/usr/bin/java -ea -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf -i ../../../trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-34549b5 [2022-04-08 09:27:11,987 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-08 09:27:11,988 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-08 09:27:12,007 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-08 09:27:12,008 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-08 09:27:12,008 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-08 09:27:12,009 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-08 09:27:12,010 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-08 09:27:12,011 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-08 09:27:12,011 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-08 09:27:12,012 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-08 09:27:12,013 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-08 09:27:12,013 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-08 09:27:12,013 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-08 09:27:12,014 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-08 09:27:12,015 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-08 09:27:12,015 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-08 09:27:12,016 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-08 09:27:12,017 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-08 09:27:12,018 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-08 09:27:12,019 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-08 09:27:12,019 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-08 09:27:12,020 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-08 09:27:12,020 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-08 09:27:12,021 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-08 09:27:12,022 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-08 09:27:12,022 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-08 09:27:12,023 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-08 09:27:12,023 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-08 09:27:12,023 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-08 09:27:12,024 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-08 09:27:12,024 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-08 09:27:12,024 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-08 09:27:12,025 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-08 09:27:12,025 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-08 09:27:12,026 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-08 09:27:12,026 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-08 09:27:12,026 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-08 09:27:12,026 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-08 09:27:12,027 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-08 09:27:12,027 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-08 09:27:12,028 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-08 09:27:12,028 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-04-08 09:27:12,033 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-08 09:27:12,033 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-08 09:27:12,034 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-08 09:27:12,034 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-08 09:27:12,034 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-08 09:27:12,034 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-08 09:27:12,035 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-08 09:27:12,035 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-08 09:27:12,035 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-08 09:27:12,035 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-08 09:27:12,035 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-08 09:27:12,035 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-08 09:27:12,035 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-08 09:27:12,035 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-08 09:27:12,036 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-08 09:27:12,036 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-08 09:27:12,036 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-08 09:27:12,036 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-04-08 09:27:12,036 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-04-08 09:27:12,036 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-04-08 09:27:12,036 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-08 09:27:12,036 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-04-08 09:27:12,037 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-08 09:27:12,215 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-08 09:27:12,228 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-08 09:27:12,230 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-08 09:27:12,230 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-08 09:27:12,232 INFO L275 PluginConnector]: CDTParser initialized [2022-04-08 09:27:12,233 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+lhb-reducer.c [2022-04-08 09:27:12,287 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed9cd4d5b/e7bf8b50617c45f583eda0b821a5fad9/FLAG4fb388f54 [2022-04-08 09:27:12,650 INFO L306 CDTParser]: Found 1 translation units. [2022-04-08 09:27:12,650 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+lhb-reducer.c [2022-04-08 09:27:12,654 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed9cd4d5b/e7bf8b50617c45f583eda0b821a5fad9/FLAG4fb388f54 [2022-04-08 09:27:13,066 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed9cd4d5b/e7bf8b50617c45f583eda0b821a5fad9 [2022-04-08 09:27:13,067 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-08 09:27:13,068 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-08 09:27:13,075 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-08 09:27:13,076 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-08 09:27:13,084 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-08 09:27:13,085 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.04 09:27:13" (1/1) ... [2022-04-08 09:27:13,086 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@493b51c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 09:27:13, skipping insertion in model container [2022-04-08 09:27:13,086 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.04 09:27:13" (1/1) ... [2022-04-08 09:27:13,091 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-08 09:27:13,113 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-08 09:27:13,228 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[1224,1237] [2022-04-08 09:27:13,232 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[1636,1649] [2022-04-08 09:27:13,233 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[1851,1864] [2022-04-08 09:27:13,235 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[2384,2397] [2022-04-08 09:27:13,236 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[2599,2612] [2022-04-08 09:27:13,237 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[2901,2914] [2022-04-08 09:27:13,238 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[3116,3129] [2022-04-08 09:27:13,240 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[3386,3399] [2022-04-08 09:27:13,241 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[3604,3617] [2022-04-08 09:27:13,245 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[4088,4101] [2022-04-08 09:27:13,246 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[4306,4319] [2022-04-08 09:27:13,248 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[4802,4815] [2022-04-08 09:27:13,249 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[5203,5216] [2022-04-08 09:27:13,250 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[5421,5434] [2022-04-08 09:27:13,252 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[5792,5805] [2022-04-08 09:27:13,253 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[6010,6023] [2022-04-08 09:27:13,254 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[6296,6309] [2022-04-08 09:27:13,255 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[6514,6527] [2022-04-08 09:27:13,256 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-08 09:27:13,270 INFO L203 MainTranslator]: Completed pre-run [2022-04-08 09:27:13,279 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[1224,1237] [2022-04-08 09:27:13,281 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[1636,1649] [2022-04-08 09:27:13,282 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[1851,1864] [2022-04-08 09:27:13,283 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[2384,2397] [2022-04-08 09:27:13,284 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[2599,2612] [2022-04-08 09:27:13,285 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[2901,2914] [2022-04-08 09:27:13,286 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[3116,3129] [2022-04-08 09:27:13,287 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[3386,3399] [2022-04-08 09:27:13,288 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[3604,3617] [2022-04-08 09:27:13,289 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[4088,4101] [2022-04-08 09:27:13,290 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[4306,4319] [2022-04-08 09:27:13,291 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[4802,4815] [2022-04-08 09:27:13,292 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[5203,5216] [2022-04-08 09:27:13,293 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[5421,5434] [2022-04-08 09:27:13,294 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[5792,5805] [2022-04-08 09:27:13,295 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[6010,6023] [2022-04-08 09:27:13,296 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[6296,6309] [2022-04-08 09:27:13,296 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[6514,6527] [2022-04-08 09:27:13,298 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-08 09:27:13,318 INFO L208 MainTranslator]: Completed translation [2022-04-08 09:27:13,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 09:27:13 WrapperNode [2022-04-08 09:27:13,319 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-08 09:27:13,319 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-08 09:27:13,319 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-08 09:27:13,319 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-08 09:27:13,327 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 09:27:13" (1/1) ... [2022-04-08 09:27:13,327 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 09:27:13" (1/1) ... [2022-04-08 09:27:13,332 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 09:27:13" (1/1) ... [2022-04-08 09:27:13,332 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 09:27:13" (1/1) ... [2022-04-08 09:27:13,350 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 09:27:13" (1/1) ... [2022-04-08 09:27:13,353 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 09:27:13" (1/1) ... [2022-04-08 09:27:13,358 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 09:27:13" (1/1) ... [2022-04-08 09:27:13,360 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-08 09:27:13,361 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-08 09:27:13,361 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-08 09:27:13,361 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-08 09:27:13,361 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 09:27:13" (1/1) ... [2022-04-08 09:27:13,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-08 09:27:13,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-08 09:27:13,389 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-04-08 09:27:13,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-04-08 09:27:13,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-08 09:27:13,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-08 09:27:13,417 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-08 09:27:13,417 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-08 09:27:13,417 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-08 09:27:13,417 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-08 09:27:13,417 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-08 09:27:13,417 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-08 09:27:13,417 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-08 09:27:13,417 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-08 09:27:13,417 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-08 09:27:13,417 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-08 09:27:13,417 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-08 09:27:13,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-08 09:27:13,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-08 09:27:13,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-08 09:27:13,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-08 09:27:13,418 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-08 09:27:13,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-08 09:27:13,467 INFO L234 CfgBuilder]: Building ICFG [2022-04-08 09:27:13,468 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-08 09:27:13,704 INFO L275 CfgBuilder]: Performing block encoding [2022-04-08 09:27:13,709 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-08 09:27:13,709 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-04-08 09:27:13,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.04 09:27:13 BoogieIcfgContainer [2022-04-08 09:27:13,710 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-08 09:27:13,712 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-08 09:27:13,712 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-08 09:27:13,714 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-08 09:27:13,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.04 09:27:13" (1/3) ... [2022-04-08 09:27:13,715 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f75ef7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.04 09:27:13, skipping insertion in model container [2022-04-08 09:27:13,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 09:27:13" (2/3) ... [2022-04-08 09:27:13,715 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f75ef7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.04 09:27:13, skipping insertion in model container [2022-04-08 09:27:13,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.04 09:27:13" (3/3) ... [2022-04-08 09:27:13,716 INFO L111 eAbstractionObserver]: Analyzing ICFG apache-get-tag.i.v+lhb-reducer.c [2022-04-08 09:27:13,719 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-04-08 09:27:13,719 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2022-04-08 09:27:13,747 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-08 09:27:13,752 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-04-08 09:27:13,752 INFO L341 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-04-08 09:27:13,777 INFO L276 IsEmpty]: Start isEmpty. Operand has 80 states, 57 states have (on average 1.8421052631578947) internal successors, (105), 75 states have internal predecessors, (105), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-08 09:27:13,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-04-08 09:27:13,783 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 09:27:13,783 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 09:27:13,783 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-04-08 09:27:13,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 09:27:13,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1796468500, now seen corresponding path program 1 times [2022-04-08 09:27:13,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 09:27:13,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1010557702] [2022-04-08 09:27:13,801 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-08 09:27:13,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1796468500, now seen corresponding path program 2 times [2022-04-08 09:27:13,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 09:27:13,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240062654] [2022-04-08 09:27:13,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 09:27:13,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 09:27:13,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 09:27:14,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-08 09:27:14,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 09:27:14,037 INFO L290 TraceCheckUtils]: 0: Hoare triple {90#(and (= |old(~__return_305~0)| ~__return_305~0) (= |old(~__tmp_259_0~0)| ~__tmp_259_0~0) (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__tmp_383_0~0)| ~__tmp_383_0~0) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(33, 2);call #Ultimate.allocInit(12, 3);~__return_main~0 := 0;~__tmp_259_0~0 := 0;~__return_305~0 := 0;~__tmp_383_0~0 := 0; {83#true} is VALID [2022-04-08 09:27:14,038 INFO L290 TraceCheckUtils]: 1: Hoare triple {83#true} assume true; {83#true} is VALID [2022-04-08 09:27:14,038 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {83#true} {83#true} #191#return; {83#true} is VALID [2022-04-08 09:27:14,040 INFO L272 TraceCheckUtils]: 0: Hoare triple {83#true} call ULTIMATE.init(); {90#(and (= |old(~__return_305~0)| ~__return_305~0) (= |old(~__tmp_259_0~0)| ~__tmp_259_0~0) (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__tmp_383_0~0)| ~__tmp_383_0~0) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-08 09:27:14,040 INFO L290 TraceCheckUtils]: 1: Hoare triple {90#(and (= |old(~__return_305~0)| ~__return_305~0) (= |old(~__tmp_259_0~0)| ~__tmp_259_0~0) (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__tmp_383_0~0)| ~__tmp_383_0~0) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(33, 2);call #Ultimate.allocInit(12, 3);~__return_main~0 := 0;~__tmp_259_0~0 := 0;~__return_305~0 := 0;~__tmp_383_0~0 := 0; {83#true} is VALID [2022-04-08 09:27:14,040 INFO L290 TraceCheckUtils]: 2: Hoare triple {83#true} assume true; {83#true} is VALID [2022-04-08 09:27:14,040 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {83#true} {83#true} #191#return; {83#true} is VALID [2022-04-08 09:27:14,041 INFO L272 TraceCheckUtils]: 4: Hoare triple {83#true} call #t~ret10 := main(); {83#true} is VALID [2022-04-08 09:27:14,041 INFO L290 TraceCheckUtils]: 5: Hoare triple {83#true} havoc ~main__tagbuf_len~0;havoc ~main__t~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~main__tagbuf_len~0 := #t~nondet4;havoc #t~nondet4; {83#true} is VALID [2022-04-08 09:27:14,042 INFO L290 TraceCheckUtils]: 6: Hoare triple {83#true} assume ~main__tagbuf_len~0 >= 1;~main__t~0 := 0;~main__tagbuf_len~0 := ~main__tagbuf_len~0 - 1; {88#(and (<= 0 main_~main__tagbuf_len~0) (= main_~main__t~0 0))} is VALID [2022-04-08 09:27:14,043 INFO L290 TraceCheckUtils]: 7: Hoare triple {88#(and (<= 0 main_~main__tagbuf_len~0) (= main_~main__t~0 0))} assume !(~main__t~0 == ~main__tagbuf_len~0);havoc ~main____CPAchecker_TMP_0~0;assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~main____CPAchecker_TMP_0~0 := #t~nondet5;havoc #t~nondet5; {88#(and (<= 0 main_~main__tagbuf_len~0) (= main_~main__t~0 0))} is VALID [2022-04-08 09:27:14,044 INFO L290 TraceCheckUtils]: 8: Hoare triple {88#(and (<= 0 main_~main__tagbuf_len~0) (= main_~main__t~0 0))} assume !(0 == ~main____CPAchecker_TMP_0~0);havoc ~__tmp_1~0;~__tmp_1~0 := (if 0 <= ~main__t~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~0;~__VERIFIER_assert__cond~0 := ~__tmp_1~0; {88#(and (<= 0 main_~main__tagbuf_len~0) (= main_~main__t~0 0))} is VALID [2022-04-08 09:27:14,045 INFO L290 TraceCheckUtils]: 9: Hoare triple {88#(and (<= 0 main_~main__tagbuf_len~0) (= main_~main__t~0 0))} assume !(0 == ~__VERIFIER_assert__cond~0);havoc ~__tmp_2~0;~__tmp_2~0 := (if ~main__t~0 <= ~main__tagbuf_len~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~1;~__VERIFIER_assert__cond~1 := ~__tmp_2~0; {89#(not (= main_~__VERIFIER_assert__cond~1 0))} is VALID [2022-04-08 09:27:14,045 INFO L290 TraceCheckUtils]: 10: Hoare triple {89#(not (= main_~__VERIFIER_assert__cond~1 0))} assume 0 == ~__VERIFIER_assert__cond~1; {84#false} is VALID [2022-04-08 09:27:14,046 INFO L290 TraceCheckUtils]: 11: Hoare triple {84#false} assume !false; {84#false} is VALID [2022-04-08 09:27:14,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-08 09:27:14,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 09:27:14,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240062654] [2022-04-08 09:27:14,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240062654] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 09:27:14,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 09:27:14,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-08 09:27:14,051 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 09:27:14,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1010557702] [2022-04-08 09:27:14,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1010557702] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 09:27:14,053 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 09:27:14,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-08 09:27:14,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370478328] [2022-04-08 09:27:14,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 09:27:14,059 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-04-08 09:27:14,061 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 09:27:14,063 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:14,082 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 12 edges. 12 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 09:27:14,082 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-08 09:27:14,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 09:27:14,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-08 09:27:14,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-08 09:27:14,104 INFO L87 Difference]: Start difference. First operand has 80 states, 57 states have (on average 1.8421052631578947) internal successors, (105), 75 states have internal predecessors, (105), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:14,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 09:27:14,593 INFO L93 Difference]: Finished difference Result 129 states and 172 transitions. [2022-04-08 09:27:14,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-08 09:27:14,594 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-04-08 09:27:14,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 09:27:14,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:14,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 172 transitions. [2022-04-08 09:27:14,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:14,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 172 transitions. [2022-04-08 09:27:14,607 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 8 states and 172 transitions. [2022-04-08 09:27:14,722 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 172 edges. 172 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 09:27:14,731 INFO L225 Difference]: With dead ends: 129 [2022-04-08 09:27:14,731 INFO L226 Difference]: Without dead ends: 111 [2022-04-08 09:27:14,733 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-04-08 09:27:14,748 INFO L913 BasicCegarLoop]: 81 mSDtfsCounter, 67 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-08 09:27:14,749 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 208 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-08 09:27:14,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-04-08 09:27:14,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 73. [2022-04-08 09:27:14,778 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 09:27:14,779 INFO L82 GeneralOperation]: Start isEquivalent. First operand 111 states. Second operand has 73 states, 53 states have (on average 1.3962264150943395) internal successors, (74), 69 states have internal predecessors, (74), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:14,780 INFO L74 IsIncluded]: Start isIncluded. First operand 111 states. Second operand has 73 states, 53 states have (on average 1.3962264150943395) internal successors, (74), 69 states have internal predecessors, (74), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:14,781 INFO L87 Difference]: Start difference. First operand 111 states. Second operand has 73 states, 53 states have (on average 1.3962264150943395) internal successors, (74), 69 states have internal predecessors, (74), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:14,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 09:27:14,785 INFO L93 Difference]: Finished difference Result 111 states and 117 transitions. [2022-04-08 09:27:14,786 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 117 transitions. [2022-04-08 09:27:14,786 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 09:27:14,786 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 09:27:14,787 INFO L74 IsIncluded]: Start isIncluded. First operand has 73 states, 53 states have (on average 1.3962264150943395) internal successors, (74), 69 states have internal predecessors, (74), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 111 states. [2022-04-08 09:27:14,787 INFO L87 Difference]: Start difference. First operand has 73 states, 53 states have (on average 1.3962264150943395) internal successors, (74), 69 states have internal predecessors, (74), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 111 states. [2022-04-08 09:27:14,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 09:27:14,792 INFO L93 Difference]: Finished difference Result 111 states and 117 transitions. [2022-04-08 09:27:14,792 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 117 transitions. [2022-04-08 09:27:14,792 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 09:27:14,793 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 09:27:14,793 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 09:27:14,793 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 09:27:14,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 53 states have (on average 1.3962264150943395) internal successors, (74), 69 states have internal predecessors, (74), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:14,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2022-04-08 09:27:14,796 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 12 [2022-04-08 09:27:14,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 09:27:14,797 INFO L478 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2022-04-08 09:27:14,797 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:14,797 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 73 states and 77 transitions. [2022-04-08 09:27:14,847 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 77 edges. 77 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 09:27:14,848 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2022-04-08 09:27:14,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-04-08 09:27:14,848 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 09:27:14,848 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 09:27:14,848 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-08 09:27:14,848 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr11ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-04-08 09:27:14,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 09:27:14,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1799639252, now seen corresponding path program 1 times [2022-04-08 09:27:14,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 09:27:14,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1690835628] [2022-04-08 09:27:14,850 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-08 09:27:14,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1799639252, now seen corresponding path program 2 times [2022-04-08 09:27:14,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 09:27:14,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313276451] [2022-04-08 09:27:14,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 09:27:14,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 09:27:14,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 09:27:14,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-08 09:27:14,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 09:27:14,904 INFO L290 TraceCheckUtils]: 0: Hoare triple {732#(and (= |old(~__return_305~0)| ~__return_305~0) (= |old(~__tmp_259_0~0)| ~__tmp_259_0~0) (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__tmp_383_0~0)| ~__tmp_383_0~0) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(33, 2);call #Ultimate.allocInit(12, 3);~__return_main~0 := 0;~__tmp_259_0~0 := 0;~__return_305~0 := 0;~__tmp_383_0~0 := 0; {725#true} is VALID [2022-04-08 09:27:14,904 INFO L290 TraceCheckUtils]: 1: Hoare triple {725#true} assume true; {725#true} is VALID [2022-04-08 09:27:14,904 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {725#true} {725#true} #191#return; {725#true} is VALID [2022-04-08 09:27:14,905 INFO L272 TraceCheckUtils]: 0: Hoare triple {725#true} call ULTIMATE.init(); {732#(and (= |old(~__return_305~0)| ~__return_305~0) (= |old(~__tmp_259_0~0)| ~__tmp_259_0~0) (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__tmp_383_0~0)| ~__tmp_383_0~0) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-08 09:27:14,905 INFO L290 TraceCheckUtils]: 1: Hoare triple {732#(and (= |old(~__return_305~0)| ~__return_305~0) (= |old(~__tmp_259_0~0)| ~__tmp_259_0~0) (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__tmp_383_0~0)| ~__tmp_383_0~0) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(33, 2);call #Ultimate.allocInit(12, 3);~__return_main~0 := 0;~__tmp_259_0~0 := 0;~__return_305~0 := 0;~__tmp_383_0~0 := 0; {725#true} is VALID [2022-04-08 09:27:14,905 INFO L290 TraceCheckUtils]: 2: Hoare triple {725#true} assume true; {725#true} is VALID [2022-04-08 09:27:14,906 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {725#true} {725#true} #191#return; {725#true} is VALID [2022-04-08 09:27:14,906 INFO L272 TraceCheckUtils]: 4: Hoare triple {725#true} call #t~ret10 := main(); {725#true} is VALID [2022-04-08 09:27:14,906 INFO L290 TraceCheckUtils]: 5: Hoare triple {725#true} havoc ~main__tagbuf_len~0;havoc ~main__t~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~main__tagbuf_len~0 := #t~nondet4;havoc #t~nondet4; {725#true} is VALID [2022-04-08 09:27:14,906 INFO L290 TraceCheckUtils]: 6: Hoare triple {725#true} assume ~main__tagbuf_len~0 >= 1;~main__t~0 := 0;~main__tagbuf_len~0 := ~main__tagbuf_len~0 - 1; {730#(and (<= 0 main_~main__tagbuf_len~0) (= main_~main__t~0 0))} is VALID [2022-04-08 09:27:14,907 INFO L290 TraceCheckUtils]: 7: Hoare triple {730#(and (<= 0 main_~main__tagbuf_len~0) (= main_~main__t~0 0))} assume !(~main__t~0 == ~main__tagbuf_len~0);havoc ~main____CPAchecker_TMP_0~0;assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~main____CPAchecker_TMP_0~0 := #t~nondet5;havoc #t~nondet5; {730#(and (<= 0 main_~main__tagbuf_len~0) (= main_~main__t~0 0))} is VALID [2022-04-08 09:27:14,907 INFO L290 TraceCheckUtils]: 8: Hoare triple {730#(and (<= 0 main_~main__tagbuf_len~0) (= main_~main__t~0 0))} assume !!(0 == ~main____CPAchecker_TMP_0~0);havoc ~__tmp_13~0;~__tmp_13~0 := (if 0 <= ~main__t~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~12;~__VERIFIER_assert__cond~12 := ~__tmp_13~0; {730#(and (<= 0 main_~main__tagbuf_len~0) (= main_~main__t~0 0))} is VALID [2022-04-08 09:27:14,908 INFO L290 TraceCheckUtils]: 9: Hoare triple {730#(and (<= 0 main_~main__tagbuf_len~0) (= main_~main__t~0 0))} assume !(0 == ~__VERIFIER_assert__cond~12);havoc ~__tmp_14~0;~__tmp_14~0 := (if ~main__t~0 <= ~main__tagbuf_len~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~13;~__VERIFIER_assert__cond~13 := ~__tmp_14~0; {731#(not (= main_~__VERIFIER_assert__cond~13 0))} is VALID [2022-04-08 09:27:14,908 INFO L290 TraceCheckUtils]: 10: Hoare triple {731#(not (= main_~__VERIFIER_assert__cond~13 0))} assume 0 == ~__VERIFIER_assert__cond~13; {726#false} is VALID [2022-04-08 09:27:14,908 INFO L290 TraceCheckUtils]: 11: Hoare triple {726#false} assume !false; {726#false} is VALID [2022-04-08 09:27:14,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-08 09:27:14,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 09:27:14,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313276451] [2022-04-08 09:27:14,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313276451] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 09:27:14,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 09:27:14,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-08 09:27:14,909 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 09:27:14,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1690835628] [2022-04-08 09:27:14,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1690835628] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 09:27:14,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 09:27:14,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-08 09:27:14,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716384537] [2022-04-08 09:27:14,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 09:27:14,910 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-04-08 09:27:14,911 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 09:27:14,911 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:14,920 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 12 edges. 12 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 09:27:14,920 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-08 09:27:14,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 09:27:14,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-08 09:27:14,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-08 09:27:14,921 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:15,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 09:27:15,260 INFO L93 Difference]: Finished difference Result 111 states and 117 transitions. [2022-04-08 09:27:15,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-08 09:27:15,260 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-04-08 09:27:15,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 09:27:15,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:15,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 117 transitions. [2022-04-08 09:27:15,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:15,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 117 transitions. [2022-04-08 09:27:15,264 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 8 states and 117 transitions. [2022-04-08 09:27:15,335 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 117 edges. 117 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 09:27:15,338 INFO L225 Difference]: With dead ends: 111 [2022-04-08 09:27:15,338 INFO L226 Difference]: Without dead ends: 109 [2022-04-08 09:27:15,338 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-04-08 09:27:15,339 INFO L913 BasicCegarLoop]: 106 mSDtfsCounter, 72 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-08 09:27:15,339 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 218 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-08 09:27:15,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-04-08 09:27:15,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 71. [2022-04-08 09:27:15,349 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 09:27:15,349 INFO L82 GeneralOperation]: Start isEquivalent. First operand 109 states. Second operand has 71 states, 52 states have (on average 1.3846153846153846) internal successors, (72), 67 states have internal predecessors, (72), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:15,349 INFO L74 IsIncluded]: Start isIncluded. First operand 109 states. Second operand has 71 states, 52 states have (on average 1.3846153846153846) internal successors, (72), 67 states have internal predecessors, (72), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:15,350 INFO L87 Difference]: Start difference. First operand 109 states. Second operand has 71 states, 52 states have (on average 1.3846153846153846) internal successors, (72), 67 states have internal predecessors, (72), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:15,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 09:27:15,352 INFO L93 Difference]: Finished difference Result 109 states and 115 transitions. [2022-04-08 09:27:15,352 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 115 transitions. [2022-04-08 09:27:15,353 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 09:27:15,353 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 09:27:15,353 INFO L74 IsIncluded]: Start isIncluded. First operand has 71 states, 52 states have (on average 1.3846153846153846) internal successors, (72), 67 states have internal predecessors, (72), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 109 states. [2022-04-08 09:27:15,353 INFO L87 Difference]: Start difference. First operand has 71 states, 52 states have (on average 1.3846153846153846) internal successors, (72), 67 states have internal predecessors, (72), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 109 states. [2022-04-08 09:27:15,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 09:27:15,356 INFO L93 Difference]: Finished difference Result 109 states and 115 transitions. [2022-04-08 09:27:15,356 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 115 transitions. [2022-04-08 09:27:15,357 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 09:27:15,357 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 09:27:15,357 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 09:27:15,357 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 09:27:15,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 52 states have (on average 1.3846153846153846) internal successors, (72), 67 states have internal predecessors, (72), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:15,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2022-04-08 09:27:15,359 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 12 [2022-04-08 09:27:15,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 09:27:15,359 INFO L478 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2022-04-08 09:27:15,359 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:15,359 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 71 states and 75 transitions. [2022-04-08 09:27:15,399 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 75 edges. 75 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 09:27:15,399 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2022-04-08 09:27:15,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-04-08 09:27:15,400 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 09:27:15,400 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 09:27:15,400 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-08 09:27:15,400 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-04-08 09:27:15,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 09:27:15,401 INFO L85 PathProgramCache]: Analyzing trace with hash -991466384, now seen corresponding path program 1 times [2022-04-08 09:27:15,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 09:27:15,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [553017881] [2022-04-08 09:27:15,401 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-08 09:27:15,401 INFO L85 PathProgramCache]: Analyzing trace with hash -991466384, now seen corresponding path program 2 times [2022-04-08 09:27:15,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 09:27:15,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176788269] [2022-04-08 09:27:15,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 09:27:15,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 09:27:15,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 09:27:15,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-08 09:27:15,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 09:27:15,457 INFO L290 TraceCheckUtils]: 0: Hoare triple {1331#(and (= |old(~__return_305~0)| ~__return_305~0) (= |old(~__tmp_259_0~0)| ~__tmp_259_0~0) (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__tmp_383_0~0)| ~__tmp_383_0~0) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(33, 2);call #Ultimate.allocInit(12, 3);~__return_main~0 := 0;~__tmp_259_0~0 := 0;~__return_305~0 := 0;~__tmp_383_0~0 := 0; {1323#true} is VALID [2022-04-08 09:27:15,458 INFO L290 TraceCheckUtils]: 1: Hoare triple {1323#true} assume true; {1323#true} is VALID [2022-04-08 09:27:15,458 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {1323#true} {1323#true} #191#return; {1323#true} is VALID [2022-04-08 09:27:15,458 INFO L272 TraceCheckUtils]: 0: Hoare triple {1323#true} call ULTIMATE.init(); {1331#(and (= |old(~__return_305~0)| ~__return_305~0) (= |old(~__tmp_259_0~0)| ~__tmp_259_0~0) (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__tmp_383_0~0)| ~__tmp_383_0~0) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-08 09:27:15,458 INFO L290 TraceCheckUtils]: 1: Hoare triple {1331#(and (= |old(~__return_305~0)| ~__return_305~0) (= |old(~__tmp_259_0~0)| ~__tmp_259_0~0) (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__tmp_383_0~0)| ~__tmp_383_0~0) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(33, 2);call #Ultimate.allocInit(12, 3);~__return_main~0 := 0;~__tmp_259_0~0 := 0;~__return_305~0 := 0;~__tmp_383_0~0 := 0; {1323#true} is VALID [2022-04-08 09:27:15,459 INFO L290 TraceCheckUtils]: 2: Hoare triple {1323#true} assume true; {1323#true} is VALID [2022-04-08 09:27:15,459 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {1323#true} {1323#true} #191#return; {1323#true} is VALID [2022-04-08 09:27:15,459 INFO L272 TraceCheckUtils]: 4: Hoare triple {1323#true} call #t~ret10 := main(); {1323#true} is VALID [2022-04-08 09:27:15,459 INFO L290 TraceCheckUtils]: 5: Hoare triple {1323#true} havoc ~main__tagbuf_len~0;havoc ~main__t~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~main__tagbuf_len~0 := #t~nondet4;havoc #t~nondet4; {1323#true} is VALID [2022-04-08 09:27:15,459 INFO L290 TraceCheckUtils]: 6: Hoare triple {1323#true} assume ~main__tagbuf_len~0 >= 1;~main__t~0 := 0;~main__tagbuf_len~0 := ~main__tagbuf_len~0 - 1; {1328#(= main_~main__t~0 0)} is VALID [2022-04-08 09:27:15,460 INFO L290 TraceCheckUtils]: 7: Hoare triple {1328#(= main_~main__t~0 0)} assume !(~main__t~0 == ~main__tagbuf_len~0);havoc ~main____CPAchecker_TMP_0~0;assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~main____CPAchecker_TMP_0~0 := #t~nondet5;havoc #t~nondet5; {1328#(= main_~main__t~0 0)} is VALID [2022-04-08 09:27:15,460 INFO L290 TraceCheckUtils]: 8: Hoare triple {1328#(= main_~main__t~0 0)} assume !(0 == ~main____CPAchecker_TMP_0~0);havoc ~__tmp_1~0;~__tmp_1~0 := (if 0 <= ~main__t~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~0;~__VERIFIER_assert__cond~0 := ~__tmp_1~0; {1328#(= main_~main__t~0 0)} is VALID [2022-04-08 09:27:15,460 INFO L290 TraceCheckUtils]: 9: Hoare triple {1328#(= main_~main__t~0 0)} assume !(0 == ~__VERIFIER_assert__cond~0);havoc ~__tmp_2~0;~__tmp_2~0 := (if ~main__t~0 <= ~main__tagbuf_len~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~1;~__VERIFIER_assert__cond~1 := ~__tmp_2~0; {1328#(= main_~main__t~0 0)} is VALID [2022-04-08 09:27:15,461 INFO L290 TraceCheckUtils]: 10: Hoare triple {1328#(= main_~main__t~0 0)} assume !(0 == ~__VERIFIER_assert__cond~1);~__tmp_259_0~0 := ~main____CPAchecker_TMP_0~0; {1328#(= main_~main__t~0 0)} is VALID [2022-04-08 09:27:15,461 INFO L290 TraceCheckUtils]: 11: Hoare triple {1328#(= main_~main__t~0 0)} ~main____CPAchecker_TMP_0~0 := ~__tmp_259_0~0;~main____CPAchecker_TMP_2~0 := ~main__t~0;~main__t~0 := 1 + ~main__t~0; {1329#(<= 1 main_~main__t~0)} is VALID [2022-04-08 09:27:15,461 INFO L290 TraceCheckUtils]: 12: Hoare triple {1329#(<= 1 main_~main__t~0)} assume ~main__t~0 == ~main__tagbuf_len~0;havoc ~__tmp_3~0;~__tmp_3~0 := (if 0 <= ~main__t~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~2;~__VERIFIER_assert__cond~2 := ~__tmp_3~0; {1330#(not (= main_~__VERIFIER_assert__cond~2 0))} is VALID [2022-04-08 09:27:15,462 INFO L290 TraceCheckUtils]: 13: Hoare triple {1330#(not (= main_~__VERIFIER_assert__cond~2 0))} assume 0 == ~__VERIFIER_assert__cond~2; {1324#false} is VALID [2022-04-08 09:27:15,462 INFO L290 TraceCheckUtils]: 14: Hoare triple {1324#false} assume !false; {1324#false} is VALID [2022-04-08 09:27:15,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-08 09:27:15,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 09:27:15,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176788269] [2022-04-08 09:27:15,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176788269] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 09:27:15,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 09:27:15,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-08 09:27:15,463 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 09:27:15,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [553017881] [2022-04-08 09:27:15,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [553017881] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 09:27:15,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 09:27:15,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-08 09:27:15,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50129787] [2022-04-08 09:27:15,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 09:27:15,464 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-04-08 09:27:15,464 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 09:27:15,464 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:15,472 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 15 edges. 15 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 09:27:15,472 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-08 09:27:15,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 09:27:15,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-08 09:27:15,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-04-08 09:27:15,473 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:15,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 09:27:15,782 INFO L93 Difference]: Finished difference Result 73 states and 77 transitions. [2022-04-08 09:27:15,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-08 09:27:15,782 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-04-08 09:27:15,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 09:27:15,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:15,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 77 transitions. [2022-04-08 09:27:15,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:15,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 77 transitions. [2022-04-08 09:27:15,784 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 7 states and 77 transitions. [2022-04-08 09:27:15,824 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 77 edges. 