/usr/bin/java -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/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf -i ../../../trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-7968f31 [2022-03-17 19:38:17,288 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-17 19:38:17,290 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-17 19:38:17,331 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-17 19:38:17,331 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-17 19:38:17,332 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-17 19:38:17,333 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-17 19:38:17,335 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-17 19:38:17,336 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-17 19:38:17,337 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-17 19:38:17,338 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-17 19:38:17,339 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-17 19:38:17,339 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-17 19:38:17,340 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-17 19:38:17,341 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-17 19:38:17,341 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-17 19:38:17,342 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-17 19:38:17,343 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-17 19:38:17,344 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-17 19:38:17,346 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-17 19:38:17,347 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-17 19:38:17,354 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-17 19:38:17,356 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-17 19:38:17,359 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-17 19:38:17,362 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-17 19:38:17,365 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-03-17 19:38:17,365 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-03-17 19:38:17,366 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-03-17 19:38:17,366 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-03-17 19:38:17,367 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-03-17 19:38:17,367 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-03-17 19:38:17,368 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-03-17 19:38:17,368 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-03-17 19:38:17,369 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-03-17 19:38:17,369 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-03-17 19:38:17,374 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-03-17 19:38:17,375 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-03-17 19:38:17,375 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-03-17 19:38:17,375 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-03-17 19:38:17,376 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-17 19:38:17,377 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-17 19:38:17,379 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-17 19:38:17,379 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf [2022-03-17 19:38:17,415 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-17 19:38:17,415 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-17 19:38:17,417 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-17 19:38:17,417 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-17 19:38:17,418 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-17 19:38:17,418 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-17 19:38:17,418 INFO L138 SettingsManager]: * Use SBE=true [2022-03-17 19:38:17,419 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-17 19:38:17,419 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-17 19:38:17,419 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-17 19:38:17,419 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-17 19:38:17,419 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-17 19:38:17,419 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-17 19:38:17,420 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-17 19:38:17,420 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-17 19:38:17,420 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-17 19:38:17,420 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-17 19:38:17,420 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-17 19:38:17,421 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-17 19:38:17,421 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-17 19:38:17,421 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-17 19:38:17,421 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-17 19:38:17,421 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-17 19:38:17,421 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-17 19:38:17,421 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-17 19:38:17,422 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-17 19:38:17,422 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-03-17 19:38:17,422 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-03-17 19:38:17,423 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-17 19:38:17,423 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_QVASR 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-17 19:38:17,609 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-17 19:38:17,626 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-17 19:38:17,628 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-17 19:38:17,628 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-17 19:38:17,629 INFO L275 PluginConnector]: CDTParser initialized [2022-03-17 19:38:17,630 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+nlh-reducer.c [2022-03-17 19:38:17,668 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0dfec034a/40ef795ee12c4427ac664573d9897e1e/FLAG73406eb15 [2022-03-17 19:38:18,033 INFO L306 CDTParser]: Found 1 translation units. [2022-03-17 19:38:18,033 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+nlh-reducer.c [2022-03-17 19:38:18,039 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0dfec034a/40ef795ee12c4427ac664573d9897e1e/FLAG73406eb15 [2022-03-17 19:38:18,051 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0dfec034a/40ef795ee12c4427ac664573d9897e1e [2022-03-17 19:38:18,053 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-17 19:38:18,054 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-17 19:38:18,059 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-17 19:38:18,059 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-17 19:38:18,063 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-17 19:38:18,063 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:38:18" (1/1) ... [2022-03-17 19:38:18,064 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7151cda2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:38:18, skipping insertion in model container [2022-03-17 19:38:18,064 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:38:18" (1/1) ... [2022-03-17 19:38:18,070 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-17 