19,639 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:19" (1/1) ... [2020-11-06 22:27:19,648 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:19" (1/1) ... [2020-11-06 22:27:19,663 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-06 22:27:19,664 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-06 22:27:19,665 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-06 22:27:19,665 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-06 22:27:19,671 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:19" (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 [2020-11-06 22:27:19,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-06 22:27:19,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-06 22:27:19,755 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-06 22:27:19,755 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-11-06 22:27:19,755 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-11-06 22:27:19,756 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-11-06 22:27:19,757 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-11-06 22:27:19,757 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-11-06 22:27:19,758 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-11-06 22:27:19,758 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-06 22:27:19,759 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-06 22:27:19,759 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-06 22:27:19,759 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-11-06 22:27:19,760 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-11-06 22:27:19,760 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-06 22:27:19,761 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-06 22:27:19,761 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-06 22:27:19,761 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-11-06 22:27:19,762 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-11-06 22:27:19,762 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-11-06 22:27:19,762 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-11-06 22:27:19,762 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-11-06 22:27:19,762 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-11-06 22:27:19,762 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-11-06 22:27:19,763 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-11-06 22:27:19,763 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-11-06 22:27:19,763 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-11-06 22:27:19,763 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-11-06 22:27:19,764 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-11-06 22:27:19,764 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-11-06 22:27:19,764 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-11-06 22:27:19,764 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-11-06 22:27:19,764 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-11-06 22:27:19,764 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-11-06 22:27:19,764 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-11-06 22:27:19,765 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-11-06 22:27:19,765 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-11-06 22:27:19,765 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-11-06 22:27:19,765 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-11-06 22:27:19,765 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-11-06 22:27:19,765 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-11-06 22:27:19,766 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-11-06 22:27:19,766 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-11-06 22:27:19,766 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-11-06 22:27:19,766 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-11-06 22:27:19,766 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-11-06 22:27:19,767 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-11-06 22:27:19,767 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-11-06 22:27:19,767 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-11-06 22:27:19,767 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-11-06 22:27:19,767 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-11-06 22:27:19,767 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-11-06 22:27:19,768 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-11-06 22:27:19,768 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-11-06 22:27:19,768 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-11-06 22:27:19,769 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-11-06 22:27:19,769 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-11-06 22:27:19,769 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-11-06 22:27:19,769 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-11-06 22:27:19,770 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-11-06 22:27:19,770 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-11-06 22:27:19,770 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-11-06 22:27:19,770 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-11-06 22:27:19,770 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-11-06 22:27:19,770 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-11-06 22:27:19,771 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-11-06 22:27:19,771 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-11-06 22:27:19,771 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-11-06 22:27:19,771 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-11-06 22:27:19,772 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-11-06 22:27:19,772 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-11-06 22:27:19,772 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-11-06 22:27:19,772 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-06 22:27:19,773 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-11-06 22:27:19,773 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-11-06 22:27:19,773 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-11-06 22:27:19,773 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-11-06 22:27:19,774 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-11-06 22:27:19,774 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-11-06 22:27:19,774 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-11-06 22:27:19,774 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-11-06 22:27:19,775 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-11-06 22:27:19,775 