77 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 09:27:15,825 INFO L225 Difference]: With dead ends: 73 [2022-04-08 09:27:15,825 INFO L226 Difference]: Without dead ends: 71 [2022-04-08 09:27:15,826 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-04-08 09:27:15,826 INFO L913 BasicCegarLoop]: 45 mSDtfsCounter, 68 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-08 09:27:15,827 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 132 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-08 09:27:15,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-04-08 09:27:15,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 69. [2022-04-08 09:27:15,860 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 09:27:15,860 INFO L82 GeneralOperation]: Start isEquivalent. First operand 71 states. Second operand has 69 states, 51 states have (on average 1.3725490196078431) internal successors, (70), 65 states have internal predecessors, (70), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:15,860 INFO L74 IsIncluded]: Start isIncluded. First operand 71 states. Second operand has 69 states, 51 states have (on average 1.3725490196078431) internal successors, (70), 65 states have internal predecessors, (70), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:15,860 INFO L87 Difference]: Start difference. First operand 71 states. Second operand has 69 states, 51 states have (on average 1.3725490196078431) internal successors, (70), 65 states have internal predecessors, (70), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:15,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 09:27:15,862 INFO L93 Difference]: Finished difference Result 71 states and 75 transitions. [2022-04-08 09:27:15,862 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2022-04-08 09:27:15,862 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 09:27:15,862 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 09:27:15,863 INFO L74 IsIncluded]: Start isIncluded. First operand has 69 states, 51 states have (on average 1.3725490196078431) internal successors, (70), 65 states have internal predecessors, (70), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 71 states. [2022-04-08 09:27:15,863 INFO L87 Difference]: Start difference. First operand has 69 states, 51 states have (on average 1.3725490196078431) internal successors, (70), 65 states have internal predecessors, (70), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 71 states. [2022-04-08 09:27:15,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 09:27:15,864 INFO L93 Difference]: Finished difference Result 71 states and 75 transitions. [2022-04-08 09:27:15,865 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2022-04-08 09:27:15,865 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 09:27:15,865 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 09:27:15,865 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 09:27:15,865 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 09:27:15,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 51 states have (on average 1.3725490196078431) internal successors, (70), 65 states have internal predecessors, (70), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:15,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2022-04-08 09:27:15,867 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 15 [2022-04-08 09:27:15,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 09:27:15,867 INFO L478 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2022-04-08 09:27:15,867 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:15,867 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 69 states and 73 transitions. [2022-04-08 09:27:15,909 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 73 edges. 73 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 09:27:15,909 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2022-04-08 09:27:15,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-04-08 09:27:15,909 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 09:27:15,909 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 09:27:15,909 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-08 09:27:15,910 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr12ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-04-08 09:27:15,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 09:27:15,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1020772778, now seen corresponding path program 1 times [2022-04-08 09:27:15,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 09:27:15,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [654340021] [2022-04-08 09:27:15,910 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-08 09:27:15,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1020772778, now seen corresponding path program 2 times [2022-04-08 09:27:15,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 09:27:15,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782102846] [2022-04-08 09:27:15,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 09:27:15,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 09:27:15,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 09:27:15,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-08 09:27:15,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 09:27:15,982 INFO L290 TraceCheckUtils]: 0: Hoare triple {1772#(and (= |old(~__return_305~0)| ~__return_305~0) (= |old(~__tmp_259_0~0)| ~__tmp_259_0~0) (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__tmp_383_0~0)| ~__tmp_383_0~0) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(33, 2);call #Ultimate.allocInit(12, 3);~__return_main~0 := 0;~__tmp_259_0~0 := 0;~__return_305~0 := 0;~__tmp_383_0~0 := 0; {1764#true} is VALID [2022-04-08 09:27:15,985 INFO L290 TraceCheckUtils]: 1: Hoare triple {1764#true} assume true; {1764#true} is VALID [2022-04-08 09:27:15,985 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {1764#true} {1764#true} #191#return; {1764#true} is VALID [2022-04-08 09:27:15,986 INFO L272 TraceCheckUtils]: 0: Hoare triple {1764#true} call ULTIMATE.init(); {1772#(and (= |old(~__return_305~0)| ~__return_305~0) (= |old(~__tmp_259_0~0)| ~__tmp_259_0~0) (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__tmp_383_0~0)| ~__tmp_383_0~0) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-08 09:27:15,986 INFO L290 TraceCheckUtils]: 1: Hoare triple {1772#(and (= |old(~__return_305~0)| ~__return_305~0) (= |old(~__tmp_259_0~0)| ~__tmp_259_0~0) (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__tmp_383_0~0)| ~__tmp_383_0~0) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(33, 2);call #Ultimate.allocInit(12, 3);~__return_main~0 := 0;~__tmp_259_0~0 := 0;~__return_305~0 := 0;~__tmp_383_0~0 := 0; {1764#true} is VALID [2022-04-08 09:27:15,986 INFO L290 TraceCheckUtils]: 2: Hoare triple {1764#true} assume true; {1764#true} is VALID [2022-04-08 09:27:15,987 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {1764#true} {1764#true} #191#return; {1764#true} is VALID [2022-04-08 09:27:15,987 INFO L272 TraceCheckUtils]: 4: Hoare triple {1764#true} call #t~ret10 := main(); {1764#true} is VALID [2022-04-08 09:27:15,987 INFO L290 TraceCheckUtils]: 5: Hoare triple {1764#true} havoc ~main__tagbuf_len~0;havoc ~main__t~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~main__tagbuf_len~0 := #t~nondet4;havoc #t~nondet4; {1764#true} is VALID [2022-04-08 09:27:15,987 INFO L290 TraceCheckUtils]: 6: Hoare triple {1764#true} assume ~main__tagbuf_len~0 >= 1;~main__t~0 := 0;~main__tagbuf_len~0 := ~main__tagbuf_len~0 - 1; {1769#(= main_~main__t~0 0)} is VALID [2022-04-08 09:27:15,987 INFO L290 TraceCheckUtils]: 7: Hoare triple {1769#(= main_~main__t~0 0)} assume !(~main__t~0 == ~main__tagbuf_len~0);havoc ~main____CPAchecker_TMP_0~0;assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~main____CPAchecker_TMP_0~0 := #t~nondet5;havoc #t~nondet5; {1769#(= main_~main__t~0 0)} is VALID [2022-04-08 09:27:15,988 INFO L290 TraceCheckUtils]: 8: Hoare triple {1769#(= main_~main__t~0 0)} assume !!(0 == ~main____CPAchecker_TMP_0~0);havoc ~__tmp_13~0;~__tmp_13~0 := (if 0 <= ~main__t~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~12;~__VERIFIER_assert__cond~12 := ~__tmp_13~0; {1769#(= main_~main__t~0 0)} is VALID [2022-04-08 09:27:15,988 INFO L290 TraceCheckUtils]: 9: Hoare triple {1769#(= main_~main__t~0 0)} assume !(0 == ~__VERIFIER_assert__cond~12);havoc ~__tmp_14~0;~__tmp_14~0 := (if ~main__t~0 <= ~main__tagbuf_len~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~13;~__VERIFIER_assert__cond~13 := ~__tmp_14~0; {1769#(= main_~main__t~0 0)} is VALID [2022-04-08 09:27:15,988 INFO L290 TraceCheckUtils]: 10: Hoare triple {1769#(= main_~main__t~0 0)} assume !(0 == ~__VERIFIER_assert__cond~13);~__tmp_383_0~0 := ~main____CPAchecker_TMP_0~0; {1769#(= main_~main__t~0 0)} is VALID [2022-04-08 09:27:15,989 INFO L290 TraceCheckUtils]: 11: Hoare triple {1769#(= main_~main__t~0 0)} ~main____CPAchecker_TMP_0~0 := ~__tmp_383_0~0;~main____CPAchecker_TMP_1~0 := ~main__t~0;~main__t~0 := 1 + ~main__t~0; {1770#(<= 1 main_~main__t~0)} is VALID [2022-04-08 09:27:15,989 INFO L290 TraceCheckUtils]: 12: Hoare triple {1770#(<= 1 main_~main__t~0)} assume ~main__t~0 == ~main__tagbuf_len~0;havoc ~__tmp_15~0;~__tmp_15~0 := (if 0 <= ~main__t~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~14;~__VERIFIER_assert__cond~14 := ~__tmp_15~0; {1771#(not (= main_~__VERIFIER_assert__cond~14 0))} is VALID [2022-04-08 09:27:15,990 INFO L290 TraceCheckUtils]: 13: Hoare triple {1771#(not (= main_~__VERIFIER_assert__cond~14 0))} assume 0 == ~__VERIFIER_assert__cond~14; {1765#false} is VALID [2022-04-08 09:27:15,990 INFO L290 TraceCheckUtils]: 14: Hoare triple {1765#false} assume !false; {1765#false} is VALID [2022-04-08 09:27:15,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-08 09:27:15,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 09:27:15,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782102846] [2022-04-08 09:27:15,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782102846] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 09:27:15,990 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 09:27:15,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-08 09:27:15,990 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 09:27:15,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [654340021] [2022-04-08 09:27:15,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [654340021] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 09:27:15,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 09:27:15,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-08 09:27:15,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960425024] [2022-04-08 09:27:15,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 09:27:15,991 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-04-08 09:27:15,991 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 09:27:15,991 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:16,000 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 15 edges. 15 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 09:27:16,000 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-08 09:27:16,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 09:27:16,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-08 09:27:16,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-04-08 09:27:16,001 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:16,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 09:27:16,274 INFO L93 Difference]: Finished difference Result 71 states and 75 transitions. [2022-04-08 09:27:16,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-08 09:27:16,274 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-04-08 09:27:16,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 09:27:16,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:16,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 75 transitions. [2022-04-08 09:27:16,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:16,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 75 transitions. [2022-04-08 09:27:16,277 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 7 states and 75 transitions. [2022-04-08 09:27:16,323 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 75 edges. 75 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 09:27:16,325 INFO L225 Difference]: With dead ends: 71 [2022-04-08 09:27:16,325 INFO L226 Difference]: Without dead ends: 69 [2022-04-08 09:27:16,325 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-04-08 09:27:16,326 INFO L913 BasicCegarLoop]: 43 mSDtfsCounter, 66 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-08 09:27:16,326 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 126 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-08 09:27:16,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-04-08 09:27:16,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 67. [2022-04-08 09:27:16,359 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 09:27:16,360 INFO L82 GeneralOperation]: Start isEquivalent. First operand 69 states. Second operand has 67 states, 50 states have (on average 1.36) internal successors, (68), 63 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:16,360 INFO L74 IsIncluded]: Start isIncluded. First operand 69 states. Second operand has 67 states, 50 states have (on average 1.36) internal successors, (68), 63 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:16,360 INFO L87 Difference]: Start difference. First operand 69 states. Second operand has 67 states, 50 states have (on average 1.36) internal successors, (68), 63 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:16,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 09:27:16,361 INFO L93 Difference]: Finished difference Result 69 states and 73 transitions. [2022-04-08 09:27:16,362 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2022-04-08 09:27:16,362 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 09:27:16,362 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 09:27:16,362 INFO L74 IsIncluded]: Start isIncluded. First operand has 67 states, 50 states have (on average 1.36) internal successors, (68), 63 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 69 states. [2022-04-08 09:27:16,362 INFO L87 Difference]: Start difference. First operand has 67 states, 50 states have (on average 1.36) internal successors, (68), 63 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 69 states. [2022-04-08 09:27:16,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 09:27:16,364 INFO L93 Difference]: Finished difference Result 69 states and 73 transitions. [2022-04-08 09:27:16,364 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2022-04-08 09:27:16,364 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 09:27:16,364 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 09:27:16,364 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 09:27:16,364 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 09:27:16,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 50 states have (on average 1.36) internal successors, (68), 63 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:16,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2022-04-08 09:27:16,365 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 15 [2022-04-08 09:27:16,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 09:27:16,366 INFO L478 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2022-04-08 09:27:16,366 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:16,366 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 67 states and 71 transitions. [2022-04-08 09:27:16,419 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 71 edges. 71 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 09:27:16,420 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2022-04-08 09:27:16,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-04-08 09:27:16,420 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 09:27:16,420 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 09:27:16,420 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-04-08 09:27:16,420 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-04-08 09:27:16,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 09:27:16,421 INFO L85 PathProgramCache]: Analyzing trace with hash -670683748, now seen corresponding path program 1 times [2022-04-08 09:27:16,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 09:27:16,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1558993549] [2022-04-08 09:27:16,421 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-08 09:27:16,421 INFO L85 PathProgramCache]: Analyzing trace with hash -670683748, now seen corresponding path program 2 times [2022-04-08 09:27:16,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 09:27:16,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511097035] [2022-04-08 09:27:16,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 09:27:16,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 09:27:16,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 09:27:16,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-08 09:27:16,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 09:27:16,481 INFO L290 TraceCheckUtils]: 0: Hoare triple {2200#(and (= |old(~__return_305~0)| ~__return_305~0) (= |old(~__tmp_259_0~0)| ~__tmp_259_0~0) (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__tmp_383_0~0)| ~__tmp_383_0~0) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(33, 2);call #Ultimate.allocInit(12, 3);~__return_main~0 := 0;~__tmp_259_0~0 := 0;~__return_305~0 := 0;~__tmp_383_0~0 := 0; {2193#true} is VALID [2022-04-08 09:27:16,481 INFO L290 TraceCheckUtils]: 1: Hoare triple {2193#true} assume true; {2193#true} is VALID [2022-04-08 09:27:16,481 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {2193#true} {2193#true} #191#return; {2193#true} is VALID [2022-04-08 09:27:16,481 INFO L272 TraceCheckUtils]: 0: Hoare triple {2193#true} call ULTIMATE.init(); {2200#(and (= |old(~__return_305~0)| ~__return_305~0) (= |old(~__tmp_259_0~0)| ~__tmp_259_0~0) (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__tmp_383_0~0)| ~__tmp_383_0~0) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-08 09:27:16,482 INFO L290 TraceCheckUtils]: 1: Hoare triple {2200#(and (= |old(~__return_305~0)| ~__return_305~0) (= |old(~__tmp_259_0~0)| ~__tmp_259_0~0) (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__tmp_383_0~0)| ~__tmp_383_0~0) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(33, 2);call #Ultimate.allocInit(12, 3);~__return_main~0 := 0;~__tmp_259_0~0 := 0;~__return_305~0 := 0;~__tmp_383_0~0 := 0; {2193#true} is VALID [2022-04-08 09:27:16,482 INFO L290 TraceCheckUtils]: 2: Hoare triple {2193#true} assume true; {2193#true} is VALID [2022-04-08 09:27:16,482 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {2193#true} {2193#true} #191#return; {2193#true} is VALID [2022-04-08 09:27:16,482 INFO L272 TraceCheckUtils]: 4: Hoare triple {2193#true} call #t~ret10 := main(); {2193#true} is VALID [2022-04-08 09:27:16,482 INFO L290 TraceCheckUtils]: 5: Hoare triple {2193#true} havoc ~main__tagbuf_len~0;havoc ~main__t~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~main__tagbuf_len~0 := #t~nondet4;havoc #t~nondet4; {2193#true} is VALID [2022-04-08 09:27:16,482 INFO L290 TraceCheckUtils]: 6: Hoare triple {2193#true} assume ~main__tagbuf_len~0 >= 1;~main__t~0 := 0;~main__tagbuf_len~0 := ~main__tagbuf_len~0 - 1; {2193#true} is VALID [2022-04-08 09:27:16,482 INFO L290 TraceCheckUtils]: 7: Hoare triple {2193#true} assume !(~main__t~0 == ~main__tagbuf_len~0);havoc ~main____CPAchecker_TMP_0~0;assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~main____CPAchecker_TMP_0~0 := #t~nondet5;havoc #t~nondet5; {2193#true} is VALID [2022-04-08 09:27:16,482 INFO L290 TraceCheckUtils]: 8: Hoare triple {2193#true} assume !(0 == ~main____CPAchecker_TMP_0~0);havoc ~__tmp_1~0;~__tmp_1~0 := (if 0 <= ~main__t~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~0;~__VERIFIER_assert__cond~0 := ~__tmp_1~0; {2193#true} is VALID [2022-04-08 09:27:16,483 INFO L290 TraceCheckUtils]: 9: Hoare triple {2193#true} assume !(0 == ~__VERIFIER_assert__cond~0);havoc ~__tmp_2~0;~__tmp_2~0 := (if ~main__t~0 <= ~main__tagbuf_len~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~1;~__VERIFIER_assert__cond~1 := ~__tmp_2~0; {2193#true} is VALID [2022-04-08 09:27:16,483 INFO L290 TraceCheckUtils]: 10: Hoare triple {2193#true} assume !(0 == ~__VERIFIER_assert__cond~1);~__tmp_259_0~0 := ~main____CPAchecker_TMP_0~0; {2193#true} is VALID [2022-04-08 09:27:16,483 INFO L290 TraceCheckUtils]: 11: Hoare triple {2193#true} ~main____CPAchecker_TMP_0~0 := ~__tmp_259_0~0;~main____CPAchecker_TMP_2~0 := ~main__t~0;~main__t~0 := 1 + ~main__t~0; {2193#true} is VALID [2022-04-08 09:27:16,483 INFO L290 TraceCheckUtils]: 12: Hoare triple {2193#true} assume ~main__t~0 == ~main__tagbuf_len~0;havoc ~__tmp_3~0;~__tmp_3~0 := (if 0 <= ~main__t~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~2;~__VERIFIER_assert__cond~2 := ~__tmp_3~0; {2198#(<= main_~main__t~0 main_~main__tagbuf_len~0)} is VALID [2022-04-08 09:27:16,484 INFO L290 TraceCheckUtils]: 13: Hoare triple {2198#(<= main_~main__t~0 main_~main__tagbuf_len~0)} assume !(0 == ~__VERIFIER_assert__cond~2);havoc ~__tmp_4~0;~__tmp_4~0 := (if ~main__t~0 <= ~main__tagbuf_len~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~3;~__VERIFIER_assert__cond~3 := ~__tmp_4~0; {2199#(not (= main_~__VERIFIER_assert__cond~3 0))} is VALID [2022-04-08 09:27:16,484 INFO L290 TraceCheckUtils]: 14: Hoare triple {2199#(not (= main_~__VERIFIER_assert__cond~3 0))} assume 0 == ~__VERIFIER_assert__cond~3; {2194#false} is VALID [2022-04-08 09:27:16,484 INFO L290 TraceCheckUtils]: 15: Hoare triple {2194#false} assume !false; {2194#false} is VALID [2022-04-08 09:27:16,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-08 09:27:16,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 09:27:16,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511097035] [2022-04-08 09:27:16,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511097035] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 09:27:16,485 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 09:27:16,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-08 09:27:16,485 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 09:27:16,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1558993549] [2022-04-08 09:27:16,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1558993549] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 09:27:16,485 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 09:27:16,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-08 09:27:16,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189710989] [2022-04-08 09:27:16,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 09:27:16,485 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-04-08 09:27:16,486 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 09:27:16,486 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:16,494 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 16 edges. 16 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 09:27:16,494 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-08 09:27:16,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 09:27:16,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-08 09:27:16,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-08 09:27:16,495 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:16,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 09:27:16,727 INFO L93 Difference]: Finished difference Result 69 states and 73 transitions. [2022-04-08 09:27:16,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-08 09:27:16,728 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-04-08 09:27:16,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 09:27:16,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:16,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 73 transitions. [2022-04-08 09:27:16,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:16,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 73 transitions. [2022-04-08 09:27:16,730 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 6 states and 73 transitions. [2022-04-08 09:27:16,773 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 73 edges. 73 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 09:27:16,774 INFO L225 Difference]: With dead ends: 69 [2022-04-08 09:27:16,774 INFO L226 Difference]: Without dead ends: 65 [2022-04-08 09:27:16,775 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-04-08 09:27:16,775 INFO L913 BasicCegarLoop]: 59 mSDtfsCounter, 23 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-08 09:27:16,776 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 147 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-08 09:27:16,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-04-08 09:27:16,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 63. [2022-04-08 09:27:16,811 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 09:27:16,812 INFO L82 GeneralOperation]: Start isEquivalent. First operand 65 states. Second operand has 63 states, 47 states have (on average 1.3617021276595744) internal successors, (64), 59 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:16,812 INFO L74 IsIncluded]: Start isIncluded. First operand 65 states. Second operand has 63 states, 47 states have (on average 1.3617021276595744) internal successors, (64), 59 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:16,812 INFO L87 Difference]: Start difference. First operand 65 states. Second operand has 63 states, 47 states have (on average 1.3617021276595744) internal successors, (64), 59 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:16,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 09:27:16,814 INFO L93 Difference]: Finished difference Result 65 states and 69 transitions. [2022-04-08 09:27:16,814 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2022-04-08 09:27:16,814 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 09:27:16,814 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 09:27:16,814 INFO L74 IsIncluded]: Start isIncluded. First operand has 63 states, 47 states have (on average 1.3617021276595744) internal successors, (64), 59 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 65 states. [2022-04-08 09:27:16,814 INFO L87 Difference]: Start difference. First operand has 63 states, 47 states have (on average 1.3617021276595744) internal successors, (64), 59 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 65 states. [2022-04-08 09:27:16,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 09:27:16,816 INFO L93 Difference]: Finished difference Result 65 states and 69 transitions. [2022-04-08 09:27:16,816 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2022-04-08 09:27:16,816 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 09:27:16,816 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 09:27:16,816 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 09:27:16,816 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 09:27:16,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 47 states have (on average 1.3617021276595744) internal successors, (64), 59 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:16,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2022-04-08 09:27:16,818 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 16 [2022-04-08 09:27:16,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 09:27:16,818 INFO L478 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2022-04-08 09:27:16,818 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:16,818 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 63 states and 67 transitions. [2022-04-08 09:27:16,857 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 67 edges. 67 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 09:27:16,857 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2022-04-08 09:27:16,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-04-08 09:27:16,857 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 09:27:16,857 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 09:27:16,857 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-04-08 09:27:16,857 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr16ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-04-08 09:27:16,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 09:27:16,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1578739961, now seen corresponding path program 1 times [2022-04-08 09:27:16,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 09:27:16,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1916826127] [2022-04-08 09:27:16,858 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-08 09:27:16,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1578739961, now seen corresponding path program 2 times [2022-04-08 09:27:16,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 09:27:16,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066827842] [2022-04-08 09:27:16,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 09:27:16,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 09:27:16,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 09:27:16,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-08 09:27:16,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 09:27:16,912 INFO L290 TraceCheckUtils]: 0: Hoare triple {2610#(and (= |old(~__return_305~0)| ~__return_305~0) (= |old(~__tmp_259_0~0)| ~__tmp_259_0~0) (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__tmp_383_0~0)| ~__tmp_383_0~0) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(33, 2);call #Ultimate.allocInit(12, 3);~__return_main~0 := 0;~__tmp_259_0~0 := 0;~__return_305~0 := 0;~__tmp_383_0~0 := 0; {2602#true} is VALID [2022-04-08 09:27:16,947 INFO L290 TraceCheckUtils]: 1: Hoare triple {2602#true} assume true; {2602#true} is VALID [2022-04-08 09:27:16,947 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {2602#true} {2602#true} #191#return; {2602#true} is VALID [2022-04-08 09:27:16,948 INFO L272 TraceCheckUtils]: 0: Hoare triple {2602#true} call ULTIMATE.init(); {2610#(and (= |old(~__return_305~0)| ~__return_305~0) (= |old(~__tmp_259_0~0)| ~__tmp_259_0~0) (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__tmp_383_0~0)| ~__tmp_383_0~0) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-08 09:27:16,948 INFO L290 TraceCheckUtils]: 1: Hoare triple {2610#(and (= |old(~__return_305~0)| ~__return_305~0) (= |old(~__tmp_259_0~0)| ~__tmp_259_0~0) (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__tmp_383_0~0)| ~__tmp_383_0~0) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(33, 2);call #Ultimate.allocInit(12, 3);~__return_main~0 := 0;~__tmp_259_0~0 := 0;~__return_305~0 := 0;~__tmp_383_0~0 := 0; {2602#true} is VALID [2022-04-08 09:27:16,948 INFO L290 TraceCheckUtils]: 2: Hoare triple {2602#true} assume true; {2602#true} is VALID [2022-04-08 09:27:16,948 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {2602#true} {2602#true} #191#return; {2602#true} is VALID [2022-04-08 09:27:16,948 INFO L272 TraceCheckUtils]: 4: Hoare triple {2602#true} call #t~ret10 := main(); {2602#true} is VALID [2022-04-08 09:27:16,948 INFO L290 TraceCheckUtils]: 5: Hoare triple {2602#true} havoc ~main__tagbuf_len~0;havoc ~main__t~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~main__tagbuf_len~0 := #t~nondet4;havoc #t~nondet4; {2602#true} is VALID [2022-04-08 09:27:16,949 INFO L290 TraceCheckUtils]: 6: Hoare triple {2602#true} assume ~main__tagbuf_len~0 >= 1;~main__t~0 := 0;~main__tagbuf_len~0 := ~main__tagbuf_len~0 - 1; {2607#(= main_~main__t~0 0)} is VALID [2022-04-08 09:27:16,949 INFO L290 TraceCheckUtils]: 7: Hoare triple {2607#(= main_~main__t~0 0)} assume !(~main__t~0 == ~main__tagbuf_len~0);havoc ~main____CPAchecker_TMP_0~0;assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~main____CPAchecker_TMP_0~0 := #t~nondet5;havoc #t~nondet5; {2607#(= main_~main__t~0 0)} is VALID [2022-04-08 09:27:16,949 INFO L290 TraceCheckUtils]: 8: Hoare triple {2607#(= main_~main__t~0 0)} assume !!(0 == ~main____CPAchecker_TMP_0~0);havoc ~__tmp_13~0;~__tmp_13~0 := (if 0 <= ~main__t~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~12;~__VERIFIER_assert__cond~12 := ~__tmp_13~0; {2607#(= main_~main__t~0 0)} is VALID [2022-04-08 09:27:16,949 INFO L290 TraceCheckUtils]: 9: Hoare triple {2607#(= main_~main__t~0 0)} assume !(0 == ~__VERIFIER_assert__cond~12);havoc ~__tmp_14~0;~__tmp_14~0 := (if ~main__t~0 <= ~main__tagbuf_len~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~13;~__VERIFIER_assert__cond~13 := ~__tmp_14~0; {2607#(= main_~main__t~0 0)} is VALID [2022-04-08 09:27:16,950 INFO L290 TraceCheckUtils]: 10: Hoare triple {2607#(= main_~main__t~0 0)} assume !(0 == ~__VERIFIER_assert__cond~13);~__tmp_383_0~0 := ~main____CPAchecker_TMP_0~0; {2607#(= main_~main__t~0 0)} is VALID [2022-04-08 09:27:16,950 INFO L290 TraceCheckUtils]: 11: Hoare triple {2607#(= main_~main__t~0 0)} ~main____CPAchecker_TMP_0~0 := ~__tmp_383_0~0;~main____CPAchecker_TMP_1~0 := ~main__t~0;~main__t~0 := 1 + ~main__t~0; {2608#(<= 1 main_~main__t~0)} is VALID [2022-04-08 09:27:16,950 INFO L290 TraceCheckUtils]: 12: Hoare triple {2608#(<= 1 main_~main__t~0)} assume !(~main__t~0 == ~main__tagbuf_len~0);havoc ~main____CPAchecker_TMP_0~1;assume -2147483648 <= #t~nondet9 && #t~nondet9 <= 2147483647;~main____CPAchecker_TMP_0~1 := #t~nondet9;havoc #t~nondet9; {2608#(<= 1 main_~main__t~0)} is VALID [2022-04-08 09:27:16,951 INFO L290 TraceCheckUtils]: 13: Hoare triple {2608#(<= 1 main_~main__t~0)} assume !!(0 == ~main____CPAchecker_TMP_0~1);havoc ~__tmp_19~0;~__tmp_19~0 := (if 0 <= ~main__t~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~18;~__VERIFIER_assert__cond~18 := ~__tmp_19~0; {2609#(not (= main_~__VERIFIER_assert__cond~18 0))} is VALID [2022-04-08 09:27:16,951 INFO L290 TraceCheckUtils]: 14: Hoare triple {2609#(not (= main_~__VERIFIER_assert__cond~18 0))} assume 0 == ~__VERIFIER_assert__cond~18; {2603#false} is VALID [2022-04-08 09:27:16,951 INFO L290 TraceCheckUtils]: 15: Hoare triple {2603#false} assume !false; {2603#false} is VALID [2022-04-08 09:27:16,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-08 09:27:16,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 09:27:16,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066827842] [2022-04-08 09:27:16,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066827842] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 09:27:16,952 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 09:27:16,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-08 09:27:16,952 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 09:27:16,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1916826127] [2022-04-08 09:27:16,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1916826127] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 09:27:16,952 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 09:27:16,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-08 09:27:16,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455852888] [2022-04-08 09:27:16,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 09:27:16,953 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-04-08 09:27:16,953 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 09:27:16,953 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:16,961 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 16 edges. 16 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 09:27:16,962 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-08 09:27:16,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 09:27:16,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-08 09:27:16,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-04-08 09:27:16,962 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:17,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 09:27:17,362 INFO L93 Difference]: Finished difference Result 108 states and 115 transitions. [2022-04-08 09:27:17,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-08 09:27:17,362 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-04-08 09:27:17,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 09:27:17,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:17,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 115 transitions. [2022-04-08 09:27:17,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:17,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 115 transitions. [2022-04-08 09:27:17,365 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 7 states and 115 transitions. [2022-04-08 09:27:17,439 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 115 edges. 115 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 09:27:17,441 INFO L225 Difference]: With dead ends: 108 [2022-04-08 09:27:17,441 INFO L226 Difference]: Without dead ends: 106 [2022-04-08 09:27:17,441 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-04-08 09:27:17,441 INFO L913 BasicCegarLoop]: 66 mSDtfsCounter, 102 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-08 09:27:17,442 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 167 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-08 09:27:17,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-04-08 09:27:17,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 61. [2022-04-08 09:27:17,483 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 09:27:17,483 INFO L82 GeneralOperation]: Start isEquivalent. First operand 106 states. Second operand has 61 states, 46 states have (on average 1.3478260869565217) internal successors, (62), 57 states have internal predecessors, (62), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:17,483 INFO L74 IsIncluded]: Start isIncluded. First operand 106 states. Second operand has 61 states, 46 states have (on average 1.3478260869565217) internal successors, (62), 57 states have internal predecessors, (62), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:17,483 INFO L87 Difference]: Start difference. First operand 106 states. Second operand has 61 states, 46 states have (on average 1.3478260869565217) internal successors, (62), 57 states have internal predecessors, (62), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:17,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 09:27:17,485 INFO L93 Difference]: Finished difference Result 106 states and 113 transitions. [2022-04-08 09:27:17,485 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 113 transitions. [2022-04-08 09:27:17,485 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 09:27:17,486 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 09:27:17,486 INFO L74 IsIncluded]: Start isIncluded. First operand has 61 states, 46 states have (on average 1.3478260869565217) internal successors, (62), 57 states have internal predecessors, (62), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 106 states. [2022-04-08 09:27:17,486 INFO L87 Difference]: Start difference. First operand has 61 states, 46 states have (on average 1.3478260869565217) internal successors, (62), 57 states have internal predecessors, (62), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 106 states. [2022-04-08 09:27:17,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 09:27:17,488 INFO L93 Difference]: Finished difference Result 106 states and 113 transitions. [2022-04-08 09:27:17,488 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 113 transitions. [2022-04-08 09:27:17,488 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 09:27:17,488 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 09:27:17,488 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 09:27:17,488 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 09:27:17,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 46 states have (on average 1.3478260869565217) internal successors, (62), 57 states have internal predecessors, (62), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:17,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2022-04-08 09:27:17,489 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 16 [2022-04-08 09:27:17,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 09:27:17,489 INFO L478 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2022-04-08 09:27:17,489 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:17,489 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 61 states and 65 transitions. [2022-04-08 09:27:17,534 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 65 edges. 65 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 09:27:17,534 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2022-04-08 09:27:17,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-04-08 09:27:17,534 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 09:27:17,534 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 09:27:17,534 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-04-08 09:27:17,535 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr14ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-04-08 09:27:17,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 09:27:17,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1578753863, now seen corresponding path program 1 times [2022-04-08 09:27:17,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 09:27:17,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [624570823] [2022-04-08 09:27:17,535 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-08 09:27:17,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1578753863, now seen corresponding path program 2 times [2022-04-08 09:27:17,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 09:27:17,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737499154] [2022-04-08 09:27:17,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 09:27:17,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 09:27:17,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 09:27:17,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-08 09:27:17,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 09:27:17,574 INFO L290 TraceCheckUtils]: 0: Hoare triple {3175#(and (= |old(~__return_305~0)| ~__return_305~0) (= |old(~__tmp_259_0~0)| ~__tmp_259_0~0) (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__tmp_383_0~0)| ~__tmp_383_0~0) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(33, 2);call #Ultimate.allocInit(12, 3);~__return_main~0 := 0;~__tmp_259_0~0 := 0;~__return_305~0 := 0;~__tmp_383_0~0 := 0; {3167#true} is VALID [2022-04-08 09:27:17,575 INFO L290 TraceCheckUtils]: 1: Hoare triple {3167#true} assume true; {3167#true} is VALID [2022-04-08 09:27:17,575 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {3167#true} {3167#true} #191#return; {3167#true} is VALID [2022-04-08 09:27:17,575 INFO L272 TraceCheckUtils]: 0: Hoare triple {3167#true} call ULTIMATE.init(); {3175#(and (= |old(~__return_305~0)| ~__return_305~0) (= |old(~__tmp_259_0~0)| ~__tmp_259_0~0) (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__tmp_383_0~0)| ~__tmp_383_0~0) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-08 09:27:17,575 INFO L290 TraceCheckUtils]: 1: Hoare triple {3175#(and (= |old(~__return_305~0)| ~__return_305~0) (= |old(~__tmp_259_0~0)| ~__tmp_259_0~0) (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__tmp_383_0~0)| ~__tmp_383_0~0) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(33, 2);call #Ultimate.allocInit(12, 3);~__return_main~0 := 0;~__tmp_259_0~0 := 0;~__return_305~0 := 0;~__tmp_383_0~0 := 0; {3167#true} is VALID [2022-04-08 09:27:17,576 INFO L290 TraceCheckUtils]: 2: Hoare triple {3167#true} assume true; {3167#true} is VALID [2022-04-08 09:27:17,576 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {3167#true} {3167#true} #191#return; {3167#true} is VALID [2022-04-08 09:27:17,576 INFO L272 TraceCheckUtils]: 4: Hoare triple {3167#true} call #t~ret10 := main(); {3167#true} is VALID [2022-04-08 09:27:17,576 INFO L290 TraceCheckUtils]: 5: Hoare triple {3167#true} havoc ~main__tagbuf_len~0;havoc ~main__t~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~main__tagbuf_len~0 := #t~nondet4;havoc #t~nondet4; {3167#true} is VALID [2022-04-08 09:27:17,576 INFO L290 TraceCheckUtils]: 6: Hoare triple {3167#true} assume ~main__tagbuf_len~0 >= 1;~main__t~0 := 0;~main__tagbuf_len~0 := ~main__tagbuf_len~0 - 1; {3172#(= main_~main__t~0 0)} is VALID [2022-04-08 09:27:17,576 INFO L290 TraceCheckUtils]: 7: Hoare triple {3172#(= main_~main__t~0 0)} assume !(~main__t~0 == ~main__tagbuf_len~0);havoc ~main____CPAchecker_TMP_0~0;assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~main____CPAchecker_TMP_0~0 := #t~nondet5;havoc #t~nondet5; {3172#(= main_~main__t~0 0)} is VALID [2022-04-08 09:27:17,577 INFO L290 TraceCheckUtils]: 8: Hoare triple {3172#(= main_~main__t~0 0)} assume !!(0 == ~main____CPAchecker_TMP_0~0);havoc ~__tmp_13~0;~__tmp_13~0 := (if 0 <= ~main__t~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~12;~__VERIFIER_assert__cond~12 := ~__tmp_13~0; {3172#(= main_~main__t~0 0)} is VALID [2022-04-08 09:27:17,577 INFO L290 TraceCheckUtils]: 9: Hoare triple {3172#(= main_~main__t~0 0)} assume !(0 == ~__VERIFIER_assert__cond~12);havoc ~__tmp_14~0;~__tmp_14~0 := (if ~main__t~0 <= ~main__tagbuf_len~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~13;~__VERIFIER_assert__cond~13 := ~__tmp_14~0; {3172#(= main_~main__t~0 0)} is VALID [2022-04-08 09:27:17,577 INFO L290 TraceCheckUtils]: 10: Hoare triple {3172#(= main_~main__t~0 0)} assume !(0 == ~__VERIFIER_assert__cond~13);~__tmp_383_0~0 := ~main____CPAchecker_TMP_0~0; {3172#(= main_~main__t~0 0)} is VALID [2022-04-08 09:27:17,578 INFO L290 TraceCheckUtils]: 11: Hoare triple {3172#(= main_~main__t~0 0)} ~main____CPAchecker_TMP_0~0 := ~__tmp_383_0~0;~main____CPAchecker_TMP_1~0 := ~main__t~0;~main__t~0 := 1 + ~main__t~0; {3173#(<= 1 main_~main__t~0)} is VALID [2022-04-08 09:27:17,578 INFO L290 TraceCheckUtils]: 12: Hoare triple {3173#(<= 1 main_~main__t~0)} assume !(~main__t~0 == ~main__tagbuf_len~0);havoc ~main____CPAchecker_TMP_0~1;assume -2147483648 <= #t~nondet9 && #t~nondet9 <= 2147483647;~main____CPAchecker_TMP_0~1 := #t~nondet9;havoc #t~nondet9; {3173#(<= 1 main_~main__t~0)} is VALID [2022-04-08 09:27:17,578 INFO L290 TraceCheckUtils]: 13: Hoare triple {3173#(<= 1 main_~main__t~0)} assume !(0 == ~main____CPAchecker_TMP_0~1);havoc ~__tmp_17~0;~__tmp_17~0 := (if 0 <= ~main__t~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~16;~__VERIFIER_assert__cond~16 := ~__tmp_17~0; {3174#(not (= main_~__VERIFIER_assert__cond~16 0))} is VALID [2022-04-08 09:27:17,579 INFO L290 TraceCheckUtils]: 14: Hoare triple {3174#(not (= main_~__VERIFIER_assert__cond~16 0))} assume 0 == ~__VERIFIER_assert__cond~16; {3168#false} is VALID [2022-04-08 09:27:17,579 INFO L290 TraceCheckUtils]: 15: Hoare triple {3168#false} assume !false; {3168#false} is VALID [2022-04-08 09:27:17,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-08 09:27:17,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 09:27:17,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737499154] [2022-04-08 09:27:17,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737499154] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 09:27:17,579 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 09:27:17,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-08 09:27:17,579 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 09:27:17,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [624570823] [2022-04-08 09:27:17,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [624570823] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 09:27:17,580 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 09:27:17,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-08 09:27:17,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456776026] [2022-04-08 09:27:17,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 09:27:17,580 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-04-08 09:27:17,580 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 09:27:17,580 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:17,589 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 16 edges. 16 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 09:27:17,589 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-08 09:27:17,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 09:27:17,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-08 09:27:17,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-04-08 09:27:17,590 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:17,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 09:27:17,949 INFO L93 Difference]: Finished difference Result 93 states and 99 transitions. [2022-04-08 09:27:17,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-08 09:27:17,950 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-04-08 09:27:17,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 09:27:17,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:17,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 99 transitions. [2022-04-08 09:27:17,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:17,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 99 transitions. [2022-04-08 09:27:17,952 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 7 states and 99 transitions. [2022-04-08 09:27:18,012 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 99 edges. 