19:38:18,110 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-17 19:38:18,253 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+nlh-reducer.c[1123,1136] [2022-03-17 19:38:18,256 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+nlh-reducer.c[1338,1351] [2022-03-17 19:38:18,257 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+nlh-reducer.c[1654,1667] [2022-03-17 19:38:18,258 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+nlh-reducer.c[1869,1882] [2022-03-17 19:38:18,260 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+nlh-reducer.c[2402,2415] [2022-03-17 19:38:18,261 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+nlh-reducer.c[2617,2630] [2022-03-17 19:38:18,263 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+nlh-reducer.c[2919,2932] [2022-03-17 19:38:18,264 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+nlh-reducer.c[3134,3147] [2022-03-17 19:38:18,265 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+nlh-reducer.c[3404,3417] [2022-03-17 19:38:18,266 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+nlh-reducer.c[3622,3635] [2022-03-17 19:38:18,268 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+nlh-reducer.c[4106,4119] [2022-03-17 19:38:18,269 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+nlh-reducer.c[4324,4337] [2022-03-17 19:38:18,271 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+nlh-reducer.c[4820,4833] [2022-03-17 19:38:18,273 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+nlh-reducer.c[5221,5234] [2022-03-17 19:38:18,274 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+nlh-reducer.c[5439,5452] [2022-03-17 19:38:18,276 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+nlh-reducer.c[5881,5894] [2022-03-17 19:38:18,277 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+nlh-reducer.c[6099,6112] [2022-03-17 19:38:18,278 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-17 19:38:18,284 INFO L203 MainTranslator]: Completed pre-run [2022-03-17 19:38:18,296 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+nlh-reducer.c[1123,1136] [2022-03-17 19:38:18,297 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+nlh-reducer.c[1338,1351] [2022-03-17 19:38:18,298 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+nlh-reducer.c[1654,1667] [2022-03-17 19:38:18,299 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+nlh-reducer.c[1869,1882] [2022-03-17 19:38:18,300 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+nlh-reducer.c[2402,2415] [2022-03-17 19:38:18,301 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+nlh-reducer.c[2617,2630] [2022-03-17 19:38:18,303 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+nlh-reducer.c[2919,2932] [2022-03-17 19:38:18,303 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+nlh-reducer.c[3134,3147] [2022-03-17 19:38:18,305 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+nlh-reducer.c[3404,3417] [2022-03-17 19:38:18,305 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+nlh-reducer.c[3622,3635] [2022-03-17 19:38:18,307 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+nlh-reducer.c[4106,4119] [2022-03-17 19:38:18,308 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+nlh-reducer.c[4324,4337] [2022-03-17 19:38:18,310 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+nlh-reducer.c[4820,4833] [2022-03-17 19:38:18,311 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+nlh-reducer.c[5221,5234] [2022-03-17 19:38:18,312 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+nlh-reducer.c[5439,5452] [2022-03-17 19:38:18,313 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+nlh-reducer.c[5881,5894] [2022-03-17 19:38:18,314 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+nlh-reducer.c[6099,6112] [2022-03-17 19:38:18,320 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-17 19:38:18,330 INFO L208 MainTranslator]: Completed translation [2022-03-17 19:38:18,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:38:18 WrapperNode [2022-03-17 19:38:18,331 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-17 19:38:18,337 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-17 19:38:18,338 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-17 19:38:18,338 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-17 19:38:18,348 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:38:18" (1/1) ... [2022-03-17 19:38:18,349 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:38:18" (1/1) ... [2022-03-17 19:38:18,364 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:38:18" (1/1) ... [2022-03-17 19:38:18,365 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:38:18" (1/1) ... [2022-03-17 19:38:18,370 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:38:18" (1/1) ... [2022-03-17 19:38:18,382 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:38:18" (1/1) ... [2022-03-17 19:38:18,384 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:38:18" (1/1) ... [2022-03-17 19:38:18,386 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-17 19:38:18,386 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-17 19:38:18,387 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-17 19:38:18,387 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-17 19:38:18,387 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:38:18" (1/1) ... [2022-03-17 19:38:18,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-17 19:38:18,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 19:38:18,428 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) [2022-03-17 19:38:18,452 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 [2022-03-17 19:38:18,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-17 19:38:18,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-17 19:38:18,469 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-17 19:38:18,469 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-03-17 19:38:18,469 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-17 19:38:18,469 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-17 19:38:18,469 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-17 19:38:18,469 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-17 19:38:18,470 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-17 19:38:18,470 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-03-17 19:38:18,470 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-17 19:38:18,470 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-17 19:38:18,470 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-17 19:38:18,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-17 19:38:18,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-17 19:38:18,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-17 19:38:18,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-17 19:38:18,471 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-17 19:38:18,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-17 19:38:18,561 INFO L234 CfgBuilder]: Building ICFG [2022-03-17 19:38:18,562 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-17 19:38:18,732 INFO L275 CfgBuilder]: Performing block encoding [2022-03-17 19:38:18,737 