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-11-06 22:27:19,775 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-11-06 22:27:19,775 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-11-06 22:27:19,776 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-11-06 22:27:19,776 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-11-06 22:27:19,777 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-11-06 22:27:19,777 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-11-06 22:27:19,778 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-11-06 22:27:19,778 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-11-06 22:27:19,778 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-11-06 22:27:19,778 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-11-06 22:27:19,778 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-11-06 22:27:19,778 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-11-06 22:27:19,779 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-11-06 22:27:19,779 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-11-06 22:27:19,779 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-11-06 22:27:19,779 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-11-06 22:27:19,779 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-11-06 22:27:19,779 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-11-06 22:27:19,779 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-11-06 22:27:19,780 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-11-06 22:27:19,780 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-11-06 22:27:19,780 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-11-06 22:27:19,780 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-11-06 22:27:19,780 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-11-06 22:27:19,780 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-11-06 22:27:19,781 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-11-06 22:27:19,781 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-11-06 22:27:19,781 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-11-06 22:27:19,781 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-11-06 22:27:19,781 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-11-06 22:27:19,781 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-11-06 22:27:19,781 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-11-06 22:27:19,782 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-11-06 22:27:19,782 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-11-06 22:27:19,783 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-11-06 22:27:19,783 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-11-06 22:27:19,784 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-11-06 22:27:19,784 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-11-06 22:27:19,784 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-11-06 22:27:19,784 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-11-06 22:27:19,784 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-11-06 22:27:19,784 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-06 22:27:19,785 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-06 22:27:19,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-06 22:27:19,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-06 22:27:19,785 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-06 22:27:19,786 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-06 22:27:19,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-06 22:27:19,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-06 22:27:19,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-06 22:27:19,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-06 22:27:20,169 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-11-06 22:27:20,445 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-06 22:27:20,445 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-11-06 22:27:20,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:27:20 BoogieIcfgContainer [2020-11-06 22:27:20,450 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-06 22:27:20,457 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-06 22:27:20,457 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-06 22:27:20,462 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-06 22:27:20,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:27:18" (1/3) ... [2020-11-06 22:27:20,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fda0330 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:27:20, skipping insertion in model container [2020-11-06 22:27:20,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:19" (2/3) ... [2020-11-06 22:27:20,471 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fda0330 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:27:20, skipping insertion in model container [2020-11-06 22:27:20,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:27:20" (3/3) ... [2020-11-06 22:27:20,473 INFO L111 eAbstractionObserver]: Analyzing ICFG list_flag-1.i [2020-11-06 22:27:20,491 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-06 22:27:20,496 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-06 22:27:20,509 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-06 22:27:20,546 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-06 22:27:20,546 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-06 22:27:20,546 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-06 22:27:20,546 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-06 22:27:20,546 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-06 22:27:20,546 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-06 22:27:20,546 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-06 22:27:20,547 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-06 22:27:20,572 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-11-06 22:27:20,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-06 22:27:20,581 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:27:20,582 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:27:20,583 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:27:20,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:27:20,594 INFO L82 PathProgramCache]: Analyzing trace with hash 1727656477, now seen corresponding path program 1 times [2020-11-06 22:27:20,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:27:20,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846205220] [2020-11-06 