99 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 09:27:18,013 INFO L225 Difference]: With dead ends: 93 [2022-04-08 09:27:18,013 INFO L226 Difference]: Without dead ends: 91 [2022-04-08 09:27:18,013 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-04-08 09:27:18,014 INFO L913 BasicCegarLoop]: 57 mSDtfsCounter, 88 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-08 09:27:18,014 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 147 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-08 09:27:18,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-04-08 09:27:18,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 59. [2022-04-08 09:27:18,049 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 09:27:18,049 INFO L82 GeneralOperation]: Start isEquivalent. First operand 91 states. Second operand has 59 states, 45 states have (on average 1.3333333333333333) internal successors, (60), 55 states have internal predecessors, (60), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:18,049 INFO L74 IsIncluded]: Start isIncluded. First operand 91 states. Second operand has 59 states, 45 states have (on average 1.3333333333333333) internal successors, (60), 55 states have internal predecessors, (60), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:18,049 INFO L87 Difference]: Start difference. First operand 91 states. Second operand has 59 states, 45 states have (on average 1.3333333333333333) internal successors, (60), 55 states have internal predecessors, (60), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:18,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 09:27:18,051 INFO L93 Difference]: Finished difference Result 91 states and 97 transitions. [2022-04-08 09:27:18,051 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 97 transitions. [2022-04-08 09:27:18,051 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 09:27:18,051 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 09:27:18,051 INFO L74 IsIncluded]: Start isIncluded. First operand has 59 states, 45 states have (on average 1.3333333333333333) internal successors, (60), 55 states have internal predecessors, (60), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 91 states. [2022-04-08 09:27:18,051 INFO L87 Difference]: Start difference. First operand has 59 states, 45 states have (on average 1.3333333333333333) internal successors, (60), 55 states have internal predecessors, (60), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 91 states. [2022-04-08 09:27:18,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 09:27:18,053 INFO L93 Difference]: Finished difference Result 91 states and 97 transitions. [2022-04-08 09:27:18,053 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 97 transitions. [2022-04-08 09:27:18,053 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 09:27:18,053 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 09:27:18,053 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 09:27:18,053 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 09:27:18,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 45 states have (on average 1.3333333333333333) internal successors, (60), 55 states have internal predecessors, (60), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:18,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2022-04-08 09:27:18,054 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 16 [2022-04-08 09:27:18,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 09:27:18,054 INFO L478 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2022-04-08 09:27:18,054 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:18,055 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 59 states and 63 transitions. [2022-04-08 09:27:18,110 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 63 edges. 63 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 09:27:18,110 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2022-04-08 09:27:18,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-04-08 09:27:18,110 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 09:27:18,110 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 09:27:18,111 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-04-08 09:27:18,111 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr13ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-04-08 09:27:18,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 09:27:18,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1579181860, now seen corresponding path program 1 times [2022-04-08 09:27:18,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 09:27:18,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [669696022] [2022-04-08 09:27:18,111 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-08 09:27:18,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1579181860, now seen corresponding path program 2 times [2022-04-08 09:27:18,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 09:27:18,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150377118] [2022-04-08 09:27:18,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 09:27:18,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 09:27:18,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 09:27:18,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-08 09:27:18,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 09:27:18,147 INFO L290 TraceCheckUtils]: 0: Hoare triple {3675#(and (= |old(~__return_305~0)| ~__return_305~0) (= |old(~__tmp_259_0~0)| ~__tmp_259_0~0) (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__tmp_383_0~0)| ~__tmp_383_0~0) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(33, 2);call #Ultimate.allocInit(12, 3);~__return_main~0 := 0;~__tmp_259_0~0 := 0;~__return_305~0 := 0;~__tmp_383_0~0 := 0; {3668#true} is VALID [2022-04-08 09:27:18,147 INFO L290 TraceCheckUtils]: 1: Hoare triple {3668#true} assume true; {3668#true} is VALID [2022-04-08 09:27:18,148 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {3668#true} {3668#true} #191#return; {3668#true} is VALID [2022-04-08 09:27:18,151 INFO L272 TraceCheckUtils]: 0: Hoare triple {3668#true} call ULTIMATE.init(); {3675#(and (= |old(~__return_305~0)| ~__return_305~0) (= |old(~__tmp_259_0~0)| ~__tmp_259_0~0) (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__tmp_383_0~0)| ~__tmp_383_0~0) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-08 09:27:18,151 INFO L290 TraceCheckUtils]: 1: Hoare triple {3675#(and (= |old(~__return_305~0)| ~__return_305~0) (= |old(~__tmp_259_0~0)| ~__tmp_259_0~0) (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__tmp_383_0~0)| ~__tmp_383_0~0) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(33, 2);call #Ultimate.allocInit(12, 3);~__return_main~0 := 0;~__tmp_259_0~0 := 0;~__return_305~0 := 0;~__tmp_383_0~0 := 0; {3668#true} is VALID [2022-04-08 09:27:18,151 INFO L290 TraceCheckUtils]: 2: Hoare triple {3668#true} assume true; {3668#true} is VALID [2022-04-08 09:27:18,151 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {3668#true} {3668#true} #191#return; {3668#true} is VALID [2022-04-08 09:27:18,151 INFO L272 TraceCheckUtils]: 4: Hoare triple {3668#true} call #t~ret10 := main(); {3668#true} is VALID [2022-04-08 09:27:18,151 INFO L290 TraceCheckUtils]: 5: Hoare triple {3668#true} havoc ~main__tagbuf_len~0;havoc ~main__t~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~main__tagbuf_len~0 := #t~nondet4;havoc #t~nondet4; {3668#true} is VALID [2022-04-08 09:27:18,151 INFO L290 TraceCheckUtils]: 6: Hoare triple {3668#true} assume ~main__tagbuf_len~0 >= 1;~main__t~0 := 0;~main__tagbuf_len~0 := ~main__tagbuf_len~0 - 1; {3668#true} is VALID [2022-04-08 09:27:18,152 INFO L290 TraceCheckUtils]: 7: Hoare triple {3668#true} assume !(~main__t~0 == ~main__tagbuf_len~0);havoc ~main____CPAchecker_TMP_0~0;assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~main____CPAchecker_TMP_0~0 := #t~nondet5;havoc #t~nondet5; {3668#true} is VALID [2022-04-08 09:27:18,152 INFO L290 TraceCheckUtils]: 8: Hoare triple {3668#true} assume !!(0 == ~main____CPAchecker_TMP_0~0);havoc ~__tmp_13~0;~__tmp_13~0 := (if 0 <= ~main__t~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~12;~__VERIFIER_assert__cond~12 := ~__tmp_13~0; {3668#true} is VALID [2022-04-08 09:27:18,152 INFO L290 TraceCheckUtils]: 9: Hoare triple {3668#true} assume !(0 == ~__VERIFIER_assert__cond~12);havoc ~__tmp_14~0;~__tmp_14~0 := (if ~main__t~0 <= ~main__tagbuf_len~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~13;~__VERIFIER_assert__cond~13 := ~__tmp_14~0; {3668#true} is VALID [2022-04-08 09:27:18,152 INFO L290 TraceCheckUtils]: 10: Hoare triple {3668#true} assume !(0 == ~__VERIFIER_assert__cond~13);~__tmp_383_0~0 := ~main____CPAchecker_TMP_0~0; {3668#true} is VALID [2022-04-08 09:27:18,152 INFO L290 TraceCheckUtils]: 11: Hoare triple {3668#true} ~main____CPAchecker_TMP_0~0 := ~__tmp_383_0~0;~main____CPAchecker_TMP_1~0 := ~main__t~0;~main__t~0 := 1 + ~main__t~0; {3668#true} is VALID [2022-04-08 09:27:18,157 INFO L290 TraceCheckUtils]: 12: Hoare triple {3668#true} assume ~main__t~0 == ~main__tagbuf_len~0;havoc ~__tmp_15~0;~__tmp_15~0 := (if 0 <= ~main__t~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~14;~__VERIFIER_assert__cond~14 := ~__tmp_15~0; {3673#(<= main_~main__t~0 main_~main__tagbuf_len~0)} is VALID [2022-04-08 09:27:18,158 INFO L290 TraceCheckUtils]: 13: Hoare triple {3673#(<= main_~main__t~0 main_~main__tagbuf_len~0)} assume !(0 == ~__VERIFIER_assert__cond~14);havoc ~__tmp_16~0;~__tmp_16~0 := (if ~main__t~0 <= ~main__tagbuf_len~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~15;~__VERIFIER_assert__cond~15 := ~__tmp_16~0; {3674#(not (= main_~__VERIFIER_assert__cond~15 0))} is VALID [2022-04-08 09:27:18,158 INFO L290 TraceCheckUtils]: 14: Hoare triple {3674#(not (= main_~__VERIFIER_assert__cond~15 0))} assume 0 == ~__VERIFIER_assert__cond~15; {3669#false} is VALID [2022-04-08 09:27:18,158 INFO L290 TraceCheckUtils]: 15: Hoare triple {3669#false} assume !false; {3669#false} is VALID [2022-04-08 09:27:18,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-08 09:27:18,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 09:27:18,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150377118] [2022-04-08 09:27:18,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150377118] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 09:27:18,159 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 09:27:18,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-08 09:27:18,159 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 09:27:18,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [669696022] [2022-04-08 09:27:18,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [669696022] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 09:27:18,159 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 09:27:18,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-08 09:27:18,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536126846] [2022-04-08 09:27:18,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 09:27:18,160 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-04-08 09:27:18,160 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 09:27:18,160 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:18,168 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 16 edges. 16 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 09:27:18,168 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-08 09:27:18,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 09:27:18,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-08 09:27:18,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-08 09:27:18,169 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:18,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 09:27:18,346 INFO L93 Difference]: Finished difference Result 61 states and 65 transitions. [2022-04-08 09:27:18,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-08 09:27:18,347 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-04-08 09:27:18,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 09:27:18,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:18,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 65 transitions. [2022-04-08 09:27:18,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:18,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 65 transitions. [2022-04-08 09:27:18,349 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 6 states and 65 transitions. [2022-04-08 09:27:18,394 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 65 edges. 65 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 09:27:18,395 INFO L225 Difference]: With dead ends: 61 [2022-04-08 09:27:18,395 INFO L226 Difference]: Without dead ends: 57 [2022-04-08 09:27:18,395 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-04-08 09:27:18,396 INFO L913 BasicCegarLoop]: 52 mSDtfsCounter, 20 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-08 09:27:18,396 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 129 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-08 09:27:18,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-04-08 09:27:18,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 55. [2022-04-08 09:27:18,431 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 09:27:18,431 INFO L82 GeneralOperation]: Start isEquivalent. First operand 57 states. Second operand has 55 states, 42 states have (on average 1.3333333333333333) internal successors, (56), 51 states have internal predecessors, (56), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:18,431 INFO L74 IsIncluded]: Start isIncluded. First operand 57 states. Second operand has 55 states, 42 states have (on average 1.3333333333333333) internal successors, (56), 51 states have internal predecessors, (56), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:18,431 INFO L87 Difference]: Start difference. First operand 57 states. Second operand has 55 states, 42 states have (on average 1.3333333333333333) internal successors, (56), 51 states have internal predecessors, (56), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:18,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 09:27:18,432 INFO L93 Difference]: Finished difference Result 57 states and 61 transitions. [2022-04-08 09:27:18,433 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2022-04-08 09:27:18,433 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 09:27:18,433 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 09:27:18,433 INFO L74 IsIncluded]: Start isIncluded. First operand has 55 states, 42 states have (on average 1.3333333333333333) internal successors, (56), 51 states have internal predecessors, (56), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 57 states. [2022-04-08 09:27:18,433 INFO L87 Difference]: Start difference. First operand has 55 states, 42 states have (on average 1.3333333333333333) internal successors, (56), 51 states have internal predecessors, (56), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 57 states. [2022-04-08 09:27:18,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 09:27:18,434 INFO L93 Difference]: Finished difference Result 57 states and 61 transitions. [2022-04-08 09:27:18,434 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2022-04-08 09:27:18,434 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 09:27:18,434 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 09:27:18,434 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 09:27:18,434 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 09:27:18,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 42 states have (on average 1.3333333333333333) internal successors, (56), 51 states have internal predecessors, (56), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:18,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2022-04-08 09:27:18,435 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 16 [2022-04-08 09:27:18,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 09:27:18,435 INFO L478 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2022-04-08 09:27:18,435 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:18,436 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 55 states and 59 transitions. [2022-04-08 09:27:18,484 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 59 edges. 59 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 09:27:18,484 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2022-04-08 09:27:18,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-04-08 09:27:18,484 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 09:27:18,484 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 09:27:18,484 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-04-08 09:27:18,485 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-04-08 09:27:18,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 09:27:18,485 INFO L85 PathProgramCache]: Analyzing trace with hash 697862626, now seen corresponding path program 1 times [2022-04-08 09:27:18,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 09:27:18,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2130899770] [2022-04-08 09:27:18,485 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-08 09:27:18,485 INFO L85 PathProgramCache]: Analyzing trace with hash 697862626, now seen corresponding path program 2 times [2022-04-08 09:27:18,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 09:27:18,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442807860] [2022-04-08 09:27:18,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 09:27:18,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 09:27:18,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 09:27:18,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-08 09:27:18,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 09:27:18,530 INFO L290 TraceCheckUtils]: 0: Hoare triple {4037#(and (= |old(~__return_305~0)| ~__return_305~0) (= |old(~__tmp_259_0~0)| ~__tmp_259_0~0) (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__tmp_383_0~0)| ~__tmp_383_0~0) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(33, 2);call #Ultimate.allocInit(12, 3);~__return_main~0 := 0;~__tmp_259_0~0 := 0;~__return_305~0 := 0;~__tmp_383_0~0 := 0; {4029#true} is VALID [2022-04-08 09:27:18,531 INFO L290 TraceCheckUtils]: 1: Hoare triple {4029#true} assume true; {4029#true} is VALID [2022-04-08 09:27:18,531 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {4029#true} {4029#true} #191#return; {4029#true} is VALID [2022-04-08 09:27:18,531 INFO L272 TraceCheckUtils]: 0: Hoare triple {4029#true} call ULTIMATE.init(); {4037#(and (= |old(~__return_305~0)| ~__return_305~0) (= |old(~__tmp_259_0~0)| ~__tmp_259_0~0) (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__tmp_383_0~0)| ~__tmp_383_0~0) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-08 09:27:18,531 INFO L290 TraceCheckUtils]: 1: Hoare triple {4037#(and (= |old(~__return_305~0)| ~__return_305~0) (= |old(~__tmp_259_0~0)| ~__tmp_259_0~0) (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__tmp_383_0~0)| ~__tmp_383_0~0) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(33, 2);call #Ultimate.allocInit(12, 3);~__return_main~0 := 0;~__tmp_259_0~0 := 0;~__return_305~0 := 0;~__tmp_383_0~0 := 0; {4029#true} is VALID [2022-04-08 09:27:18,531 INFO L290 TraceCheckUtils]: 2: Hoare triple {4029#true} assume true; {4029#true} is VALID [2022-04-08 09:27:18,531 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {4029#true} {4029#true} #191#return; {4029#true} is VALID [2022-04-08 09:27:18,532 INFO L272 TraceCheckUtils]: 4: Hoare triple {4029#true} call #t~ret10 := main(); {4029#true} is VALID [2022-04-08 09:27:18,532 INFO L290 TraceCheckUtils]: 5: Hoare triple {4029#true} havoc ~main__tagbuf_len~0;havoc ~main__t~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~main__tagbuf_len~0 := #t~nondet4;havoc #t~nondet4; {4029#true} is VALID [2022-04-08 09:27:18,532 INFO L290 TraceCheckUtils]: 6: Hoare triple {4029#true} assume ~main__tagbuf_len~0 >= 1;~main__t~0 := 0;~main__tagbuf_len~0 := ~main__tagbuf_len~0 - 1; {4034#(= main_~main__t~0 0)} is VALID [2022-04-08 09:27:18,532 INFO L290 TraceCheckUtils]: 7: Hoare triple {4034#(= main_~main__t~0 0)} assume !(~main__t~0 == ~main__tagbuf_len~0);havoc ~main____CPAchecker_TMP_0~0;assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~main____CPAchecker_TMP_0~0 := #t~nondet5;havoc #t~nondet5; {4034#(= main_~main__t~0 0)} is VALID [2022-04-08 09:27:18,532 INFO L290 TraceCheckUtils]: 8: Hoare triple {4034#(= main_~main__t~0 0)} assume !(0 == ~main____CPAchecker_TMP_0~0);havoc ~__tmp_1~0;~__tmp_1~0 := (if 0 <= ~main__t~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~0;~__VERIFIER_assert__cond~0 := ~__tmp_1~0; {4034#(= main_~main__t~0 0)} is VALID [2022-04-08 09:27:18,533 INFO L290 TraceCheckUtils]: 9: Hoare triple {4034#(= main_~main__t~0 0)} assume !(0 == ~__VERIFIER_assert__cond~0);havoc ~__tmp_2~0;~__tmp_2~0 := (if ~main__t~0 <= ~main__tagbuf_len~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~1;~__VERIFIER_assert__cond~1 := ~__tmp_2~0; {4034#(= main_~main__t~0 0)} is VALID [2022-04-08 09:27:18,533 INFO L290 TraceCheckUtils]: 10: Hoare triple {4034#(= main_~main__t~0 0)} assume !(0 == ~__VERIFIER_assert__cond~1);~__tmp_259_0~0 := ~main____CPAchecker_TMP_0~0; {4034#(= main_~main__t~0 0)} is VALID [2022-04-08 09:27:18,533 INFO L290 TraceCheckUtils]: 11: Hoare triple {4034#(= main_~main__t~0 0)} ~main____CPAchecker_TMP_0~0 := ~__tmp_259_0~0;~main____CPAchecker_TMP_2~0 := ~main__t~0;~main__t~0 := 1 + ~main__t~0; {4035#(<= 1 main_~main__t~0)} is VALID [2022-04-08 09:27:18,534 INFO L290 TraceCheckUtils]: 12: Hoare triple {4035#(<= 1 main_~main__t~0)} assume !(~main__t~0 == ~main__tagbuf_len~0);havoc ~main____CPAchecker_TMP_3~0;assume -2147483648 <= #t~nondet6 && #t~nondet6 <= 2147483647;~main____CPAchecker_TMP_3~0 := #t~nondet6;havoc #t~nondet6; {4035#(<= 1 main_~main__t~0)} is VALID [2022-04-08 09:27:18,534 INFO L290 TraceCheckUtils]: 13: Hoare triple {4035#(<= 1 main_~main__t~0)} assume !(0 == ~main____CPAchecker_TMP_3~0);havoc ~main____CPAchecker_TMP_4~0;assume -2147483648 <= #t~nondet7 && #t~nondet7 <= 2147483647;~main____CPAchecker_TMP_4~0 := #t~nondet7;havoc #t~nondet7; {4035#(<= 1 main_~main__t~0)} is VALID [2022-04-08 09:27:18,539 INFO L290 TraceCheckUtils]: 14: Hoare triple {4035#(<= 1 main_~main__t~0)} assume !(0 == ~main____CPAchecker_TMP_4~0);havoc ~__tmp_5~0;~__tmp_5~0 := (if 0 <= ~main__t~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~4;~__VERIFIER_assert__cond~4 := ~__tmp_5~0; {4036#(not (= main_~__VERIFIER_assert__cond~4 0))} is VALID [2022-04-08 09:27:18,539 INFO L290 TraceCheckUtils]: 15: Hoare triple {4036#(not (= main_~__VERIFIER_assert__cond~4 0))} assume 0 == ~__VERIFIER_assert__cond~4; {4030#false} is VALID [2022-04-08 09:27:18,539 INFO L290 TraceCheckUtils]: 16: Hoare triple {4030#false} assume !false; {4030#false} is VALID [2022-04-08 09:27:18,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-08 09:27:18,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 09:27:18,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442807860] [2022-04-08 09:27:18,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442807860] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 09:27:18,539 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 09:27:18,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-08 09:27:18,540 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 09:27:18,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2130899770] [2022-04-08 09:27:18,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2130899770] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 09:27:18,540 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 09:27:18,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-08 09:27:18,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474610864] [2022-04-08 09:27:18,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 09:27:18,541 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-04-08 09:27:18,541 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 09:27:18,541 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:18,551 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 17 edges. 17 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 09:27:18,551 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-08 09:27:18,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 09:27:18,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-08 09:27:18,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-04-08 09:27:18,552 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:18,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 09:27:18,826 INFO L93 Difference]: Finished difference Result 74 states and 80 transitions. [2022-04-08 09:27:18,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-08 09:27:18,826 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-04-08 09:27:18,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 09:27:18,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:18,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 80 transitions. [2022-04-08 09:27:18,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:18,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 80 transitions. [2022-04-08 09:27:18,828 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 7 states and 80 transitions. [2022-04-08 09:27:18,892 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 80 edges. 80 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 09:27:18,893 INFO L225 Difference]: With dead ends: 74 [2022-04-08 09:27:18,893 INFO L226 Difference]: Without dead ends: 72 [2022-04-08 09:27:18,893 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-04-08 09:27:18,894 INFO L913 BasicCegarLoop]: 45 mSDtfsCounter, 74 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-08 09:27:18,894 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 116 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-08 09:27:18,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-04-08 09:27:18,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 53. [2022-04-08 09:27:18,926 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 09:27:18,926 INFO L82 GeneralOperation]: Start isEquivalent. First operand 72 states. Second operand has 53 states, 41 states have (on average 1.3170731707317074) internal successors, (54), 49 states have internal predecessors, (54), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:18,926 INFO L74 IsIncluded]: Start isIncluded. First operand 72 states. Second operand has 53 states, 41 states have (on average 1.3170731707317074) internal successors, (54), 49 states have internal predecessors, (54), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:18,926 INFO L87 Difference]: Start difference. First operand 72 states. Second operand has 53 states, 41 states have (on average 1.3170731707317074) internal successors, (54), 49 states have internal predecessors, (54), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:18,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 09:27:18,928 INFO L93 Difference]: Finished difference Result 72 states and 78 transitions. [2022-04-08 09:27:18,928 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 78 transitions. [2022-04-08 09:27:18,928 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 09:27:18,928 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 09:27:18,928 INFO L74 IsIncluded]: Start isIncluded. First operand has 53 states, 41 states have (on average 1.3170731707317074) internal successors, (54), 49 states have internal predecessors, (54), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 72 states. [2022-04-08 09:27:18,928 INFO L87 Difference]: Start difference. First operand has 53 states, 41 states have (on average 1.3170731707317074) internal successors, (54), 49 states have internal predecessors, (54), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 72 states. [2022-04-08 09:27:18,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 09:27:18,929 INFO L93 Difference]: Finished difference Result 72 states and 78 transitions. [2022-04-08 09:27:18,929 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 78 transitions. [2022-04-08 09:27:18,929 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 09:27:18,929 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 09:27:18,929 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 09:27:18,929 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 09:27:18,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 41 states have (on average 1.3170731707317074) internal successors, (54), 49 states have internal predecessors, (54), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:18,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2022-04-08 09:27:18,930 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 17 [2022-04-08 09:27:18,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 09:27:18,930 INFO L478 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2022-04-08 09:27:18,930 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:18,930 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 53 states and 57 transitions. [2022-04-08 09:27:18,977 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 57 edges. 57 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 09:27:18,977 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2022-04-08 09:27:18,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-04-08 09:27:18,977 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 09:27:18,977 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 09:27:18,977 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-04-08 09:27:18,977 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr9ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-04-08 09:27:18,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 09:27:18,978 INFO L85 PathProgramCache]: Analyzing trace with hash 699401826, now seen corresponding path program 1 times [2022-04-08 09:27:18,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 09:27:18,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1713678029] [2022-04-08 09:27:18,978 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-08 09:27:18,978 INFO L85 PathProgramCache]: Analyzing trace with hash 699401826, now seen corresponding path program 2 times [2022-04-08 09:27:18,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 09:27:18,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033334066] [2022-04-08 09:27:18,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 09:27:18,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 09:27:18,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 09:27:19,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-08 09:27:19,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 09:27:19,022 INFO L290 TraceCheckUtils]: 0: Hoare triple {4450#(and (= |old(~__return_305~0)| ~__return_305~0) (= |old(~__tmp_259_0~0)| ~__tmp_259_0~0) (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__tmp_383_0~0)| ~__tmp_383_0~0) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(33, 2);call #Ultimate.allocInit(12, 3);~__return_main~0 := 0;~__tmp_259_0~0 := 0;~__return_305~0 := 0;~__tmp_383_0~0 := 0; {4442#true} is VALID [2022-04-08 09:27:19,022 INFO L290 TraceCheckUtils]: 1: Hoare triple {4442#true} assume true; {4442#true} is VALID [2022-04-08 09:27:19,022 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {4442#true} {4442#true} #191#return; {4442#true} is VALID [2022-04-08 09:27:19,023 INFO L272 TraceCheckUtils]: 0: Hoare triple {4442#true} call ULTIMATE.init(); {4450#(and (= |old(~__return_305~0)| ~__return_305~0) (= |old(~__tmp_259_0~0)| ~__tmp_259_0~0) (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__tmp_383_0~0)| ~__tmp_383_0~0) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-08 09:27:19,023 INFO L290 TraceCheckUtils]: 1: Hoare triple {4450#(and (= |old(~__return_305~0)| ~__return_305~0) (= |old(~__tmp_259_0~0)| ~__tmp_259_0~0) (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__tmp_383_0~0)| ~__tmp_383_0~0) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(33, 2);call #Ultimate.allocInit(12, 3);~__return_main~0 := 0;~__tmp_259_0~0 := 0;~__return_305~0 := 0;~__tmp_383_0~0 := 0; {4442#true} is VALID [2022-04-08 09:27:19,023 INFO L290 TraceCheckUtils]: 2: Hoare triple {4442#true} assume true; {4442#true} is VALID [2022-04-08 09:27:19,023 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {4442#true} {4442#true} #191#return; {4442#true} is VALID [2022-04-08 09:27:19,023 INFO L272 TraceCheckUtils]: 4: Hoare triple {4442#true} call #t~ret10 := main(); {4442#true} is VALID [2022-04-08 09:27:19,023 INFO L290 TraceCheckUtils]: 5: Hoare triple {4442#true} havoc ~main__tagbuf_len~0;havoc ~main__t~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~main__tagbuf_len~0 := #t~nondet4;havoc #t~nondet4; {4442#true} is VALID [2022-04-08 09:27:19,023 INFO L290 TraceCheckUtils]: 6: Hoare triple {4442#true} assume ~main__tagbuf_len~0 >= 1;~main__t~0 := 0;~main__tagbuf_len~0 := ~main__tagbuf_len~0 - 1; {4447#(= main_~main__t~0 0)} is VALID [2022-04-08 09:27:19,024 INFO L290 TraceCheckUtils]: 7: Hoare triple {4447#(= main_~main__t~0 0)} assume !(~main__t~0 == ~main__tagbuf_len~0);havoc ~main____CPAchecker_TMP_0~0;assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~main____CPAchecker_TMP_0~0 := #t~nondet5;havoc #t~nondet5; {4447#(= main_~main__t~0 0)} is VALID [2022-04-08 09:27:19,024 INFO L290 TraceCheckUtils]: 8: Hoare triple {4447#(= main_~main__t~0 0)} assume !(0 == ~main____CPAchecker_TMP_0~0);havoc ~__tmp_1~0;~__tmp_1~0 := (if 0 <= ~main__t~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~0;~__VERIFIER_assert__cond~0 := ~__tmp_1~0; {4447#(= main_~main__t~0 0)} is VALID [2022-04-08 09:27:19,024 INFO L290 TraceCheckUtils]: 9: Hoare triple {4447#(= main_~main__t~0 0)} assume !(0 == ~__VERIFIER_assert__cond~0);havoc ~__tmp_2~0;~__tmp_2~0 := (if ~main__t~0 <= ~main__tagbuf_len~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~1;~__VERIFIER_assert__cond~1 := ~__tmp_2~0; {4447#(= main_~main__t~0 0)} is VALID [2022-04-08 09:27:19,024 INFO L290 TraceCheckUtils]: 10: Hoare triple {4447#(= main_~main__t~0 0)} assume !(0 == ~__VERIFIER_assert__cond~1);~__tmp_259_0~0 := ~main____CPAchecker_TMP_0~0; {4447#(= main_~main__t~0 0)} is VALID [2022-04-08 09:27:19,025 INFO L290 TraceCheckUtils]: 11: Hoare triple {4447#(= main_~main__t~0 0)} ~main____CPAchecker_TMP_0~0 := ~__tmp_259_0~0;~main____CPAchecker_TMP_2~0 := ~main__t~0;~main__t~0 := 1 + ~main__t~0; {4448#(<= 1 main_~main__t~0)} is VALID [2022-04-08 09:27:19,026 INFO L290 TraceCheckUtils]: 12: Hoare triple {4448#(<= 1 main_~main__t~0)} assume !(~main__t~0 == ~main__tagbuf_len~0);havoc ~main____CPAchecker_TMP_3~0;assume -2147483648 <= #t~nondet6 && #t~nondet6 <= 2147483647;~main____CPAchecker_TMP_3~0 := #t~nondet6;havoc #t~nondet6; {4448#(<= 1 main_~main__t~0)} is VALID [2022-04-08 09:27:19,026 INFO L290 TraceCheckUtils]: 13: Hoare triple {4448#(<= 1 main_~main__t~0)} assume !!(0 == ~main____CPAchecker_TMP_3~0);havoc ~main____CPAchecker_TMP_6~0;assume -2147483648 <= #t~nondet8 && #t~nondet8 <= 2147483647;~main____CPAchecker_TMP_6~0 := #t~nondet8;havoc #t~nondet8; {4448#(<= 1 main_~main__t~0)} is VALID [2022-04-08 09:27:19,026 INFO L290 TraceCheckUtils]: 14: Hoare triple {4448#(<= 1 main_~main__t~0)} assume !(0 == ~main____CPAchecker_TMP_6~0);havoc ~__tmp_11~0;~__tmp_11~0 := (if 0 <= ~main__t~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~10;~__VERIFIER_assert__cond~10 := ~__tmp_11~0; {4449#(not (= main_~__VERIFIER_assert__cond~10 0))} is VALID [2022-04-08 09:27:19,026 INFO L290 TraceCheckUtils]: 15: Hoare triple {4449#(not (= main_~__VERIFIER_assert__cond~10 0))} assume 0 == ~__VERIFIER_assert__cond~10; {4443#false} is VALID [2022-04-08 09:27:19,027 INFO L290 TraceCheckUtils]: 16: Hoare triple {4443#false} assume !false; {4443#false} is VALID [2022-04-08 09:27:19,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-08 09:27:19,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 09:27:19,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033334066] [2022-04-08 09:27:19,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033334066] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 09:27:19,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 09:27:19,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-08 09:27:19,027 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 09:27:19,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1713678029] [2022-04-08 09:27:19,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1713678029] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 09:27:19,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 09:27:19,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-08 09:27:19,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337458241] [2022-04-08 09:27:19,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 09:27:19,028 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-04-08 09:27:19,028 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 09:27:19,028 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:19,037 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 17 edges. 17 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 09:27:19,037 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-08 09:27:19,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 09:27:19,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-08 09:27:19,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-04-08 09:27:19,037 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:19,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 09:27:19,275 INFO L93 Difference]: Finished difference Result 55 states and 59 transitions. [2022-04-08 09:27:19,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-08 09:27:19,276 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-04-08 09:27:19,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 09:27:19,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:19,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 59 transitions. [2022-04-08 09:27:19,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:19,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 59 transitions. [2022-04-08 09:27:19,278 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 7 states and 59 transitions. [2022-04-08 09:27:19,313 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 59 edges. 59 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 09:27:19,314 INFO L225 Difference]: With dead ends: 55 [2022-04-08 09:27:19,314 INFO L226 Difference]: Without dead ends: 53 [2022-04-08 09:27:19,314 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-04-08 09:27:19,315 INFO L913 BasicCegarLoop]: 31 mSDtfsCounter, 48 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-08 09:27:19,315 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 90 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-08 09:27:19,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-04-08 09:27:19,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 51. [2022-04-08 09:27:19,350 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 09:27:19,350 INFO L82 GeneralOperation]: Start isEquivalent. First operand 53 states. Second operand has 51 states, 40 states have (on average 1.3) internal successors, (52), 47 states have internal predecessors, (52), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:19,350 INFO L74 IsIncluded]: Start isIncluded. First operand 53 states. Second operand has 51 states, 40 states have (on average 1.3) internal successors, (52), 47 states have internal predecessors, (52), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:19,350 INFO L87 Difference]: Start difference. First operand 53 states. Second operand has 51 states, 40 states have (on average 1.3) internal successors, (52), 47 states have internal predecessors, (52), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:19,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 09:27:19,351 INFO L93 Difference]: Finished difference Result 53 states and 57 transitions. [2022-04-08 09:27:19,351 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2022-04-08 09:27:19,351 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 09:27:19,352 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 09:27:19,352 INFO L74 IsIncluded]: Start isIncluded. First operand has 51 states, 40 states have (on average 1.3) internal successors, (52), 47 states have internal predecessors, (52), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 53 states. [2022-04-08 09:27:19,352 INFO L87 Difference]: Start difference. First operand has 51 states, 40 states have (on average 1.3) internal successors, (52), 47 states have internal predecessors, (52), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 53 states. [2022-04-08 09:27:19,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 09:27:19,353 INFO L93 Difference]: Finished difference Result 53 states and 57 transitions. [2022-04-08 09:27:19,353 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2022-04-08 09:27:19,353 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 09:27:19,353 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 09:27:19,353 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 09:27:19,353 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 09:27:19,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 40 states have (on average 1.3) internal successors, (52), 47 states have internal predecessors, (52), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:19,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2022-04-08 09:27:19,354 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 17 [2022-04-08 09:27:19,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 09:27:19,354 INFO L478 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2022-04-08 09:27:19,354 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:19,354 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 51 states and 55 transitions. [2022-04-08 09:27:19,416 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 55 edges. 55 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 09:27:19,417 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2022-04-08 09:27:19,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-04-08 09:27:19,417 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 09:27:19,417 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 09:27:19,417 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-04-08 09:27:19,418 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr17ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-04-08 09:27:19,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 09:27:19,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1696295318, now seen corresponding path program 1 times [2022-04-08 09:27:19,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 09:27:19,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1614817937] [2022-04-08 09:27:19,419 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-08 09:27:19,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1696295318, now seen corresponding path program 2 times [2022-04-08 09:27:19,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 09:27:19,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207975752] [2022-04-08 09:27:19,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 09:27:19,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 09:27:19,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 09:27:19,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-08 09:27:19,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 09:27:19,561 INFO L290 TraceCheckUtils]: 0: Hoare triple {4784#(and (= |old(~__return_305~0)| ~__return_305~0) (= |old(~__tmp_259_0~0)| ~__tmp_259_0~0) (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__tmp_383_0~0)| ~__tmp_383_0~0) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(33, 2);call #Ultimate.allocInit(12, 3);~__return_main~0 := 0;~__tmp_259_0~0 := 0;~__return_305~0 := 0;~__tmp_383_0~0 := 0; {4775#true} is VALID [2022-04-08 09:27:19,561 INFO L290 TraceCheckUtils]: 1: Hoare triple {4775#true} assume true; {4775#true} is VALID [2022-04-08 09:27:19,561 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {4775#true} {4775#true} #191#return; {4775#true} is VALID [2022-04-08 09:27:19,572 INFO L272 TraceCheckUtils]: 0: Hoare triple {4775#true} call ULTIMATE.init(); {4784#(and (= |old(~__return_305~0)| ~__return_305~0) (= |old(~__tmp_259_0~0)| ~__tmp_259_0~0) (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__tmp_383_0~0)| ~__tmp_383_0~0) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-08 09:27:19,572 INFO L290 TraceCheckUtils]: 1: Hoare triple {4784#(and (= |old(~__return_305~0)| ~__return_305~0) (= |old(~__tmp_259_0~0)| ~__tmp_259_0~0) (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__tmp_383_0~0)| ~__tmp_383_0~0) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(33, 2);call #Ultimate.allocInit(12, 3);~__return_main~0 := 0;~__tmp_259_0~0 := 0;~__return_305~0 := 0;~__tmp_383_0~0 := 0; {4775#true} is VALID [2022-04-08 09:27:19,572 INFO L290 TraceCheckUtils]: 2: Hoare triple {4775#true} assume true; {4775#true} is VALID [2022-04-08 09:27:19,572 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {4775#true} {4775#true} #191#return; {4775#true} is VALID [2022-04-08 09:27:19,572 INFO L272 TraceCheckUtils]: 4: Hoare triple {4775#true} call #t~ret10 := main(); {4775#true} is VALID [2022-04-08 09:27:19,572 INFO L290 TraceCheckUtils]: 5: Hoare triple {4775#true} havoc ~main__tagbuf_len~0;havoc ~main__t~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~main__tagbuf_len~0 := #t~nondet4;havoc #t~nondet4; {4775#true} is VALID [2022-04-08 09:27:19,573 INFO L290 TraceCheckUtils]: 6: Hoare triple {4775#true} assume ~main__tagbuf_len~0 >= 1;~main__t~0 := 0;~main__tagbuf_len~0 := ~main__tagbuf_len~0 - 1; {4780#(and (< 0 (+ main_~main__tagbuf_len~0 1)) (= main_~main__t~0 0))} is VALID [2022-04-08 09:27:19,573 INFO L290 TraceCheckUtils]: 7: Hoare triple {4780#(and (< 0 (+ main_~main__tagbuf_len~0 1)) (= main_~main__t~0 0))} assume !(~main__t~0 == ~main__tagbuf_len~0);havoc ~main____CPAchecker_TMP_0~0;assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~main____CPAchecker_TMP_0~0 := #t~nondet5;havoc #t~nondet5; {4781#(and (= main_~main__t~0 0) (not (<= main_~main__tagbuf_len~0 0)))} is VALID [2022-04-08 09:27:19,574 INFO L290 TraceCheckUtils]: 8: Hoare triple {4781#(and (= main_~main__t~0 0) (not (<= main_~main__tagbuf_len~0 0)))} assume !!(0 == ~main____CPAchecker_TMP_0~0);havoc ~__tmp_13~0;~__tmp_13~0 := (if 0 <= ~main__t~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~12;~__VERIFIER_assert__cond~12 := ~__tmp_13~0; {4781#(and (= main_~main__t~0 0) (not (<= main_~main__tagbuf_len~0 0)))} is VALID [2022-04-08 09:27:19,574 INFO L290 TraceCheckUtils]: 9: Hoare triple {4781#(and (= main_~main__t~0 0) (not (<= main_~main__tagbuf_len~0 0)))} assume !(0 == ~__VERIFIER_assert__cond~12);havoc ~__tmp_14~0;~__tmp_14~0 := (if ~main__t~0 <= ~main__tagbuf_len~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~13;~__VERIFIER_assert__cond~13 := ~__tmp_14~0; {4781#(and (= main_~main__t~0 0) (not (<= main_~main__tagbuf_len~0 0)))} is VALID [2022-04-08 09:27:19,575 INFO L290 TraceCheckUtils]: 10: Hoare triple {4781#(and (= main_~main__t~0 0) (not (<= main_~main__tagbuf_len~0 0)))} assume !(0 == ~__VERIFIER_assert__cond~13);~__tmp_383_0~0 := ~main____CPAchecker_TMP_0~0; {4781#(and (= main_~main__t~0 0) (not (<= main_~main__tagbuf_len~0 0)))} is VALID [2022-04-08 09:27:19,575 INFO L290 TraceCheckUtils]: 11: Hoare triple {4781#(and (= main_~main__t~0 0) (not (<= main_~main__tagbuf_len~0 0)))} ~main____CPAchecker_TMP_0~0 := ~__tmp_383_0~0;~main____CPAchecker_TMP_1~0 := ~main__t~0;~main__t~0 := 1 + ~main__t~0; {4782#(and (<= main_~main__t~0 1) (not (<= main_~main__tagbuf_len~0 0)))} is VALID [2022-04-08 09:27:19,575 INFO L290 TraceCheckUtils]: 12: Hoare triple {4782#(and (<= main_~main__t~0 1) (not (<= main_~main__tagbuf_len~0 0)))} assume !