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-17 19:38:18,737 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-03-17 19:38:18,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.03 07:38:18 BoogieIcfgContainer [2022-03-17 19:38:18,739 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-17 19:38:18,739 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-17 19:38:18,739 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-17 19:38:18,740 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-17 19:38:18,743 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.03 07:38:18" (1/1) ... [2022-03-17 19:38:18,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 17.03 07:38:18 BasicIcfg [2022-03-17 19:38:18,766 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-17 19:38:18,767 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-17 19:38:18,768 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-17 19:38:18,770 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-17 19:38:18,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 07:38:18" (1/4) ... [2022-03-17 19:38:18,771 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b5ea3b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:38:18, skipping insertion in model container [2022-03-17 19:38:18,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:38:18" (2/4) ... [2022-03-17 19:38:18,771 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b5ea3b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:38:18, skipping insertion in model container [2022-03-17 19:38:18,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.03 07:38:18" (3/4) ... [2022-03-17 19:38:18,771 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b5ea3b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.03 07:38:18, skipping insertion in model container [2022-03-17 19:38:18,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 17.03 07:38:18" (4/4) ... [2022-03-17 19:38:18,772 INFO L111 eAbstractionObserver]: Analyzing ICFG apache-get-tag.i.v+nlh-reducer.cqvasr [2022-03-17 19:38:18,776 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-17 19:38:18,776 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2022-03-17 19:38:18,810 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-17 19:38:18,815 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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 [2022-03-17 19:38:18,815 INFO L341 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-03-17 19:38:18,829 INFO L276 IsEmpty]: Start isEmpty. Operand has 76 states, 54 states have (on average 1.8333333333333333) internal successors, (99), 71 states have internal predecessors, (99), 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) [2022-03-17 19:38:18,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-03-17 19:38:18,837 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 19:38:18,838 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 19:38:18,838 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-03-17 19:38:18,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 19:38:18,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1220864783, now seen corresponding path program 1 times [2022-03-17 19:38:18,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 19:38:18,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863159139] [2022-03-17 19:38:18,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 19:38:18,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 19:38:18,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 19:38:19,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 19:38:19,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 19:38:19,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 19:38:19,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 19:38:19,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863159139] [2022-03-17 19:38:19,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863159139] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 19:38:19,111 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 19:38:19,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-17 19:38:19,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115439361] [2022-03-17 19:38:19,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 19:38:19,118 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-17 19:38:19,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 19:38:19,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-17 19:38:19,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-17 19:38:19,151 INFO L87 Difference]: Start difference. First operand has 76 states, 54 states have (on average 1.8333333333333333) internal successors, (99), 71 states have internal predecessors, (99), 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) [2022-03-17 19:38:19,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 19:38:19,368 INFO L93 Difference]: Finished difference Result 87 states and 113 transitions. [2022-03-17 19:38:19,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-17 19:38:19,371 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 [2022-03-17 19:38:19,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 19:38:19,377 INFO L225 Difference]: With dead ends: 87 [2022-03-17 19:38:19,377 INFO L226 Difference]: Without dead ends: 69 [2022-03-17 19:38:19,379 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-03-17 19:38:19,385 INFO L912 BasicCegarLoop]: 59 mSDtfsCounter, 126 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 19:38:19,389 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 89 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 19:38:19,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-03-17 19:38:19,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2022-03-17 19:38:19,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 50 states have (on average 1.4) 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) [2022-03-17 19:38:19,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2022-03-17 19:38:19,430 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 12 [2022-03-17 19:38:19,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 19:38:19,431 INFO L478 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2022-03-17 19:38:19,431 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) [2022-03-17 19:38:19,431 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2022-03-17 19:38:19,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-03-17 19:38:19,432 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 19:38:19,432 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 19:38:19,432 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-17 19:38:19,432 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr12ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-03-17 19:38:19,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 19:38:19,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1220896562, now seen corresponding path program 1 times [2022-03-17 19:38:19,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 19:38:19,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786278448] [2022-03-17 