22:27:20,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:27:20,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:27:20,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:27:20,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:27:20,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:27:20,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846205220] [2020-11-06 22:27:20,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:27:20,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-06 22:27:20,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637864775] [2020-11-06 22:27:20,947 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-06 22:27:20,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:27:20,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-06 22:27:20,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-06 22:27:20,970 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2020-11-06 22:27:21,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:27:21,080 INFO L93 Difference]: Finished difference Result 53 states and 71 transitions. [2020-11-06 22:27:21,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-06 22:27:21,082 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-11-06 22:27:21,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:27:21,090 INFO L225 Difference]: With dead ends: 53 [2020-11-06 22:27:21,091 INFO L226 Difference]: Without dead ends: 26 [2020-11-06 22:27:21,094 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 [2020-11-06 22:27:21,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-11-06 22:27:21,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-11-06 22:27:21,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-11-06 22:27:21,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2020-11-06 22:27:21,136 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 17 [2020-11-06 22:27:21,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:27:21,136 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2020-11-06 22:27:21,136 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-06 22:27:21,136 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2020-11-06 22:27:21,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-06 22:27:21,137 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:27:21,138 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:27:21,138 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-06 22:27:21,138 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:27:21,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:27:21,139 INFO L82 PathProgramCache]: Analyzing trace with hash -2101667437, now seen corresponding path program 1 times [2020-11-06 22:27:21,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:27:21,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618958199] [2020-11-06 22:27:21,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:27:21,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:27:21,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:27:21,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:27:21,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:27:21,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618958199] [2020-11-06 22:27:21,269 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:27:21,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-06 22:27:21,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066867713] [2020-11-06 22:27:21,271 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-06 22:27:21,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:27:21,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-06 22:27:21,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-06 22:27:21,273 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 6 states. [2020-11-06 22:27:21,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:27:21,450 INFO L93 Difference]: Finished difference Result 51 states and 61 transitions. [2020-11-06 22:27:21,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-06 22:27:21,451 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-11-06 22:27:21,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:27:21,453 INFO L225 Difference]: With dead ends: 51 [2020-11-06 22:27:21,454 INFO L226 Difference]: Without dead ends: 45 [2020-11-06 22:27:21,455 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-11-06 22:27:21,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-11-06 22:27:21,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 34. [2020-11-06 22:27:21,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-11-06 22:27:21,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2020-11-06 22:27:21,464 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 19 [2020-11-06 22:27:21,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:27:21,465 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2020-11-06 22:27:21,465 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-06 22:27:21,465 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2020-11-06 22:27:21,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-06 22:27:21,466 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:27:21,466 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] [2020-11-06 22:27:21,467 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-06 22:27:21,467 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:27:21,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:27:21,467 INFO L82 PathProgramCache]: Analyzing trace with hash -1549917714, now seen corresponding path program 1 times [2020-11-06 22:27:21,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:27:21,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536967921] [2020-11-06 22:27:21,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:27:21,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:27:21,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:27:21,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:27:21,562 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:27:21,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536967921] [2020-11-06 22:27:21,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:27:21,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-06 22:27:21,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519589980] [2020-11-06 22:27:21,564 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-06 22:27:21,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:27:21,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-06 22:27:21,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-06 22:27:21,565 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand 6 states. [2020-11-06 22:27:21,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:27:21,691 INFO L93 Difference]: Finished difference Result 53 states and 62 transitions. [2020-11-06 22:27:21,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-06 22:27:21,692 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-11-06 22:27:21,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:27:21,693 INFO L225 Difference]: With dead ends: 53 [2020-11-06 22:27:21,693 INFO L226 Difference]: Without dead ends: 43 [2020-11-06 22:27:21,694 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-11-06 22:27:21,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-11-06 22:27:21,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 32. [2020-11-06 22:27:21,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-11-06 22:27:21,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2020-11-06 22:27:21,701 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 21 [2020-11-06 22:27:21,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:27:21,701 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2020-11-06 22:27:21,701 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-06 22:27:21,701 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2020-11-06 22:27:21,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-06 22:27:21,702 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:27:21,702 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] [2020-11-06 22:27:21,702 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-06 22:27:21,703 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:27:21,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:27:21,703 INFO L82 PathProgramCache]: Analyzing trace with hash 1510356189, now seen corresponding path program 1 times [2020-11-06 22:27:21,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:27:21,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433079573] [2020-11-06 22:27:21,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:27:21,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:27:21,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:27:21,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:27:21,783 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:27:21,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433079573] [2020-11-06 22:27:21,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:27:21,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-06 22:27:21,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791824796] [2020-11-06 22:27:21,785 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-06 22:27:21,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:27:21,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-06 22:27:21,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-06 22:27:21,786 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand 6 states. [2020-11-06 22:27:21,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:27:21,897 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2020-11-06 22:27:21,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-06 22:27:21,898 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-11-06 22:27:21,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:27:21,899 INFO L225 Difference]: With dead ends: 51 [2020-11-06 22:27:21,899 INFO L226 Difference]: Without dead ends: 39 [2020-11-06 22:27:21,900 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-11-06 22:27:21,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-11-06 22:27:21,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 28. [2020-11-06 22:27:21,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-11-06 22:27:21,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-11-06 22:27:21,905 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 21 [2020-11-06 22:27:21,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:27:21,906 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-11-06 22:27:21,906 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-06 22:27:21,906 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-11-06 22:27:21,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-06 22:27:21,907 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:27:21,907 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] [2020-11-06 22:27:21,907 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-06 22:27:21,907 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:27:21,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:27:21,908 INFO L82 PathProgramCache]: Analyzing trace with hash -1100497208, now seen corresponding path program 1 times [2020-11-06 22:27:21,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:27:21,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429172160] [2020-11-06 22:27:21,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:27:21,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:27:21,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:27:21,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:27:21,971 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:27:21,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429172160] [2020-11-06 22:27:21,972 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:27:21,972 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-06 22:27:21,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034911910] [2020-11-06 22:27:21,973 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-06 22:27:21,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:27:21,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-06 22:27:21,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-06 22:27:21,974 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 4 states. [2020-11-06 22:27:22,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:27:22,052 INFO L93 Difference]: Finished difference Result 57 states and 68 transitions. [2020-11-06 22:27:22,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-06 22:27:22,056 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-11-06 22:27:22,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:27:22,057 INFO L225 Difference]: With dead ends: 57 [2020-11-06 22:27:22,057 INFO L226 Difference]: Without dead ends: 39 [2020-11-06 22:27:22,058 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 [2020-11-06 22:27:22,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-11-06 22:27:22,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2020-11-06 22:27:22,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-06 22:27:22,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2020-11-06 