(~main__t~0 == ~main__tagbuf_len~0);havoc ~main____CPAchecker_TMP_0~1;assume -2147483648 <= #t~nondet9 && #t~nondet9 <= 2147483647;~main____CPAchecker_TMP_0~1 := #t~nondet9;havoc #t~nondet9; {4782#(and (<= main_~main__t~0 1) (not (<= main_~main__tagbuf_len~0 0)))} is VALID [2022-04-08 09:27:19,576 INFO L290 TraceCheckUtils]: 13: Hoare triple {4782#(and (<= main_~main__t~0 1) (not (<= main_~main__tagbuf_len~0 0)))} assume !!(0 == ~main____CPAchecker_TMP_0~1);havoc ~__tmp_19~0;~__tmp_19~0 := (if 0 <= ~main__t~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~18;~__VERIFIER_assert__cond~18 := ~__tmp_19~0; {4782#(and (<= main_~main__t~0 1) (not (<= main_~main__tagbuf_len~0 0)))} is VALID [2022-04-08 09:27:19,576 INFO L290 TraceCheckUtils]: 14: Hoare triple {4782#(and (<= main_~main__t~0 1) (not (<= main_~main__tagbuf_len~0 0)))} assume !(0 == ~__VERIFIER_assert__cond~18);havoc ~__tmp_20~0;~__tmp_20~0 := (if ~main__t~0 <= ~main__tagbuf_len~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~19;~__VERIFIER_assert__cond~19 := ~__tmp_20~0; {4783#(not (= main_~__VERIFIER_assert__cond~19 0))} is VALID [2022-04-08 09:27:19,580 INFO L290 TraceCheckUtils]: 15: Hoare triple {4783#(not (= main_~__VERIFIER_assert__cond~19 0))} assume 0 == ~__VERIFIER_assert__cond~19; {4776#false} is VALID [2022-04-08 09:27:19,580 INFO L290 TraceCheckUtils]: 16: Hoare triple {4776#false} assume !false; {4776#false} is VALID [2022-04-08 09:27:19,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-08 09:27:19,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 09:27:19,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207975752] [2022-04-08 09:27:19,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207975752] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 09:27:19,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 09:27:19,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-04-08 09:27:19,581 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 09:27:19,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1614817937] [2022-04-08 09:27:19,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1614817937] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 09:27:19,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 09:27:19,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-04-08 09:27:19,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110381634] [2022-04-08 09:27:19,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 09:27:19,582 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-04-08 09:27:19,582 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 09:27:19,582 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:19,594 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 17 edges. 17 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 09:27:19,594 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-04-08 09:27:19,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 09:27:19,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-04-08 09:27:19,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-04-08 09:27:19,595 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:20,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 09:27:20,011 INFO L93 Difference]: Finished difference Result 110 states and 119 transitions. [2022-04-08 09:27:20,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-08 09:27:20,011 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-04-08 09:27:20,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 09:27:20,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:20,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2022-04-08 09:27:20,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:20,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2022-04-08 09:27:20,013 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 9 states and 119 transitions. [2022-04-08 09:27:20,082 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 119 edges. 119 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 09:27:20,083 INFO L225 Difference]: With dead ends: 110 [2022-04-08 09:27:20,083 INFO L226 Difference]: Without dead ends: 108 [2022-04-08 09:27:20,084 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-04-08 09:27:20,084 INFO L913 BasicCegarLoop]: 70 mSDtfsCounter, 87 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-08 09:27:20,084 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 188 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-08 09:27:20,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-04-08 09:27:20,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 56. [2022-04-08 09:27:20,162 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 09:27:20,162 INFO L82 GeneralOperation]: Start isEquivalent. First operand 108 states. Second operand has 56 states, 45 states have (on average 1.288888888888889) internal successors, (58), 52 states have internal predecessors, (58), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:20,162 INFO L74 IsIncluded]: Start isIncluded. First operand 108 states. Second operand has 56 states, 45 states have (on average 1.288888888888889) internal successors, (58), 52 states have internal predecessors, (58), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:20,162 INFO L87 Difference]: Start difference. First operand 108 states. Second operand has 56 states, 45 states have (on average 1.288888888888889) internal successors, (58), 52 states have internal predecessors, (58), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:20,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 09:27:20,164 INFO L93 Difference]: Finished difference Result 108 states and 117 transitions. [2022-04-08 09:27:20,164 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 117 transitions. [2022-04-08 09:27:20,164 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 09:27:20,164 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 09:27:20,164 INFO L74 IsIncluded]: Start isIncluded. First operand has 56 states, 45 states have (on average 1.288888888888889) internal successors, (58), 52 states have internal predecessors, (58), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 108 states. [2022-04-08 09:27:20,164 INFO L87 Difference]: Start difference. First operand has 56 states, 45 states have (on average 1.288888888888889) internal successors, (58), 52 states have internal predecessors, (58), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 108 states. [2022-04-08 09:27:20,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 09:27:20,165 INFO L93 Difference]: Finished difference Result 108 states and 117 transitions. [2022-04-08 09:27:20,165 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 117 transitions. [2022-04-08 09:27:20,166 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 09:27:20,166 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 09:27:20,166 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 09:27:20,166 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 09:27:20,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 45 states have (on average 1.288888888888889) internal successors, (58), 52 states have internal predecessors, (58), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:20,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 61 transitions. [2022-04-08 09:27:20,167 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 61 transitions. Word has length 17 [2022-04-08 09:27:20,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 09:27:20,167 INFO L478 AbstractCegarLoop]: Abstraction has 56 states and 61 transitions. [2022-04-08 09:27:20,167 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:20,167 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 56 states and 61 transitions. [2022-04-08 09:27:20,221 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 61 edges. 61 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 09:27:20,221 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 61 transitions. [2022-04-08 09:27:20,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-04-08 09:27:20,221 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 09:27:20,221 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 09:27:20,221 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-04-08 09:27:20,222 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr15ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-04-08 09:27:20,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 09:27:20,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1696726294, now seen corresponding path program 1 times [2022-04-08 09:27:20,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 09:27:20,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [36557710] [2022-04-08 09:27:20,222 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-08 09:27:20,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1696726294, now seen corresponding path program 2 times [2022-04-08 09:27:20,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 09:27:20,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219156259] [2022-04-08 09:27:20,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 09:27:20,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 09:27:20,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 09:27:20,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-08 09:27:20,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 09:27:20,313 INFO L290 TraceCheckUtils]: 0: Hoare triple {5350#(and (= |old(~__return_305~0)| ~__return_305~0) (= |old(~__tmp_259_0~0)| ~__tmp_259_0~0) (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__tmp_383_0~0)| ~__tmp_383_0~0) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(33, 2);call #Ultimate.allocInit(12, 3);~__return_main~0 := 0;~__tmp_259_0~0 := 0;~__return_305~0 := 0;~__tmp_383_0~0 := 0; {5341#true} is VALID [2022-04-08 09:27:20,313 INFO L290 TraceCheckUtils]: 1: Hoare triple {5341#true} assume true; {5341#true} is VALID [2022-04-08 09:27:20,313 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {5341#true} {5341#true} #191#return; {5341#true} is VALID [2022-04-08 09:27:20,314 INFO L272 TraceCheckUtils]: 0: Hoare triple {5341#true} call ULTIMATE.init(); {5350#(and (= |old(~__return_305~0)| ~__return_305~0) (= |old(~__tmp_259_0~0)| ~__tmp_259_0~0) (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__tmp_383_0~0)| ~__tmp_383_0~0) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-08 09:27:20,314 INFO L290 TraceCheckUtils]: 1: Hoare triple {5350#(and (= |old(~__return_305~0)| ~__return_305~0) (= |old(~__tmp_259_0~0)| ~__tmp_259_0~0) (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__tmp_383_0~0)| ~__tmp_383_0~0) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(33, 2);call #Ultimate.allocInit(12, 3);~__return_main~0 := 0;~__tmp_259_0~0 := 0;~__return_305~0 := 0;~__tmp_383_0~0 := 0; {5341#true} is VALID [2022-04-08 09:27:20,314 INFO L290 TraceCheckUtils]: 2: Hoare triple {5341#true} assume true; {5341#true} is VALID [2022-04-08 09:27:20,314 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {5341#true} {5341#true} #191#return; {5341#true} is VALID [2022-04-08 09:27:20,314 INFO L272 TraceCheckUtils]: 4: Hoare triple {5341#true} call #t~ret10 := main(); {5341#true} is VALID [2022-04-08 09:27:20,314 INFO L290 TraceCheckUtils]: 5: Hoare triple {5341#true} havoc ~main__tagbuf_len~0;havoc ~main__t~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~main__tagbuf_len~0 := #t~nondet4;havoc #t~nondet4; {5341#true} is VALID [2022-04-08 09:27:20,314 INFO L290 TraceCheckUtils]: 6: Hoare triple {5341#true} assume ~main__tagbuf_len~0 >= 1;~main__t~0 := 0;~main__tagbuf_len~0 := ~main__tagbuf_len~0 - 1; {5346#(and (< 0 (+ main_~main__tagbuf_len~0 1)) (= main_~main__t~0 0))} is VALID [2022-04-08 09:27:20,315 INFO L290 TraceCheckUtils]: 7: Hoare triple {5346#(and (< 0 (+ main_~main__tagbuf_len~0 1)) (= main_~main__t~0 0))} assume !(~main__t~0 == ~main__tagbuf_len~0);havoc ~main____CPAchecker_TMP_0~0;assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~main____CPAchecker_TMP_0~0 := #t~nondet5;havoc #t~nondet5; {5347#(and (= main_~main__t~0 0) (not (<= main_~main__tagbuf_len~0 0)))} is VALID [2022-04-08 09:27:20,315 INFO L290 TraceCheckUtils]: 8: Hoare triple {5347#(and (= main_~main__t~0 0) (not (<= main_~main__tagbuf_len~0 0)))} assume !!(0 == ~main____CPAchecker_TMP_0~0);havoc ~__tmp_13~0;~__tmp_13~0 := (if 0 <= ~main__t~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~12;~__VERIFIER_assert__cond~12 := ~__tmp_13~0; {5347#(and (= main_~main__t~0 0) (not (<= main_~main__tagbuf_len~0 0)))} is VALID [2022-04-08 09:27:20,316 INFO L290 TraceCheckUtils]: 9: Hoare triple {5347#(and (= main_~main__t~0 0) (not (<= main_~main__tagbuf_len~0 0)))} assume !(0 == ~__VERIFIER_assert__cond~12);havoc ~__tmp_14~0;~__tmp_14~0 := (if ~main__t~0 <= ~main__tagbuf_len~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~13;~__VERIFIER_assert__cond~13 := ~__tmp_14~0; {5347#(and (= main_~main__t~0 0) (not (<= main_~main__tagbuf_len~0 0)))} is VALID [2022-04-08 09:27:20,316 INFO L290 TraceCheckUtils]: 10: Hoare triple {5347#(and (= main_~main__t~0 0) (not (<= main_~main__tagbuf_len~0 0)))} assume !(0 == ~__VERIFIER_assert__cond~13);~__tmp_383_0~0 := ~main____CPAchecker_TMP_0~0; {5347#(and (= main_~main__t~0 0) (not (<= main_~main__tagbuf_len~0 0)))} is VALID [2022-04-08 09:27:20,316 INFO L290 TraceCheckUtils]: 11: Hoare triple {5347#(and (= main_~main__t~0 0) (not (<= main_~main__tagbuf_len~0 0)))} ~main____CPAchecker_TMP_0~0 := ~__tmp_383_0~0;~main____CPAchecker_TMP_1~0 := ~main__t~0;~main__t~0 := 1 + ~main__t~0; {5348#(and (<= main_~main__t~0 1) (not (<= main_~main__tagbuf_len~0 0)))} is VALID [2022-04-08 09:27:20,317 INFO L290 TraceCheckUtils]: 12: Hoare triple {5348#(and (<= main_~main__t~0 1) (not (<= main_~main__tagbuf_len~0 0)))} assume !(~main__t~0 == ~main__tagbuf_len~0);havoc ~main____CPAchecker_TMP_0~1;assume -2147483648 <= #t~nondet9 && #t~nondet9 <= 2147483647;~main____CPAchecker_TMP_0~1 := #t~nondet9;havoc #t~nondet9; {5348#(and (<= main_~main__t~0 1) (not (<= main_~main__tagbuf_len~0 0)))} is VALID [2022-04-08 09:27:20,317 INFO L290 TraceCheckUtils]: 13: Hoare triple {5348#(and (<= main_~main__t~0 1) (not (<= main_~main__tagbuf_len~0 0)))} assume !(0 == ~main____CPAchecker_TMP_0~1);havoc ~__tmp_17~0;~__tmp_17~0 := (if 0 <= ~main__t~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~16;~__VERIFIER_assert__cond~16 := ~__tmp_17~0; {5348#(and (<= main_~main__t~0 1) (not (<= main_~main__tagbuf_len~0 0)))} is VALID [2022-04-08 09:27:20,317 INFO L290 TraceCheckUtils]: 14: Hoare triple {5348#(and (<= main_~main__t~0 1) (not (<= main_~main__tagbuf_len~0 0)))} assume !(0 == ~__VERIFIER_assert__cond~16);havoc ~__tmp_18~0;~__tmp_18~0 := (if ~main__t~0 <= ~main__tagbuf_len~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~17;~__VERIFIER_assert__cond~17 := ~__tmp_18~0; {5349#(not (= main_~__VERIFIER_assert__cond~17 0))} is VALID [2022-04-08 09:27:20,318 INFO L290 TraceCheckUtils]: 15: Hoare triple {5349#(not (= main_~__VERIFIER_assert__cond~17 0))} assume 0 == ~__VERIFIER_assert__cond~17; {5342#false} is VALID [2022-04-08 09:27:20,318 INFO L290 TraceCheckUtils]: 16: Hoare triple {5342#false} assume !false; {5342#false} is VALID [2022-04-08 09:27:20,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-08 09:27:20,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 09:27:20,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219156259] [2022-04-08 09:27:20,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219156259] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 09:27:20,318 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 09:27:20,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-04-08 09:27:20,318 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 09:27:20,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [36557710] [2022-04-08 09:27:20,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [36557710] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 09:27:20,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 09:27:20,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-04-08 09:27:20,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665014024] [2022-04-08 09:27:20,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 09:27:20,319 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-04-08 09:27:20,319 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 09:27:20,319 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:20,329 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 17 edges. 17 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 09:27:20,329 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-04-08 09:27:20,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 09:27:20,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-04-08 09:27:20,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-04-08 09:27:20,330 INFO L87 Difference]: Start difference. First operand 56 states and 61 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:20,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 09:27:20,794 INFO L93 Difference]: Finished difference Result 108 states and 117 transitions. [2022-04-08 09:27:20,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-08 09:27:20,794 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-04-08 09:27:20,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 09:27:20,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:20,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2022-04-08 09:27:20,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:20,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2022-04-08 09:27:20,796 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 9 states and 117 transitions. [2022-04-08 09:27:20,862 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 117 edges. 117 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 09:27:20,863 INFO L225 Difference]: With dead ends: 108 [2022-04-08 09:27:20,863 INFO L226 Difference]: Without dead ends: 106 [2022-04-08 09:27:20,864 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-04-08 09:27:20,864 INFO L913 BasicCegarLoop]: 61 mSDtfsCounter, 74 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-08 09:27:20,864 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 168 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-08 09:27:20,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-04-08 09:27:20,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 58. [2022-04-08 09:27:20,926 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 09:27:20,927 INFO L82 GeneralOperation]: Start isEquivalent. First operand 106 states. Second operand has 58 states, 47 states have (on average 1.2765957446808511) internal successors, (60), 54 states have internal predecessors, (60), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:20,927 INFO L74 IsIncluded]: Start isIncluded. First operand 106 states. Second operand has 58 states, 47 states have (on average 1.2765957446808511) internal successors, (60), 54 states have internal predecessors, (60), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:20,927 INFO L87 Difference]: Start difference. First operand 106 states. Second operand has 58 states, 47 states have (on average 1.2765957446808511) internal successors, (60), 54 states have internal predecessors, (60), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:20,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 09:27:20,928 INFO L93 Difference]: Finished difference Result 106 states and 115 transitions. [2022-04-08 09:27:20,928 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 115 transitions. [2022-04-08 09:27:20,928 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 09:27:20,928 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 09:27:20,929 INFO L74 IsIncluded]: Start isIncluded. First operand has 58 states, 47 states have (on average 1.2765957446808511) internal successors, (60), 54 states have internal predecessors, (60), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 106 states. [2022-04-08 09:27:20,929 INFO L87 Difference]: Start difference. First operand has 58 states, 47 states have (on average 1.2765957446808511) internal successors, (60), 54 states have internal predecessors, (60), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 106 states. [2022-04-08 09:27:20,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 09:27:20,930 INFO L93 Difference]: Finished difference Result 106 states and 115 transitions. [2022-04-08 09:27:20,930 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 115 transitions. [2022-04-08 09:27:20,930 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 09:27:20,930 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 09:27:20,930 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 09:27:20,930 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 09:27:20,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 47 states have (on average 1.2765957446808511) internal successors, (60), 54 states have internal predecessors, (60), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:20,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 63 transitions. [2022-04-08 09:27:20,931 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 63 transitions. Word has length 17 [2022-04-08 09:27:20,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 09:27:20,931 INFO L478 AbstractCegarLoop]: Abstraction has 58 states and 63 transitions. [2022-04-08 09:27:20,931 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:20,931 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 58 states and 63 transitions. [2022-04-08 09:27:20,992 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 63 edges. 63 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 09:27:20,992 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 63 transitions. [2022-04-08 09:27:20,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-04-08 09:27:20,992 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 09:27:20,992 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 09:27:20,992 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-04-08 09:27:20,993 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr7ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-04-08 09:27:20,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 09:27:20,993 INFO L85 PathProgramCache]: Analyzing trace with hash 160273451, now seen corresponding path program 1 times [2022-04-08 09:27:20,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 09:27:20,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [975443500] [2022-04-08 09:27:20,993 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-08 09:27:20,993 INFO L85 PathProgramCache]: Analyzing trace with hash 160273451, now seen corresponding path program 2 times [2022-04-08 09:27:20,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 09:27:20,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931614749] [2022-04-08 09:27:20,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 09:27:20,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 09:27:21,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 09:27:21,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-08 09:27:21,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 09:27:21,028 INFO L290 TraceCheckUtils]: 0: Hoare triple {5911#(and (= |old(~__return_305~0)| ~__return_305~0) (= |old(~__tmp_259_0~0)| ~__tmp_259_0~0) (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__tmp_383_0~0)| ~__tmp_383_0~0) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(33, 2);call #Ultimate.allocInit(12, 3);~__return_main~0 := 0;~__tmp_259_0~0 := 0;~__return_305~0 := 0;~__tmp_383_0~0 := 0; {5903#true} is VALID [2022-04-08 09:27:21,028 INFO L290 TraceCheckUtils]: 1: Hoare triple {5903#true} assume true; {5903#true} is VALID [2022-04-08 09:27:21,029 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {5903#true} {5903#true} #191#return; {5903#true} is VALID [2022-04-08 09:27:21,029 INFO L272 TraceCheckUtils]: 0: Hoare triple {5903#true} call ULTIMATE.init(); {5911#(and (= |old(~__return_305~0)| ~__return_305~0) (= |old(~__tmp_259_0~0)| ~__tmp_259_0~0) (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__tmp_383_0~0)| ~__tmp_383_0~0) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-08 09:27:21,029 INFO L290 TraceCheckUtils]: 1: Hoare triple {5911#(and (= |old(~__return_305~0)| ~__return_305~0) (= |old(~__tmp_259_0~0)| ~__tmp_259_0~0) (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__tmp_383_0~0)| ~__tmp_383_0~0) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(33, 2);call #Ultimate.allocInit(12, 3);~__return_main~0 := 0;~__tmp_259_0~0 := 0;~__return_305~0 := 0;~__tmp_383_0~0 := 0; {5903#true} is VALID [2022-04-08 09:27:21,029 INFO L290 TraceCheckUtils]: 2: Hoare triple {5903#true} assume true; {5903#true} is VALID [2022-04-08 09:27:21,029 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {5903#true} {5903#true} #191#return; {5903#true} is VALID [2022-04-08 09:27:21,029 INFO L272 TraceCheckUtils]: 4: Hoare triple {5903#true} call #t~ret10 := main(); {5903#true} is VALID [2022-04-08 09:27:21,030 INFO L290 TraceCheckUtils]: 5: Hoare triple {5903#true} havoc ~main__tagbuf_len~0;havoc ~main__t~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~main__tagbuf_len~0 := #t~nondet4;havoc #t~nondet4; {5903#true} is VALID [2022-04-08 09:27:21,030 INFO L290 TraceCheckUtils]: 6: Hoare triple {5903#true} assume ~main__tagbuf_len~0 >= 1;~main__t~0 := 0;~main__tagbuf_len~0 := ~main__tagbuf_len~0 - 1; {5908#(= main_~main__t~0 0)} is VALID [2022-04-08 09:27:21,030 INFO L290 TraceCheckUtils]: 7: Hoare triple {5908#(= main_~main__t~0 0)} assume !(~main__t~0 == ~main__tagbuf_len~0);havoc ~main____CPAchecker_TMP_0~0;assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~main____CPAchecker_TMP_0~0 := #t~nondet5;havoc #t~nondet5; {5908#(= main_~main__t~0 0)} is VALID [2022-04-08 09:27:21,030 INFO L290 TraceCheckUtils]: 8: Hoare triple {5908#(= main_~main__t~0 0)} assume !(0 == ~main____CPAchecker_TMP_0~0);havoc ~__tmp_1~0;~__tmp_1~0 := (if 0 <= ~main__t~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~0;~__VERIFIER_assert__cond~0 := ~__tmp_1~0; {5908#(= main_~main__t~0 0)} is VALID [2022-04-08 09:27:21,030 INFO L290 TraceCheckUtils]: 9: Hoare triple {5908#(= main_~main__t~0 0)} assume !(0 == ~__VERIFIER_assert__cond~0);havoc ~__tmp_2~0;~__tmp_2~0 := (if ~main__t~0 <= ~main__tagbuf_len~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~1;~__VERIFIER_assert__cond~1 := ~__tmp_2~0; {5908#(= main_~main__t~0 0)} is VALID [2022-04-08 09:27:21,031 INFO L290 TraceCheckUtils]: 10: Hoare triple {5908#(= main_~main__t~0 0)} assume !(0 == ~__VERIFIER_assert__cond~1);~__tmp_259_0~0 := ~main____CPAchecker_TMP_0~0; {5908#(= main_~main__t~0 0)} is VALID [2022-04-08 09:27:21,035 INFO L290 TraceCheckUtils]: 11: Hoare triple {5908#(= main_~main__t~0 0)} ~main____CPAchecker_TMP_0~0 := ~__tmp_259_0~0;~main____CPAchecker_TMP_2~0 := ~main__t~0;~main__t~0 := 1 + ~main__t~0; {5909#(<= 1 main_~main__t~0)} is VALID [2022-04-08 09:27:21,035 INFO L290 TraceCheckUtils]: 12: Hoare triple {5909#(<= 1 main_~main__t~0)} assume !(~main__t~0 == ~main__tagbuf_len~0);havoc ~main____CPAchecker_TMP_3~0;assume -2147483648 <= #t~nondet6 && #t~nondet6 <= 2147483647;~main____CPAchecker_TMP_3~0 := #t~nondet6;havoc #t~nondet6; {5909#(<= 1 main_~main__t~0)} is VALID [2022-04-08 09:27:21,035 INFO L290 TraceCheckUtils]: 13: Hoare triple {5909#(<= 1 main_~main__t~0)} assume !(0 == ~main____CPAchecker_TMP_3~0);havoc ~main____CPAchecker_TMP_4~0;assume -2147483648 <= #t~nondet7 && #t~nondet7 <= 2147483647;~main____CPAchecker_TMP_4~0 := #t~nondet7;havoc #t~nondet7; {5909#(<= 1 main_~main__t~0)} is VALID [2022-04-08 09:27:21,036 INFO L290 TraceCheckUtils]: 14: Hoare triple {5909#(<= 1 main_~main__t~0)} assume !!(0 == ~main____CPAchecker_TMP_4~0); {5909#(<= 1 main_~main__t~0)} is VALID [2022-04-08 09:27:21,036 INFO L290 TraceCheckUtils]: 15: Hoare triple {5909#(<= 1 main_~main__t~0)} havoc ~__tmp_9~0;~__tmp_9~0 := (if 0 <= ~main__t~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~8;~__VERIFIER_assert__cond~8 := ~__tmp_9~0; {5910#(not (= main_~__VERIFIER_assert__cond~8 0))} is VALID [2022-04-08 09:27:21,036 INFO L290 TraceCheckUtils]: 16: Hoare triple {5910#(not (= main_~__VERIFIER_assert__cond~8 0))} assume 0 == ~__VERIFIER_assert__cond~8; {5904#false} is VALID [2022-04-08 09:27:21,036 INFO L290 TraceCheckUtils]: 17: Hoare triple {5904#false} assume !false; {5904#false} is VALID [2022-04-08 09:27:21,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-08 09:27:21,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 09:27:21,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931614749] [2022-04-08 09:27:21,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931614749] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 09:27:21,037 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 09:27:21,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-08 09:27:21,038 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 09:27:21,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [975443500] [2022-04-08 09:27:21,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [975443500] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 09:27:21,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 09:27:21,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-08 09:27:21,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768389199] [2022-04-08 09:27:21,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 09:27:21,039 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2022-04-08 09:27:21,040 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 09:27:21,040 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:21,051 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 18 edges. 18 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 09:27:21,051 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-08 09:27:21,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 09:27:21,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-08 09:27:21,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-04-08 09:27:21,051 INFO L87 Difference]: Start difference. First operand 58 states and 63 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:21,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 09:27:21,382 INFO L93 Difference]: Finished difference Result 79 states and 86 transitions. [2022-04-08 09:27:21,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-08 09:27:21,382 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2022-04-08 09:27:21,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 09:27:21,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:21,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 79 transitions. [2022-04-08 09:27:21,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:21,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 79 transitions. [2022-04-08 09:27:21,384 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 7 states and 79 transitions. [2022-04-08 09:27:21,433 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 79 edges. 79 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 09:27:21,434 INFO L225 Difference]: With dead ends: 79 [2022-04-08 09:27:21,434 INFO L226 Difference]: Without dead ends: 77 [2022-04-08 09:27:21,434 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-04-08 09:27:21,435 INFO L913 BasicCegarLoop]: 41 mSDtfsCounter, 65 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-08 09:27:21,435 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 108 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-08 09:27:21,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-04-08 09:27:21,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 56. [2022-04-08 09:27:21,491 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 09:27:21,492 INFO L82 GeneralOperation]: Start isEquivalent. First operand 77 states. Second operand has 56 states, 46 states have (on average 1.2608695652173914) internal successors, (58), 52 states have internal predecessors, (58), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:21,492 INFO L74 IsIncluded]: Start isIncluded. First operand 77 states. Second operand has 56 states, 46 states have (on average 1.2608695652173914) internal successors, (58), 52 states have internal predecessors, (58), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:21,492 INFO L87 Difference]: Start difference. First operand 77 states. Second operand has 56 states, 46 states have (on average 1.2608695652173914) internal successors, (58), 52 states have internal predecessors, (58), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:21,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 09:27:21,493 INFO L93 Difference]: Finished difference Result 77 states and 84 transitions. [2022-04-08 09:27:21,493 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 84 transitions. [2022-04-08 09:27:21,493 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 09:27:21,493 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 09:27:21,493 INFO L74 IsIncluded]: Start isIncluded. First operand has 56 states, 46 states have (on average 1.2608695652173914) internal successors, (58), 52 states have internal predecessors, (58), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 77 states. [2022-04-08 09:27:21,493 INFO L87 Difference]: Start difference. First operand has 56 states, 46 states have (on average 1.2608695652173914) internal successors, (58), 52 states have internal predecessors, (58), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 77 states. [2022-04-08 09:27:21,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 09:27:21,494 INFO L93 Difference]: Finished difference Result 77 states and 84 transitions. [2022-04-08 09:27:21,494 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 84 transitions. [2022-04-08 09:27:21,494 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 09:27:21,494 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 09:27:21,494 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 09:27:21,494 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 09:27:21,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 46 states have (on average 1.2608695652173914) internal successors, (58), 52 states have internal predecessors, (58), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:21,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 61 transitions. [2022-04-08 09:27:21,495 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 61 transitions. Word has length 18 [2022-04-08 09:27:21,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 09:27:21,495 INFO L478 AbstractCegarLoop]: Abstraction has 56 states and 61 transitions. [2022-04-08 09:27:21,495 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:21,496 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 56 states and 61 transitions. [2022-04-08 09:27:21,567 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 61 edges. 61 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 09:27:21,567 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 61 transitions. [2022-04-08 09:27:21,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-04-08 09:27:21,567 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 09:27:21,567 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 09:27:21,567 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-04-08 09:27:21,567 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-04-08 09:27:21,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 09:27:21,568 INFO L85 PathProgramCache]: Analyzing trace with hash 158908031, now seen corresponding path program 1 times [2022-04-08 09:27:21,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 09:27:21,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1525567691] [2022-04-08 09:27:21,568 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-08 09:27:21,568 INFO L85 PathProgramCache]: Analyzing trace with hash 158908031, now seen corresponding path program 2 times [2022-04-08 09:27:21,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 09:27:21,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485434593] [2022-04-08 09:27:21,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 09:27:21,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 09:27:21,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 09:27:21,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-08 09:27:21,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 09:27:21,671 INFO L290 TraceCheckUtils]: 0: Hoare triple {6351#(and (= |old(~__return_305~0)| ~__return_305~0) (= |old(~__tmp_259_0~0)| ~__tmp_259_0~0) (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__tmp_383_0~0)| ~__tmp_383_0~0) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(33, 2);call #Ultimate.allocInit(12, 3);~__return_main~0 := 0;~__tmp_259_0~0 := 0;~__return_305~0 := 0;~__tmp_383_0~0 := 0; {6342#true} is VALID [2022-04-08 09:27:21,671 INFO L290 TraceCheckUtils]: 1: Hoare triple {6342#true} assume true; {6342#true} is VALID [2022-04-08 09:27:21,671 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {6342#true} {6342#true} #191#return; {6342#true} is VALID [2022-04-08 09:27:21,672 INFO L272 TraceCheckUtils]: 0: Hoare triple {6342#true} call ULTIMATE.init(); {6351#(and (= |old(~__return_305~0)| ~__return_305~0) (= |old(~__tmp_259_0~0)| ~__tmp_259_0~0) (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__tmp_383_0~0)| ~__tmp_383_0~0) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-08 09:27:21,672 INFO L290 TraceCheckUtils]: 1: Hoare triple {6351#(and (= |old(~__return_305~0)| ~__return_305~0) (= |old(~__tmp_259_0~0)| ~__tmp_259_0~0) (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__tmp_383_0~0)| ~__tmp_383_0~0) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(33, 2);call #Ultimate.allocInit(12, 3);~__return_main~0 := 0;~__tmp_259_0~0 := 0;~__return_305~0 := 0;~__tmp_383_0~0 := 0; {6342#true} is VALID [2022-04-08 09:27:21,672 INFO L290 TraceCheckUtils]: 2: Hoare triple {6342#true} assume true; {6342#true} is VALID [2022-04-08 09:27:21,672 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {6342#true} {6342#true} #191#return; {6342#true} is VALID [2022-04-08 09:27:21,672 INFO L272 TraceCheckUtils]: 4: Hoare triple {6342#true} call #t~ret10 := main(); {6342#true} is VALID [2022-04-08 09:27:21,672 INFO L290 TraceCheckUtils]: 5: Hoare triple {6342#true} havoc ~main__tagbuf_len~0;havoc ~main__t~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~main__tagbuf_len~0 := #t~nondet4;havoc #t~nondet4; {6342#true} is VALID [2022-04-08 09:27:21,673 INFO L290 TraceCheckUtils]: 6: Hoare triple {6342#true} assume ~main__tagbuf_len~0 >= 1;~main__t~0 := 0;~main__tagbuf_len~0 := ~main__tagbuf_len~0 - 1; {6347#(and (< 0 (+ main_~main__tagbuf_len~0 1)) (= main_~main__t~0 0))} is VALID [2022-04-08 09:27:21,673 INFO L290 TraceCheckUtils]: 7: Hoare triple {6347#(and (< 0 (+ main_~main__tagbuf_len~0 1)) (= main_~main__t~0 0))} assume !(~main__t~0 == ~main__tagbuf_len~0);havoc ~main____CPAchecker_TMP_0~0;assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~main____CPAchecker_TMP_0~0 := #t~nondet5;havoc #t~nondet5; {6348#(and (= main_~main__t~0 0) (not (<= main_~main__tagbuf_len~0 0)))} is VALID [2022-04-08 09:27:21,674 INFO L290 TraceCheckUtils]: 8: Hoare triple {6348#(and (= main_~main__t~0 0) (not (<= main_~main__tagbuf_len~0 0)))} assume !(0 == ~main____CPAchecker_TMP_0~0);havoc ~__tmp_1~0;~__tmp_1~0 := (if 0 <= ~main__t~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~0;~__VERIFIER_assert__cond~0 := ~__tmp_1~0; {6348#(and (= main_~main__t~0 0) (not (<= main_~main__tagbuf_len~0 0)))} is VALID [2022-04-08 09:27:21,674 INFO L290 TraceCheckUtils]: 9: Hoare triple {6348#(and (= main_~main__t~0 0) (not (<= main_~main__tagbuf_len~0 0)))} assume !(0 == ~__VERIFIER_assert__cond~0);havoc ~__tmp_2~0;~__tmp_2~0 := (if ~main__t~0 <= ~main__tagbuf_len~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~1;~__VERIFIER_assert__cond~1 := ~__tmp_2~0; {6348#(and (= main_~main__t~0 0) (not (<= main_~main__tagbuf_len~0 0)))} is VALID [2022-04-08 09:27:21,675 INFO L290 TraceCheckUtils]: 10: Hoare triple {6348#(and (= main_~main__t~0 0) (not (<= main_~main__tagbuf_len~0 0)))} assume !(0 == ~__VERIFIER_assert__cond~1);~__tmp_259_0~0 := ~main____CPAchecker_TMP_0~0; {6348#(and (= main_~main__t~0 0) (not (<= main_~main__tagbuf_len~0 0)))} is VALID [2022-04-08 09:27:21,675 INFO L290 TraceCheckUtils]: 11: Hoare triple {6348#(and (= main_~main__t~0 0) (not (<= main_~main__tagbuf_len~0 0)))} ~main____CPAchecker_TMP_0~0 := ~__tmp_259_0~0;~main____CPAchecker_TMP_2~0 := ~main__t~0;~main__t~0 := 1 + ~main__t~0; {6349#(and (<= main_~main__t~0 1) (not (<= main_~main__tagbuf_len~0 0)))} is VALID [2022-04-08 09:27:21,675 INFO L290 TraceCheckUtils]: 12: Hoare triple {6349#(and (<= main_~main__t~0 1) (not (<= main_~main__tagbuf_len~0 0)))} assume !(~main__t~0 == ~main__tagbuf_len~0);havoc ~main____CPAchecker_TMP_3~0;assume -2147483648 <= #t~nondet6 && #t~nondet6 <= 2147483647;~main____CPAchecker_TMP_3~0 := #t~nondet6;havoc #t~nondet6; {6349#(and (<= main_~main__t~0 1) (not (<= main_~main__tagbuf_len~0 0)))} is VALID [2022-04-08 09:27:21,676 INFO L290 TraceCheckUtils]: 13: Hoare triple {6349#(and (<= main_~main__t~0 1) (not (<= main_~main__tagbuf_len~0 0)))} assume !(0 == ~main____CPAchecker_TMP_3~0);havoc ~main____CPAchecker_TMP_4~0;assume -2147483648 <= #t~nondet7 && #t~nondet7 <= 2147483647;~main____CPAchecker_TMP_4~0 := #t~nondet7;havoc #t~nondet7; {6349#(and (<= main_~main__t~0 1) (not (<= main_~main__tagbuf_len~0 0)))} is VALID [2022-04-08 09:27:21,676 INFO L290 TraceCheckUtils]: 14: Hoare triple {6349#(and (<= main_~main__t~0 1) (not (<= main_~main__tagbuf_len~0 0)))} assume !(0 == ~main____CPAchecker_TMP_4~0);havoc ~__tmp_5~0;~__tmp_5~0 := (if 0 <= ~main__t~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~4;~__VERIFIER_assert__cond~4 := ~__tmp_5~0; {6349#(and (<= main_~main__t~0 1) (not (<= main_~main__tagbuf_len~0 0)))} is VALID [2022-04-08 09:27:21,677 INFO L290 TraceCheckUtils]: 15: Hoare triple {6349#(and (<= main_~main__t~0 1) (not (<= main_~main__tagbuf_len~0 0)))} assume !(0 == ~__VERIFIER_assert__cond~4);havoc ~__tmp_6~0;~__tmp_6~0 := (if ~main__t~0 <= ~main__tagbuf_len~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~5;~__VERIFIER_assert__cond~5 := ~__tmp_6~0; {6350#(not (= main_~__VERIFIER_assert__cond~5 0))} is VALID [2022-04-08 09:27:21,677 INFO L290 TraceCheckUtils]: 16: Hoare triple {6350#(not (= main_~__VERIFIER_assert__cond~5 0))} assume 0 == ~__VERIFIER_assert__cond~5; {6343#false} is VALID [2022-04-08 09:27:21,677 INFO L290 TraceCheckUtils]: 17: Hoare triple {6343#false} assume !false; {6343#false} is VALID [2022-04-08 09:27:21,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-08 09:27:21,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 09:27:21,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485434593] [2022-04-08 09:27:21,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485434593] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 09:27:21,677 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 09:27:21,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-04-08 09:27:21,678 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 09:27:21,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1525567691] [2022-04-08 09:27:21,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1525567691] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 09:27:21,678 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 09:27:21,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-04-08 09:27:21,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688081321] [2022-04-08 09:27:21,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 09:27:21,678 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2022-04-08 09:27:21,678 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 09:27:21,678 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:21,689 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 18 edges. 18 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 09:27:21,689 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-04-08 09:27:21,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 09:27:21,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-04-08 09:27:21,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-04-08 09:27:21,690 INFO L87 Difference]: Start difference. First operand 56 states and 61 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:22,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 09:27:22,112 INFO L93 Difference]: Finished difference Result 90 states and 99 transitions. [2022-04-08 09:27:22,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-08 09:27:22,113 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2022-04-08 09:27:22,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 09:27:22,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:22,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2022-04-08 09:27:22,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:22,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2022-04-08 09:27:22,114 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 9 states and 99 transitions. [2022-04-08 09:27:22,174 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 99 edges. 99 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 09:27:22,174 INFO L225 Difference]: With dead ends: 90 [2022-04-08 09:27:22,174 INFO L226 Difference]: Without dead ends: 88 [2022-04-08 09:27:22,175 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-04-08 09:27:22,175 INFO L913 BasicCegarLoop]: 48 mSDtfsCounter, 61 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-08 09:27:22,175 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 144 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-08 09:27:22,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-04-08 09:27:22,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 62. [2022-04-08 09:27:22,242 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 09:27:22,242 INFO L82 GeneralOperation]: Start isEquivalent. First operand 88 states. Second operand has 62 states, 52 states have (on average 1.2692307692307692) internal successors, (66), 58 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:22,242 INFO L74 IsIncluded]: Start isIncluded. First operand 88 states. Second operand has 62 states, 52 states have (on average 1.2692307692307692) internal successors, (66), 58 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:22,242 INFO L87 Difference]: Start difference. First operand 88 states. Second operand has 62 states, 52 states have (on average 1.2692307692307692) internal successors, (66), 58 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:22,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 09:27:22,243 INFO L93 Difference]: Finished difference Result 88 states and 97 transitions. [2022-04-08 09:27:22,244 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 97 transitions. [2022-04-08 09:27:22,244 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 09:27:22,244 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 09:27:22,244 INFO L74 IsIncluded]: Start isIncluded. First operand has 62 states, 52 states have (on average 1.2692307692307692) internal successors, (66), 58 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 88 states. [2022-04-08 09:27:22,244 INFO L87 Difference]: Start difference. First operand has 62 states, 52 states have (on average 1.2692307692307692) internal successors, (66), 58 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 88 states. [2022-04-08 09:27:22,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 09:27:22,245 INFO L93 Difference]: Finished difference Result 88 states and 97 transitions. [2022-04-08 09:27:22,245 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 97 transitions. [2022-04-08 09:27:22,245 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 09:27:22,245 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 09:27:22,245 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 09:27:22,245 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 09:27:22,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 52 states have (on average 1.2692307692307692) internal successors, (66), 58 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:22,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 69 transitions. [2022-04-08 09:27:22,246 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 69 transitions. Word has length 18 [2022-04-08 09:27:22,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 09:27:22,246 INFO L478 AbstractCegarLoop]: Abstraction has 62 states and 69 transitions. [2022-04-08 09:27:22,246 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:22,246 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 62 states and 69 transitions. [2022-04-08 09:27:22,312 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 69 edges. 