19:38:19,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 19:38:19,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 19:38:19,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 19:38:19,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 19:38:19,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 19:38:19,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 19:38:19,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 19:38:19,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786278448] [2022-03-17 19:38:19,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786278448] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 19:38:19,510 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 19:38:19,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-17 19:38:19,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995749771] [2022-03-17 19:38:19,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 19:38:19,511 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-17 19:38:19,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 19:38:19,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-17 19:38:19,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-17 19:38:19,512 INFO L87 Difference]: Start difference. First operand 69 states and 73 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) [2022-03-17 19:38:19,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 19:38:19,713 INFO L93 Difference]: Finished difference Result 111 states and 117 transitions. [2022-03-17 19:38:19,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-17 19:38:19,714 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 [2022-03-17 19:38:19,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 19:38:19,717 INFO L225 Difference]: With dead ends: 111 [2022-03-17 19:38:19,717 INFO L226 Difference]: Without dead ends: 109 [2022-03-17 19:38:19,719 INFO L911 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 [2022-03-17 19:38:19,721 INFO L912 BasicCegarLoop]: 106 mSDtfsCounter, 70 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 19:38:19,725 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 218 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 19:38:19,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-03-17 19:38:19,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 67. [2022-03-17 19:38:19,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 49 states have (on average 1.3877551020408163) 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) [2022-03-17 19:38:19,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2022-03-17 19:38:19,734 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 12 [2022-03-17 19:38:19,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 19:38:19,734 INFO L478 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2022-03-17 19:38:19,735 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) [2022-03-17 19:38:19,735 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2022-03-17 19:38:19,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-03-17 19:38:19,735 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 19:38:19,735 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 19:38:19,735 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-17 19:38:19,736 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-03-17 19:38:19,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 19:38:19,736 INFO L85 PathProgramCache]: Analyzing trace with hash -807896157, now seen corresponding path program 1 times [2022-03-17 19:38:19,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 19:38:19,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645107138] [2022-03-17 19:38:19,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 19:38:19,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 19:38:19,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 19:38:19,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 19:38:19,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 19:38:19,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 19:38:19,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 19:38:19,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645107138] [2022-03-17 19:38:19,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645107138] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 19:38:19,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 19:38:19,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-17 19:38:19,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66105976] [2022-03-17 19:38:19,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 19:38:19,836 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-17 19:38:19,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 19:38:19,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-17 19:38:19,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-17 19:38:19,837 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 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) [2022-03-17 19:38:19,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 19:38:19,970 INFO L93 Difference]: Finished difference Result 73 states and 77 transitions. [2022-03-17 19:38:19,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-17 19:38:19,971 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 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 13 [2022-03-17 19:38:19,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 19:38:19,971 INFO L225 Difference]: With dead ends: 73 [2022-03-17 19:38:19,972 INFO L226 Difference]: Without dead ends: 71 [2022-03-17 19:38:19,972 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-03-17 19:38:19,973 INFO L912 BasicCegarLoop]: 64 mSDtfsCounter, 47 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 19:38:19,973 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 128 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 19:38:19,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-03-17 19:38:19,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 70. [2022-03-17 19:38:19,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 52 states have (on average 1.3653846153846154) internal successors, (71), 66 states have internal predecessors, (71), 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) [2022-03-17 19:38:19,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 74 transitions. [2022-03-17 19:38:19,981 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 74 transitions. Word has length 13 [2022-03-17 19:38:19,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 19:38:19,981 INFO L478 AbstractCegarLoop]: Abstraction has 70 states and 74 transitions. [2022-03-17 19:38:19,981 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 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) [2022-03-17 19:38:19,981 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 74 transitions. [2022-03-17 19:38:19,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-17 19:38:19,982 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 19:38:19,982 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 19:38:19,982 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-17 