22:27:22,071 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 25 [2020-11-06 22:27:22,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:27:22,071 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2020-11-06 22:27:22,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-06 22:27:22,071 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2020-11-06 22:27:22,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-06 22:27:22,074 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:27:22,074 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] [2020-11-06 22:27:22,074 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-06 22:27:22,074 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:27:22,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:27:22,075 INFO L82 PathProgramCache]: Analyzing trace with hash 1965028247, now seen corresponding path program 1 times [2020-11-06 22:27:22,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:27:22,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411097301] [2020-11-06 22:27:22,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:27:22,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 22:27:22,119 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 22:27:22,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 22:27:22,156 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 22:27:22,199 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-06 22:27:22,199 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-06 22:27:22,199 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-06 22:27:22,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:27:22 BoogieIcfgContainer [2020-11-06 22:27:22,247 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-06 22:27:22,256 INFO L168 Benchmark]: Toolchain (without parser) took 3251.09 ms. Allocated memory was 156.2 MB in the beginning and 194.0 MB in the end (delta: 37.7 MB). Free memory was 130.9 MB in the beginning and 164.6 MB in the end (delta: -33.7 MB). Peak memory consumption was 5.1 MB. Max. memory is 8.0 GB. [2020-11-06 22:27:22,257 INFO L168 Benchmark]: CDTParser took 1.41 ms. Allocated memory is still 156.2 MB. Free memory is still 129.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-06 22:27:22,258 INFO L168 Benchmark]: CACSL2BoogieTranslator took 534.59 ms. Allocated memory is still 156.2 MB. Free memory was 130.2 MB in the beginning and 108.5 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2020-11-06 22:27:22,258 INFO L168 Benchmark]: Boogie Preprocessor took 124.04 ms. Allocated memory is still 156.2 MB. Free memory was 108.5 MB in the beginning and 138.1 MB in the end (delta: -29.6 MB). Peak memory consumption was 3.8 MB. Max. memory is 8.0 GB. [2020-11-06 22:27:22,260 INFO L168 Benchmark]: RCFGBuilder took 789.09 ms. Allocated memory is still 156.2 MB. Free memory was 138.1 MB in the beginning and 96.7 MB in the end (delta: 41.4 MB). Peak memory consumption was 41.9 MB. Max. memory is 8.0 GB. [2020-11-06 22:27:22,260 INFO L168 Benchmark]: TraceAbstraction took 1790.03 ms. Allocated memory was 156.2 MB in the beginning and 194.0 MB in the end (delta: 37.7 MB). Free memory was 96.2 MB in the beginning and 164.6 MB in the end (delta: -68.4 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-06 22:27:22,264 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.41 ms. Allocated memory is still 156.2 MB. Free memory is still 129.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 534.59 ms. Allocated memory is still 156.2 MB. Free memory was 130.2 MB in the beginning and 108.5 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 124.04 ms. Allocated memory is still 156.2 MB. Free memory was 108.5 MB in the beginning and 138.1 MB in the end (delta: -29.6 MB). Peak memory consumption was 3.8 MB. Max. memory is 8.0 GB. * RCFGBuilder took 789.09 ms. Allocated memory is still 156.2 MB. Free memory was 138.1 MB in the beginning and 96.7 MB in the end (delta: 41.4 MB). Peak memory consumption was 41.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1790.03 ms. Allocated memory was 156.2 MB in the beginning and 194.0 MB in the end (delta: 37.7 MB). Free memory was 96.2 MB in the beginning and 164.6 MB in the end (delta: -68.4 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 12]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L532] int flag = __VERIFIER_nondet_int(); [L533] List p, a, t; [L534] a = (List) malloc(sizeof(struct node)) VAL [a={-2:0}, flag=-1, malloc(sizeof(struct node))={-2:0}] [L535] COND FALSE !(a == 0) VAL [a={-2:0}, flag=-1, malloc(sizeof(struct node))={-2:0}] [L536] p = a VAL [a={-2:0}, flag=-1, malloc(sizeof(struct node))={-2:0}, p={-2:0}] [L537] COND TRUE __VERIFIER_nondet_int() [L538] COND TRUE \read(flag) [L539] p->h = 1 VAL [a={-2:0}, flag=-1, malloc(sizeof(struct node))={-2:0}, p={-2:0}] [L543] t = (List) malloc(sizeof(struct node)) VAL [a={-2:0}, flag=-1, malloc(sizeof(struct node))={-3:0}, malloc(sizeof(struct node))={-2:0}, p={-2:0}, t={-3:0}] [L544] COND FALSE !(t == 0) VAL [a={-2:0}, flag=-1, malloc(sizeof(struct node))={-3:0}, malloc(sizeof(struct node))={-2:0}, p={-2:0}, t={-3:0}] [L545] p->n = t [L546] EXPR p->n [L546] p = p->n [L537] COND FALSE !(__VERIFIER_nondet_int()) [L548] p->h = 3 [L549] p = a VAL [a={-2:0}, flag=-1, malloc(sizeof(struct node))={-3:0}, malloc(sizeof(struct node))={-2:0}, p={-2:0}, t={-3:0}] [L550] COND TRUE \read(flag) VAL [a={-2:0}, flag=-1, malloc(sizeof(struct node))={-3:0}, malloc(sizeof(struct node))={-2:0}, p={-2:0}, t={-3:0}] [L551] EXPR p->h VAL [a={-2:0}, flag=-1, malloc(sizeof(struct node))={-3:0}, malloc(sizeof(struct node))={-2:0}, p={-2:0}, p->h=1, t={-3:0}] [L551] COND FALSE !(p->h == 2) [L556] EXPR p->h VAL [a={-2:0}, flag=-1, malloc(sizeof(struct node))={-3:0}, malloc(sizeof(struct node))={-2:0}, p={-2:0}, p->h=1, t={-3:0}] [L556] COND TRUE p->h != 3 [L557] CALL reach_error() [L12] COND FALSE !(0) [L12] __assert_fail ("0", "list_flag-1.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 53 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.6s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 130 SDtfs, 79 SDslu, 180 SDs, 0 SdLazy, 301 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=0, 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, 5 MinimizatonAttempts, 36 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 98 ConstructedInterpolants, 0 QuantifiedInterpolants, 6884 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 6/6 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...