69 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 09:27:22,312 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 69 transitions. [2022-04-08 09:27:22,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-04-08 09:27:22,313 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 09:27:22,313 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 09:27:22,313 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-04-08 09:27:22,313 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr10ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-04-08 09:27:22,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 09:27:22,313 INFO L85 PathProgramCache]: Analyzing trace with hash 206623281, now seen corresponding path program 1 times [2022-04-08 09:27:22,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 09:27:22,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1660192874] [2022-04-08 09:27:22,314 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-08 09:27:22,314 INFO L85 PathProgramCache]: Analyzing trace with hash 206623281, now seen corresponding path program 2 times [2022-04-08 09:27:22,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 09:27:22,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669281308] [2022-04-08 09:27:22,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 09:27:22,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 09:27:22,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 09:27:22,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-08 09:27:22,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 09:27:22,397 INFO L290 TraceCheckUtils]: 0: Hoare triple {6849#(and (= |old(~__return_305~0)| ~__return_305~0) (= |old(~__tmp_259_0~0)| ~__tmp_259_0~0) (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__tmp_383_0~0)| ~__tmp_383_0~0) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(33, 2);call #Ultimate.allocInit(12, 3);~__return_main~0 := 0;~__tmp_259_0~0 := 0;~__return_305~0 := 0;~__tmp_383_0~0 := 0; {6840#true} is VALID [2022-04-08 09:27:22,397 INFO L290 TraceCheckUtils]: 1: Hoare triple {6840#true} assume true; {6840#true} is VALID [2022-04-08 09:27:22,397 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {6840#true} {6840#true} #191#return; {6840#true} is VALID [2022-04-08 09:27:22,398 INFO L272 TraceCheckUtils]: 0: Hoare triple {6840#true} call ULTIMATE.init(); {6849#(and (= |old(~__return_305~0)| ~__return_305~0) (= |old(~__tmp_259_0~0)| ~__tmp_259_0~0) (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__tmp_383_0~0)| ~__tmp_383_0~0) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-08 09:27:22,398 INFO L290 TraceCheckUtils]: 1: Hoare triple {6849#(and (= |old(~__return_305~0)| ~__return_305~0) (= |old(~__tmp_259_0~0)| ~__tmp_259_0~0) (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__tmp_383_0~0)| ~__tmp_383_0~0) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(33, 2);call #Ultimate.allocInit(12, 3);~__return_main~0 := 0;~__tmp_259_0~0 := 0;~__return_305~0 := 0;~__tmp_383_0~0 := 0; {6840#true} is VALID [2022-04-08 09:27:22,398 INFO L290 TraceCheckUtils]: 2: Hoare triple {6840#true} assume true; {6840#true} is VALID [2022-04-08 09:27:22,398 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {6840#true} {6840#true} #191#return; {6840#true} is VALID [2022-04-08 09:27:22,398 INFO L272 TraceCheckUtils]: 4: Hoare triple {6840#true} call #t~ret10 := main(); {6840#true} is VALID [2022-04-08 09:27:22,398 INFO L290 TraceCheckUtils]: 5: Hoare triple {6840#true} havoc ~main__tagbuf_len~0;havoc ~main__t~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~main__tagbuf_len~0 := #t~nondet4;havoc #t~nondet4; {6840#true} is VALID [2022-04-08 09:27:22,399 INFO L290 TraceCheckUtils]: 6: Hoare triple {6840#true} assume ~main__tagbuf_len~0 >= 1;~main__t~0 := 0;~main__tagbuf_len~0 := ~main__tagbuf_len~0 - 1; {6845#(and (< 0 (+ main_~main__tagbuf_len~0 1)) (= main_~main__t~0 0))} is VALID [2022-04-08 09:27:22,399 INFO L290 TraceCheckUtils]: 7: Hoare triple {6845#(and (< 0 (+ main_~main__tagbuf_len~0 1)) (= main_~main__t~0 0))} assume !(~main__t~0 == ~main__tagbuf_len~0);havoc ~main____CPAchecker_TMP_0~0;assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~main____CPAchecker_TMP_0~0 := #t~nondet5;havoc #t~nondet5; {6846#(and (= main_~main__t~0 0) (not (<= main_~main__tagbuf_len~0 0)))} is VALID [2022-04-08 09:27:22,400 INFO L290 TraceCheckUtils]: 8: Hoare triple {6846#(and (= main_~main__t~0 0) (not (<= main_~main__tagbuf_len~0 0)))} assume !(0 == ~main____CPAchecker_TMP_0~0);havoc ~__tmp_1~0;~__tmp_1~0 := (if 0 <= ~main__t~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~0;~__VERIFIER_assert__cond~0 := ~__tmp_1~0; {6846#(and (= main_~main__t~0 0) (not (<= main_~main__tagbuf_len~0 0)))} is VALID [2022-04-08 09:27:22,400 INFO L290 TraceCheckUtils]: 9: Hoare triple {6846#(and (= main_~main__t~0 0) (not (<= main_~main__tagbuf_len~0 0)))} assume !(0 == ~__VERIFIER_assert__cond~0);havoc ~__tmp_2~0;~__tmp_2~0 := (if ~main__t~0 <= ~main__tagbuf_len~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~1;~__VERIFIER_assert__cond~1 := ~__tmp_2~0; {6846#(and (= main_~main__t~0 0) (not (<= main_~main__tagbuf_len~0 0)))} is VALID [2022-04-08 09:27:22,401 INFO L290 TraceCheckUtils]: 10: Hoare triple {6846#(and (= main_~main__t~0 0) (not (<= main_~main__tagbuf_len~0 0)))} assume !(0 == ~__VERIFIER_assert__cond~1);~__tmp_259_0~0 := ~main____CPAchecker_TMP_0~0; {6846#(and (= main_~main__t~0 0) (not (<= main_~main__tagbuf_len~0 0)))} is VALID [2022-04-08 09:27:22,401 INFO L290 TraceCheckUtils]: 11: Hoare triple {6846#(and (= main_~main__t~0 0) (not (<= main_~main__tagbuf_len~0 0)))} ~main____CPAchecker_TMP_0~0 := ~__tmp_259_0~0;~main____CPAchecker_TMP_2~0 := ~main__t~0;~main__t~0 := 1 + ~main__t~0; {6847#(and (<= main_~main__t~0 1) (not (<= main_~main__tagbuf_len~0 0)))} is VALID [2022-04-08 09:27:22,401 INFO L290 TraceCheckUtils]: 12: Hoare triple {6847#(and (<= main_~main__t~0 1) (not (<= main_~main__tagbuf_len~0 0)))} assume !(~main__t~0 == ~main__tagbuf_len~0);havoc ~main____CPAchecker_TMP_3~0;assume -2147483648 <= #t~nondet6 && #t~nondet6 <= 2147483647;~main____CPAchecker_TMP_3~0 := #t~nondet6;havoc #t~nondet6; {6847#(and (<= main_~main__t~0 1) (not (<= main_~main__tagbuf_len~0 0)))} is VALID [2022-04-08 09:27:22,402 INFO L290 TraceCheckUtils]: 13: Hoare triple {6847#(and (<= main_~main__t~0 1) (not (<= main_~main__tagbuf_len~0 0)))} assume !!(0 == ~main____CPAchecker_TMP_3~0);havoc ~main____CPAchecker_TMP_6~0;assume -2147483648 <= #t~nondet8 && #t~nondet8 <= 2147483647;~main____CPAchecker_TMP_6~0 := #t~nondet8;havoc #t~nondet8; {6847#(and (<= main_~main__t~0 1) (not (<= main_~main__tagbuf_len~0 0)))} is VALID [2022-04-08 09:27:22,402 INFO L290 TraceCheckUtils]: 14: Hoare triple {6847#(and (<= main_~main__t~0 1) (not (<= main_~main__tagbuf_len~0 0)))} assume !(0 == ~main____CPAchecker_TMP_6~0);havoc ~__tmp_11~0;~__tmp_11~0 := (if 0 <= ~main__t~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~10;~__VERIFIER_assert__cond~10 := ~__tmp_11~0; {6847#(and (<= main_~main__t~0 1) (not (<= main_~main__tagbuf_len~0 0)))} is VALID [2022-04-08 09:27:22,403 INFO L290 TraceCheckUtils]: 15: Hoare triple {6847#(and (<= main_~main__t~0 1) (not (<= main_~main__tagbuf_len~0 0)))} assume !(0 == ~__VERIFIER_assert__cond~10);havoc ~__tmp_12~0;~__tmp_12~0 := (if ~main__t~0 <= ~main__tagbuf_len~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~11;~__VERIFIER_assert__cond~11 := ~__tmp_12~0; {6848#(not (= main_~__VERIFIER_assert__cond~11 0))} is VALID [2022-04-08 09:27:22,403 INFO L290 TraceCheckUtils]: 16: Hoare triple {6848#(not (= main_~__VERIFIER_assert__cond~11 0))} assume 0 == ~__VERIFIER_assert__cond~11; {6841#false} is VALID [2022-04-08 09:27:22,403 INFO L290 TraceCheckUtils]: 17: Hoare triple {6841#false} assume !false; {6841#false} is VALID [2022-04-08 09:27:22,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-08 09:27:22,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 09:27:22,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669281308] [2022-04-08 09:27:22,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669281308] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 09:27:22,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 09:27:22,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-04-08 09:27:22,404 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 09:27:22,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1660192874] [2022-04-08 09:27:22,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1660192874] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 09:27:22,404 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 09:27:22,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-04-08 09:27:22,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697711080] [2022-04-08 09:27:22,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 09:27:22,404 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2022-04-08 09:27:22,404 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 09:27:22,404 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:22,415 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 18 edges. 18 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 09:27:22,415 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-04-08 09:27:22,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 09:27:22,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-04-08 09:27:22,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-04-08 09:27:22,416 INFO L87 Difference]: Start difference. First operand 62 states and 69 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:22,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 09:27:22,751 INFO L93 Difference]: Finished difference Result 74 states and 81 transitions. [2022-04-08 09:27:22,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-08 09:27:22,751 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2022-04-08 09:27:22,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 09:27:22,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:22,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 81 transitions. [2022-04-08 09:27:22,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:22,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 81 transitions. [2022-04-08 09:27:22,752 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 8 states and 81 transitions. [2022-04-08 09:27:22,802 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 81 edges. 81 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 09:27:22,803 INFO L225 Difference]: With dead ends: 74 [2022-04-08 09:27:22,803 INFO L226 Difference]: Without dead ends: 70 [2022-04-08 09:27:22,803 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-04-08 09:27:22,803 INFO L913 BasicCegarLoop]: 32 mSDtfsCounter, 34 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-08 09:27:22,804 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 136 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-08 09:27:22,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-04-08 09:27:22,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 63. [2022-04-08 09:27:22,870 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 09:27:22,870 INFO L82 GeneralOperation]: Start isEquivalent. First operand 70 states. Second operand has 63 states, 53 states have (on average 1.2641509433962264) internal successors, (67), 59 states have internal predecessors, (67), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:22,871 INFO L74 IsIncluded]: Start isIncluded. First operand 70 states. Second operand has 63 states, 53 states have (on average 1.2641509433962264) internal successors, (67), 59 states have internal predecessors, (67), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:22,871 INFO L87 Difference]: Start difference. First operand 70 states. Second operand has 63 states, 53 states have (on average 1.2641509433962264) internal successors, (67), 59 states have internal predecessors, (67), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:22,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 09:27:22,872 INFO L93 Difference]: Finished difference Result 70 states and 77 transitions. [2022-04-08 09:27:22,872 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 77 transitions. [2022-04-08 09:27:22,872 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 09:27:22,872 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 09:27:22,872 INFO L74 IsIncluded]: Start isIncluded. First operand has 63 states, 53 states have (on average 1.2641509433962264) internal successors, (67), 59 states have internal predecessors, (67), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 70 states. [2022-04-08 09:27:22,872 INFO L87 Difference]: Start difference. First operand has 63 states, 53 states have (on average 1.2641509433962264) internal successors, (67), 59 states have internal predecessors, (67), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 70 states. [2022-04-08 09:27:22,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 09:27:22,873 INFO L93 Difference]: Finished difference Result 70 states and 77 transitions. [2022-04-08 09:27:22,873 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 77 transitions. [2022-04-08 09:27:22,873 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 09:27:22,873 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 09:27:22,873 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 09:27:22,874 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 09:27:22,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 53 states have (on average 1.2641509433962264) internal successors, (67), 59 states have internal predecessors, (67), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:22,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 70 transitions. [2022-04-08 09:27:22,874 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 70 transitions. Word has length 18 [2022-04-08 09:27:22,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 09:27:22,874 INFO L478 AbstractCegarLoop]: Abstraction has 63 states and 70 transitions. [2022-04-08 09:27:22,875 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:22,875 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 63 states and 70 transitions. [2022-04-08 09:27:22,952 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 70 edges. 70 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 09:27:22,952 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 70 transitions. [2022-04-08 09:27:22,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-04-08 09:27:22,952 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 09:27:22,952 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 09:27:22,952 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-04-08 09:27:22,952 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr8ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-04-08 09:27:22,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 09:27:22,953 INFO L85 PathProgramCache]: Analyzing trace with hash 673512821, now seen corresponding path program 1 times [2022-04-08 09:27:22,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 09:27:22,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [116415075] [2022-04-08 09:27:22,953 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-08 09:27:22,953 INFO L85 PathProgramCache]: Analyzing trace with hash 673512821, now seen corresponding path program 2 times [2022-04-08 09:27:22,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 09:27:22,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698663181] [2022-04-08 09:27:22,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 09:27:22,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 09:27:22,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 09:27:23,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-08 09:27:23,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 09:27:23,032 INFO L290 TraceCheckUtils]: 0: Hoare triple {7281#(and (= |old(~__return_305~0)| ~__return_305~0) (= |old(~__tmp_259_0~0)| ~__tmp_259_0~0) (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__tmp_383_0~0)| ~__tmp_383_0~0) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(33, 2);call #Ultimate.allocInit(12, 3);~__return_main~0 := 0;~__tmp_259_0~0 := 0;~__return_305~0 := 0;~__tmp_383_0~0 := 0; {7272#true} is VALID [2022-04-08 09:27:23,032 INFO L290 TraceCheckUtils]: 1: Hoare triple {7272#true} assume true; {7272#true} is VALID [2022-04-08 09:27:23,032 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {7272#true} {7272#true} #191#return; {7272#true} is VALID [2022-04-08 09:27:23,034 INFO L272 TraceCheckUtils]: 0: Hoare triple {7272#true} call ULTIMATE.init(); {7281#(and (= |old(~__return_305~0)| ~__return_305~0) (= |old(~__tmp_259_0~0)| ~__tmp_259_0~0) (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__tmp_383_0~0)| ~__tmp_383_0~0) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-08 09:27:23,034 INFO L290 TraceCheckUtils]: 1: Hoare triple {7281#(and (= |old(~__return_305~0)| ~__return_305~0) (= |old(~__tmp_259_0~0)| ~__tmp_259_0~0) (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__tmp_383_0~0)| ~__tmp_383_0~0) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(33, 2);call #Ultimate.allocInit(12, 3);~__return_main~0 := 0;~__tmp_259_0~0 := 0;~__return_305~0 := 0;~__tmp_383_0~0 := 0; {7272#true} is VALID [2022-04-08 09:27:23,034 INFO L290 TraceCheckUtils]: 2: Hoare triple {7272#true} assume true; {7272#true} is VALID [2022-04-08 09:27:23,034 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {7272#true} {7272#true} #191#return; {7272#true} is VALID [2022-04-08 09:27:23,034 INFO L272 TraceCheckUtils]: 4: Hoare triple {7272#true} call #t~ret10 := main(); {7272#true} is VALID [2022-04-08 09:27:23,034 INFO L290 TraceCheckUtils]: 5: Hoare triple {7272#true} havoc ~main__tagbuf_len~0;havoc ~main__t~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~main__tagbuf_len~0 := #t~nondet4;havoc #t~nondet4; {7272#true} is VALID [2022-04-08 09:27:23,035 INFO L290 TraceCheckUtils]: 6: Hoare triple {7272#true} assume ~main__tagbuf_len~0 >= 1;~main__t~0 := 0;~main__tagbuf_len~0 := ~main__tagbuf_len~0 - 1; {7277#(and (< 0 (+ main_~main__tagbuf_len~0 1)) (= main_~main__t~0 0))} is VALID [2022-04-08 09:27:23,035 INFO L290 TraceCheckUtils]: 7: Hoare triple {7277#(and (< 0 (+ main_~main__tagbuf_len~0 1)) (= main_~main__t~0 0))} assume !(~main__t~0 == ~main__tagbuf_len~0);havoc ~main____CPAchecker_TMP_0~0;assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~main____CPAchecker_TMP_0~0 := #t~nondet5;havoc #t~nondet5; {7278#(and (= main_~main__t~0 0) (not (<= main_~main__tagbuf_len~0 0)))} is VALID [2022-04-08 09:27:23,035 INFO L290 TraceCheckUtils]: 8: Hoare triple {7278#(and (= main_~main__t~0 0) (not (<= main_~main__tagbuf_len~0 0)))} assume !(0 == ~main____CPAchecker_TMP_0~0);havoc ~__tmp_1~0;~__tmp_1~0 := (if 0 <= ~main__t~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~0;~__VERIFIER_assert__cond~0 := ~__tmp_1~0; {7278#(and (= main_~main__t~0 0) (not (<= main_~main__tagbuf_len~0 0)))} is VALID [2022-04-08 09:27:23,036 INFO L290 TraceCheckUtils]: 9: Hoare triple {7278#(and (= main_~main__t~0 0) (not (<= main_~main__tagbuf_len~0 0)))} assume !(0 == ~__VERIFIER_assert__cond~0);havoc ~__tmp_2~0;~__tmp_2~0 := (if ~main__t~0 <= ~main__tagbuf_len~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~1;~__VERIFIER_assert__cond~1 := ~__tmp_2~0; {7278#(and (= main_~main__t~0 0) (not (<= main_~main__tagbuf_len~0 0)))} is VALID [2022-04-08 09:27:23,036 INFO L290 TraceCheckUtils]: 10: Hoare triple {7278#(and (= main_~main__t~0 0) (not (<= main_~main__tagbuf_len~0 0)))} assume !(0 == ~__VERIFIER_assert__cond~1);~__tmp_259_0~0 := ~main____CPAchecker_TMP_0~0; {7278#(and (= main_~main__t~0 0) (not (<= main_~main__tagbuf_len~0 0)))} is VALID [2022-04-08 09:27:23,036 INFO L290 TraceCheckUtils]: 11: Hoare triple {7278#(and (= main_~main__t~0 0) (not (<= main_~main__tagbuf_len~0 0)))} ~main____CPAchecker_TMP_0~0 := ~__tmp_259_0~0;~main____CPAchecker_TMP_2~0 := ~main__t~0;~main__t~0 := 1 + ~main__t~0; {7279#(and (<= main_~main__t~0 1) (not (<= main_~main__tagbuf_len~0 0)))} is VALID [2022-04-08 09:27:23,037 INFO L290 TraceCheckUtils]: 12: Hoare triple {7279#(and (<= main_~main__t~0 1) (not (<= main_~main__tagbuf_len~0 0)))} assume !(~main__t~0 == ~main__tagbuf_len~0);havoc ~main____CPAchecker_TMP_3~0;assume -2147483648 <= #t~nondet6 && #t~nondet6 <= 2147483647;~main____CPAchecker_TMP_3~0 := #t~nondet6;havoc #t~nondet6; {7279#(and (<= main_~main__t~0 1) (not (<= main_~main__tagbuf_len~0 0)))} is VALID [2022-04-08 09:27:23,037 INFO L290 TraceCheckUtils]: 13: Hoare triple {7279#(and (<= main_~main__t~0 1) (not (<= main_~main__tagbuf_len~0 0)))} assume !(0 == ~main____CPAchecker_TMP_3~0);havoc ~main____CPAchecker_TMP_4~0;assume -2147483648 <= #t~nondet7 && #t~nondet7 <= 2147483647;~main____CPAchecker_TMP_4~0 := #t~nondet7;havoc #t~nondet7; {7279#(and (<= main_~main__t~0 1) (not (<= main_~main__tagbuf_len~0 0)))} is VALID [2022-04-08 09:27:23,037 INFO L290 TraceCheckUtils]: 14: Hoare triple {7279#(and (<= main_~main__t~0 1) (not (<= main_~main__tagbuf_len~0 0)))} assume !!(0 == ~main____CPAchecker_TMP_4~0); {7279#(and (<= main_~main__t~0 1) (not (<= main_~main__tagbuf_len~0 0)))} is VALID [2022-04-08 09:27:23,038 INFO L290 TraceCheckUtils]: 15: Hoare triple {7279#(and (<= main_~main__t~0 1) (not (<= main_~main__tagbuf_len~0 0)))} havoc ~__tmp_9~0;~__tmp_9~0 := (if 0 <= ~main__t~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~8;~__VERIFIER_assert__cond~8 := ~__tmp_9~0; {7279#(and (<= main_~main__t~0 1) (not (<= main_~main__tagbuf_len~0 0)))} is VALID [2022-04-08 09:27:23,038 INFO L290 TraceCheckUtils]: 16: Hoare triple {7279#(and (<= main_~main__t~0 1) (not (<= main_~main__tagbuf_len~0 0)))} assume !(0 == ~__VERIFIER_assert__cond~8);havoc ~__tmp_10~0;~__tmp_10~0 := (if ~main__t~0 <= ~main__tagbuf_len~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~9;~__VERIFIER_assert__cond~9 := ~__tmp_10~0; {7280#(not (= main_~__VERIFIER_assert__cond~9 0))} is VALID [2022-04-08 09:27:23,039 INFO L290 TraceCheckUtils]: 17: Hoare triple {7280#(not (= main_~__VERIFIER_assert__cond~9 0))} assume 0 == ~__VERIFIER_assert__cond~9; {7273#false} is VALID [2022-04-08 09:27:23,039 INFO L290 TraceCheckUtils]: 18: Hoare triple {7273#false} assume !false; {7273#false} is VALID [2022-04-08 09:27:23,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-08 09:27:23,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 09:27:23,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698663181] [2022-04-08 09:27:23,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698663181] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 09:27:23,040 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 09:27:23,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-04-08 09:27:23,040 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 09:27:23,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [116415075] [2022-04-08 09:27:23,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [116415075] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 09:27:23,040 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 09:27:23,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-04-08 09:27:23,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908765624] [2022-04-08 09:27:23,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 09:27:23,041 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2022-04-08 09:27:23,041 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 09:27:23,041 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:23,062 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 19 edges. 19 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 09:27:23,063 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-04-08 09:27:23,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 09:27:23,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-04-08 09:27:23,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-04-08 09:27:23,063 INFO L87 Difference]: Start difference. First operand 63 states and 70 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:23,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 09:27:23,468 INFO L93 Difference]: Finished difference Result 91 states and 100 transitions. [2022-04-08 09:27:23,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-08 09:27:23,469 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2022-04-08 09:27:23,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 09:27:23,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:23,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2022-04-08 09:27:23,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:23,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2022-04-08 09:27:23,470 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 9 states and 100 transitions. [2022-04-08 09:27:23,529 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 100 edges. 100 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 09:27:23,530 INFO L225 Difference]: With dead ends: 91 [2022-04-08 09:27:23,530 INFO L226 Difference]: Without dead ends: 89 [2022-04-08 09:27:23,531 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-04-08 09:27:23,531 INFO L913 BasicCegarLoop]: 57 mSDtfsCounter, 51 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-08 09:27:23,531 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 199 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-08 09:27:23,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-04-08 09:27:23,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 66. [2022-04-08 09:27:23,611 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 09:27:23,611 INFO L82 GeneralOperation]: Start isEquivalent. First operand 89 states. Second operand has 66 states, 56 states have (on average 1.25) internal successors, (70), 62 states have internal predecessors, (70), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:23,612 INFO L74 IsIncluded]: Start isIncluded. First operand 89 states. Second operand has 66 states, 56 states have (on average 1.25) internal successors, (70), 62 states have internal predecessors, (70), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:23,612 INFO L87 Difference]: Start difference. First operand 89 states. Second operand has 66 states, 56 states have (on average 1.25) internal successors, (70), 62 states have internal predecessors, (70), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:23,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 09:27:23,613 INFO L93 Difference]: Finished difference Result 89 states and 98 transitions. [2022-04-08 09:27:23,613 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 98 transitions. [2022-04-08 09:27:23,613 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 09:27:23,613 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 09:27:23,613 INFO L74 IsIncluded]: Start isIncluded. First operand has 66 states, 56 states have (on average 1.25) internal successors, (70), 62 states have internal predecessors, (70), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 89 states. [2022-04-08 09:27:23,613 INFO L87 Difference]: Start difference. First operand has 66 states, 56 states have (on average 1.25) internal successors, (70), 62 states have internal predecessors, (70), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 89 states. [2022-04-08 09:27:23,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 09:27:23,614 INFO L93 Difference]: Finished difference Result 89 states and 98 transitions. [2022-04-08 09:27:23,614 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 98 transitions. [2022-04-08 09:27:23,614 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 09:27:23,614 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 09:27:23,615 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 09:27:23,615 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 09:27:23,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 56 states have (on average 1.25) internal successors, (70), 62 states have internal predecessors, (70), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:23,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 73 transitions. [2022-04-08 09:27:23,615 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 73 transitions. Word has length 19 [2022-04-08 09:27:23,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 09:27:23,616 INFO L478 AbstractCegarLoop]: Abstraction has 66 states and 73 transitions. [2022-04-08 09:27:23,616 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:23,616 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 66 states and 73 transitions. [2022-04-08 09:27:23,707 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 73 edges. 73 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 09:27:23,707 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 73 transitions. [2022-04-08 09:27:23,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-04-08 09:27:23,707 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 09:27:23,708 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 09:27:23,708 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-04-08 09:27:23,708 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr5ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-04-08 09:27:23,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 09:27:23,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1908108286, now seen corresponding path program 1 times [2022-04-08 09:27:23,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 09:27:23,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1575027496] [2022-04-08 09:27:23,708 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-08 09:27:23,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1908108286, now seen corresponding path program 2 times [2022-04-08 09:27:23,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 09:27:23,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691930903] [2022-04-08 09:27:23,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 09:27:23,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 09:27:23,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 09:27:23,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-08 09:27:23,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 09:27:23,745 INFO L290 TraceCheckUtils]: 0: Hoare triple {7789#(and (= |old(~__return_305~0)| ~__return_305~0) (= |old(~__tmp_259_0~0)| ~__tmp_259_0~0) (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__tmp_383_0~0)| ~__tmp_383_0~0) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(33, 2);call #Ultimate.allocInit(12, 3);~__return_main~0 := 0;~__tmp_259_0~0 := 0;~__return_305~0 := 0;~__tmp_383_0~0 := 0; {7782#true} is VALID [2022-04-08 09:27:23,745 INFO L290 TraceCheckUtils]: 1: Hoare triple {7782#true} assume true; {7782#true} is VALID [2022-04-08 09:27:23,745 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {7782#true} {7782#true} #191#return; {7782#true} is VALID [2022-04-08 09:27:23,745 INFO L272 TraceCheckUtils]: 0: Hoare triple {7782#true} call ULTIMATE.init(); {7789#(and (= |old(~__return_305~0)| ~__return_305~0) (= |old(~__tmp_259_0~0)| ~__tmp_259_0~0) (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__tmp_383_0~0)| ~__tmp_383_0~0) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-08 09:27:23,745 INFO L290 TraceCheckUtils]: 1: Hoare triple {7789#(and (= |old(~__return_305~0)| ~__return_305~0) (= |old(~__tmp_259_0~0)| ~__tmp_259_0~0) (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__tmp_383_0~0)| ~__tmp_383_0~0) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(33, 2);call #Ultimate.allocInit(12, 3);~__return_main~0 := 0;~__tmp_259_0~0 := 0;~__return_305~0 := 0;~__tmp_383_0~0 := 0; {7782#true} is VALID [2022-04-08 09:27:23,745 INFO L290 TraceCheckUtils]: 2: Hoare triple {7782#true} assume true; {7782#true} is VALID [2022-04-08 09:27:23,746 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {7782#true} {7782#true} #191#return; {7782#true} is VALID [2022-04-08 09:27:23,746 INFO L272 TraceCheckUtils]: 4: Hoare triple {7782#true} call #t~ret10 := main(); {7782#true} is VALID [2022-04-08 09:27:23,746 INFO L290 TraceCheckUtils]: 5: Hoare triple {7782#true} havoc ~main__tagbuf_len~0;havoc ~main__t~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~main__tagbuf_len~0 := #t~nondet4;havoc #t~nondet4; {7782#true} is VALID [2022-04-08 09:27:23,746 INFO L290 TraceCheckUtils]: 6: Hoare triple {7782#true} assume ~main__tagbuf_len~0 >= 1;~main__t~0 := 0;~main__tagbuf_len~0 := ~main__tagbuf_len~0 - 1; {7787#(<= 0 main_~main__tagbuf_len~0)} is VALID [2022-04-08 09:27:23,746 INFO L290 TraceCheckUtils]: 7: Hoare triple {7787#(<= 0 main_~main__tagbuf_len~0)} assume !(~main__t~0 == ~main__tagbuf_len~0);havoc ~main____CPAchecker_TMP_0~0;assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~main____CPAchecker_TMP_0~0 := #t~nondet5;havoc #t~nondet5; {7787#(<= 0 main_~main__tagbuf_len~0)} is VALID [2022-04-08 09:27:23,747 INFO L290 TraceCheckUtils]: 8: Hoare triple {7787#(<= 0 main_~main__tagbuf_len~0)} assume !(0 == ~main____CPAchecker_TMP_0~0);havoc ~__tmp_1~0;~__tmp_1~0 := (if 0 <= ~main__t~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~0;~__VERIFIER_assert__cond~0 := ~__tmp_1~0; {7787#(<= 0 main_~main__tagbuf_len~0)} is VALID [2022-04-08 09:27:23,747 INFO L290 TraceCheckUtils]: 9: Hoare triple {7787#(<= 0 main_~main__tagbuf_len~0)} assume !(0 == ~__VERIFIER_assert__cond~0);havoc ~__tmp_2~0;~__tmp_2~0 := (if ~main__t~0 <= ~main__tagbuf_len~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~1;~__VERIFIER_assert__cond~1 := ~__tmp_2~0; {7787#(<= 0 main_~main__tagbuf_len~0)} is VALID [2022-04-08 09:27:23,747 INFO L290 TraceCheckUtils]: 10: Hoare triple {7787#(<= 0 main_~main__tagbuf_len~0)} assume !(0 == ~__VERIFIER_assert__cond~1);~__tmp_259_0~0 := ~main____CPAchecker_TMP_0~0; {7787#(<= 0 main_~main__tagbuf_len~0)} is VALID [2022-04-08 09:27:23,747 INFO L290 TraceCheckUtils]: 11: Hoare triple {7787#(<= 0 main_~main__tagbuf_len~0)} ~main____CPAchecker_TMP_0~0 := ~__tmp_259_0~0;~main____CPAchecker_TMP_2~0 := ~main__t~0;~main__t~0 := 1 + ~main__t~0; {7787#(<= 0 main_~main__tagbuf_len~0)} is VALID [2022-04-08 09:27:23,748 INFO L290 TraceCheckUtils]: 12: Hoare triple {7787#(<= 0 main_~main__tagbuf_len~0)} assume !(~main__t~0 == ~main__tagbuf_len~0);havoc ~main____CPAchecker_TMP_3~0;assume -2147483648 <= #t~nondet6 && #t~nondet6 <= 2147483647;~main____CPAchecker_TMP_3~0 := #t~nondet6;havoc #t~nondet6; {7787#(<= 0 main_~main__tagbuf_len~0)} is VALID [2022-04-08 09:27:23,748 INFO L290 TraceCheckUtils]: 13: Hoare triple {7787#(<= 0 main_~main__tagbuf_len~0)} assume !(0 == ~main____CPAchecker_TMP_3~0);havoc ~main____CPAchecker_TMP_4~0;assume -2147483648 <= #t~nondet7 && #t~nondet7 <= 2147483647;~main____CPAchecker_TMP_4~0 := #t~nondet7;havoc #t~nondet7; {7787#(<= 0 main_~main__tagbuf_len~0)} is VALID [2022-04-08 09:27:23,748 INFO L290 TraceCheckUtils]: 14: Hoare triple {7787#(<= 0 main_~main__tagbuf_len~0)} assume !(0 == ~main____CPAchecker_TMP_4~0);havoc ~__tmp_5~0;~__tmp_5~0 := (if 0 <= ~main__t~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~4;~__VERIFIER_assert__cond~4 := ~__tmp_5~0; {7787#(<= 0 main_~main__tagbuf_len~0)} is VALID [2022-04-08 09:27:23,748 INFO L290 TraceCheckUtils]: 15: Hoare triple {7787#(<= 0 main_~main__tagbuf_len~0)} assume !(0 == ~__VERIFIER_assert__cond~4);havoc ~__tmp_6~0;~__tmp_6~0 := (if ~main__t~0 <= ~main__tagbuf_len~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~5;~__VERIFIER_assert__cond~5 := ~__tmp_6~0; {7787#(<= 0 main_~main__tagbuf_len~0)} is VALID [2022-04-08 09:27:23,749 INFO L290 TraceCheckUtils]: 16: Hoare triple {7787#(<= 0 main_~main__tagbuf_len~0)} assume !(0 == ~__VERIFIER_assert__cond~5);~main____CPAchecker_TMP_5~0 := ~main__t~0;~main__t~0 := 1 + ~main__t~0; {7787#(<= 0 main_~main__tagbuf_len~0)} is VALID [2022-04-08 09:27:23,749 INFO L290 TraceCheckUtils]: 17: Hoare triple {7787#(<= 0 main_~main__tagbuf_len~0)} assume ~main__t~0 == ~main__tagbuf_len~0;havoc ~__tmp_7~0;~__tmp_7~0 := (if 0 <= ~main__t~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~6;~__VERIFIER_assert__cond~6 := ~__tmp_7~0; {7788#(not (= main_~__VERIFIER_assert__cond~6 0))} is VALID [2022-04-08 09:27:23,749 INFO L290 TraceCheckUtils]: 18: Hoare triple {7788#(not (= main_~__VERIFIER_assert__cond~6 0))} assume 0 == ~__VERIFIER_assert__cond~6; {7783#false} is VALID [2022-04-08 09:27:23,749 INFO L290 TraceCheckUtils]: 19: Hoare triple {7783#false} assume !false; {7783#false} is VALID [2022-04-08 09:27:23,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-08 09:27:23,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 09:27:23,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691930903] [2022-04-08 09:27:23,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691930903] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 09:27:23,750 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 09:27:23,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-08 09:27:23,750 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 09:27:23,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1575027496] [2022-04-08 09:27:23,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1575027496] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 09:27:23,750 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 09:27:23,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-08 09:27:23,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103257634] [2022-04-08 09:27:23,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 09:27:23,751 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2022-04-08 09:27:23,751 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 09:27:23,751 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:23,762 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 20 edges. 20 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 09:27:23,763 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-08 09:27:23,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 09:27:23,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-08 09:27:23,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-08 09:27:23,763 INFO L87 Difference]: Start difference. First operand 66 states and 73 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:23,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 09:27:23,985 INFO L93 Difference]: Finished difference Result 66 states and 73 transitions. [2022-04-08 09:27:23,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-08 09:27:23,985 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2022-04-08 09:27:23,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 09:27:23,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:23,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 53 transitions. [2022-04-08 09:27:23,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:23,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 53 transitions. [2022-04-08 09:27:23,986 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 6 states and 53 transitions. [2022-04-08 09:27:24,024 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 53 edges. 53 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 09:27:24,025 INFO L225 Difference]: With dead ends: 66 [2022-04-08 09:27:24,025 INFO L226 Difference]: Without dead ends: 64 [2022-04-08 09:27:24,025 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-04-08 09:27:24,026 INFO L913 BasicCegarLoop]: 38 mSDtfsCounter, 44 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-08 09:27:24,026 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 75 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-08 09:27:24,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-04-08 09:27:24,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2022-04-08 09:27:24,115 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 09:27:24,115 INFO L82 GeneralOperation]: Start isEquivalent. First operand 64 states. Second operand has 64 states, 55 states have (on average 1.2363636363636363) internal successors, (68), 60 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:24,115 INFO L74 IsIncluded]: Start isIncluded. First operand 64 states. Second operand has 64 states, 55 states have (on average 1.2363636363636363) internal successors, (68), 60 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:24,115 INFO L87 Difference]: Start difference. First operand 64 states. Second operand has 64 states, 55 states have (on average 1.2363636363636363) internal successors, (68), 60 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:24,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 09:27:24,116 INFO L93 Difference]: Finished difference Result 64 states and 71 transitions. [2022-04-08 09:27:24,116 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 71 transitions. [2022-04-08 09:27:24,116 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 09:27:24,116 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 09:27:24,116 INFO L74 IsIncluded]: Start isIncluded. First operand has 64 states, 55 states have (on average 1.2363636363636363) internal successors, (68), 60 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 64 states. [2022-04-08 09:27:24,117 INFO L87 Difference]: Start difference. First operand has 64 states, 55 states have (on average 1.2363636363636363) internal successors, (68), 60 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 64 states. [2022-04-08 09:27:24,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 09:27:24,117 INFO L93 Difference]: Finished difference Result 64 states and 71 transitions. [2022-04-08 09:27:24,117 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 71 transitions. [2022-04-08 09:27:24,117 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 09:27:24,117 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 09:27:24,117 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 09:27:24,118 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 09:27:24,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 55 states have (on average 1.2363636363636363) internal successors, (68), 60 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:24,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 71 transitions. [2022-04-08 09:27:24,118 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 71 transitions. Word has length 20 [2022-04-08 09:27:24,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 09:27:24,119 INFO L478 AbstractCegarLoop]: Abstraction has 64 states and 71 transitions. [2022-04-08 09:27:24,119 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:24,119 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 64 states and 71 transitions. [2022-04-08 09:27:24,196 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 71 edges. 71 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 09:27:24,196 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 71 transitions. [2022-04-08 09:27:24,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-04-08 09:27:24,197 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 09:27:24,197 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 09:27:24,197 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-04-08 09:27:24,197 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-04-08 09:27:24,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 09:27:24,197 INFO L85 PathProgramCache]: Analyzing trace with hash 978188398, now seen corresponding path program 1 times [2022-04-08 09:27:24,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 09:27:24,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1102978642] [2022-04-08 09:27:24,197 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-08 09:27:24,198 INFO L85 PathProgramCache]: Analyzing trace with hash 978188398, now seen corresponding path program 2 times [2022-04-08 09:27:24,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 09:27:24,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395101488] [2022-04-08 09:27:24,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 09:27:24,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 09:27:24,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 09:27:24,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-08 09:27:24,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 09:27:24,267 INFO L290 TraceCheckUtils]: 0: Hoare triple {8191#(and (= |old(~__return_305~0)| ~__return_305~0) (= |old(~__tmp_259_0~0)| ~__tmp_259_0~0) (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__tmp_383_0~0)| ~__tmp_383_0~0) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(33, 2);call #Ultimate.allocInit(12, 3);~__return_main~0 := 0;~__tmp_259_0~0 := 0;~__return_305~0 := 0;~__tmp_383_0~0 := 0; {8184#true} is VALID [2022-04-08 09:27:24,267 INFO L290 TraceCheckUtils]: 1: Hoare triple {8184#true} assume true; {8184#true} is VALID [2022-04-08 09:27:24,267 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {8184#true} {8184#true} #191#return; {8184#true} is VALID [2022-04-08 09:27:24,268 INFO L272 TraceCheckUtils]: 0: Hoare triple {8184#true} call ULTIMATE.init(); {8191#(and (= |old(~__return_305~0)| ~__return_305~0) (= |old(~__tmp_259_0~0)| ~__tmp_259_0~0) (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__tmp_383_0~0)| ~__tmp_383_0~0) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-08 09:27:24,268 INFO L290 TraceCheckUtils]: 1: Hoare triple {8191#(and (= |old(~__return_305~0)| ~__return_305~0) (= |old(~__tmp_259_0~0)| ~__tmp_259_0~0) (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__tmp_383_0~0)| ~__tmp_383_0~0) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(33, 2);call #Ultimate.allocInit(12, 3);~__return_main~0 := 0;~__tmp_259_0~0 := 0;~__return_305~0 := 0;~__tmp_383_0~0 := 0; {8184#true} is VALID [2022-04-08 09:27:24,268 INFO L290 TraceCheckUtils]: 2: Hoare triple {8184#true} assume true; {8184#true} is VALID [2022-04-08 09:27:24,268 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {8184#true} {8184#true} #191#return; {8184#true} is VALID [2022-04-08 09:27:24,268 INFO L272 TraceCheckUtils]: 4: Hoare triple {8184#true} call #t~ret10 := main(); {8184#true} is VALID [2022-04-08 09:27:24,268 INFO L290 TraceCheckUtils]: 5: Hoare triple {8184#true} havoc ~main__tagbuf_len~0;havoc ~main__t~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~main__tagbuf_len~0 := #t~nondet4;havoc #t~nondet4; {8184#true} is VALID [2022-04-08 09:27:24,268 INFO L290 TraceCheckUtils]: 6: Hoare triple {8184#true} assume ~main__tagbuf_len~0 >= 1;~main__t~0 := 0;~main__tagbuf_len~0 := ~main__tagbuf_len~0 - 1; {8184#true} is VALID [2022-04-08 09:27:24,268 INFO L290 TraceCheckUtils]: 7: Hoare triple {8184#true} assume !(~main__t~0 == ~main__tagbuf_len~0);havoc ~main____CPAchecker_TMP_0~0;assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~main____CPAchecker_TMP_0~0 := #t~nondet5;havoc #t~nondet5; {8184#true} is VALID [2022-04-08 09:27:24,269 INFO L290 TraceCheckUtils]: 8: Hoare triple {8184#true} assume !