19:38:19,983 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-03-17 19:38:19,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 19:38:19,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1000912364, now seen corresponding path program 1 times [2022-03-17 19:38:19,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 19:38:19,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419211400] [2022-03-17 19:38:19,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 19:38:19,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 19:38:19,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 19:38:20,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 19:38:20,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 19:38:20,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 19:38:20,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 19:38:20,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419211400] [2022-03-17 19:38:20,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419211400] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 19:38:20,064 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 19:38:20,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-17 19:38:20,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203810824] [2022-03-17 19:38:20,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 19:38:20,065 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-17 19:38:20,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 19:38:20,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-17 19:38:20,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-03-17 19:38:20,066 INFO L87 Difference]: Start difference. First operand 70 states and 74 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) [2022-03-17 19:38:20,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 19:38:20,194 INFO L93 Difference]: Finished difference Result 71 states and 75 transitions. [2022-03-17 19:38:20,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-17 19:38:20,195 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 [2022-03-17 19:38:20,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 19:38:20,196 INFO L225 Difference]: With dead ends: 71 [2022-03-17 19:38:20,196 INFO L226 Difference]: Without dead ends: 69 [2022-03-17 19:38:20,197 INFO L911 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 [2022-03-17 19:38:20,201 INFO L912 BasicCegarLoop]: 43 mSDtfsCounter, 64 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 126 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 [2022-03-17 19:38:20,202 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 126 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 19:38:20,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-03-17 19:38:20,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 68. [2022-03-17 19:38:20,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 51 states have (on average 1.3529411764705883) internal successors, (69), 64 states have internal predecessors, (69), 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) [2022-03-17 19:38:20,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 72 transitions. [2022-03-17 19:38:20,217 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 72 transitions. Word has length 15 [2022-03-17 19:38:20,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 19:38:20,218 INFO L478 AbstractCegarLoop]: Abstraction has 68 states and 72 transitions. [2022-03-17 19:38:20,218 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) [2022-03-17 19:38:20,218 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 72 transitions. [2022-03-17 19:38:20,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-17 19:38:20,218 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 19:38:20,218 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 19:38:20,219 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-17 19:38:20,219 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr13ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-03-17 19:38:20,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 19:38:20,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1947612816, now seen corresponding path program 1 times [2022-03-17 19:38:20,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 19:38:20,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428690701] [2022-03-17 19:38:20,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 19:38:20,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 19:38:20,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 19:38:20,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 19:38:20,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 19:38:20,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 19:38:20,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 19:38:20,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428690701] [2022-03-17 19:38:20,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428690701] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 19:38:20,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 19:38:20,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-17 19:38:20,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057858690] [2022-03-17 19:38:20,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 19:38:20,295 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-17 19:38:20,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 19:38:20,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-17 19:38:20,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-03-17 19:38:20,296 INFO L87 Difference]: Start difference. First operand 68 states and 72 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) [2022-03-17 19:38:20,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 19:38:20,442 INFO L93 Difference]: Finished difference Result 69 states and 73 transitions. [2022-03-17 19:38:20,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-17 19:38:20,444 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 [2022-03-17 19:38:20,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 19:38:20,448 INFO L225 Difference]: With dead ends: 69 [2022-03-17 19:38:20,448 INFO L226 Difference]: Without dead ends: 67 [2022-03-17 19:38:20,448 INFO L911 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 [2022-03-17 19:38:20,450 INFO L912 BasicCegarLoop]: 41 mSDtfsCounter, 62 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 120 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 [2022-03-17 19:38:20,450 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 120 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 19:38:20,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-03-17 19:38:20,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 66. [2022-03-17 19:38:20,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 50 states have (on average 1.34) internal successors, (67), 62 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) [2022-03-17 19:38:20,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2022-03-17 19:38:20,463 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 15 [2022-03-17 