(0 == ~main____CPAchecker_TMP_0~0);havoc ~__tmp_1~0;~__tmp_1~0 := (if 0 <= ~main__t~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~0;~__VERIFIER_assert__cond~0 := ~__tmp_1~0; {8184#true} is VALID [2022-04-08 09:27:24,269 INFO L290 TraceCheckUtils]: 9: Hoare triple {8184#true} assume !(0 == ~__VERIFIER_assert__cond~0);havoc ~__tmp_2~0;~__tmp_2~0 := (if ~main__t~0 <= ~main__tagbuf_len~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~1;~__VERIFIER_assert__cond~1 := ~__tmp_2~0; {8184#true} is VALID [2022-04-08 09:27:24,269 INFO L290 TraceCheckUtils]: 10: Hoare triple {8184#true} assume !(0 == ~__VERIFIER_assert__cond~1);~__tmp_259_0~0 := ~main____CPAchecker_TMP_0~0; {8184#true} is VALID [2022-04-08 09:27:24,269 INFO L290 TraceCheckUtils]: 11: Hoare triple {8184#true} ~main____CPAchecker_TMP_0~0 := ~__tmp_259_0~0;~main____CPAchecker_TMP_2~0 := ~main__t~0;~main__t~0 := 1 + ~main__t~0; {8184#true} is VALID [2022-04-08 09:27:24,269 INFO L290 TraceCheckUtils]: 12: Hoare triple {8184#true} assume !(~main__t~0 == ~main__tagbuf_len~0);havoc ~main____CPAchecker_TMP_3~0;assume -2147483648 <= #t~nondet6 && #t~nondet6 <= 2147483647;~main____CPAchecker_TMP_3~0 := #t~nondet6;havoc #t~nondet6; {8184#true} is VALID [2022-04-08 09:27:24,269 INFO L290 TraceCheckUtils]: 13: Hoare triple {8184#true} assume !(0 == ~main____CPAchecker_TMP_3~0);havoc ~main____CPAchecker_TMP_4~0;assume -2147483648 <= #t~nondet7 && #t~nondet7 <= 2147483647;~main____CPAchecker_TMP_4~0 := #t~nondet7;havoc #t~nondet7; {8184#true} is VALID [2022-04-08 09:27:24,269 INFO L290 TraceCheckUtils]: 14: Hoare triple {8184#true} assume !(0 == ~main____CPAchecker_TMP_4~0);havoc ~__tmp_5~0;~__tmp_5~0 := (if 0 <= ~main__t~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~4;~__VERIFIER_assert__cond~4 := ~__tmp_5~0; {8184#true} is VALID [2022-04-08 09:27:24,269 INFO L290 TraceCheckUtils]: 15: Hoare triple {8184#true} assume !(0 == ~__VERIFIER_assert__cond~4);havoc ~__tmp_6~0;~__tmp_6~0 := (if ~main__t~0 <= ~main__tagbuf_len~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~5;~__VERIFIER_assert__cond~5 := ~__tmp_6~0; {8184#true} is VALID [2022-04-08 09:27:24,269 INFO L290 TraceCheckUtils]: 16: Hoare triple {8184#true} assume !(0 == ~__VERIFIER_assert__cond~5);~main____CPAchecker_TMP_5~0 := ~main__t~0;~main__t~0 := 1 + ~main__t~0; {8184#true} is VALID [2022-04-08 09:27:24,270 INFO L290 TraceCheckUtils]: 17: Hoare triple {8184#true} assume ~main__t~0 == ~main__tagbuf_len~0;havoc ~__tmp_7~0;~__tmp_7~0 := (if 0 <= ~main__t~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~6;~__VERIFIER_assert__cond~6 := ~__tmp_7~0; {8189#(<= main_~main__t~0 main_~main__tagbuf_len~0)} is VALID [2022-04-08 09:27:24,271 INFO L290 TraceCheckUtils]: 18: Hoare triple {8189#(<= main_~main__t~0 main_~main__tagbuf_len~0)} assume !(0 == ~__VERIFIER_assert__cond~6);havoc ~__tmp_8~0;~__tmp_8~0 := (if ~main__t~0 <= ~main__tagbuf_len~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~7;~__VERIFIER_assert__cond~7 := ~__tmp_8~0; {8190#(not (= main_~__VERIFIER_assert__cond~7 0))} is VALID [2022-04-08 09:27:24,271 INFO L290 TraceCheckUtils]: 19: Hoare triple {8190#(not (= main_~__VERIFIER_assert__cond~7 0))} assume 0 == ~__VERIFIER_assert__cond~7; {8185#false} is VALID [2022-04-08 09:27:24,271 INFO L290 TraceCheckUtils]: 20: Hoare triple {8185#false} assume !false; {8185#false} is VALID [2022-04-08 09:27:24,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-08 09:27:24,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 09:27:24,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395101488] [2022-04-08 09:27:24,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395101488] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 09:27:24,272 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 09:27:24,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-08 09:27:24,272 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 09:27:24,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1102978642] [2022-04-08 09:27:24,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1102978642] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 09:27:24,272 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 09:27:24,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-08 09:27:24,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666092212] [2022-04-08 09:27:24,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 09:27:24,272 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2022-04-08 09:27:24,272 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 09:27:24,273 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:24,285 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 21 edges. 21 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 09:27:24,285 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-08 09:27:24,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 09:27:24,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-08 09:27:24,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-08 09:27:24,286 INFO L87 Difference]: Start difference. First operand 64 states and 71 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:24,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 09:27:24,493 INFO L93 Difference]: Finished difference Result 64 states and 71 transitions. [2022-04-08 09:27:24,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-08 09:27:24,493 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2022-04-08 09:27:24,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 09:27:24,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:24,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 53 transitions. [2022-04-08 09:27:24,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:24,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 53 transitions. [2022-04-08 09:27:24,494 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 6 states and 53 transitions. [2022-04-08 09:27:24,522 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 53 edges. 53 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 09:27:24,523 INFO L225 Difference]: With dead ends: 64 [2022-04-08 09:27:24,523 INFO L226 Difference]: Without dead ends: 60 [2022-04-08 09:27:24,523 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-04-08 09:27:24,523 INFO L913 BasicCegarLoop]: 41 mSDtfsCounter, 15 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-08 09:27:24,524 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 101 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-08 09:27:24,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-04-08 09:27:24,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2022-04-08 09:27:24,604 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 09:27:24,604 INFO L82 GeneralOperation]: Start isEquivalent. First operand 60 states. Second operand has 60 states, 52 states have (on average 1.2307692307692308) internal successors, (64), 56 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:24,604 INFO L74 IsIncluded]: Start isIncluded. First operand 60 states. Second operand has 60 states, 52 states have (on average 1.2307692307692308) internal successors, (64), 56 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:24,604 INFO L87 Difference]: Start difference. First operand 60 states. Second operand has 60 states, 52 states have (on average 1.2307692307692308) internal successors, (64), 56 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:24,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 09:27:24,605 INFO L93 Difference]: Finished difference Result 60 states and 67 transitions. [2022-04-08 09:27:24,605 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 67 transitions. [2022-04-08 09:27:24,605 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 09:27:24,605 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 09:27:24,605 INFO L74 IsIncluded]: Start isIncluded. First operand has 60 states, 52 states have (on average 1.2307692307692308) internal successors, (64), 56 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 60 states. [2022-04-08 09:27:24,605 INFO L87 Difference]: Start difference. First operand has 60 states, 52 states have (on average 1.2307692307692308) internal successors, (64), 56 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 60 states. [2022-04-08 09:27:24,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 09:27:24,606 INFO L93 Difference]: Finished difference Result 60 states and 67 transitions. [2022-04-08 09:27:24,606 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 67 transitions. [2022-04-08 09:27:24,606 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 09:27:24,606 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 09:27:24,606 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 09:27:24,606 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 09:27:24,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 52 states have (on average 1.2307692307692308) internal successors, (64), 56 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:24,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 67 transitions. [2022-04-08 09:27:24,607 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 67 transitions. Word has length 21 [2022-04-08 09:27:24,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 09:27:24,607 INFO L478 AbstractCegarLoop]: Abstraction has 60 states and 67 transitions. [2022-04-08 09:27:24,607 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:24,607 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 60 states and 67 transitions. [2022-04-08 09:27:24,687 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 67 edges. 67 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 09:27:24,687 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 67 transitions. [2022-04-08 09:27:24,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-04-08 09:27:24,687 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 09:27:24,687 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 09:27:24,687 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-04-08 09:27:24,687 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr8ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-04-08 09:27:24,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 09:27:24,688 INFO L85 PathProgramCache]: Analyzing trace with hash 272309526, now seen corresponding path program 1 times [2022-04-08 09:27:24,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 09:27:24,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1998063718] [2022-04-08 09:27:24,688 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-08 09:27:24,688 INFO L85 PathProgramCache]: Analyzing trace with hash 272309526, now seen corresponding path program 2 times [2022-04-08 09:27:24,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 09:27:24,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464009942] [2022-04-08 09:27:24,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 09:27:24,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 09:27:24,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 09:27:24,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-08 09:27:24,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 09:27:24,745 INFO L290 TraceCheckUtils]: 0: Hoare triple {8576#(and (= |old(~__return_305~0)| ~__return_305~0) (= |old(~__tmp_259_0~0)| ~__tmp_259_0~0) (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__tmp_383_0~0)| ~__tmp_383_0~0) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(33, 2);call #Ultimate.allocInit(12, 3);~__return_main~0 := 0;~__tmp_259_0~0 := 0;~__return_305~0 := 0;~__tmp_383_0~0 := 0; {8567#true} is VALID [2022-04-08 09:27:24,745 INFO L290 TraceCheckUtils]: 1: Hoare triple {8567#true} assume true; {8567#true} is VALID [2022-04-08 09:27:24,745 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {8567#true} {8567#true} #191#return; {8567#true} is VALID [2022-04-08 09:27:24,745 INFO L272 TraceCheckUtils]: 0: Hoare triple {8567#true} call ULTIMATE.init(); {8576#(and (= |old(~__return_305~0)| ~__return_305~0) (= |old(~__tmp_259_0~0)| ~__tmp_259_0~0) (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__tmp_383_0~0)| ~__tmp_383_0~0) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-08 09:27:24,746 INFO L290 TraceCheckUtils]: 1: Hoare triple {8576#(and (= |old(~__return_305~0)| ~__return_305~0) (= |old(~__tmp_259_0~0)| ~__tmp_259_0~0) (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__tmp_383_0~0)| ~__tmp_383_0~0) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(33, 2);call #Ultimate.allocInit(12, 3);~__return_main~0 := 0;~__tmp_259_0~0 := 0;~__return_305~0 := 0;~__tmp_383_0~0 := 0; {8567#true} is VALID [2022-04-08 09:27:24,746 INFO L290 TraceCheckUtils]: 2: Hoare triple {8567#true} assume true; {8567#true} is VALID [2022-04-08 09:27:24,746 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {8567#true} {8567#true} #191#return; {8567#true} is VALID [2022-04-08 09:27:24,746 INFO L272 TraceCheckUtils]: 4: Hoare triple {8567#true} call #t~ret10 := main(); {8567#true} is VALID [2022-04-08 09:27:24,746 INFO L290 TraceCheckUtils]: 5: Hoare triple {8567#true} havoc ~main__tagbuf_len~0;havoc ~main__t~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~main__tagbuf_len~0 := #t~nondet4;havoc #t~nondet4; {8567#true} is VALID [2022-04-08 09:27:24,746 INFO L290 TraceCheckUtils]: 6: Hoare triple {8567#true} assume ~main__tagbuf_len~0 >= 1;~main__t~0 := 0;~main__tagbuf_len~0 := ~main__tagbuf_len~0 - 1; {8567#true} is VALID [2022-04-08 09:27:24,746 INFO L290 TraceCheckUtils]: 7: Hoare triple {8567#true} assume !(~main__t~0 == ~main__tagbuf_len~0);havoc ~main____CPAchecker_TMP_0~0;assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~main____CPAchecker_TMP_0~0 := #t~nondet5;havoc #t~nondet5; {8567#true} is VALID [2022-04-08 09:27:24,746 INFO L290 TraceCheckUtils]: 8: Hoare triple {8567#true} assume !(0 == ~main____CPAchecker_TMP_0~0);havoc ~__tmp_1~0;~__tmp_1~0 := (if 0 <= ~main__t~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~0;~__VERIFIER_assert__cond~0 := ~__tmp_1~0; {8567#true} is VALID [2022-04-08 09:27:24,746 INFO L290 TraceCheckUtils]: 9: Hoare triple {8567#true} assume !(0 == ~__VERIFIER_assert__cond~0);havoc ~__tmp_2~0;~__tmp_2~0 := (if ~main__t~0 <= ~main__tagbuf_len~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~1;~__VERIFIER_assert__cond~1 := ~__tmp_2~0; {8567#true} is VALID [2022-04-08 09:27:24,746 INFO L290 TraceCheckUtils]: 10: Hoare triple {8567#true} assume !(0 == ~__VERIFIER_assert__cond~1);~__tmp_259_0~0 := ~main____CPAchecker_TMP_0~0; {8567#true} is VALID [2022-04-08 09:27:24,746 INFO L290 TraceCheckUtils]: 11: Hoare triple {8567#true} ~main____CPAchecker_TMP_0~0 := ~__tmp_259_0~0;~main____CPAchecker_TMP_2~0 := ~main__t~0;~main__t~0 := 1 + ~main__t~0; {8567#true} is VALID [2022-04-08 09:27:24,747 INFO L290 TraceCheckUtils]: 12: Hoare triple {8567#true} assume !(~main__t~0 == ~main__tagbuf_len~0);havoc ~main____CPAchecker_TMP_3~0;assume -2147483648 <= #t~nondet6 && #t~nondet6 <= 2147483647;~main____CPAchecker_TMP_3~0 := #t~nondet6;havoc #t~nondet6; {8572#(not (= main_~main__tagbuf_len~0 main_~main__t~0))} is VALID [2022-04-08 09:27:24,747 INFO L290 TraceCheckUtils]: 13: Hoare triple {8572#(not (= main_~main__tagbuf_len~0 main_~main__t~0))} assume !(0 == ~main____CPAchecker_TMP_3~0);havoc ~main____CPAchecker_TMP_4~0;assume -2147483648 <= #t~nondet7 && #t~nondet7 <= 2147483647;~main____CPAchecker_TMP_4~0 := #t~nondet7;havoc #t~nondet7; {8572#(not (= main_~main__tagbuf_len~0 main_~main__t~0))} is VALID [2022-04-08 09:27:24,747 INFO L290 TraceCheckUtils]: 14: Hoare triple {8572#(not (= main_~main__tagbuf_len~0 main_~main__t~0))} assume !(0 == ~main____CPAchecker_TMP_4~0);havoc ~__tmp_5~0;~__tmp_5~0 := (if 0 <= ~main__t~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~4;~__VERIFIER_assert__cond~4 := ~__tmp_5~0; {8572#(not (= main_~main__tagbuf_len~0 main_~main__t~0))} is VALID [2022-04-08 09:27:24,748 INFO L290 TraceCheckUtils]: 15: Hoare triple {8572#(not (= main_~main__tagbuf_len~0 main_~main__t~0))} assume !(0 == ~__VERIFIER_assert__cond~4);havoc ~__tmp_6~0;~__tmp_6~0 := (if ~main__t~0 <= ~main__tagbuf_len~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~5;~__VERIFIER_assert__cond~5 := ~__tmp_6~0; {8573#(or (and (= main_~__VERIFIER_assert__cond~5 0) (not (<= main_~main__t~0 main_~main__tagbuf_len~0))) (not (<= main_~main__tagbuf_len~0 main_~main__t~0)))} is VALID [2022-04-08 09:27:24,748 INFO L290 TraceCheckUtils]: 16: Hoare triple {8573#(or (and (= main_~__VERIFIER_assert__cond~5 0) (not (<= main_~main__t~0 main_~main__tagbuf_len~0))) (not (<= main_~main__tagbuf_len~0 main_~main__t~0)))} assume !(0 == ~__VERIFIER_assert__cond~5);~main____CPAchecker_TMP_5~0 := ~main__t~0;~main__t~0 := 1 + ~main__t~0; {8574#(<= main_~main__t~0 main_~main__tagbuf_len~0)} is VALID [2022-04-08 09:27:24,748 INFO L290 TraceCheckUtils]: 17: Hoare triple {8574#(<= main_~main__t~0 main_~main__tagbuf_len~0)} assume !(~main__t~0 == ~main__tagbuf_len~0); {8574#(<= main_~main__t~0 main_~main__tagbuf_len~0)} is VALID [2022-04-08 09:27:24,749 INFO L290 TraceCheckUtils]: 18: Hoare triple {8574#(<= main_~main__t~0 main_~main__tagbuf_len~0)} havoc ~__tmp_9~0;~__tmp_9~0 := (if 0 <= ~main__t~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~8;~__VERIFIER_assert__cond~8 := ~__tmp_9~0; {8574#(<= main_~main__t~0 main_~main__tagbuf_len~0)} is VALID [2022-04-08 09:27:24,749 INFO L290 TraceCheckUtils]: 19: Hoare triple {8574#(<= main_~main__t~0 main_~main__tagbuf_len~0)} assume !(0 == ~__VERIFIER_assert__cond~8);havoc ~__tmp_10~0;~__tmp_10~0 := (if ~main__t~0 <= ~main__tagbuf_len~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~9;~__VERIFIER_assert__cond~9 := ~__tmp_10~0; {8575#(not (= main_~__VERIFIER_assert__cond~9 0))} is VALID [2022-04-08 09:27:24,749 INFO L290 TraceCheckUtils]: 20: Hoare triple {8575#(not (= main_~__VERIFIER_assert__cond~9 0))} assume 0 == ~__VERIFIER_assert__cond~9; {8568#false} is VALID [2022-04-08 09:27:24,749 INFO L290 TraceCheckUtils]: 21: Hoare triple {8568#false} assume !false; {8568#false} is VALID [2022-04-08 09:27:24,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-08 09:27:24,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 09:27:24,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464009942] [2022-04-08 09:27:24,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464009942] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 09:27:24,750 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 09:27:24,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-04-08 09:27:24,750 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 09:27:24,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1998063718] [2022-04-08 09:27:24,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1998063718] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 09:27:24,750 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 09:27:24,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-04-08 09:27:24,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003337283] [2022-04-08 09:27:24,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 09:27:24,751 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2022-04-08 09:27:24,751 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 09:27:24,751 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:24,765 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 22 edges. 22 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 09:27:24,765 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-04-08 09:27:24,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 09:27:24,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-04-08 09:27:24,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-04-08 09:27:24,766 INFO L87 Difference]: Start difference. First operand 60 states and 67 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:25,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 09:27:25,146 INFO L93 Difference]: Finished difference Result 75 states and 84 transitions. [2022-04-08 09:27:25,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-08 09:27:25,146 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2022-04-08 09:27:25,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 09:27:25,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:25,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 64 transitions. [2022-04-08 09:27:25,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:25,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 64 transitions. [2022-04-08 09:27:25,157 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 9 states and 64 transitions. [2022-04-08 09:27:25,201 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 64 edges. 64 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 09:27:25,202 INFO L225 Difference]: With dead ends: 75 [2022-04-08 09:27:25,202 INFO L226 Difference]: Without dead ends: 73 [2022-04-08 09:27:25,202 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-04-08 09:27:25,202 INFO L913 BasicCegarLoop]: 31 mSDtfsCounter, 84 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-08 09:27:25,203 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 67 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-08 09:27:25,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-04-08 09:27:25,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 55. [2022-04-08 09:27:25,310 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 09:27:25,310 INFO L82 GeneralOperation]: Start isEquivalent. First operand 73 states. Second operand has 55 states, 48 states have (on average 1.2291666666666667) internal successors, (59), 51 states have internal predecessors, (59), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:25,310 INFO L74 IsIncluded]: Start isIncluded. First operand 73 states. Second operand has 55 states, 48 states have (on average 1.2291666666666667) internal successors, (59), 51 states have internal predecessors, (59), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:25,311 INFO L87 Difference]: Start difference. First operand 73 states. Second operand has 55 states, 48 states have (on average 1.2291666666666667) internal successors, (59), 51 states have internal predecessors, (59), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:25,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 09:27:25,312 INFO L93 Difference]: Finished difference Result 73 states and 82 transitions. [2022-04-08 09:27:25,312 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 82 transitions. [2022-04-08 09:27:25,312 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 09:27:25,312 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 09:27:25,312 INFO L74 IsIncluded]: Start isIncluded. First operand has 55 states, 48 states have (on average 1.2291666666666667) internal successors, (59), 51 states have internal predecessors, (59), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 73 states. [2022-04-08 09:27:25,312 INFO L87 Difference]: Start difference. First operand has 55 states, 48 states have (on average 1.2291666666666667) internal successors, (59), 51 states have internal predecessors, (59), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 73 states. [2022-04-08 09:27:25,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 09:27:25,316 INFO L93 Difference]: Finished difference Result 73 states and 82 transitions. [2022-04-08 09:27:25,316 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 82 transitions. [2022-04-08 09:27:25,316 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 09:27:25,316 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 09:27:25,316 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 09:27:25,316 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 09:27:25,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 48 states have (on average 1.2291666666666667) internal successors, (59), 51 states have internal predecessors, (59), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:25,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 62 transitions. [2022-04-08 09:27:25,317 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 62 transitions. Word has length 22 [2022-04-08 09:27:25,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 09:27:25,317 INFO L478 AbstractCegarLoop]: Abstraction has 55 states and 62 transitions. [2022-04-08 09:27:25,317 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:25,317 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 55 states and 62 transitions. [2022-04-08 09:27:25,399 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 62 edges. 62 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 09:27:25,400 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 62 transitions. [2022-04-08 09:27:25,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-04-08 09:27:25,400 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 09:27:25,400 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 09:27:25,400 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-04-08 09:27:25,400 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr17ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-04-08 09:27:25,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 09:27:25,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1682587452, now seen corresponding path program 1 times [2022-04-08 09:27:25,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 09:27:25,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [864629016] [2022-04-08 09:27:25,401 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-08 09:27:25,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1682587452, now seen corresponding path program 2 times [2022-04-08 09:27:25,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 09:27:25,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300875839] [2022-04-08 09:27:25,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 09:27:25,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 09:27:25,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 09:27:25,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-08 09:27:25,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 09:27:25,471 INFO L290 TraceCheckUtils]: 0: Hoare triple {9007#(and (= |old(~__return_305~0)| ~__return_305~0) (= |old(~__tmp_259_0~0)| ~__tmp_259_0~0) (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__tmp_383_0~0)| ~__tmp_383_0~0) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(33, 2);call #Ultimate.allocInit(12, 3);~__return_main~0 := 0;~__tmp_259_0~0 := 0;~__return_305~0 := 0;~__tmp_383_0~0 := 0; {8997#true} is VALID [2022-04-08 09:27:25,471 INFO L290 TraceCheckUtils]: 1: Hoare triple {8997#true} assume true; {8997#true} is VALID [2022-04-08 09:27:25,472 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {8997#true} {8997#true} #191#return; {8997#true} is VALID [2022-04-08 09:27:25,475 INFO L272 TraceCheckUtils]: 0: Hoare triple {8997#true} call ULTIMATE.init(); {9007#(and (= |old(~__return_305~0)| ~__return_305~0) (= |old(~__tmp_259_0~0)| ~__tmp_259_0~0) (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__tmp_383_0~0)| ~__tmp_383_0~0) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-08 09:27:25,475 INFO L290 TraceCheckUtils]: 1: Hoare triple {9007#(and (= |old(~__return_305~0)| ~__return_305~0) (= |old(~__tmp_259_0~0)| ~__tmp_259_0~0) (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__tmp_383_0~0)| ~__tmp_383_0~0) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(33, 2);call #Ultimate.allocInit(12, 3);~__return_main~0 := 0;~__tmp_259_0~0 := 0;~__return_305~0 := 0;~__tmp_383_0~0 := 0; {8997#true} is VALID [2022-04-08 09:27:25,475 INFO L290 TraceCheckUtils]: 2: Hoare triple {8997#true} assume true; {8997#true} is VALID [2022-04-08 09:27:25,475 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {8997#true} {8997#true} #191#return; {8997#true} is VALID [2022-04-08 09:27:25,475 INFO L272 TraceCheckUtils]: 4: Hoare triple {8997#true} call #t~ret10 := main(); {8997#true} is VALID [2022-04-08 09:27:25,475 INFO L290 TraceCheckUtils]: 5: Hoare triple {8997#true} havoc ~main__tagbuf_len~0;havoc ~main__t~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~main__tagbuf_len~0 := #t~nondet4;havoc #t~nondet4; {8997#true} is VALID [2022-04-08 09:27:25,476 INFO L290 TraceCheckUtils]: 6: Hoare triple {8997#true} assume ~main__tagbuf_len~0 >= 1;~main__t~0 := 0;~main__tagbuf_len~0 := ~main__tagbuf_len~0 - 1; {8997#true} is VALID [2022-04-08 09:27:25,476 INFO L290 TraceCheckUtils]: 7: Hoare triple {8997#true} assume !(~main__t~0 == ~main__tagbuf_len~0);havoc ~main____CPAchecker_TMP_0~0;assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~main____CPAchecker_TMP_0~0 := #t~nondet5;havoc #t~nondet5; {8997#true} is VALID [2022-04-08 09:27:25,476 INFO L290 TraceCheckUtils]: 8: Hoare triple {8997#true} assume !!(0 == ~main____CPAchecker_TMP_0~0);havoc ~__tmp_13~0;~__tmp_13~0 := (if 0 <= ~main__t~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~12;~__VERIFIER_assert__cond~12 := ~__tmp_13~0; {8997#true} is VALID [2022-04-08 09:27:25,476 INFO L290 TraceCheckUtils]: 9: Hoare triple {8997#true} assume !(0 == ~__VERIFIER_assert__cond~12);havoc ~__tmp_14~0;~__tmp_14~0 := (if ~main__t~0 <= ~main__tagbuf_len~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~13;~__VERIFIER_assert__cond~13 := ~__tmp_14~0; {8997#true} is VALID [2022-04-08 09:27:25,476 INFO L290 TraceCheckUtils]: 10: Hoare triple {8997#true} assume !(0 == ~__VERIFIER_assert__cond~13);~__tmp_383_0~0 := ~main____CPAchecker_TMP_0~0; {8997#true} is VALID [2022-04-08 09:27:25,476 INFO L290 TraceCheckUtils]: 11: Hoare triple {8997#true} ~main____CPAchecker_TMP_0~0 := ~__tmp_383_0~0;~main____CPAchecker_TMP_1~0 := ~main__t~0;~main__t~0 := 1 + ~main__t~0; {8997#true} is VALID [2022-04-08 09:27:25,486 INFO L290 TraceCheckUtils]: 12: Hoare triple {8997#true} assume !(~main__t~0 == ~main__tagbuf_len~0);havoc ~main____CPAchecker_TMP_0~1;assume -2147483648 <= #t~nondet9 && #t~nondet9 <= 2147483647;~main____CPAchecker_TMP_0~1 := #t~nondet9;havoc #t~nondet9; {9002#(not (= main_~main__tagbuf_len~0 main_~main__t~0))} is VALID [2022-04-08 09:27:25,487 INFO L290 TraceCheckUtils]: 13: Hoare triple {9002#(not (= main_~main__tagbuf_len~0 main_~main__t~0))} assume !!(0 == ~main____CPAchecker_TMP_0~1);havoc ~__tmp_19~0;~__tmp_19~0 := (if 0 <= ~main__t~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~18;~__VERIFIER_assert__cond~18 := ~__tmp_19~0; {9002#(not (= main_~main__tagbuf_len~0 main_~main__t~0))} is VALID [2022-04-08 09:27:25,487 INFO L290 TraceCheckUtils]: 14: Hoare triple {9002#(not (= main_~main__tagbuf_len~0 main_~main__t~0))} assume !(0 == ~__VERIFIER_assert__cond~18);havoc ~__tmp_20~0;~__tmp_20~0 := (if ~main__t~0 <= ~main__tagbuf_len~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~19;~__VERIFIER_assert__cond~19 := ~__tmp_20~0; {9003#(or (and (= main_~__VERIFIER_assert__cond~19 0) (not (<= main_~main__t~0 main_~main__tagbuf_len~0))) (not (<= main_~main__tagbuf_len~0 main_~main__t~0)))} is VALID [2022-04-08 09:27:25,488 INFO L290 TraceCheckUtils]: 15: Hoare triple {9003#(or (and (= main_~__VERIFIER_assert__cond~19 0) (not (<= main_~main__t~0 main_~main__tagbuf_len~0))) (not (<= main_~main__tagbuf_len~0 main_~main__t~0)))} assume !(0 == ~__VERIFIER_assert__cond~19);~__tmp_383_0~0 := ~main____CPAchecker_TMP_0~1; {9004#(not (<= main_~main__tagbuf_len~0 main_~main__t~0))} is VALID [2022-04-08 09:27:25,488 INFO L290 TraceCheckUtils]: 16: Hoare triple {9004#(not (<= main_~main__tagbuf_len~0 main_~main__t~0))} ~main____CPAchecker_TMP_0~0 := ~__tmp_383_0~0;~main____CPAchecker_TMP_1~0 := ~main__t~0;~main__t~0 := 1 + ~main__t~0; {9005#(<= main_~main__t~0 main_~main__tagbuf_len~0)} is VALID [2022-04-08 09:27:25,488 INFO L290 TraceCheckUtils]: 17: Hoare triple {9005#(<= main_~main__t~0 main_~main__tagbuf_len~0)} assume !(~main__t~0 == ~main__tagbuf_len~0);havoc ~main____CPAchecker_TMP_0~1;assume -2147483648 <= #t~nondet9 && #t~nondet9 <= 2147483647;~main____CPAchecker_TMP_0~1 := #t~nondet9;havoc #t~nondet9; {9005#(<= main_~main__t~0 main_~main__tagbuf_len~0)} is VALID [2022-04-08 09:27:25,489 INFO L290 TraceCheckUtils]: 18: Hoare triple {9005#(<= main_~main__t~0 main_~main__tagbuf_len~0)} assume !!(0 == ~main____CPAchecker_TMP_0~1);havoc ~__tmp_19~0;~__tmp_19~0 := (if 0 <= ~main__t~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~18;~__VERIFIER_assert__cond~18 := ~__tmp_19~0; {9005#(<= main_~main__t~0 main_~main__tagbuf_len~0)} is VALID [2022-04-08 09:27:25,489 INFO L290 TraceCheckUtils]: 19: Hoare triple {9005#(<= main_~main__t~0 main_~main__tagbuf_len~0)} assume !(0 == ~__VERIFIER_assert__cond~18);havoc ~__tmp_20~0;~__tmp_20~0 := (if ~main__t~0 <= ~main__tagbuf_len~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~19;~__VERIFIER_assert__cond~19 := ~__tmp_20~0; {9006#(not (= main_~__VERIFIER_assert__cond~19 0))} is VALID [2022-04-08 09:27:25,489 INFO L290 TraceCheckUtils]: 20: Hoare triple {9006#(not (= main_~__VERIFIER_assert__cond~19 0))} assume 0 == ~__VERIFIER_assert__cond~19; {8998#false} is VALID [2022-04-08 09:27:25,489 INFO L290 TraceCheckUtils]: 21: Hoare triple {8998#false} assume !false; {8998#false} is VALID [2022-04-08 09:27:25,489 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-08 09:27:25,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 09:27:25,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300875839] [2022-04-08 09:27:25,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300875839] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-08 09:27:25,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [278314675] [2022-04-08 09:27:25,490 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-08 09:27:25,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-08 09:27:25,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-08 09:27:25,491 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-08 09:27:25,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-08 09:27:25,552 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-08 09:27:25,553 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-08 09:27:25,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 10 conjunts are in the unsatisfiable core [2022-04-08 09:27:25,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 09:27:25,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-08 09:27:26,121 INFO L272 TraceCheckUtils]: 0: Hoare triple {8997#true} call ULTIMATE.init(); {8997#true} is VALID [2022-04-08 09:27:26,121 INFO L290 TraceCheckUtils]: 1: Hoare triple {8997#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(33, 2);call #Ultimate.allocInit(12, 3);~__return_main~0 := 0;~__tmp_259_0~0 := 0;~__return_305~0 := 0;~__tmp_383_0~0 := 0; {8997#true} is VALID [2022-04-08 09:27:26,121 INFO L290 TraceCheckUtils]: 2: Hoare triple {8997#true} assume true; {8997#true} is VALID [2022-04-08 09:27:26,121 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {8997#true} {8997#true} #191#return; {8997#true} is VALID [2022-04-08 09:27:26,121 INFO L272 TraceCheckUtils]: 4: Hoare triple {8997#true} call #t~ret10 := main(); {8997#true} is VALID [2022-04-08 09:27:26,121 INFO L290 TraceCheckUtils]: 5: Hoare triple {8997#true} havoc ~main__tagbuf_len~0;havoc ~main__t~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~main__tagbuf_len~0 := #t~nondet4;havoc #t~nondet4; {8997#true} is VALID [2022-04-08 09:27:26,121 INFO L290 TraceCheckUtils]: 6: Hoare triple {8997#true} assume ~main__tagbuf_len~0 >= 1;~main__t~0 := 0;~main__tagbuf_len~0 := ~main__tagbuf_len~0 - 1; {9029#(and (<= 0 main_~main__tagbuf_len~0) (<= main_~main__t~0 0))} is VALID [2022-04-08 09:27:26,122 INFO L290 TraceCheckUtils]: 7: Hoare triple {9029#(and (<= 0 main_~main__tagbuf_len~0) (<= main_~main__t~0 0))} assume !(~main__t~0 == ~main__tagbuf_len~0);havoc ~main____CPAchecker_TMP_0~0;assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~main____CPAchecker_TMP_0~0 := #t~nondet5;havoc #t~nondet5; {9033#(and (<= 0 main_~main__tagbuf_len~0) (not (= main_~main__tagbuf_len~0 main_~main__t~0)) (<= main_~main__t~0 0))} is VALID [2022-04-08 09:27:26,122 INFO L290 TraceCheckUtils]: 8: Hoare triple {9033#(and (<= 0 main_~main__tagbuf_len~0) (not (= main_~main__tagbuf_len~0 main_~main__t~0)) (<= main_~main__t~0 0))} assume !!(0 == ~main____CPAchecker_TMP_0~0);havoc ~__tmp_13~0;~__tmp_13~0 := (if 0 <= ~main__t~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~12;~__VERIFIER_assert__cond~12 := ~__tmp_13~0; {9033#(and (<= 0 main_~main__tagbuf_len~0) (not (= main_~main__tagbuf_len~0 main_~main__t~0)) (<= main_~main__t~0 0))} is VALID [2022-04-08 09:27:26,123 INFO L290 TraceCheckUtils]: 9: Hoare triple {9033#(and (<= 0 main_~main__tagbuf_len~0) (not (= main_~main__tagbuf_len~0 main_~main__t~0)) (<= main_~main__t~0 0))} assume !(0 == ~__VERIFIER_assert__cond~12);havoc ~__tmp_14~0;~__tmp_14~0 := (if ~main__t~0 <= ~main__tagbuf_len~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~13;~__VERIFIER_assert__cond~13 := ~__tmp_14~0; {9033#(and (<= 0 main_~main__tagbuf_len~0) (not (= main_~main__tagbuf_len~0 main_~main__t~0)) (<= main_~main__t~0 0))} is VALID [2022-04-08 09:27:26,123 INFO L290 TraceCheckUtils]: 10: Hoare triple {9033#(and (<= 0 main_~main__tagbuf_len~0) (not (= main_~main__tagbuf_len~0 main_~main__t~0)) (<= main_~main__t~0 0))} assume !(0 == ~__VERIFIER_assert__cond~13);~__tmp_383_0~0 := ~main____CPAchecker_TMP_0~0; {9033#(and (<= 0 main_~main__tagbuf_len~0) (not (= main_~main__tagbuf_len~0 main_~main__t~0)) (<= main_~main__t~0 0))} is VALID [2022-04-08 09:27:26,123 INFO L290 TraceCheckUtils]: 11: Hoare triple {9033#(and (<= 0 main_~main__tagbuf_len~0) (not (= main_~main__tagbuf_len~0 main_~main__t~0)) (<= main_~main__t~0 0))} ~main____CPAchecker_TMP_0~0 := ~__tmp_383_0~0;~main____CPAchecker_TMP_1~0 := ~main__t~0;~main__t~0 := 1 + ~main__t~0; {9046#(and (<= main_~main__t~0 1) (< main_~main__t~0 (+ main_~main__tagbuf_len~0 1)) (<= 0 main_~main__tagbuf_len~0))} is VALID [2022-04-08 09:27:26,124 INFO L290 TraceCheckUtils]: 12: Hoare triple {9046#(and (<= main_~main__t~0 1) (< main_~main__t~0 (+ main_~main__tagbuf_len~0 1)) (<= 0 main_~main__tagbuf_len~0))} assume !(~main__t~0 == ~main__tagbuf_len~0);havoc ~main____CPAchecker_TMP_0~1;assume -2147483648 <= #t~nondet9 && #t~nondet9 <= 2147483647;~main____CPAchecker_TMP_0~1 := #t~nondet9;havoc #t~nondet9; {9050#(and (<= main_~main__t~0 1) (< main_~main__t~0 (+ main_~main__tagbuf_len~0 1)) (<= 0 main_~main__tagbuf_len~0) (not (= main_~main__tagbuf_len~0 main_~main__t~0)))} is VALID [2022-04-08 09:27:26,124 INFO L290 TraceCheckUtils]: 13: Hoare triple {9050#(and (<= main_~main__t~0 1) (< main_~main__t~0 (+ main_~main__tagbuf_len~0 1)) (<= 0 main_~main__tagbuf_len~0) (not (= main_~main__tagbuf_len~0 main_~main__t~0)))} assume !!(0 == ~main____CPAchecker_TMP_0~1);havoc ~__tmp_19~0;~__tmp_19~0 := (if 0 <= ~main__t~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~18;~__VERIFIER_assert__cond~18 := ~__tmp_19~0; {9050#(and (<= main_~main__t~0 1) (< main_~main__t~0 (+ main_~main__tagbuf_len~0 1)) (<= 0 main_~main__tagbuf_len~0) (not (= main_~main__tagbuf_len~0 main_~main__t~0)))} is VALID [2022-04-08 09:27:26,125 INFO L290 TraceCheckUtils]: 14: Hoare triple {9050#(and (<= main_~main__t~0 1) (< main_~main__t~0 (+ main_~main__tagbuf_len~0 1)) (<= 0 main_~main__tagbuf_len~0) (not (= main_~main__tagbuf_len~0 main_~main__t~0)))} assume !(0 == ~__VERIFIER_assert__cond~18);havoc ~__tmp_20~0;~__tmp_20~0 := (if ~main__t~0 <= ~main__tagbuf_len~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~19;~__VERIFIER_assert__cond~19 := ~__tmp_20~0; {9050#(and (<= main_~main__t~0 1) (< main_~main__t~0 (+ main_~main__tagbuf_len~0 1)) (<= 0 main_~main__tagbuf_len~0) (not (= main_~main__tagbuf_len~0 main_~main__t~0)))} is VALID [2022-04-08 09:27:26,125 INFO L290 TraceCheckUtils]: 15: Hoare triple {9050#(and (<= main_~main__t~0 1) (< main_~main__t~0 (+ main_~main__tagbuf_len~0 1)) (<= 0 main_~main__tagbuf_len~0) (not (= main_~main__tagbuf_len~0 main_~main__t~0)))} assume !(0 == ~__VERIFIER_assert__cond~19);~__tmp_383_0~0 := ~main____CPAchecker_TMP_0~1; {9050#(and (<= main_~main__t~0 1) (< main_~main__t~0 (+ main_~main__tagbuf_len~0 1)) (<= 0 main_~main__tagbuf_len~0) (not (= main_~main__tagbuf_len~0 main_~main__t~0)))} is VALID [2022-04-08 09:27:26,125 INFO L290 TraceCheckUtils]: 16: Hoare triple {9050#(and (<= main_~main__t~0 1) (< main_~main__t~0 (+ main_~main__tagbuf_len~0 1)) (<= 0 main_~main__tagbuf_len~0) (not (= main_~main__tagbuf_len~0 main_~main__t~0)))} ~main____CPAchecker_TMP_0~0 := ~__tmp_383_0~0;~main____CPAchecker_TMP_1~0 := ~main__t~0;~main__t~0 := 1 + ~main__t~0; {9063#(and (<= main_~main__t~0 2) (< main_~main__t~0 (+ main_~main__tagbuf_len~0 1)) (<= 0 main_~main__tagbuf_len~0))} is VALID [2022-04-08 09:27:26,126 INFO L290 TraceCheckUtils]: 17: Hoare triple {9063#(and (<= main_~main__t~0 2) (< main_~main__t~0 (+ main_~main__tagbuf_len~0 1)) (<= 0 main_~main__tagbuf_len~0))} assume !(~main__t~0 == ~main__tagbuf_len~0);havoc ~main____CPAchecker_TMP_0~1;assume -2147483648 <= #t~nondet9 && #t~nondet9 <= 2147483647;~main____CPAchecker_TMP_0~1 := #t~nondet9;havoc #t~nondet9; {9063#(and (<= main_~main__t~0 2) (< main_~main__t~0 (+ main_~main__tagbuf_len~0 1)) (<= 0 main_~main__tagbuf_len~0))} is VALID [2022-04-08 09:27:26,126 INFO L290 TraceCheckUtils]: 18: Hoare triple {9063#(and (<= main_~main__t~0 2) (< main_~main__t~0 (+ main_~main__tagbuf_len~0 1)) (<= 0 main_~main__tagbuf_len~0))} assume !!(0 == ~main____CPAchecker_TMP_0~1);havoc ~__tmp_19~0;~__tmp_19~0 := (if 0 <= ~main__t~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~18;~__VERIFIER_assert__cond~18 := ~__tmp_19~0; {9063#(and (<= main_~main__t~0 2) (< main_~main__t~0 (+ main_~main__tagbuf_len~0 1)) (<= 0 main_~main__tagbuf_len~0))} is VALID [2022-04-08 09:27:26,127 INFO L290 TraceCheckUtils]: 19: Hoare triple {9063#(and (<= main_~main__t~0 2) (< main_~main__t~0 (+ main_~main__tagbuf_len~0 1)) (<= 0 main_~main__tagbuf_len~0))} assume !(0 == ~__VERIFIER_assert__cond~18);havoc ~__tmp_20~0;~__tmp_20~0 := (if ~main__t~0 <= ~main__tagbuf_len~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~19;~__VERIFIER_assert__cond~19 := ~__tmp_20~0; {9073#(<= 1 main_~__VERIFIER_assert__cond~19)} is VALID [2022-04-08 09:27:26,127 INFO L290 TraceCheckUtils]: 20: Hoare triple {9073#(<= 1 main_~__VERIFIER_assert__cond~19)} assume 0 == ~__VERIFIER_assert__cond~19; {8998#false} is VALID [2022-04-08 09:27:26,127 INFO L290 TraceCheckUtils]: 21: Hoare triple {8998#false} assume !false; {8998#false} is VALID [2022-04-08 09:27:26,127 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-08 09:27:26,127 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-08 09:27:26,264 INFO L290 TraceCheckUtils]: 21: Hoare triple {8998#false} assume !false; {8998#false} is VALID [2022-04-08 09:27:26,264 INFO L290 TraceCheckUtils]: 20: Hoare triple {9073#(<= 1 main_~__VERIFIER_assert__cond~19)} assume 0 == ~__VERIFIER_assert__cond~19; {8998#false} is VALID [2022-04-08 09:27:26,264 INFO L290 TraceCheckUtils]: 19: Hoare triple {9005#(<= main_~main__t~0 main_~main__tagbuf_len~0)} assume !(0 == ~__VERIFIER_assert__cond~18);havoc ~__tmp_20~0;~__tmp_20~0 := (if ~main__t~0 <= ~main__tagbuf_len~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~19;~__VERIFIER_assert__cond~19 := ~__tmp_20~0; {9073#(<= 1 main_~__VERIFIER_assert__cond~19)} is VALID [2022-04-08 09:27:26,265 INFO L290 TraceCheckUtils]: 18: Hoare triple {9005#(<= main_~main__t~0 main_~main__tagbuf_len~0)} assume !!(0 == ~main____CPAchecker_TMP_0~1);havoc ~__tmp_19~0;~__tmp_19~0 := (if 0 <= ~main__t~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~18;~__VERIFIER_assert__cond~18 := ~__tmp_19~0; {9005#(<= main_~main__t~0 main_~main__tagbuf_len~0)} is VALID [2022-04-08 09:27:26,265 INFO L290 TraceCheckUtils]: 17: Hoare triple {9005#(<= main_~main__t~0 main_~main__tagbuf_len~0)} assume !(~main__t~0 == ~main__tagbuf_len~0);havoc ~main____CPAchecker_TMP_0~1;assume -2147483648 <= #t~nondet9 && #t~nondet9 <= 2147483647;~main____CPAchecker_TMP_0~1 := #t~nondet9;havoc #t~nondet9; {9005#(<= main_~main__t~0 main_~main__tagbuf_len~0)} is VALID [2022-04-08 09:27:26,265 INFO L290 TraceCheckUtils]: 16: Hoare triple {9004#(not (<= main_~main__tagbuf_len~0 main_~main__t~0))} ~main____CPAchecker_TMP_0~0 := ~__tmp_383_0~0;~main____CPAchecker_TMP_1~0 := ~main__t~0;~main__t~0 := 1 + ~main__t~0; {9005#(<= main_~main__t~0 main_~main__tagbuf_len~0)} is VALID [2022-04-08 09:27:26,266 INFO L290 TraceCheckUtils]: 15: Hoare triple {9004#(not (<= main_~main__tagbuf_len~0 main_~main__t~0))} assume !(0 == ~__VERIFIER_assert__cond~19);~__tmp_383_0~0 := ~main____CPAchecker_TMP_0~1; {9004#(not (<= main_~main__tagbuf_len~0 main_~main__t~0))} is VALID [2022-04-08 09:27:26,266 INFO L290 TraceCheckUtils]: 14: Hoare triple {9004#(not (<= main_~main__tagbuf_len~0 main_~main__t~0))} assume !(0 == ~__VERIFIER_assert__cond~18);havoc ~__tmp_20~0;~__tmp_20~0 := (if ~main__t~0 <= ~main__tagbuf_len~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~19;~__VERIFIER_assert__cond~19 := ~__tmp_20~0; {9004#(not (<= main_~main__tagbuf_len~0 main_~main__t~0))} is VALID [2022-04-08 09:27:26,266 INFO L290 TraceCheckUtils]: 13: Hoare triple {9004#(not (<= main_~main__tagbuf_len~0 main_~main__t~0))} assume !!(0 == ~main____CPAchecker_TMP_0~1);havoc ~__tmp_19~0;~__tmp_19~0 := (if 0 <= ~main__t~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~18;~__VERIFIER_assert__cond~18 := ~__tmp_19~0; {9004#(not (<= main_~main__tagbuf_len~0 main_~main__t~0))} is VALID [2022-04-08 09:27:26,267 INFO L290 TraceCheckUtils]: 12: Hoare triple {9005#(<= main_~main__t~0 main_~main__tagbuf_len~0)} assume !(~main__t~0 == ~main__tagbuf_len~0);havoc ~main____CPAchecker_TMP_0~1;assume -2147483648 <= #t~nondet9 && #t~nondet9 <= 2147483647;~main____CPAchecker_TMP_0~1 := #t~nondet9;havoc #t~nondet9; {9004#(not (<= main_~main__tagbuf_len~0 main_~main__t~0))} is VALID [2022-04-08 09:27:26,267 INFO L290 TraceCheckUtils]: 11: Hoare triple {9004#(not (<= main_~main__tagbuf_len~0 main_~main__t~0))} ~main____CPAchecker_TMP_0~0 := ~__tmp_383_0~0;~main____CPAchecker_TMP_1~0 := ~main__t~0;~main__t~0 := 1 + ~main__t~0; {9005#(<= main_~main__t~0 main_~main__tagbuf_len~0)} is VALID [2022-04-08 09:27:26,267 INFO L290 TraceCheckUtils]: 10: Hoare triple {9004#(not (<= main_~main__tagbuf_len~0 main_~main__t~0))} assume !(0 == ~__VERIFIER_assert__cond~13);~__tmp_383_0~0 := ~main____CPAchecker_TMP_0~0; {9004#(not (<= main_~main__tagbuf_len~0 main_~main__t~0))} is VALID [2022-04-08 09:27:26,268 INFO L290 TraceCheckUtils]: 9: Hoare triple {9004#(not (<= main_~main__tagbuf_len~0 main_~main__t~0))} assume !(0 == ~__VERIFIER_assert__cond~12);havoc ~__tmp_14~0;~__tmp_14~0 := (if ~main__t~0 <= ~main__tagbuf_len~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~13;~__VERIFIER_assert__cond~13 := ~__tmp_14~0; {9004#(not (<= main_~main__tagbuf_len~0 main_~main__t~0))} is VALID [2022-04-08 09:27:26,268 INFO L290 TraceCheckUtils]: 8: Hoare triple {9004#(not (<= main_~main__tagbuf_len~0 main_~main__t~0))} assume !!(0 == ~main____CPAchecker_TMP_0~0);havoc ~__tmp_13~0;~__tmp_13~0 := (if 0 <= ~main__t~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~12;~__VERIFIER_assert__cond~12 := ~__tmp_13~0; {9004#(not (<= main_~main__tagbuf_len~0 main_~main__t~0))} is VALID [2022-04-08 09:27:26,268 INFO L290 TraceCheckUtils]: 7: Hoare triple {9005#(<= main_~main__t~0 main_~main__tagbuf_len~0)} assume !(~main__t~0 == ~main__tagbuf_len~0);havoc ~main____CPAchecker_TMP_0~0;assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~main____CPAchecker_TMP_0~0 := #t~nondet5;havoc #t~nondet5; {9004#(not (<= main_~main__tagbuf_len~0 main_~main__t~0))} is VALID [2022-04-08 09:27:26,269 INFO L290 TraceCheckUtils]: 6: Hoare triple {8997#true} assume ~main__tagbuf_len~0 >= 1;~main__t~0 := 0;~main__tagbuf_len~0 := ~main__tagbuf_len~0 - 1; {9005#(<= main_~main__t~0 main_~main__tagbuf_len~0)} is VALID [2022-04-08 09:27:26,269 INFO L290 TraceCheckUtils]: 5: Hoare triple {8997#true} havoc ~main__tagbuf_len~0;havoc ~main__t~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~main__tagbuf_len~0 := #t~nondet4;havoc #t~nondet4; {8997#true} is VALID [2022-04-08 09:27:26,269 INFO L272 TraceCheckUtils]: 4: Hoare triple {8997#true} call #t~ret10 := main(); {8997#true} is VALID [2022-04-08 09:27:26,269 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {8997#true} {8997#true} #191#return; {8997#true} is VALID [2022-04-08 09:27:26,269 INFO L290 TraceCheckUtils]: 2: Hoare triple {8997#true} assume true; {8997#true} is VALID [2022-04-08 09:27:26,269 INFO L290 TraceCheckUtils]: 1: Hoare triple {8997#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(33, 2);call #Ultimate.allocInit(12, 3);~__return_main~0 := 0;~__tmp_259_0~0 := 0;~__return_305~0 := 0;~__tmp_383_0~0 := 0; {8997#true} is VALID [2022-04-08 09:27:26,269 INFO L272 TraceCheckUtils]: 0: Hoare triple {8997#true} call ULTIMATE.init(); {8997#true} is VALID [2022-04-08 09:27:26,269 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-04-08 09:27:26,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [278314675] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-08 09:27:26,269 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-08 09:27:26,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 5] total 14 [2022-04-08 09:27:26,270 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 09:27:26,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [864629016] [2022-04-08 09:27:26,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [864629016] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 09:27:26,270 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 09:27:26,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-08 09:27:26,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805505137] [2022-04-08 09:27:26,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 09:27:26,272 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2022-04-08 09:27:26,272 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 09:27:26,272 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:26,285 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 22 edges. 22 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 09:27:26,285 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-08 09:27:26,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 09:27:26,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-08 09:27:26,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-04-08 09:27:26,286 INFO L87 Difference]: Start difference. First operand 55 states and 62 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:26,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 09:27:26,697 INFO L93 Difference]: Finished difference Result 72 states and 81 transitions. [2022-04-08 09:27:26,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-08 09:27:26,697 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2022-04-08 09:27:26,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 09:27:26,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:26,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 71 transitions. [2022-04-08 09:27:26,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:26,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 71 transitions. [2022-04-08 09:27:26,698 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 9 states and 71 transitions. [2022-04-08 09:27:26,746 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 71 edges. 71 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 09:27:26,746 INFO L225 Difference]: With dead ends: 72 [2022-04-08 09:27:26,746 INFO L226 Difference]: Without dead ends: 70 [2022-04-08 09:27:26,747 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 37 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2022-04-08 09:27:26,747 INFO L913 BasicCegarLoop]: 29 mSDtfsCounter, 116 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-08 09:27:26,747 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 60 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-08 09:27:26,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-04-08 09:27:26,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 51. [2022-04-08 09:27:26,846 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 09:27:26,847 INFO L82 GeneralOperation]: Start isEquivalent. First operand 70 states. Second operand has 51 states, 45 states have (on average 1.2222222222222223) internal successors, (55), 47 states have internal predecessors, (55), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:26,847 INFO L74 IsIncluded]: Start isIncluded. First operand 70 states. Second operand has 51 states, 45 states have (on average 1.2222222222222223) internal successors, (55), 47 states have internal predecessors, (55), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:26,847 INFO L87 Difference]: Start difference. First operand 70 states. Second operand has 51 states, 45 states have (on average 1.2222222222222223) internal successors, (55), 47 states have internal predecessors, (55), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:26,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 09:27:26,848 INFO L93 Difference]: Finished difference Result 70 states and 79 transitions. [2022-04-08 09:27:26,848 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 79 transitions. [2022-04-08 09:27:26,848 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 09:27:26,848 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 09:27:26,848 INFO L74 IsIncluded]: Start isIncluded. First operand has 51 states, 45 states have (on average 1.2222222222222223) internal successors, (55), 47 states have internal predecessors, (55), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 70 states. [2022-04-08 09:27:26,848 INFO L87 Difference]: Start difference. First operand has 51 states, 45 states have (on average 1.2222222222222223) internal successors, (55), 47 states have internal predecessors, (55), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 70 states. [2022-04-08 09:27:26,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 09:27:26,849 INFO L93 Difference]: Finished difference Result 70 states and 79 transitions. [2022-04-08 09:27:26,849 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 79 transitions. [2022-04-08 09:27:26,849 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 09:27:26,849 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 09:27:26,849 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 09:27:26,849 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 09:27:26,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 45 states have (on average 1.2222222222222223) internal successors, (55), 47 states have internal predecessors, (55), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:26,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 58 transitions. [2022-04-08 09:27:26,850 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 58 transitions. Word has length 22 [2022-04-08 09:27:26,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 09:27:26,850 INFO L478 AbstractCegarLoop]: Abstraction has 51 states and 58 transitions. [2022-04-08 09:27:26,850 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:26,850 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 51 states and 58 transitions. [2022-04-08 09:27:26,920 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 58 edges. 58 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 09:27:26,920 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 58 transitions. [2022-04-08 09:27:26,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-04-08 09:27:26,920 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 09:27:26,920 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 09:27:26,939 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-04-08 09:27:27,135 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-08 09:27:27,135 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr15ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-04-08 09:27:27,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 09:27:27,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1683018428, now seen corresponding path program 1 times [2022-04-08 09:27:27,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 09:27:27,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [51415585] [2022-04-08 09:27:27,136 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-08 09:27:27,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1683018428, now seen corresponding path program 2 times [2022-04-08 09:27:27,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 09:27:27,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903310256] [2022-04-08 09:27:27,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 09:27:27,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 09:27:27,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 09:27:27,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-08 09:27:27,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 09:27:27,222 INFO L290 TraceCheckUtils]: 0: Hoare triple {9551#(and (= |old(~__return_305~0)| ~__return_305~0) (= |old(~__tmp_259_0~0)| ~__tmp_259_0~0) (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__tmp_383_0~0)| ~__tmp_383_0~0) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(33, 2);call #Ultimate.allocInit(12, 3);~__return_main~0 := 0;~__tmp_259_0~0 := 0;~__return_305~0 := 0;~__tmp_383_0~0 := 0; {9541#true} is VALID [2022-04-08 09:27:27,222 INFO L290 TraceCheckUtils]: 1: Hoare triple {9541#true} assume true; {9541#true} is VALID [2022-04-08 09:27:27,222 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {9541#true} {9541#true} #191#return; {9541#true} is VALID [2022-04-08 09:27:27,222 INFO L272 TraceCheckUtils]: 0: Hoare triple {9541#true} call ULTIMATE.init(); {9551#(and (= |old(~__return_305~0)| ~__return_305~0) (= |old(~__tmp_259_0~0)| ~__tmp_259_0~0) (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__tmp_383_0~0)| ~__tmp_383_0~0) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-08 09:27:27,222 INFO L290 TraceCheckUtils]: 1: Hoare triple {9551#(and (= |old(~__return_305~0)| ~__return_305~0) (= |old(~__tmp_259_0~0)| ~__tmp_259_0~0) (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__tmp_383_0~0)| ~__tmp_383_0~0) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(33, 2);call #Ultimate.allocInit(12, 3);~__return_main~0 := 0;~__tmp_259_0~0 := 0;~__return_305~0 := 0;~__tmp_383_0~0 := 0; {9541#true} is VALID [2022-04-08 09:27:27,222 INFO L290 TraceCheckUtils]: 2: Hoare triple {9541#true} assume true; {9541#true} is VALID [2022-04-08 09:27:27,222 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {9541#true} {9541#true} #191#return; {9541#true} is VALID [2022-04-08 09:27:27,223 INFO L272 TraceCheckUtils]: 4: Hoare triple {9541#true} call #t~ret10 := main(); {9541#true} is VALID [2022-04-08 09:27:27,223 INFO L290 TraceCheckUtils]: 5: Hoare triple {9541#true} havoc ~main__tagbuf_len~0;havoc ~main__t~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~main__tagbuf_len~0 := #t~nondet4;havoc #t~nondet4; {9541#true} is VALID [2022-04-08 09:27:27,223 INFO L290 TraceCheckUtils]: 6: Hoare triple {9541#true} assume ~main__tagbuf_len~0 >= 1;~main__t~0 := 0;~main__tagbuf_len~0 := ~main__tagbuf_len~0 - 1; {9541#true} is VALID [2022-04-08 09:27:27,223 INFO L290 TraceCheckUtils]: 7: Hoare triple {9541#true} assume !(~main__t~0 == ~main__tagbuf_len~0);havoc ~main____CPAchecker_TMP_0~0;assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~main____CPAchecker_TMP_0~0 := #t~nondet5;havoc #t~nondet5; {9541#true} is VALID [2022-04-08 09:27:27,223 INFO L290 TraceCheckUtils]: 8: Hoare triple {9541#true} assume !!(0 == ~main____CPAchecker_TMP_0~0);havoc ~__tmp_13~0;~__tmp_13~0 := (if 0 <= ~main__t~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~12;~__VERIFIER_assert__cond~12 := ~__tmp_13~0; {9541#true} is VALID [2022-04-08 09:27:27,223 INFO L290 TraceCheckUtils]: 9: Hoare triple {9541#true} assume !(0 == ~__VERIFIER_assert__cond~12);havoc ~__tmp_14~0;~__tmp_14~0 := (if ~main__t~0 <= ~main__tagbuf_len~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~13;~__VERIFIER_assert__cond~13 := ~__tmp_14~0; {9541#true} is VALID [2022-04-08 09:27:27,223 INFO L290 TraceCheckUtils]: 10: Hoare triple {9541#true} assume !(0 == ~__VERIFIER_assert__cond~13);~__tmp_383_0~0 := ~main____CPAchecker_TMP_0~0; {9541#true} is VALID [2022-04-08 09:27:27,223 INFO L290 TraceCheckUtils]: 11: Hoare triple {9541#true} ~main____CPAchecker_TMP_0~0 := ~__tmp_383_0~0;~main____CPAchecker_TMP_1~0 := ~main__t~0;~main__t~0 := 1 + ~main__t~0; {9541#true} is VALID [2022-04-08 09:27:27,223 INFO L290 TraceCheckUtils]: 12: Hoare triple {9541#true} assume !(~main__t~0 == ~main__tagbuf_len~0);havoc ~main____CPAchecker_TMP_0~1;assume -2147483648 <= #t~nondet9 && #t~nondet9 <= 2147483647;~main____CPAchecker_TMP_0~1 := #t~nondet9;havoc #t~nondet9; {9546#(not (= main_~main__tagbuf_len~0 main_~main__t~0))} is VALID [2022-04-08 09:27:27,224 INFO L290 TraceCheckUtils]: 13: Hoare triple {9546#(not (= main_~main__tagbuf_len~0 main_~main__t~0))} assume !!(0 == ~main____CPAchecker_TMP_0~1);havoc ~__tmp_19~0;~__tmp_19~0 := (if 0 <= ~main__t~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~18;~__VERIFIER_assert__cond~18 := ~__tmp_19~0; {9546#(not (= main_~main__tagbuf_len~0 main_~main__t~0))} is VALID [2022-04-08 09:27:27,224 INFO L290 TraceCheckUtils]: 14: Hoare triple {9546#(not (= main_~main__tagbuf_len~0 main_~main__t~0))} assume !(0 == ~__VERIFIER_assert__cond~18);havoc ~__tmp_20~0;~__tmp_20~0 := (if ~main__t~0 <= ~main__tagbuf_len~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~19;~__VERIFIER_assert__cond~19 := ~__tmp_20~0; {9547#(or (and (= main_~__VERIFIER_assert__cond~19 0) (not (<= main_~main__t~0 main_~main__tagbuf_len~0))) (not (<= main_~main__tagbuf_len~0 main_~main__t~0)))} is VALID [2022-04-08 09:27:27,224 INFO L290 TraceCheckUtils]: 15: Hoare triple {9547#(or (and (= main_~__VERIFIER_assert__cond~19 0) (not (<= main_~main__t~0 main_~main__tagbuf_len~0))) (not (<= main_~main__tagbuf_len~0 main_~main__t~0)))} assume !(0 == ~__VERIFIER_assert__cond~19);~__tmp_383_0~0 := ~main____CPAchecker_TMP_0~1; {9548#(not (<= main_~main__tagbuf_len~0 main_~main__t~0))} is VALID [2022-04-08 09:27:27,225 INFO L290 TraceCheckUtils]: 16: Hoare triple {9548#(not (<= main_~main__tagbuf_len~0 main_~main__t~0))} ~main____CPAchecker_TMP_0~0 := ~__tmp_383_0~0;~main____CPAchecker_TMP_1~0 := ~main__t~0;~main__t~0 := 1 + ~main__t~0; {9549#(<= main_~main__t~0 main_~main__tagbuf_len~0)} is VALID [2022-04-08 09:27:27,225 INFO L290 TraceCheckUtils]: 17: Hoare triple {9549#(<= main_~main__t~0 main_~main__tagbuf_len~0)} assume !(~main__t~0 == ~main__tagbuf_len~0);havoc ~main____CPAchecker_TMP_0~1;assume -2147483648 <= #t~nondet9 && #t~nondet9 <= 2147483647;~main____CPAchecker_TMP_0~1 := #t~nondet9;havoc #t~nondet9; {9549#(<= main_~main__t~0 main_~main__tagbuf_len~0)} is VALID [2022-04-08 09:27:27,225 INFO L290 TraceCheckUtils]: 18: Hoare triple {9549#(<= main_~main__t~0 main_~main__tagbuf_len~0)} assume !(0 == ~main____CPAchecker_TMP_0~1);havoc ~__tmp_17~0;~__tmp_17~0 := (if 0 <= ~main__t~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~16;~__VERIFIER_assert__cond~16 := ~__tmp_17~0; {9549#(<= main_~main__t~0 main_~main__tagbuf_len~0)} is VALID [2022-04-08 09:27:27,225 INFO L290 TraceCheckUtils]: 19: Hoare triple {9549#(<= main_~main__t~0 main_~main__tagbuf_len~0)} assume !(0 == ~__VERIFIER_assert__cond~16);havoc ~__tmp_18~0;~__tmp_18~0 := (if ~main__t~0 <= ~main__tagbuf_len~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~17;~__VERIFIER_assert__cond~17 := ~__tmp_18~0; {9550#(not (= main_~__VERIFIER_assert__cond~17 0))} is VALID [2022-04-08 09:27:27,226 INFO L290 TraceCheckUtils]: 20: Hoare triple {9550#(not (= main_~__VERIFIER_assert__cond~17 0))} assume 0 == ~__VERIFIER_assert__cond~17; {9542#false} is VALID [2022-04-08 09:27:27,226 INFO L290 TraceCheckUtils]: 21: Hoare triple {9542#false} assume !false; {9542#false} is VALID [2022-04-08 09:27:27,226 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-08 09:27:27,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 09:27:27,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903310256] [2022-04-08 09:27:27,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903310256] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-08 09:27:27,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748464751] [2022-04-08 09:27:27,226 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-08 09:27:27,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-08 09:27:27,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-08 09:27:27,227 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-08 09:27:27,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-08 09:27:27,279 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-08 09:27:27,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-08 09:27:27,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 10 conjunts are in the unsatisfiable core [2022-04-08 09:27:27,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 09:27:27,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-08 09:27:27,752 INFO L272 TraceCheckUtils]: 0: Hoare triple {9541#true} call ULTIMATE.init(); {9541#true} is VALID [2022-04-08 09:27:27,752 INFO L290 TraceCheckUtils]: 1: Hoare triple {9541#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(33, 2);call #Ultimate.allocInit(12, 3);~__return_main~0 := 0;~__tmp_259_0~0 := 0;~__return_305~0 := 0;~__tmp_383_0~0 := 0; {9541#true} is VALID [2022-04-08 09:27:27,752 INFO L290 TraceCheckUtils]: 2: Hoare triple {9541#true} assume true; {9541#true} is VALID [2022-04-08 09:27:27,752 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {9541#true} {9541#true} #191#return; {9541#true} is VALID [2022-04-08 09:27:27,752 INFO L272 TraceCheckUtils]: 4: Hoare triple {9541#true} call #t~ret10 := main(); {9541#true} is VALID [2022-04-08 09:27:27,752 INFO L290 TraceCheckUtils]: 5: Hoare triple {9541#true} havoc ~main__tagbuf_len~0;havoc ~main__t~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~main__tagbuf_len~0 := #t~nondet4;havoc #t~nondet4; {9541#true} is VALID [2022-04-08 09:27:27,753 INFO L290 TraceCheckUtils]: 6: Hoare triple {9541#true} assume ~main__tagbuf_len~0 >= 1;~main__t~0 := 0;~main__tagbuf_len~0 := ~main__tagbuf_len~0 - 1; {9573#(and (<= 0 main_~main__tagbuf_len~0) (<= main_~main__t~0 0))} is VALID [2022-04-08 09:27:27,753 INFO L290 TraceCheckUtils]: 7: Hoare triple {9573#(and (<= 0 main_~main__tagbuf_len~0) (<= main_~main__t~0 0))} assume !(~main__t~0 == ~main__tagbuf_len~0);havoc ~main____CPAchecker_TMP_0~0;assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~main____CPAchecker_TMP_0~0 := #t~nondet5;havoc #t~nondet5; {9577#(and (<= 0 main_~main__tagbuf_len~0) (not (= main_~main__tagbuf_len~0 main_~main__t~0)) (<= main_~main__t~0 0))} is VALID [2022-04-08 09:27:27,753 INFO L290 TraceCheckUtils]: 8: Hoare triple {9577#(and (<= 0 main_~main__tagbuf_len~0) (not (= main_~main__tagbuf_len~0 main_~main__t~0)) (<= main_~main__t~0 0))} assume !!(0 == ~main____CPAchecker_TMP_0~0);havoc ~__tmp_13~0;~__tmp_13~0 := (if 0 <= ~main__t~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~12;~__VERIFIER_assert__cond~12 := ~__tmp_13~0; {9577#(and (<= 0 main_~main__tagbuf_len~0) (not (= main_~main__tagbuf_len~0 main_~main__t~0)) (<= main_~main__t~0 0))} is VALID [2022-04-08 09:27:27,754 INFO L290 TraceCheckUtils]: 9: Hoare triple {9577#(and (<= 0 main_~main__tagbuf_len~0) (not (= main_~main__tagbuf_len~0 main_~main__t~0)) (<= main_~main__t~0 0))} assume !(0 == ~__VERIFIER_assert__cond~12);havoc ~__tmp_14~0;~__tmp_14~0 := (if ~main__t~0 <= ~main__tagbuf_len~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~13;~__VERIFIER_assert__cond~13 := ~__tmp_14~0; {9577#(and (<= 0 main_~main__tagbuf_len~0) (not (= main_~main__tagbuf_len~0 main_~main__t~0)) (<= main_~main__t~0 0))} is VALID [2022-04-08 09:27:27,754 INFO L290 TraceCheckUtils]: 10: Hoare triple {9577#(and (<= 0 main_~main__tagbuf_len~0) (not (= main_~main__tagbuf_len~0 main_~main__t~0)) (<= main_~main__t~0 0))} assume !(0 == ~__VERIFIER_assert__cond~13);~__tmp_383_0~0 := ~main____CPAchecker_TMP_0~0; {9577#(and (<= 0 main_~main__tagbuf_len~0) (not (= main_~main__tagbuf_len~0 main_~main__t~0)) (<= main_~main__t~0 0))} is VALID [2022-04-08 09:27:27,755 INFO L290 TraceCheckUtils]: 11: Hoare triple {9577#(and (<= 0 main_~main__tagbuf_len~0) (not (= main_~main__tagbuf_len~0 main_~main__t~0)) (<= main_~main__t~0 0))} ~main____CPAchecker_TMP_0~0 := ~__tmp_383_0~0;~main____CPAchecker_TMP_1~0 := ~main__t~0;~main__t~0 := 1 + ~main__t~0; {9590#(and (<= main_~main__t~0 1) (< main_~main__t~0 (+ main_~main__tagbuf_len~0 1)) (<= 0 main_~main__tagbuf_len~0))} is VALID [2022-04-08 09:27:27,755 INFO L290 TraceCheckUtils]: 12: Hoare triple {9590#(and (<= main_~main__t~0 1) (< main_~main__t~0 (+ main_~main__tagbuf_len~0 1)) (<= 0 main_~main__tagbuf_len~0))} assume !(~main__t~0 == ~main__tagbuf_len~0);havoc ~main____CPAchecker_TMP_0~1;assume -2147483648 <= #t~nondet9 && #t~nondet9 <= 2147483647;~main____CPAchecker_TMP_0~1 := #t~nondet9;havoc #t~nondet9; {9594#(and (<= main_~main__t~0 1) (< main_~main__t~0 (+ main_~main__tagbuf_len~0 1)) (<= 0 main_~main__tagbuf_len~0) (not (= main_~main__tagbuf_len~0 main_~main__t~0)))} is VALID [2022-04-08 09:27:27,755 INFO L290 TraceCheckUtils]: 13: Hoare triple {9594#(and (<= main_~main__t~0 1) (< main_~main__t~0 (+ main_~main__tagbuf_len~0 1)) (<= 0 main_~main__tagbuf_len~0) (not (= main_~main__tagbuf_len~0 main_~main__t~0)))} assume !!(0 == ~main____CPAchecker_TMP_0~1);havoc ~__tmp_19~0;~__tmp_19~0 := (if 0 <= ~main__t~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~18;~__VERIFIER_assert__cond~18 := ~__tmp_19~0; {9594#(and (<= main_~main__t~0 1) (< main_~main__t~0 (+ main_~main__tagbuf_len~0 1)) (<= 0 main_~main__tagbuf_len~0) (not (= main_~main__tagbuf_len~0 main_~main__t~0)))} is VALID [2022-04-08 09:27:27,756 INFO L290 TraceCheckUtils]: 14: Hoare triple {9594#(and (<= main_~main__t~0 1) (< main_~main__t~0 (+ main_~main__tagbuf_len~0 1)) (<= 0 main_~main__tagbuf_len~0) (not (= main_~main__tagbuf_len~0 main_~main__t~0)))} assume !(0 == ~__VERIFIER_assert__cond~18);havoc ~__tmp_20~0;~__tmp_20~0 := (if ~main__t~0 <= ~main__tagbuf_len~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~19;~__VERIFIER_assert__cond~19 := ~__tmp_20~0; {9594#(and (<= main_~main__t~0 1) (< main_~main__t~0 (+ main_~main__tagbuf_len~0 1)) (<= 0 main_~main__tagbuf_len~0) (not (= main_~main__tagbuf_len~0 main_~main__t~0)))} is VALID [2022-04-08 09:27:27,756 INFO L290 TraceCheckUtils]: 15: Hoare triple {9594#(and (<= main_~main__t~0 1) (< main_~main__t~0 (+ main_~main__tagbuf_len~0 1)) (<= 0 main_~main__tagbuf_len~0) (not (= main_~main__tagbuf_len~0 main_~main__t~0)))} assume !(0 == ~__VERIFIER_assert__cond~19);~__tmp_383_0~0 := ~main____CPAchecker_TMP_0~1; {9594#(and (<= main_~main__t~0 1) (< main_~main__t~0 (+ main_~main__tagbuf_len~0 1)) (<= 0 main_~main__tagbuf_len~0) (not (= main_~main__tagbuf_len~0 main_~main__t~0)))} is VALID [2022-04-08 09:27:27,757 INFO L290 TraceCheckUtils]: 16: Hoare triple {9594#(and (<= main_~main__t~0 1) (< main_~main__t~0 (+ main_~main__tagbuf_len~0 1)) (<= 0 main_~main__tagbuf_len~0) (not (= main_~main__tagbuf_len~0 main_~main__t~0)))} ~main____CPAchecker_TMP_0~0 := ~__tmp_383_0~0;~main____CPAchecker_TMP_1~0 := ~main__t~0;~main__t~0 := 1 + ~main__t~0; {9607#(and (<= main_~main__t~0 2) (< main_~main__t~0 (+ main_~main__tagbuf_len~0 1)) (<= 0 main_~main__tagbuf_len~0))} is VALID [2022-04-08 09:27:27,757 INFO L290 TraceCheckUtils]: 17: Hoare triple {9607#(and (<= main_~main__t~0 2) (< main_~main__t~0 (+ main_~main__tagbuf_len~0 1)) (<= 0 main_~main__tagbuf_len~0))} assume !(~main__t~0 == ~main__tagbuf_len~0);havoc ~main____CPAchecker_TMP_0~1;assume -2147483648 <= #t~nondet9 && #t~nondet9 <= 2147483647;~main____CPAchecker_TMP_0~1 := #t~nondet9;havoc #t~nondet9; {9607#(and (<= main_~main__t~0 2) (< main_~main__t~0 (+ main_~main__tagbuf_len~0 1)) (<= 0 main_~main__tagbuf_len~0))} is VALID [2022-04-08 09:27:27,757 INFO L290 TraceCheckUtils]: 18: Hoare triple {9607#(and (<= main_~main__t~0 2) (< main_~main__t~0 (+ main_~main__tagbuf_len~0 1)) (<= 0 main_~main__tagbuf_len~0))} assume !(0 == ~main____CPAchecker_TMP_0~1);havoc ~__tmp_17~0;~__tmp_17~0 := (if 0 <= ~main__t~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~16;~__VERIFIER_assert__cond~16 := ~__tmp_17~0; {9607#(and (<= main_~main__t~0 2) (< main_~main__t~0 (+ main_~main__tagbuf_len~0 1)) (<= 0 main_~main__tagbuf_len~0))} is VALID [2022-04-08 09:27:27,758 INFO L290 TraceCheckUtils]: 19: Hoare triple {9607#(and (<= main_~main__t~0 2) (< main_~main__t~0 (+ main_~main__tagbuf_len~0 1)) (<= 0 main_~main__tagbuf_len~0))} assume !(0 == ~__VERIFIER_assert__cond~16);havoc ~__tmp_18~0;~__tmp_18~0 := (if ~main__t~0 <= ~main__tagbuf_len~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~17;~__VERIFIER_assert__cond~17 := ~__tmp_18~0; {9617#(<= 1 main_~__VERIFIER_assert__cond~17)} is VALID [2022-04-08 09:27:27,758 INFO L290 TraceCheckUtils]: 20: Hoare triple {9617#(<= 1 main_~__VERIFIER_assert__cond~17)} assume 0 == ~__VERIFIER_assert__cond~17; {9542#false} is VALID [2022-04-08 09:27:27,758 INFO L290 TraceCheckUtils]: 21: Hoare triple {9542#false} assume !false; {9542#false} is VALID [2022-04-08 09:27:27,758 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-08 09:27:27,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-08 09:27:27,880 INFO L290 TraceCheckUtils]: 21: Hoare triple {9542#false} assume !false; {9542#false} is VALID [2022-04-08 09:27:27,881 INFO L290 TraceCheckUtils]: 20: Hoare triple {9617#(<= 1 main_~__VERIFIER_assert__cond~17)} assume 0 == ~__VERIFIER_assert__cond~17; {9542#false} is VALID [2022-04-08 09:27:27,881 INFO L290 TraceCheckUtils]: 19: Hoare triple {9549#(<= main_~main__t~0 main_~main__tagbuf_len~0)} assume !(0 == ~__VERIFIER_assert__cond~16);havoc ~__tmp_18~0;~__tmp_18~0 := (if ~main__t~0 <= ~main__tagbuf_len~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~17;~__VERIFIER_assert__cond~17 := ~__tmp_18~0; {9617#(<= 1 main_~__VERIFIER_assert__cond~17)} is VALID [2022-04-08 09:27:27,881 INFO L290 TraceCheckUtils]: 18: Hoare triple {9549#(<= main_~main__t~0 main_~main__tagbuf_len~0)} assume !(0 == ~main____CPAchecker_TMP_0~1);havoc ~__tmp_17~0;~__tmp_17~0 := (if 0 <= ~main__t~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~16;~__VERIFIER_assert__cond~16 := ~__tmp_17~0; {9549#(<= main_~main__t~0 main_~main__tagbuf_len~0)} is VALID [2022-04-08 09:27:27,881 INFO L290 TraceCheckUtils]: 17: Hoare triple {9549#(<= main_~main__t~0 main_~main__tagbuf_len~0)} assume !(~main__t~0 == ~main__tagbuf_len~0);havoc ~main____CPAchecker_TMP_0~1;assume -2147483648 <= #t~nondet9 && #t~nondet9 <= 2147483647;~main____CPAchecker_TMP_0~1 := #t~nondet9;havoc #t~nondet9; {9549#(<= main_~main__t~0 main_~main__tagbuf_len~0)} is VALID [2022-04-08 09:27:27,882 INFO L290 TraceCheckUtils]: 16: Hoare triple {9548#(not (<= main_~main__tagbuf_len~0 main_~main__t~0))} ~main____CPAchecker_TMP_0~0 := ~__tmp_383_0~0;~main____CPAchecker_TMP_1~0 := ~main__t~0;~main__t~0 := 1 + ~main__t~0; {9549#(<= main_~main__t~0 main_~main__tagbuf_len~0)} is VALID [2022-04-08 09:27:27,882 INFO L290 TraceCheckUtils]: 15: Hoare triple {9548#(not (<= main_~main__tagbuf_len~0 main_~main__t~0))} assume !(0 == ~__VERIFIER_assert__cond~19);~__tmp_383_0~0 := ~main____CPAchecker_TMP_0~1; {9548#(not (<= main_~main__tagbuf_len~0 main_~main__t~0))} is VALID [2022-04-08 09:27:27,882 INFO L290 TraceCheckUtils]: 14: Hoare triple {9548#(not (<= main_~main__tagbuf_len~0 main_~main__t~0))} assume !(0 == ~__VERIFIER_assert__cond~18);havoc ~__tmp_20~0;~__tmp_20~0 := (if ~main__t~0 <= ~main__tagbuf_len~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~19;~__VERIFIER_assert__cond~19 := ~__tmp_20~0; {9548#(not (<= main_~main__tagbuf_len~0 main_~main__t~0))} is VALID [2022-04-08 09:27:27,883 INFO L290 TraceCheckUtils]: 13: Hoare triple {9548#(not (<= main_~main__tagbuf_len~0 main_~main__t~0))} assume !!(0 == ~main____CPAchecker_TMP_0~1);havoc ~__tmp_19~0;~__tmp_19~0 := (if 0 <= ~main__t~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~18;~__VERIFIER_assert__cond~18 := ~__tmp_19~0; {9548#(not (<= main_~main__tagbuf_len~0 main_~main__t~0))} is VALID [2022-04-08 09:27:27,883 INFO L290 TraceCheckUtils]: 12: Hoare triple {9549#(<= main_~main__t~0 main_~main__tagbuf_len~0)} assume !(~main__t~0 == ~main__tagbuf_len~0);havoc ~main____CPAchecker_TMP_0~1;assume -2147483648 <= #t~nondet9 && #t~nondet9 <= 2147483647;~main____CPAchecker_TMP_0~1 := #t~nondet9;havoc #t~nondet9; {9548#(not (<= main_~main__tagbuf_len~0 main_~main__t~0))} is VALID [2022-04-08 09:27:27,883 INFO L290 TraceCheckUtils]: 11: Hoare triple {9548#(not (<= main_~main__tagbuf_len~0 main_~main__t~0))} ~main____CPAchecker_TMP_0~0 := ~__tmp_383_0~0;~main____CPAchecker_TMP_1~0 := ~main__t~0;~main__t~0 := 1 + ~main__t~0; {9549#(<= main_~main__t~0 main_~main__tagbuf_len~0)} is VALID [2022-04-08 09:27:27,884 INFO L290 TraceCheckUtils]: 10: Hoare triple {9548#(not (<= main_~main__tagbuf_len~0 main_~main__t~0))} assume !(0 == ~__VERIFIER_assert__cond~13);~__tmp_383_0~0 := ~main____CPAchecker_TMP_0~0; {9548#(not (<= main_~main__tagbuf_len~0 main_~main__t~0))} is VALID [2022-04-08 09:27:27,884 INFO L290 TraceCheckUtils]: 9: Hoare triple {9548#(not (<= main_~main__tagbuf_len~0 main_~main__t~0))} assume !(0 == ~__VERIFIER_assert__cond~12);havoc ~__tmp_14~0;~__tmp_14~0 := (if ~main__t~0 <= ~main__tagbuf_len~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~13;~__VERIFIER_assert__cond~13 := ~__tmp_14~0; {9548#(not (<= main_~main__tagbuf_len~0 main_~main__t~0))} is VALID [2022-04-08 09:27:27,884 INFO L290 TraceCheckUtils]: 8: Hoare triple {9548#(not (<= main_~main__tagbuf_len~0 main_~main__t~0))} assume !!(0 == ~main____CPAchecker_TMP_0~0);havoc ~__tmp_13~0;~__tmp_13~0 := (if 0 <= ~main__t~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~12;~__VERIFIER_assert__cond~12 := ~__tmp_13~0; {9548#(not (<= main_~main__tagbuf_len~0 main_~main__t~0))} is VALID [2022-04-08 09:27:27,885 INFO L290 TraceCheckUtils]: 7: Hoare triple {9549#(<= main_~main__t~0 main_~main__tagbuf_len~0)} assume !(~main__t~0 == ~main__tagbuf_len~0);havoc ~main____CPAchecker_TMP_0~0;assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~main____CPAchecker_TMP_0~0 := #t~nondet5;havoc #t~nondet5; {9548#(not (<= main_~main__tagbuf_len~0 main_~main__t~0))} is VALID [2022-04-08 09:27:27,885 INFO L290 TraceCheckUtils]: 6: Hoare triple {9541#true} assume ~main__tagbuf_len~0 >= 1;~main__t~0 := 0;~main__tagbuf_len~0 := ~main__tagbuf_len~0 - 1; {9549#(<= main_~main__t~0 main_~main__tagbuf_len~0)} is VALID [2022-04-08 09:27:27,885 INFO L290 TraceCheckUtils]: 5: Hoare triple {9541#true} havoc ~main__tagbuf_len~0;havoc ~main__t~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~main__tagbuf_len~0 := #t~nondet4;havoc #t~nondet4; {9541#true} is VALID [2022-04-08 09:27:27,885 INFO L272 TraceCheckUtils]: 4: Hoare triple {9541#true} call #t~ret10 := main(); {9541#true} is VALID [2022-04-08 09:27:27,885 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {9541#true} {9541#true} #191#return; {9541#true} is VALID [2022-04-08 09:27:27,885 INFO L290 TraceCheckUtils]: 2: Hoare triple {9541#true} assume true; {9541#true} is VALID [2022-04-08 09:27:27,885 INFO L290 TraceCheckUtils]: 1: Hoare triple {9541#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(33, 2);call #Ultimate.allocInit(12, 3);~__return_main~0 := 0;~__tmp_259_0~0 := 0;~__return_305~0 := 0;~__tmp_383_0~0 := 0; {9541#true} is VALID [2022-04-08 09:27:27,885 INFO L272 TraceCheckUtils]: 0: Hoare triple {9541#true} call ULTIMATE.init(); {9541#true} is VALID [2022-04-08 09:27:27,886 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-04-08 09:27:27,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748464751] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-08 09:27:27,886 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-08 09:27:27,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 5] total 14 [2022-04-08 09:27:27,886 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 09:27:27,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [51415585] [2022-04-08 09:27:27,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [51415585] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 09:27:27,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 09:27:27,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-08 09:27:27,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378227003] [2022-04-08 09:27:27,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 09:27:27,887 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2022-04-08 09:27:27,887 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 09:27:27,887 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:27,898 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 22 edges. 22 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 09:27:27,898 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-08 09:27:27,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 09:27:27,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-08 09:27:27,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-04-08 09:27:27,898 INFO L87 Difference]: Start difference. First operand 51 states and 58 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:28,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 09:27:28,257 INFO L93 Difference]: Finished difference Result 67 states and 76 transitions. [2022-04-08 09:27:28,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-08 09:27:28,257 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2022-04-08 09:27:28,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 09:27:28,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:28,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 62 transitions. [2022-04-08 09:27:28,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:28,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 62 transitions. [2022-04-08 09:27:28,259 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 9 states and 62 transitions. [2022-04-08 09:27:28,296 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 62 edges. 62 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 09:27:28,297 INFO L225 Difference]: With dead ends: 67 [2022-04-08 09:27:28,297 INFO L226 Difference]: Without dead ends: 65 [2022-04-08 09:27:28,297 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 36 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2022-04-08 09:27:28,298 INFO L913 BasicCegarLoop]: 22 mSDtfsCounter, 120 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-08 09:27:28,298 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 53 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-08 09:27:28,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-04-08 09:27:28,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 44. [2022-04-08 09:27:28,380 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 09:27:28,381 INFO L82 GeneralOperation]: Start isEquivalent. First operand 65 states. Second operand has 44 states, 39 states have (on average 1.205128205128205) internal successors, (47), 40 states have internal predecessors, (47), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:28,381 INFO L74 IsIncluded]: Start isIncluded. First operand 65 states. Second operand has 44 states, 39 states have (on average 1.205128205128205) internal successors, (47), 40 states have internal predecessors, (47), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:28,381 INFO L87 Difference]: Start difference. First operand 65 states. Second operand has 44 states, 39 states have (on average 1.205128205128205) internal successors, (47), 40 states have internal predecessors, (47), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:28,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 09:27:28,381 INFO L93 Difference]: Finished difference Result 65 states and 74 transitions. [2022-04-08 09:27:28,382 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 74 transitions. [2022-04-08 09:27:28,383 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 09:27:28,383 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 09:27:28,383 INFO L74 IsIncluded]: Start isIncluded. First operand has 44 states, 39 states have (on average 1.205128205128205) internal successors, (47), 40 states have internal predecessors, (47), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 65 states. [2022-04-08 09:27:28,383 INFO L87 Difference]: Start difference. First operand has 44 states, 39 states have (on average 1.205128205128205) internal successors, (47), 40 states have internal predecessors, (47), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 65 states. [2022-04-08 09:27:28,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 09:27:28,384 INFO L93 Difference]: Finished difference Result 65 states and 74 transitions. [2022-04-08 09:27:28,384 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 74 transitions. [2022-04-08 09:27:28,385 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 09:27:28,385 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 09:27:28,385 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 09:27:28,385 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 09:27:28,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 39 states have (on average 1.205128205128205) internal successors, (47), 40 states have internal predecessors, (47), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:28,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 50 transitions. [2022-04-08 09:27:28,386 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 50 transitions. Word has length 22 [2022-04-08 09:27:28,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 09:27:28,386 INFO L478 AbstractCegarLoop]: Abstraction has 44 states and 50 transitions. [2022-04-08 09:27:28,386 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:28,386 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 44 states and 50 transitions. [2022-04-08 09:27:28,454 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 50 edges. 50 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 09:27:28,454 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 50 transitions. [2022-04-08 09:27:28,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-04-08 09:27:28,455 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 09:27:28,455 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 09:27:28,474 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-04-08 09:27:28,672 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-04-08 09:27:28,672 INFO L403 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-04-08 09:27:28,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 09:27:28,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1184340980, now seen corresponding path program 1 times [2022-04-08 09:27:28,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 09:27:28,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1242291524] [2022-04-08 09:27:28,673 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-08 09:27:28,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1184340980, now seen corresponding path program 2 times [2022-04-08 09:27:28,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 09:27:28,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128068333] [2022-04-08 09:27:28,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 09:27:28,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 09:27:28,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 09:27:28,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-08 09:27:28,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 09:27:28,740 INFO L290 TraceCheckUtils]: 0: Hoare triple {10060#(and (= |old(~__return_305~0)| ~__return_305~0) (= |old(~__tmp_259_0~0)| ~__tmp_259_0~0) (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__tmp_383_0~0)| ~__tmp_383_0~0) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(33, 2);call #Ultimate.allocInit(12, 3);~__return_main~0 := 0;~__tmp_259_0~0 := 0;~__return_305~0 := 0;~__tmp_383_0~0 := 0; {10050#true} is VALID [2022-04-08 09:27:28,740 INFO L290 TraceCheckUtils]: 1: Hoare triple {10050#true} assume true; {10050#true} is VALID [2022-04-08 09:27:28,740 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {10050#true} {10050#true} #191#return; {10050#true} is VALID [2022-04-08 09:27:28,741 INFO L272 TraceCheckUtils]: 0: Hoare triple {10050#true} call ULTIMATE.init(); {10060#(and (= |old(~__return_305~0)| ~__return_305~0) (= |old(~__tmp_259_0~0)| ~__tmp_259_0~0) (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__tmp_383_0~0)| ~__tmp_383_0~0) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-08 09:27:28,741 INFO L290 TraceCheckUtils]: 1: Hoare triple {10060#(and (= |old(~__return_305~0)| ~__return_305~0) (= |old(~__tmp_259_0~0)| ~__tmp_259_0~0) (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__tmp_383_0~0)| ~__tmp_383_0~0) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(33, 2);call #Ultimate.allocInit(12, 3);~__return_main~0 := 0;~__tmp_259_0~0 := 0;~__return_305~0 := 0;~__tmp_383_0~0 := 0; {10050#true} is VALID [2022-04-08 09:27:28,741 INFO L290 TraceCheckUtils]: 2: Hoare triple {10050#true} assume true; {10050#true} is VALID [2022-04-08 09:27:28,741 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {10050#true} {10050#true} #191#return; {10050#true} is VALID [2022-04-08 09:27:28,741 INFO L272 TraceCheckUtils]: 4: Hoare triple {10050#true} call #t~ret10 := main(); {10050#true} is VALID [2022-04-08 09:27:28,741 INFO L290 TraceCheckUtils]: 5: Hoare triple {10050#true} havoc ~main__tagbuf_len~0;havoc ~main__t~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~main__tagbuf_len~0 := #t~nondet4;havoc #t~nondet4; {10050#true} is VALID [2022-04-08 09:27:28,741 INFO L290 TraceCheckUtils]: 6: Hoare triple {10050#true} assume ~main__tagbuf_len~0 >= 1;~main__t~0 := 0;~main__tagbuf_len~0 := ~main__tagbuf_len~0 - 1; {10050#true} is VALID [2022-04-08 09:27:28,741 INFO L290 TraceCheckUtils]: 7: Hoare triple {10050#true} assume !(~main__t~0 == ~main__tagbuf_len~0);havoc ~main____CPAchecker_TMP_0~0;assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~main____CPAchecker_TMP_0~0 := #t~nondet5;havoc #t~nondet5; {10050#true} is VALID [2022-04-08 09:27:28,741 INFO L290 TraceCheckUtils]: 8: Hoare triple {10050#true} assume !!(0 == ~main____CPAchecker_TMP_0~0);havoc ~__tmp_13~0;~__tmp_13~0 := (if 0 <= ~main__t~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~12;~__VERIFIER_assert__cond~12 := ~__tmp_13~0; {10050#true} is VALID [2022-04-08 09:27:28,741 INFO L290 TraceCheckUtils]: 9: Hoare triple {10050#true} assume !(0 == ~__VERIFIER_assert__cond~12);havoc ~__tmp_14~0;~__tmp_14~0 := (if ~main__t~0 <= ~main__tagbuf_len~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~13;~__VERIFIER_assert__cond~13 := ~__tmp_14~0; {10050#true} is VALID [2022-04-08 09:27:28,741 INFO L290 TraceCheckUtils]: 10: Hoare triple {10050#true} assume !(0 == ~__VERIFIER_assert__cond~13);~__tmp_383_0~0 := ~main____CPAchecker_TMP_0~0; {10050#true} is VALID [2022-04-08 09:27:28,741 INFO L290 TraceCheckUtils]: 11: Hoare triple {10050#true} ~main____CPAchecker_TMP_0~0 := ~__tmp_383_0~0;~main____CPAchecker_TMP_1~0 := ~main__t~0;~main__t~0 := 1 + ~main__t~0; {10050#true} is VALID [2022-04-08 09:27:28,757 INFO L290 TraceCheckUtils]: 12: Hoare triple {10050#true} assume !(~main__t~0 == ~main__tagbuf_len~0);havoc ~main____CPAchecker_TMP_0~1;assume -2147483648 <= #t~nondet9 && #t~nondet9 <= 2147483647;~main____CPAchecker_TMP_0~1 := #t~nondet9;havoc #t~nondet9; {10055#(not (= main_~main__tagbuf_len~0 main_~main__t~0))} is VALID [2022-04-08 09:27:28,758 INFO L290 TraceCheckUtils]: 13: Hoare triple {10055#(not (= main_~main__tagbuf_len~0 main_~main__t~0))} assume !(0 == ~main____CPAchecker_TMP_0~1);havoc ~__tmp_17~0;~__tmp_17~0 := (if 0 <= ~main__t~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~16;~__VERIFIER_assert__cond~16 := ~__tmp_17~0; {10055#(not (= main_~main__tagbuf_len~0 main_~main__t~0))} is VALID [2022-04-08 09:27:28,758 INFO L290 TraceCheckUtils]: 14: Hoare triple {10055#(not (= main_~main__tagbuf_len~0 main_~main__t~0))} assume !(0 == ~__VERIFIER_assert__cond~16);havoc ~__tmp_18~0;~__tmp_18~0 := (if ~main__t~0 <= ~main__tagbuf_len~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~17;~__VERIFIER_assert__cond~17 := ~__tmp_18~0; {10056#(or (not (<= main_~main__tagbuf_len~0 main_~main__t~0)) (and (= main_~__VERIFIER_assert__cond~17 0) (not (<= main_~main__t~0 main_~main__tagbuf_len~0))))} is VALID [2022-04-08 09:27:28,758 INFO L290 TraceCheckUtils]: 15: Hoare triple {10056#(or (not (<= main_~main__tagbuf_len~0 main_~main__t~0)) (and (= main_~__VERIFIER_assert__cond~17 0) (not (<= main_~main__t~0 main_~main__tagbuf_len~0))))} assume !(0 == ~__VERIFIER_assert__cond~17);~__tmp_259_0~0 := ~main____CPAchecker_TMP_0~1; {10057#(not (<= main_~main__tagbuf_len~0 main_~main__t~0))} is VALID [2022-04-08 09:27:28,759 INFO L290 TraceCheckUtils]: 16: Hoare triple {10057#(not (<= main_~main__tagbuf_len~0 main_~main__t~0))} ~main____CPAchecker_TMP_0~0 := ~__tmp_259_0~0;~main____CPAchecker_TMP_2~0 := ~main__t~0;~main__t~0 := 1 + ~main__t~0; {10058#(<= main_~main__t~0 main_~main__tagbuf_len~0)} is VALID [2022-04-08 09:27:28,759 INFO L290 TraceCheckUtils]: 17: Hoare triple {10058#(<= main_~main__t~0 main_~main__tagbuf_len~0)} assume !(~main__t~0 == ~main__tagbuf_len~0);havoc ~main____CPAchecker_TMP_3~0;assume -2147483648 <= #t~nondet6 && #t~nondet6 <= 2147483647;~main____CPAchecker_TMP_3~0 := #t~nondet6;havoc #t~nondet6; {10058#(<= main_~main__t~0 main_~main__tagbuf_len~0)} is VALID [2022-04-08 09:27:28,759 INFO L290 TraceCheckUtils]: 18: Hoare triple {10058#(<= main_~main__t~0 main_~main__tagbuf_len~0)} assume !(0 == ~main____CPAchecker_TMP_3~0);havoc ~main____CPAchecker_TMP_4~0;assume -2147483648 <= #t~nondet7 && #t~nondet7 <= 2147483647;~main____CPAchecker_TMP_4~0 := #t~nondet7;havoc #t~nondet7; {10058#(<= main_~main__t~0 main_~main__tagbuf_len~0)} is VALID [2022-04-08 09:27:28,760 INFO L290 TraceCheckUtils]: 19: Hoare triple {10058#(<= main_~main__t~0 main_~main__tagbuf_len~0)} assume !(0 == ~main____CPAchecker_TMP_4~0);havoc ~__tmp_5~0;~__tmp_5~0 := (if 0 <= ~main__t~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~4;~__VERIFIER_assert__cond~4 := ~__tmp_5~0; {10058#(<= main_~main__t~0 main_~main__tagbuf_len~0)} is VALID [2022-04-08 09:27:28,760 INFO L290 TraceCheckUtils]: 20: Hoare triple {10058#(<= main_~main__t~0 main_~main__tagbuf_len~0)} assume !(0 == ~__VERIFIER_assert__cond~4);havoc ~__tmp_6~0;~__tmp_6~0 := (if ~main__t~0 <= ~main__tagbuf_len~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~5;~__VERIFIER_assert__cond~5 := ~__tmp_6~0; {10059#(not (= main_~__VERIFIER_assert__cond~5 0))} is VALID [2022-04-08 09:27:28,763 INFO L290 TraceCheckUtils]: 21: Hoare triple {10059#(not (= main_~__VERIFIER_assert__cond~5 0))} assume 0 == ~__VERIFIER_assert__cond~5; {10051#false} is VALID [2022-04-08 09:27:28,763 INFO L290 TraceCheckUtils]: 22: Hoare triple {10051#false} assume !false; {10051#false} is VALID [2022-04-08 09:27:28,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-08 09:27:28,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 09:27:28,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128068333] [2022-04-08 09:27:28,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128068333] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 09:27:28,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 09:27:28,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-08 09:27:28,763 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 09:27:28,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1242291524] [2022-04-08 09:27:28,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1242291524] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 09:27:28,764 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 09:27:28,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-08 09:27:28,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918559421] [2022-04-08 09:27:28,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 09:27:28,764 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2022-04-08 09:27:28,764 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 09:27:28,764 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:28,778 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 23 edges. 