19:38:20,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 19:38:20,463 INFO L478 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2022-03-17 19:38:20,464 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) [2022-03-17 19:38:20,464 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2022-03-17 19:38:20,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-03-17 19:38:20,464 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 19:38:20,464 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 19:38:20,464 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-17 19:38:20,465 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-03-17 19:38:20,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 19:38:20,465 INFO L85 PathProgramCache]: Analyzing trace with hash 963513474, now seen corresponding path program 1 times [2022-03-17 19:38:20,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 19:38:20,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403389321] [2022-03-17 19:38:20,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 19:38:20,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 19:38:20,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 19:38:20,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 19:38:20,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 19:38:20,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 19:38:20,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 19:38:20,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403389321] [2022-03-17 19:38:20,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403389321] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 19:38:20,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 19:38:20,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-17 19:38:20,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265435136] [2022-03-17 19:38:20,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 19:38:20,509 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-17 19:38:20,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 19:38:20,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-17 19:38:20,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-17 19:38:20,510 INFO L87 Difference]: Start difference. First operand 66 states and 70 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) [2022-03-17 19:38:20,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 19:38:20,600 INFO L93 Difference]: Finished difference Result 67 states and 71 transitions. [2022-03-17 19:38:20,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-17 19:38:20,601 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 [2022-03-17 19:38:20,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 19:38:20,602 INFO L225 Difference]: With dead ends: 67 [2022-03-17 19:38:20,602 INFO L226 Difference]: Without dead ends: 63 [2022-03-17 19:38:20,602 INFO L911 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 [2022-03-17 19:38:20,603 INFO L912 BasicCegarLoop]: 55 mSDtfsCounter, 21 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 19:38:20,603 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 137 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 19:38:20,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-03-17 19:38:20,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2022-03-17 19:38:20,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 47 states have (on average 1.3404255319148937) internal successors, (63), 58 states have internal predecessors, (63), 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) [2022-03-17 19:38:20,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2022-03-17 19:38:20,607 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 16 [2022-03-17 19:38:20,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 19:38:20,608 INFO L478 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2022-03-17 19:38:20,608 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) [2022-03-17 19:38:20,608 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2022-03-17 19:38:20,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-03-17 19:38:20,608 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 19:38:20,609 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 19:38:20,609 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-17 19:38:20,609 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr14ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-03-17 19:38:20,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 19:38:20,609 INFO L85 PathProgramCache]: Analyzing trace with hash 246456422, now seen corresponding path program 1 times [2022-03-17 19:38:20,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 19:38:20,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715250286] [2022-03-17 19:38:20,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 19:38:20,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 19:38:20,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 19:38:20,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 19:38:20,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 19:38:20,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 19:38:20,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 19:38:20,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715250286] [2022-03-17 19:38:20,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715250286] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 19:38:20,660 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 19:38:20,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-17 19:38:20,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639239089] [2022-03-17 19:38:20,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 19:38:20,661 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-17 19:38:20,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 19:38:20,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-17 19:38:20,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-17 19:38:20,662 INFO L87 Difference]: Start difference. First operand 62 states and 66 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) [2022-03-17 19:38:20,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 19:38:20,745 INFO L93 Difference]: Finished difference Result 63 states and 67 transitions. [2022-03-17 19:38:20,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-17 19:38:20,746 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 [2022-03-17 19:38:20,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 19:38:20,747 INFO L225 Difference]: With dead ends: 63 [2022-03-17 19:38:20,748 INFO L226 Difference]: Without dead ends: 59 [2022-03-17 19:38:20,750 INFO L911 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 [2022-03-17 19:38:20,751 INFO L912 BasicCegarLoop]: 52 mSDtfsCounter, 18 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 19:38:20,757 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 131 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 19:38:20,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-03-17 19:38:20,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2022-03-17 19:38:20,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 44 states have (on average 1.3409090909090908) internal successors, (59), 54 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) [2022-03-17 19:38:20,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 62 transitions. [2022-03-17 19:38:20,766 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 62 transitions. Word has length 16 [2022-03-17 19:38:20,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 19:38:20,766 INFO L478 AbstractCegarLoop]: Abstraction has 58 states and 62 transitions. [2022-03-17 19:38:20,767 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) [2022-03-17 19:38:20,767 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 62 transitions. [2022-03-17 19:38:20,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-03-17 19:38:20,769 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 19:38:20,769 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 19:38:20,769 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-03-17 19:38:20,769 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr15ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-03-17 19:38:20,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 19:38:20,770 INFO L85 PathProgramCache]: Analyzing trace with hash 246488199, now seen corresponding path program 1 times [2022-03-17 19:38:20,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 19:38:20,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49034925] [2022-03-17 19:38:20,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 19:38:20,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 19:38:20,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 19:38:20,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 19:38:20,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 19:38:20,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 19:38:20,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 19:38:20,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49034925] [2022-03-17 19:38:20,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49034925] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 19:38:20,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 19:38:20,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-17 19:38:20,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051596104] [2022-03-17 19:38:20,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 19:38:20,848 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-17 19:38:20,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 19:38:20,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-17 19:38:20,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-03-17 19:38:20,848 INFO L87 Difference]: Start difference. First operand 58 states and 62 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) [2022-03-17 19:38:20,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 19:38:20,989 INFO L93 Difference]: Finished difference Result 96 states and 103 transitions. [2022-03-17 19:38:20,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-17 19:38:20,990 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 [2022-03-17 19:38:20,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 19:38:20,990 INFO L225 Difference]: With dead ends: 96 [2022-03-17 19:38:20,990 INFO L226 Difference]: Without dead ends: 94 [2022-03-17 19:38:20,991 INFO L911 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 [2022-03-17 19:38:20,991 INFO L912 BasicCegarLoop]: 58 mSDtfsCounter, 88 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 19:38:20,992 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 147 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 19:38:20,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-03-17 19:38:20,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 56. [2022-03-17 19:38:21,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 43 states have (on average 1.3255813953488371) internal successors, (57), 52 states have internal predecessors, (57), 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) [2022-03-17 19:38:21,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2022-03-17 19:38:21,000 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 16 [2022-03-17 19:38:21,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 19:38:21,001 INFO L478 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2022-03-17 19:38:21,001 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) [2022-03-17 19:38:21,001 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2022-03-17 19:38:21,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-17 19:38:21,002 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 19:38:21,002 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 19:38:21,002 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-03-17 19:38:21,002 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-03-17 19:38:21,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 19:38:21,002 INFO L85 PathProgramCache]: Analyzing trace with hash -194897798, now seen corresponding path program 1 times [2022-03-17 19:38:21,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 19:38:21,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061465383] [2022-03-17 19:38:21,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 19:38:21,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 19:38:21,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 19:38:21,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 19:38:21,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 19:38:21,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 19:38:21,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 19:38:21,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061465383] [2022-03-17 19:38:21,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061465383] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 19:38:21,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 19:38:21,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-17 19:38:21,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46549754] [2022-03-17 19:38:21,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 19:38:21,048 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-17 19:38:21,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 19:38:21,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-17 19:38:21,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-03-17 19:38:21,049 INFO L87 Difference]: Start difference. First operand 56 states and 60 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) [2022-03-17 19:38:21,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 19:38:21,158 INFO L93 Difference]: Finished difference Result 74 states and 80 transitions. [2022-03-17 19:38:21,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-17 19:38:21,159 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 [2022-03-17 19:38:21,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 19:38:21,159 INFO L225 Difference]: With dead ends: 74 [2022-03-17 19:38:21,159 INFO L226 Difference]: Without dead ends: 72 [2022-03-17 19:38:21,160 INFO L911 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 [2022-03-17 19:38:21,160 INFO L912 