23 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 09:27:28,778 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-08 09:27:28,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 09:27:28,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-08 09:27:28,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-04-08 09:27:28,778 INFO L87 Difference]: Start difference. First operand 44 states and 50 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:29,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 09:27:29,066 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2022-04-08 09:27:29,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-08 09:27:29,066 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2022-04-08 09:27:29,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 09:27:29,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:29,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 55 transitions. [2022-04-08 09:27:29,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:29,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 55 transitions. [2022-04-08 09:27:29,068 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 9 states and 55 transitions. [2022-04-08 09:27:29,115 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 55 edges. 55 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 09:27:29,115 INFO L225 Difference]: With dead ends: 56 [2022-04-08 09:27:29,115 INFO L226 Difference]: Without dead ends: 54 [2022-04-08 09:27:29,116 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-04-08 09:27:29,116 INFO L913 BasicCegarLoop]: 23 mSDtfsCounter, 68 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-08 09:27:29,116 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 53 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-08 09:27:29,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-04-08 09:27:29,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 39. [2022-04-08 09:27:29,190 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 09:27:29,190 INFO L82 GeneralOperation]: Start isEquivalent. First operand 54 states. Second operand has 39 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 35 states have internal predecessors, (41), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:29,190 INFO L74 IsIncluded]: Start isIncluded. First operand 54 states. Second operand has 39 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 35 states have internal predecessors, (41), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:29,190 INFO L87 Difference]: Start difference. First operand 54 states. Second operand has 39 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 35 states have internal predecessors, (41), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:29,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 09:27:29,191 INFO L93 Difference]: Finished difference Result 54 states and 62 transitions. [2022-04-08 09:27:29,191 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 62 transitions. [2022-04-08 09:27:29,191 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 09:27:29,191 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 09:27:29,191 INFO L74 IsIncluded]: Start isIncluded. First operand has 39 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 35 states have internal predecessors, (41), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 54 states. [2022-04-08 09:27:29,191 INFO L87 Difference]: Start difference. First operand has 39 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 35 states have internal predecessors, (41), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 54 states. [2022-04-08 09:27:29,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 09:27:29,191 INFO L93 Difference]: Finished difference Result 54 states and 62 transitions. [2022-04-08 09:27:29,192 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 62 transitions. [2022-04-08 09:27:29,192 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 09:27:29,192 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 09:27:29,192 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 09:27:29,192 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 09:27:29,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 35 states have internal predecessors, (41), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:29,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2022-04-08 09:27:29,192 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 23 [2022-04-08 09:27:29,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 09:27:29,192 INFO L478 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2022-04-08 09:27:29,192 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:29,193 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 39 states and 44 transitions. [2022-04-08 09:27:29,249 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 44 edges. 44 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 09:27:29,249 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2022-04-08 09:27:29,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-04-08 09:27:29,249 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 09:27:29,249 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 09:27:29,249 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-04-08 09:27:29,250 INFO L403 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr10ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-04-08 09:27:29,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 09:27:29,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1136625730, now seen corresponding path program 1 times [2022-04-08 09:27:29,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 09:27:29,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [348001618] [2022-04-08 09:27:29,250 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-08 09:27:29,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1136625730, now seen corresponding path program 2 times [2022-04-08 09:27:29,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 09:27:29,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034303435] [2022-04-08 09:27:29,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 09:27:29,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 09:27:29,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 09:27:29,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-08 09:27:29,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 09:27:29,327 INFO L290 TraceCheckUtils]: 0: Hoare triple {10380#(and (= |old(~__return_305~0)| ~__return_305~0) (= |old(~__tmp_259_0~0)| ~__tmp_259_0~0) (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__tmp_383_0~0)| ~__tmp_383_0~0) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(33, 2);call #Ultimate.allocInit(12, 3);~__return_main~0 := 0;~__tmp_259_0~0 := 0;~__return_305~0 := 0;~__tmp_383_0~0 := 0; {10370#true} is VALID [2022-04-08 09:27:29,327 INFO L290 TraceCheckUtils]: 1: Hoare triple {10370#true} assume true; {10370#true} is VALID [2022-04-08 09:27:29,327 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {10370#true} {10370#true} #191#return; {10370#true} is VALID [2022-04-08 09:27:29,328 INFO L272 TraceCheckUtils]: 0: Hoare triple {10370#true} call ULTIMATE.init(); {10380#(and (= |old(~__return_305~0)| ~__return_305~0) (= |old(~__tmp_259_0~0)| ~__tmp_259_0~0) (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__tmp_383_0~0)| ~__tmp_383_0~0) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-08 09:27:29,328 INFO L290 TraceCheckUtils]: 1: Hoare triple {10380#(and (= |old(~__return_305~0)| ~__return_305~0) (= |old(~__tmp_259_0~0)| ~__tmp_259_0~0) (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__tmp_383_0~0)| ~__tmp_383_0~0) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(33, 2);call #Ultimate.allocInit(12, 3);~__return_main~0 := 0;~__tmp_259_0~0 := 0;~__return_305~0 := 0;~__tmp_383_0~0 := 0; {10370#true} is VALID [2022-04-08 09:27:29,328 INFO L290 TraceCheckUtils]: 2: Hoare triple {10370#true} assume true; {10370#true} is VALID [2022-04-08 09:27:29,328 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {10370#true} {10370#true} #191#return; {10370#true} is VALID [2022-04-08 09:27:29,328 INFO L272 TraceCheckUtils]: 4: Hoare triple {10370#true} call #t~ret10 := main(); {10370#true} is VALID [2022-04-08 09:27:29,328 INFO L290 TraceCheckUtils]: 5: Hoare triple {10370#true} havoc ~main__tagbuf_len~0;havoc ~main__t~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~main__tagbuf_len~0 := #t~nondet4;havoc #t~nondet4; {10370#true} is VALID [2022-04-08 09:27:29,328 INFO L290 TraceCheckUtils]: 6: Hoare triple {10370#true} assume ~main__tagbuf_len~0 >= 1;~main__t~0 := 0;~main__tagbuf_len~0 := ~main__tagbuf_len~0 - 1; {10370#true} is VALID [2022-04-08 09:27:29,328 INFO L290 TraceCheckUtils]: 7: Hoare triple {10370#true} assume !(~main__t~0 == ~main__tagbuf_len~0);havoc ~main____CPAchecker_TMP_0~0;assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~main____CPAchecker_TMP_0~0 := #t~nondet5;havoc #t~nondet5; {10370#true} is VALID [2022-04-08 09:27:29,328 INFO L290 TraceCheckUtils]: 8: Hoare triple {10370#true} assume !!(0 == ~main____CPAchecker_TMP_0~0);havoc ~__tmp_13~0;~__tmp_13~0 := (if 0 <= ~main__t~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~12;~__VERIFIER_assert__cond~12 := ~__tmp_13~0; {10370#true} is VALID [2022-04-08 09:27:29,328 INFO L290 TraceCheckUtils]: 9: Hoare triple {10370#true} assume !(0 == ~__VERIFIER_assert__cond~12);havoc ~__tmp_14~0;~__tmp_14~0 := (if ~main__t~0 <= ~main__tagbuf_len~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~13;~__VERIFIER_assert__cond~13 := ~__tmp_14~0; {10370#true} is VALID [2022-04-08 09:27:29,328 INFO L290 TraceCheckUtils]: 10: Hoare triple {10370#true} assume !(0 == ~__VERIFIER_assert__cond~13);~__tmp_383_0~0 := ~main____CPAchecker_TMP_0~0; {10370#true} is VALID [2022-04-08 09:27:29,328 INFO L290 TraceCheckUtils]: 11: Hoare triple {10370#true} ~main____CPAchecker_TMP_0~0 := ~__tmp_383_0~0;~main____CPAchecker_TMP_1~0 := ~main__t~0;~main__t~0 := 1 + ~main__t~0; {10370#true} is VALID [2022-04-08 09:27:29,329 INFO L290 TraceCheckUtils]: 12: Hoare triple {10370#true} assume !(~main__t~0 == ~main__tagbuf_len~0);havoc ~main____CPAchecker_TMP_0~1;assume -2147483648 <= #t~nondet9 && #t~nondet9 <= 2147483647;~main____CPAchecker_TMP_0~1 := #t~nondet9;havoc #t~nondet9; {10375#(not (= main_~main__tagbuf_len~0 main_~main__t~0))} is VALID [2022-04-08 09:27:29,329 INFO L290 TraceCheckUtils]: 13: Hoare triple {10375#(not (= main_~main__tagbuf_len~0 main_~main__t~0))} assume !(0 == ~main____CPAchecker_TMP_0~1);havoc ~__tmp_17~0;~__tmp_17~0 := (if 0 <= ~main__t~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~16;~__VERIFIER_assert__cond~16 := ~__tmp_17~0; {10375#(not (= main_~main__tagbuf_len~0 main_~main__t~0))} is VALID [2022-04-08 09:27:29,329 INFO L290 TraceCheckUtils]: 14: Hoare triple {10375#(not (= main_~main__tagbuf_len~0 main_~main__t~0))} assume !(0 == ~__VERIFIER_assert__cond~16);havoc ~__tmp_18~0;~__tmp_18~0 := (if ~main__t~0 <= ~main__tagbuf_len~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~17;~__VERIFIER_assert__cond~17 := ~__tmp_18~0; {10376#(or (not (<= main_~main__tagbuf_len~0 main_~main__t~0)) (and (= main_~__VERIFIER_assert__cond~17 0) (not (<= main_~main__t~0 main_~main__tagbuf_len~0))))} is VALID [2022-04-08 09:27:29,330 INFO L290 TraceCheckUtils]: 15: Hoare triple {10376#(or (not (<= main_~main__tagbuf_len~0 main_~main__t~0)) (and (= main_~__VERIFIER_assert__cond~17 0) (not (<= main_~main__t~0 main_~main__tagbuf_len~0))))} assume !(0 == ~__VERIFIER_assert__cond~17);~__tmp_259_0~0 := ~main____CPAchecker_TMP_0~1; {10377#(not (<= main_~main__tagbuf_len~0 main_~main__t~0))} is VALID [2022-04-08 09:27:29,330 INFO L290 TraceCheckUtils]: 16: Hoare triple {10377#(not (<= main_~main__tagbuf_len~0 main_~main__t~0))} ~main____CPAchecker_TMP_0~0 := ~__tmp_259_0~0;~main____CPAchecker_TMP_2~0 := ~main__t~0;~main__t~0 := 1 + ~main__t~0; {10378#(<= main_~main__t~0 main_~main__tagbuf_len~0)} is VALID [2022-04-08 09:27:29,330 INFO L290 TraceCheckUtils]: 17: Hoare triple {10378#(<= main_~main__t~0 main_~main__tagbuf_len~0)} assume !(~main__t~0 == ~main__tagbuf_len~0);havoc ~main____CPAchecker_TMP_3~0;assume -2147483648 <= #t~nondet6 && #t~nondet6 <= 2147483647;~main____CPAchecker_TMP_3~0 := #t~nondet6;havoc #t~nondet6; {10378#(<= main_~main__t~0 main_~main__tagbuf_len~0)} is VALID [2022-04-08 09:27:29,331 INFO L290 TraceCheckUtils]: 18: Hoare triple {10378#(<= main_~main__t~0 main_~main__tagbuf_len~0)} assume !!(0 == ~main____CPAchecker_TMP_3~0);havoc ~main____CPAchecker_TMP_6~0;assume -2147483648 <= #t~nondet8 && #t~nondet8 <= 2147483647;~main____CPAchecker_TMP_6~0 := #t~nondet8;havoc #t~nondet8; {10378#(<= main_~main__t~0 main_~main__tagbuf_len~0)} is VALID [2022-04-08 09:27:29,331 INFO L290 TraceCheckUtils]: 19: Hoare triple {10378#(<= main_~main__t~0 main_~main__tagbuf_len~0)} assume !(0 == ~main____CPAchecker_TMP_6~0);havoc ~__tmp_11~0;~__tmp_11~0 := (if 0 <= ~main__t~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~10;~__VERIFIER_assert__cond~10 := ~__tmp_11~0; {10378#(<= main_~main__t~0 main_~main__tagbuf_len~0)} is VALID [2022-04-08 09:27:29,331 INFO L290 TraceCheckUtils]: 20: Hoare triple {10378#(<= main_~main__t~0 main_~main__tagbuf_len~0)} assume !(0 == ~__VERIFIER_assert__cond~10);havoc ~__tmp_12~0;~__tmp_12~0 := (if ~main__t~0 <= ~main__tagbuf_len~0 then 1 else 0);havoc ~__VERIFIER_assert__cond~11;~__VERIFIER_assert__cond~11 := ~__tmp_12~0; {10379#(not (= main_~__VERIFIER_assert__cond~11 0))} is VALID [2022-04-08 09:27:29,331 INFO L290 TraceCheckUtils]: 21: Hoare triple {10379#(not (= main_~__VERIFIER_assert__cond~11 0))} assume 0 == ~__VERIFIER_assert__cond~11; {10371#false} is VALID [2022-04-08 09:27:29,331 INFO L290 TraceCheckUtils]: 22: Hoare triple {10371#false} assume !false; {10371#false} is VALID [2022-04-08 09:27:29,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-08 09:27:29,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 09:27:29,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034303435] [2022-04-08 09:27:29,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034303435] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 09:27:29,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 09:27:29,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-08 09:27:29,332 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 09:27:29,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [348001618] [2022-04-08 09:27:29,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [348001618] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 09:27:29,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 09:27:29,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-08 09:27:29,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680372893] [2022-04-08 09:27:29,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 09:27:29,333 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2022-04-08 09:27:29,333 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 09:27:29,333 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:29,346 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 23 edges. 23 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 09:27:29,347 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-08 09:27:29,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 09:27:29,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-08 09:27:29,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-04-08 09:27:29,347 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:29,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 09:27:29,560 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2022-04-08 09:27:29,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-08 09:27:29,560 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2022-04-08 09:27:29,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 09:27:29,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:29,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 39 transitions. [2022-04-08 09:27:29,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:29,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 39 transitions. [2022-04-08 09:27:29,561 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 8 states and 39 transitions. [2022-04-08 09:27:29,587 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 39 edges. 39 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 09:27:29,587 INFO L225 Difference]: With dead ends: 39 [2022-04-08 09:27:29,587 INFO L226 Difference]: Without dead ends: 0 [2022-04-08 09:27:29,588 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-04-08 09:27:29,588 INFO L913 BasicCegarLoop]: 15 mSDtfsCounter, 31 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-08 09:27:29,588 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 43 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-08 09:27:29,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-04-08 09:27:29,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-04-08 09:27:29,589 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 09:27:29,589 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-08 09:27:29,589 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-08 09:27:29,589 INFO L87 Difference]: Start difference. First operand 0 states. Second operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-08 09:27:29,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 09:27:29,589 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-04-08 09:27:29,589 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-08 09:27:29,589 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 09:27:29,589 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 09:27:29,589 INFO L74 IsIncluded]: Start isIncluded. First operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand 0 states. [2022-04-08 09:27:29,589 INFO L87 Difference]: Start difference. First operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand 0 states. [2022-04-08 09:27:29,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 09:27:29,589 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-04-08 09:27:29,589 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-08 09:27:29,589 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 09:27:29,589 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 09:27:29,589 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 09:27:29,589 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 09:27:29,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-08 09:27:29,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-04-08 09:27:29,590 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2022-04-08 09:27:29,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 09:27:29,590 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-04-08 09:27:29,590 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 09:27:29,590 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 0 states and 0 transitions. [2022-04-08 09:27:29,590 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 09:27:29,590 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-08 09:27:29,590 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 09:27:29,592 INFO L788 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (17 of 18 remaining) [2022-04-08 09:27:29,592 INFO L788 garLoopResultBuilder]: Registering result SAFE for location mainErr1ASSERT_VIOLATIONERROR_FUNCTION (16 of 18 remaining) [2022-04-08 09:27:29,592 INFO L788 garLoopResultBuilder]: Registering result SAFE for location mainErr2ASSERT_VIOLATIONERROR_FUNCTION (15 of 18 remaining) [2022-04-08 09:27:29,592 INFO L788 garLoopResultBuilder]: Registering result SAFE for location mainErr3ASSERT_VIOLATIONERROR_FUNCTION (14 of 18 remaining) [2022-04-08 09:27:29,592 INFO L788 garLoopResultBuilder]: Registering result SAFE for location mainErr4ASSERT_VIOLATIONERROR_FUNCTION (13 of 18 remaining) [2022-04-08 09:27:29,592 INFO L788 garLoopResultBuilder]: Registering result SAFE for location mainErr5ASSERT_VIOLATIONERROR_FUNCTION (12 of 18 remaining) [2022-04-08 09:27:29,592 INFO L788 garLoopResultBuilder]: Registering result SAFE for location mainErr6ASSERT_VIOLATIONERROR_FUNCTION (11 of 18 remaining) [2022-04-08 09:27:29,592 INFO L788 garLoopResultBuilder]: Registering result SAFE for location mainErr7ASSERT_VIOLATIONERROR_FUNCTION (10 of 18 remaining) [2022-04-08 09:27:29,593 INFO L788 garLoopResultBuilder]: Registering result SAFE for location mainErr8ASSERT_VIOLATIONERROR_FUNCTION (9 of 18 remaining) [2022-04-08 09:27:29,593 INFO L788 garLoopResultBuilder]: Registering result SAFE for location mainErr9ASSERT_VIOLATIONERROR_FUNCTION (8 of 18 remaining) [2022-04-08 09:27:29,593 INFO L788 garLoopResultBuilder]: Registering result SAFE for location mainErr10ASSERT_VIOLATIONERROR_FUNCTION (7 of 18 remaining) [2022-04-08 09:27:29,593 INFO L788 garLoopResultBuilder]: Registering result SAFE for location mainErr11ASSERT_VIOLATIONERROR_FUNCTION (6 of 18 remaining) [2022-04-08 09:27:29,593 INFO L788 garLoopResultBuilder]: Registering result SAFE for location mainErr12ASSERT_VIOLATIONERROR_FUNCTION (5 of 18 remaining) [2022-04-08 09:27:29,593 INFO L788 garLoopResultBuilder]: Registering result SAFE for location mainErr13ASSERT_VIOLATIONERROR_FUNCTION (4 of 18 remaining) [2022-04-08 09:27:29,593 INFO L788 garLoopResultBuilder]: Registering result SAFE for location mainErr14ASSERT_VIOLATIONERROR_FUNCTION (3 of 18 remaining) [2022-04-08 09:27:29,593 INFO L788 garLoopResultBuilder]: Registering result SAFE for location mainErr15ASSERT_VIOLATIONERROR_FUNCTION (2 of 18 remaining) [2022-04-08 09:27:29,593 INFO L788 garLoopResultBuilder]: Registering result SAFE for location mainErr16ASSERT_VIOLATIONERROR_FUNCTION (1 of 18 remaining) [2022-04-08 09:27:29,593 INFO L788 garLoopResultBuilder]: Registering result SAFE for location mainErr17ASSERT_VIOLATIONERROR_FUNCTION (0 of 18 remaining) [2022-04-08 09:27:29,593 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-04-08 09:27:29,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-04-08 09:27:41,778 WARN L232 SmtUtils]: Spent 7.18s on a formula simplification. DAG size of input: 62 DAG size of output: 62 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-04-08 09:28:00,875 WARN L232 SmtUtils]: Spent 15.99s on a formula simplification. DAG size of input: 76 DAG size of output: 78 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-04-08 09:28:05,133 INFO L882 garLoopResultBuilder]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2022-04-08 09:28:05,134 INFO L882 garLoopResultBuilder]: For program point reach_errorENTRY(line 4) no Hoare annotation was computed. [2022-04-08 09:28:05,134 INFO L882 garLoopResultBuilder]: For program point reach_errorFINAL(line 4) no Hoare annotation was computed. [2022-04-08 09:28:05,134 INFO L882 garLoopResultBuilder]: For program point assume_abort_if_notENTRY(lines 6 8) no Hoare annotation was computed. [2022-04-08 09:28:05,134 INFO L882 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2022-04-08 09:28:05,134 INFO L882 garLoopResultBuilder]: For program point L7-2(lines 6 8) no Hoare annotation was computed. [2022-04-08 09:28:05,134 INFO L882 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 6 8) no Hoare annotation was computed. [2022-04-08 09:28:05,134 INFO L878 garLoopResultBuilder]: At program point mainErr3ASSERT_VIOLATIONERROR_FUNCTION(line 114) the Hoare annotation is: false [2022-04-08 09:28:05,134 INFO L878 garLoopResultBuilder]: At program point L126(line 126) the Hoare annotation is: false [2022-04-08 09:28:05,134 INFO L885 garLoopResultBuilder]: At program point mainEXIT(lines 15 402) the Hoare annotation is: true [2022-04-08 09:28:05,134 INFO L878 garLoopResultBuilder]: At program point L52(line 52) the Hoare annotation is: false [2022-04-08 09:28:05,134 INFO L878 garLoopResultBuilder]: At program point L176(line 176) the Hoare annotation is: false [2022-04-08 09:28:05,134 INFO L878 garLoopResultBuilder]: At program point L366(line 366) the Hoare annotation is: false [2022-04-08 09:28:05,134 INFO L878 garLoopResultBuilder]: At program point L333(line 333) the Hoare annotation is: false [2022-04-08 09:28:05,134 INFO L878 garLoopResultBuilder]: At program point L234(lines 234 242) the Hoare annotation is: (let ((.cse0 (not (= main_~__VERIFIER_assert__cond~10 0))) (.cse1 (not (= main_~__VERIFIER_assert__cond~11 0))) (.cse2 (<= 1 main_~main__t~0))) (or (and .cse0 .cse1 (not (<= main_~main__tagbuf_len~0 main_~main__t~0)) .cse2) (and (<= main_~main__t~0 1) .cse0 .cse1 (not (<= main_~main__tagbuf_len~0 0)) .cse2))) [2022-04-08 09:28:05,134 INFO L878 garLoopResultBuilder]: At program point mainErr11ASSERT_VIOLATIONERROR_FUNCTION(line 278) the Hoare annotation is: false [2022-04-08 09:28:05,135 INFO L878 garLoopResultBuilder]: At program point L152(lines 152 160) the Hoare annotation is: (and (not (= main_~__VERIFIER_assert__cond~4 0)) (not (= main_~__VERIFIER_assert__cond~7 0)) (not (= main_~__VERIFIER_assert__cond~5 0)) (not (= main_~__VERIFIER_assert__cond~6 0)) (<= 1 main_~main__t~0) (<= main_~main__t~0 main_~main__tagbuf_len~0)) [2022-04-08 09:28:05,135 INFO L878 garLoopResultBuilder]: At program point mainErr6ASSERT_VIOLATIONERROR_FUNCTION(line 154) the Hoare annotation is: false [2022-04-08 09:28:05,135 INFO L878 garLoopResultBuilder]: At program point L309(line 309) the Hoare annotation is: false [2022-04-08 09:28:05,135 INFO L878 garLoopResultBuilder]: At program point L20(lines 20 401) the Hoare annotation is: (and (= |old(~__return_305~0)| ~__return_305~0) (= |old(~__tmp_259_0~0)| ~__tmp_259_0~0) (= |old(~__tmp_383_0~0)| ~__tmp_383_0~0)) [2022-04-08 09:28:05,135 INFO L878 garLoopResultBuilder]: At program point L276(lines 276 391) the Hoare annotation is: (and (= |old(~__return_305~0)| ~__return_305~0) (not (= main_~__VERIFIER_assert__cond~13 0)) (= |old(~__tmp_259_0~0)| ~__tmp_259_0~0) (= main_~main__t~0 0) (= |old(~__tmp_383_0~0)| ~__tmp_383_0~0) (< 0 main_~main__tagbuf_len~0)) [2022-04-08 09:28:05,135 INFO L878 garLoopResultBuilder]: At program point mainErr14ASSERT_VIOLATIONERROR_FUNCTION(line 333) the Hoare annotation is: false [2022-04-08 09:28:05,135 INFO L878 garLoopResultBuilder]: At program point L70(lines 70 94) the Hoare annotation is: (and (<= 1 main_~main__t~0) (not (= main_~__VERIFIER_assert__cond~2 0)) (<= main_~main__t~0 main_~main__tagbuf_len~0)) [2022-04-08 09:28:05,135 INFO L878 garLoopResultBuilder]: At program point L384(lines 282 391) the Hoare annotation is: (and (let ((.cse1 (= main_~main__t~0 0))) (let ((.cse0 (let ((.cse2 (let ((.cse3 (not (= main_~__VERIFIER_assert__cond~13 0)))) (or (and .cse3 (<= 1 main_~main__t~0)) (and .cse3 .cse1))))) (or (and .cse2 (not (= main_~__VERIFIER_assert__cond~18 0))) (and .cse2 .cse1))))) (or (and .cse0 (not (= main_~__VERIFIER_assert__cond~19 0))) (and .cse0 .cse1)))) (not (<= main_~main__tagbuf_len~0 main_~main__t~0))) [2022-04-08 09:28:05,135 INFO L878 garLoopResultBuilder]: At program point L351(lines 32 395) the Hoare annotation is: (or (and (not (= main_~__VERIFIER_assert__cond~17 0)) (let ((.cse0 (not (= main_~__VERIFIER_assert__cond~13 0))) (.cse1 (not (= main_~__VERIFIER_assert__cond~16 0)))) (or (and (<= main_~main__t~0 1) .cse0 .cse1) (and .cse0 .cse1 (not (= main_~__VERIFIER_assert__cond~19 0))))) (not (<= main_~main__tagbuf_len~0 main_~main__t~0)) (<= 1 main_~main__t~0)) (and (= main_~main__t~0 0) (< 0 main_~main__tagbuf_len~0))) [2022-04-08 09:28:05,135 INFO L878 garLoopResultBuilder]: At program point L186(lines 186 196) the Hoare annotation is: (and (not (= main_~__VERIFIER_assert__cond~9 0)) (not (= main_~__VERIFIER_assert__cond~8 0)) (not (<= main_~main__tagbuf_len~0 main_~main__t~0)) (<= 1 main_~main__t~0)) [2022-04-08 09:28:05,135 INFO L878 garLoopResultBuilder]: At program point L376(lines 376 385) the Hoare annotation is: (and (not (= main_~__VERIFIER_assert__cond~13 0)) (not (<= main_~main__tagbuf_len~0 main_~main__t~0)) (not (= main_~__VERIFIER_assert__cond~18 0)) (<= 1 main_~main__t~0) (not (= main_~__VERIFIER_assert__cond~19 0))) [2022-04-08 09:28:05,135 INFO L878 garLoopResultBuilder]: At program point mainErr5ASSERT_VIOLATIONERROR_FUNCTION(line 142) the Hoare annotation is: false [2022-04-08 09:28:05,135 INFO L878 garLoopResultBuilder]: At program point L343(lines 343 352) the Hoare annotation is: (and (not (= main_~__VERIFIER_assert__cond~17 0)) (let ((.cse0 (not (= main_~__VERIFIER_assert__cond~13 0))) (.cse1 (not (= main_~__VERIFIER_assert__cond~16 0)))) (or (and (<= main_~main__t~0 1) .cse0 .cse1) (and .cse0 .cse1 (not (= main_~__VERIFIER_assert__cond~19 0))))) (not (<= main_~main__tagbuf_len~0 main_~main__t~0)) (<= 1 main_~main__t~0)) [2022-04-08 09:28:05,135 INFO L878 garLoopResultBuilder]: At program point L112(lines 112 203) the Hoare annotation is: (and (not (= main_~__VERIFIER_assert__cond~4 0)) (not (<= main_~main__tagbuf_len~0 main_~main__t~0)) (<= 1 main_~main__t~0)) [2022-04-08 09:28:05,136 INFO L885 garLoopResultBuilder]: At program point mainFINAL(lines 15 402) the Hoare annotation is: true [2022-04-08 09:28:05,136 INFO L878 garLoopResultBuilder]: At program point L236(line 236) the Hoare annotation is: false [2022-04-08 09:28:05,136 INFO L878 garLoopResultBuilder]: At program point mainErr13ASSERT_VIOLATIONERROR_FUNCTION(line 309) the Hoare annotation is: false [2022-04-08 09:28:05,136 INFO L878 garLoopResultBuilder]: At program point L195(lines 56 253) the Hoare annotation is: (and (<= 1 main_~main__t~0) (<= main_~main__t~0 main_~main__tagbuf_len~0)) [2022-04-08 09:28:05,136 INFO L878 garLoopResultBuilder]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 52) the Hoare annotation is: false [2022-04-08 09:28:05,136 INFO L878 garLoopResultBuilder]: At program point mainENTRY(lines 15 402) the Hoare annotation is: (and (= |old(~__return_305~0)| ~__return_305~0) (= |old(~__tmp_259_0~0)| ~__tmp_259_0~0) (= |old(~__tmp_383_0~0)| ~__tmp_383_0~0)) [2022-04-08 09:28:05,136 INFO L878 garLoopResultBuilder]: At program point L154(line 154) the Hoare annotation is: false [2022-04-08 09:28:05,136 INFO L878 garLoopResultBuilder]: At program point L278(line 278) the Hoare annotation is: false [2022-04-08 09:28:05,136 INFO L878 garLoopResultBuilder]: At program point mainErr8ASSERT_VIOLATIONERROR_FUNCTION(line 188) the Hoare annotation is: false [2022-04-08 09:28:05,136 INFO L878 garLoopResultBuilder]: At program point L105(lines 105 209) the Hoare annotation is: (and (not (<= main_~main__tagbuf_len~0 main_~main__t~0)) (<= 1 main_~main__t~0)) [2022-04-08 09:28:05,136 INFO L878 garLoopResultBuilder]: At program point L72(line 72) the Hoare annotation is: false [2022-04-08 09:28:05,136 INFO L878 garLoopResultBuilder]: At program point L39(lines 39 255) the Hoare annotation is: (and (= |old(~__return_305~0)| ~__return_305~0) (= |old(~__tmp_259_0~0)| ~__tmp_259_0~0) (= main_~main__t~0 0) (= |old(~__tmp_383_0~0)| ~__tmp_383_0~0) (< 0 main_~main__tagbuf_len~0)) [2022-04-08 09:28:05,136 INFO L878 garLoopResultBuilder]: At program point L295(lines 295 317) the Hoare annotation is: (and (not (= main_~__VERIFIER_assert__cond~13 0)) (not (= main_~__VERIFIER_assert__cond~14 0)) (<= 1 main_~main__t~0) (<= main_~main__t~0 main_~main__tagbuf_len~0)) [2022-04-08 09:28:05,136 INFO L878 garLoopResultBuilder]: At program point mainErr16ASSERT_VIOLATIONERROR_FUNCTION(line 366) the Hoare annotation is: false [2022-04-08 09:28:05,136 INFO L878 garLoopResultBuilder]: At program point L188(line 188) the Hoare annotation is: false [2022-04-08 09:28:05,136 INFO L878 garLoopResultBuilder]: At program point L378(line 378) the Hoare annotation is: false [2022-04-08 09:28:05,136 INFO L878 garLoopResultBuilder]: At program point L345(line 345) the Hoare annotation is: false [2022-04-08 09:28:05,136 INFO L878 garLoopResultBuilder]: At program point mainErr7ASSERT_VIOLATIONERROR_FUNCTION(line 176) the Hoare annotation is: false [2022-04-08 09:28:05,136 INFO L878 garLoopResultBuilder]: At program point L114(line 114) the Hoare annotation is: false [2022-04-08 09:28:05,137 INFO L878 garLoopResultBuilder]: At program point mainErr15ASSERT_VIOLATIONERROR_FUNCTION(line 345) the Hoare annotation is: false [2022-04-08 09:28:05,137 INFO L878 garLoopResultBuilder]: At program point L32(lines 32 395) the Hoare annotation is: (and (= |old(~__return_305~0)| ~__return_305~0) (= |old(~__tmp_259_0~0)| ~__tmp_259_0~0) (= main_~main__t~0 0) (= |old(~__tmp_383_0~0)| ~__tmp_383_0~0) (< 0 main_~main__tagbuf_len~0)) [2022-04-08 09:28:05,137 INFO L878 garLoopResultBuilder]: At program point L288(lines 288 390) the Hoare annotation is: (and (let ((.cse0 (not (= main_~__VERIFIER_assert__cond~13 0))) (.cse1 (<= 1 main_~main__t~0))) (or (and (<= main_~main__t~0 1) .cse0 .cse1) (and .cse0 .cse1 (not (= main_~__VERIFIER_assert__cond~19 0))))) (<= main_~main__t~0 main_~main__tagbuf_len~0)) [2022-04-08 09:28:05,137 INFO L878 garLoopResultBuilder]: At program point mainErr2ASSERT_VIOLATIONERROR_FUNCTION(line 84) the Hoare annotation is: false [2022-04-08 09:28:05,137 INFO L878 garLoopResultBuilder]: At program point L222(lines 222 244) the Hoare annotation is: (let ((.cse0 (not (= main_~__VERIFIER_assert__cond~10 0))) (.cse1 (<= 1 main_~main__t~0))) (or (and (<= main_~main__t~0 1) .cse0 (not (<= main_~main__tagbuf_len~0 0)) .cse1) (and .cse0 (not (<= main_~main__tagbuf_len~0 main_~main__t~0)) .cse1))) [2022-04-08 09:28:05,137 INFO L878 garLoopResultBuilder]: At program point L24(lines 24 396) the Hoare annotation is: (and (= |old(~__return_305~0)| ~__return_305~0) (= |old(~__tmp_259_0~0)| ~__tmp_259_0~0) (= main_~main__t~0 0) (= |old(~__tmp_383_0~0)| ~__tmp_383_0~0) (<= main_~main__t~0 main_~main__tagbuf_len~0)) [2022-04-08 09:28:05,137 INFO L878 garLoopResultBuilder]: At program point L82(lines 82 92) the Hoare annotation is: (and (<= 1 main_~main__t~0) (not (= main_~__VERIFIER_assert__cond~3 0)) (not (= main_~__VERIFIER_assert__cond~2 0)) (<= main_~main__t~0 main_~main__tagbuf_len~0)) [2022-04-08 09:28:05,137 INFO L878 garLoopResultBuilder]: At program point L140(lines 140 162) the Hoare annotation is: (and (not (= main_~__VERIFIER_assert__cond~4 0)) (not (= main_~__VERIFIER_assert__cond~5 0)) (not (= main_~__VERIFIER_assert__cond~6 0)) (<= 1 main_~main__t~0) (<= main_~main__t~0 main_~main__tagbuf_len~0)) [2022-04-08 09:28:05,137 INFO L878 garLoopResultBuilder]: At program point mainErr10ASSERT_VIOLATIONERROR_FUNCTION(line 236) the Hoare annotation is: false [2022-04-08 09:28:05,137 INFO L878 garLoopResultBuilder]: At program point L297(line 297) the Hoare annotation is: false [2022-04-08 09:28:05,137 INFO L878 garLoopResultBuilder]: At program point mainErr1ASSERT_VIOLATIONERROR_FUNCTION(line 72) the Hoare annotation is: false [2022-04-08 09:28:05,137 INFO L878 garLoopResultBuilder]: At program point L124(lines 124 201) the Hoare annotation is: (and (not (= main_~__VERIFIER_assert__cond~4 0)) (not (= main_~__VERIFIER_assert__cond~5 0)) (not (<= main_~main__tagbuf_len~0 main_~main__t~0)) (<= 1 main_~main__t~0)) [2022-04-08 09:28:05,137 INFO L885 garLoopResultBuilder]: At program point L314(lines 32 395) the Hoare annotation is: true [2022-04-08 09:28:05,137 INFO L878 garLoopResultBuilder]: At program point L215(lines 215 250) the Hoare annotation is: (and (not (<= main_~main__tagbuf_len~0 main_~main__t~0)) (<= 1 main_~main__t~0)) [2022-04-08 09:28:05,137 INFO L878 garLoopResultBuilder]: At program point L50(lines 50 253) the Hoare annotation is: (and (not (= main_~__VERIFIER_assert__cond~1 0)) (= |old(~__return_305~0)| ~__return_305~0) (= |old(~__tmp_259_0~0)| ~__tmp_259_0~0) (= main_~main__t~0 0) (= |old(~__tmp_383_0~0)| ~__tmp_383_0~0) (< 0 main_~main__tagbuf_len~0)) [2022-04-08 09:28:05,137 INFO L878 garLoopResultBuilder]: At program point L174(lines 174 198) the Hoare annotation is: (and (not (= main_~__VERIFIER_assert__cond~8 0)) (not (<= main_~main__tagbuf_len~0 main_~main__t~0)) (<= 1 main_~main__t~0)) [2022-04-08 09:28:05,137 INFO L878 garLoopResultBuilder]: At program point mainErr9ASSERT_VIOLATIONERROR_FUNCTION(line 224) the Hoare annotation is: false [2022-04-08 09:28:05,138 INFO L878 garLoopResultBuilder]: At program point L364(lines 364 387) the Hoare annotation is: (and (let ((.cse0 (not (= main_~__VERIFIER_assert__cond~13 0))) (.cse1 (not (= main_~__VERIFIER_assert__cond~18 0))) (.cse2 (<= 1 main_~main__t~0))) (or (and (<= main_~main__t~0 1) .cse0 .cse1 .cse2) (and .cse0 .cse1 .cse2 (not (= main_~__VERIFIER_assert__cond~19 0))))) (not (<= main_~main__tagbuf_len~0 main_~main__t~0))) [2022-04-08 09:28:05,138 INFO L878 garLoopResultBuilder]: At program point L331(lines 331 354) the Hoare annotation is: (and (let ((.cse0 (not (= main_~__VERIFIER_assert__cond~13 0))) (.cse1 (not (= main_~__VERIFIER_assert__cond~16 0)))) (or (and (<= main_~main__t~0 1) .cse0 .cse1) (and .cse0 .cse1 (not (= main_~__VERIFIER_assert__cond~19 0))))) (not (<= main_~main__tagbuf_len~0 main_~main__t~0)) (<= 1 main_~main__t~0)) [2022-04-08 09:28:05,138 INFO L878 garLoopResultBuilder]: At program point L265(lines 265 393) the Hoare annotation is: (and (= |old(~__return_305~0)| ~__return_305~0) (= |old(~__tmp_259_0~0)| ~__tmp_259_0~0) (= main_~main__t~0 0) (= |old(~__tmp_383_0~0)| ~__tmp_383_0~0) (< 0 main_~main__tagbuf_len~0)) [2022-04-08 09:28:05,138 INFO L878 garLoopResultBuilder]: At program point mainErr17ASSERT_VIOLATIONERROR_FUNCTION(line 378) the Hoare annotation is: false [2022-04-08 09:28:05,138 INFO L878 garLoopResultBuilder]: At program point L133(lines 133 200) the Hoare annotation is: (and (not (= main_~__VERIFIER_assert__cond~4 0)) (not (= main_~__VERIFIER_assert__cond~5 0)) (<= 1 main_~main__t~0) (<= main_~main__t~0 main_~main__tagbuf_len~0)) [2022-04-08 09:28:05,138 INFO L878 garLoopResultBuilder]: At program point L224(line 224) the Hoare annotation is: false [2022-04-08 09:28:05,138 INFO L878 garLoopResultBuilder]: At program point mainErr4ASSERT_VIOLATIONERROR_FUNCTION(line 126) the Hoare annotation is: false [2022-04-08 09:28:05,138 INFO L878 garLoopResultBuilder]: At program point L249(lines 101 251) the Hoare annotation is: (and (not (<= main_~main__tagbuf_len~0 main_~main__t~0)) (<= 1 main_~main__t~0)) [2022-04-08 09:28:05,138 INFO L878 garLoopResultBuilder]: At program point L84(line 84) the Hoare annotation is: false [2022-04-08 09:28:05,138 INFO L878 garLoopResultBuilder]: At program point L307(lines 307 315) the Hoare annotation is: (and (not (= main_~__VERIFIER_assert__cond~13 0)) (not (= main_~__VERIFIER_assert__cond~14 0)) (<= 1 main_~main__t~0) (<= main_~main__t~0 main_~main__tagbuf_len~0) (not (= main_~__VERIFIER_assert__cond~15 0))) [2022-04-08 09:28:05,138 INFO L878 garLoopResultBuilder]: At program point mainErr12ASSERT_VIOLATIONERROR_FUNCTION(line 297) the Hoare annotation is: false [2022-04-08 09:28:05,138 INFO L878 garLoopResultBuilder]: At program point L142(line 142) the Hoare annotation is: false [2022-04-08 09:28:05,138 INFO L878 garLoopResultBuilder]: At program point L101(lines 101 251) the Hoare annotation is: (and (not (<= main_~main__tagbuf_len~0 main_~main__t~0)) (<= 1 main_~main__t~0)) [2022-04-08 09:28:05,138 INFO L878 garLoopResultBuilder]: At program point L324(lines 324 389) the Hoare annotation is: (and (not (<= main_~main__tagbuf_len~0 main_~main__t~0)) (let ((.cse0 (not (= main_~__VERIFIER_assert__cond~13 0))) (.cse1 (<= 1 main_~main__t~0))) (or (and (<= main_~main__t~0 1) .cse0 .cse1) (and .cse0 .cse1 (not (= main_~__VERIFIER_assert__cond~19 0)))))) [2022-04-08 09:28:05,138 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2022-04-08 09:28:05,138 INFO L878 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |old(~__return_305~0)| ~__return_305~0) (= |old(~__tmp_259_0~0)| ~__tmp_259_0~0) (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__tmp_383_0~0)| ~__tmp_383_0~0) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-04-08 09:28:05,138 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2022-04-08 09:28:05,138 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2022-04-08 09:28:05,138 INFO L885 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-04-08 09:28:05,139 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-04-08 09:28:05,139 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2022-04-08 09:28:05,141 INFO L719 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2] [2022-04-08 09:28:05,142 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-04-08 09:28:05,144 WARN L170 areAnnotationChecker]: reach_errorENTRY has no Hoare annotation [2022-04-08 09:28:05,145 WARN L170 areAnnotationChecker]: assume_abort_if_notENTRY has no Hoare annotation [2022-04-08 09:28:05,145 WARN L170 areAnnotationChecker]: reach_errorFINAL has no Hoare annotation [2022-04-08 09:28:05,146 WARN L170 areAnnotationChecker]: L7 has no Hoare annotation [2022-04-08 09:28:05,146 WARN L170 areAnnotationChecker]: L7 has no Hoare annotation [2022-04-08 09:28:05,146 WARN L170 areAnnotationChecker]: L7-2 has no Hoare annotation [2022-04-08 09:28:05,189 INFO L163 areAnnotationChecker]: CFG has 109 edges. 109 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2022-04-08 09:28:05,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.04 09:28:05 BoogieIcfgContainer [2022-04-08 09:28:05,197 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-08 09:28:05,198 INFO L158 Benchmark]: Toolchain (without parser) took 52129.80ms. Allocated memory was 200.3MB in the beginning and 508.6MB in the end (delta: 308.3MB). Free memory was 149.9MB in the beginning and 354.4MB in the end (delta: -204.5MB). Peak memory consumption was 284.1MB. Max. memory is 8.0GB. [2022-04-08 09:28:05,198 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 200.3MB. Free memory was 166.7MB in the beginning and 166.5MB in the end (delta: 151.8kB). There was no memory consumed. Max. memory is 8.0GB. [2022-04-08 09:28:05,198 INFO L158 Benchmark]: CACSL2BoogieTranslator took 243.34ms. Allocated memory is still 200.3MB. Free memory was 149.8MB in the beginning and 170.1MB in the end (delta: -20.3MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-04-08 09:28:05,198 INFO L158 Benchmark]: Boogie Preprocessor took 40.82ms. Allocated memory is still 200.3MB. Free memory was 170.1MB in the beginning and 168.4MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-08 09:28:05,199 INFO L158 Benchmark]: RCFGBuilder took 349.87ms. Allocated memory is still 200.3MB. Free memory was 168.4MB in the beginning and 151.2MB in the end (delta: 17.2MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2022-04-08 09:28:05,199 INFO L158 Benchmark]: TraceAbstraction took 51485.43ms. Allocated memory was 200.3MB in the beginning and 508.6MB in the end (delta: 308.3MB). Free memory was 150.8MB in the beginning and 355.0MB in the end (delta: -204.2MB). Peak memory consumption was 286.4MB. Max. memory is 8.0GB. [2022-04-08 09:28:05,199 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 200.3MB. Free memory was 166.7MB in the beginning and 166.5MB in the end (delta: 151.8kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 243.34ms. Allocated memory is still 200.3MB. Free memory was 149.8MB in the beginning and 170.1MB in the end (delta: -20.3MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 40.82ms. Allocated memory is still 200.3MB. Free memory was 170.1MB in the beginning and 168.4MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 349.87ms. Allocated memory is still 200.3MB. Free memory was 168.4MB in the beginning and 151.2MB in the end (delta: 17.2MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * TraceAbstraction took 51485.43ms. Allocated memory was 200.3MB in the beginning and 508.6MB in the end (delta: 308.3MB). Free memory was 150.8MB in the beginning and 355.0MB in the end (delta: -204.2MB). Peak memory consumption was 286.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 52]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 72]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 84]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 114]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 126]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 142]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 154]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 176]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 188]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 224]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 236]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 278]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 297]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 309]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 333]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 345]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 366]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 378]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 87 locations, 18 error locations. Started 1 CEGAR loops. OverallTime: 51.4s, OverallIterations: 23, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 8.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 35.5s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1478 SdHoareTripleChecker+Valid, 2.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1478 mSDsluCounter, 2875 SdHoareTripleChecker+Invalid, 2.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1782 mSDsCounter, 162 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3333 IncrementalHoareTripleChecker+Invalid, 3495 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 162 mSolverCounterUnsat, 1093 mSDtfsCounter, 3333 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 332 GetRequests, 147 SyntacticMatches, 10 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=80occurred in iteration=0, InterpolantAutomatonStates: 177, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.4s AutomataMinimizationTime, 23 MinimizatonAttempts, 432 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 80 LocationsWithAnnotation, 80 PreInvPairs, 97 NumberOfFragments, 799 HoareAnnotationTreeSize, 80 FomulaSimplifications, 1699038 FormulaSimplificationTreeSizeReduction, 34.3s HoareSimplificationTime, 80 FomulaSimplificationsInter, 2584793 FormulaSimplificationTreeSizeReductionInter, 1.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 18 specifications checked. All of them hold - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: (((!(__VERIFIER_assert__cond == 0) && (((main__t <= 1 && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) || ((!(__VERIFIER_assert__cond == 0) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)))) && !(main__tagbuf_len <= main__t)) && 1 <= main__t) || (main__t == 0 && 0 < main__tagbuf_len) - InvariantResult [Line: 101]: Loop Invariant Derived loop invariant: !(main__tagbuf_len <= main__t) && 1 <= main__t - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 282]: Loop Invariant Derived loop invariant: ((((((!(__VERIFIER_assert__cond == 0) && 1 <= main__t) || (!(__VERIFIER_assert__cond == 0) && main__t == 0)) && !(__VERIFIER_assert__cond == 0)) || (((!(__VERIFIER_assert__cond == 0) && 1 <= main__t) || (!(__VERIFIER_assert__cond == 0) && main__t == 0)) && main__t == 0)) && !(__VERIFIER_assert__cond == 0)) || (((((!(__VERIFIER_assert__cond == 0) && 1 <= main__t) || (!(__VERIFIER_assert__cond == 0) && main__t == 0)) && !(__VERIFIER_assert__cond == 0)) || (((!(__VERIFIER_assert__cond == 0) && 1 <= main__t) || (!(__VERIFIER_assert__cond == 0) && main__t == 0)) && main__t == 0)) && main__t == 0)) && !(main__tagbuf_len <= main__t) - InvariantResult [Line: 56]: Loop Invariant Derived loop invariant: 1 <= main__t && main__t <= main__tagbuf_len - ProcedureContractResult [Line: 15]: Procedure Contract for main Derived contract for procedure main: 1 RESULT: Ultimate proved your program to be correct! [2022-04-08 09:28:05,224 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...