BasicCegarLoop]: 45 mSDtfsCounter, 72 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 19:38:21,160 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 116 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 19:38:21,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-03-17 19:38:21,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 54. [2022-03-17 19:38:21,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 42 states have (on average 1.3095238095238095) internal successors, (55), 50 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) [2022-03-17 19:38:21,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2022-03-17 19:38:21,165 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 17 [2022-03-17 19:38:21,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 19:38:21,165 INFO L478 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2022-03-17 19:38:21,165 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) [2022-03-17 19:38:21,165 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2022-03-17 19:38:21,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-17 19:38:21,166 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 19:38:21,166 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 19:38:21,166 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-03-17 19:38:21,166 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr10ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-03-17 19:38:21,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 19:38:21,167 INFO L85 PathProgramCache]: Analyzing trace with hash -194865986, now seen corresponding path program 1 times [2022-03-17 19:38:21,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 19:38:21,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989235568] [2022-03-17 19:38:21,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 19:38:21,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 19:38:21,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 19:38:21,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 19:38:21,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 19:38:21,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 19:38:21,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 19:38:21,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989235568] [2022-03-17 19:38:21,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989235568] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 19:38:21,211 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 19:38:21,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-17 19:38:21,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050036426] [2022-03-17 19:38:21,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 19:38:21,212 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-17 19:38:21,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 19:38:21,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-17 19:38:21,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-03-17 19:38:21,213 INFO L87 Difference]: Start difference. First operand 54 states and 58 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) [2022-03-17 19:38:21,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 19:38:21,309 INFO L93 Difference]: Finished difference Result 55 states and 59 transitions. [2022-03-17 19:38:21,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-17 19:38:21,309 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 [2022-03-17 19:38:21,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 19:38:21,310 INFO L225 Difference]: With dead ends: 55 [2022-03-17 19:38:21,310 INFO L226 Difference]: Without dead ends: 53 [2022-03-17 19:38:21,310 INFO L911 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 [2022-03-17 19:38:21,311 INFO L912 BasicCegarLoop]: 31 mSDtfsCounter, 46 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 19:38:21,311 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 90 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 19:38:21,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-03-17 19:38:21,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2022-03-17 19:38:21,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 41 states have (on average 1.2926829268292683) internal successors, (53), 48 states have internal predecessors, (53), 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) [2022-03-17 19:38:21,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2022-03-17 19:38:21,315 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 17 [2022-03-17 19:38:21,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 19:38:21,315 INFO L478 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2022-03-17 19:38:21,315 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) [2022-03-17 19:38:21,315 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2022-03-17 19:38:21,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-17 19:38:21,316 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 19:38:21,316 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 19:38:21,316 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-03-17 19:38:21,316 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr16ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-03-17 19:38:21,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 19:38:21,317 INFO L85 PathProgramCache]: Analyzing trace with hash -948799137, now seen corresponding path program 1 times [2022-03-17 19:38:21,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 19:38:21,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488840394] [2022-03-17 19:38:21,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 19:38:21,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 19:38:21,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 19:38:21,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 19:38:21,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 19:38:21,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 19:38:21,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 19:38:21,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488840394] [2022-03-17 19:38:21,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488840394] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 19:38:21,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 19:38:21,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-17 19:38:21,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122202322] [2022-03-17 19:38:21,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 19:38:21,394 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-17 19:38:21,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 19:38:21,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-17 19:38:21,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-17 19:38:21,395 INFO L87 Difference]: Start difference. First operand 52 states and 56 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) [2022-03-17 19:38:21,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 19:38:21,579 INFO L93 Difference]: Finished difference Result 110 states and 119 transitions. [2022-03-17 19:38:21,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-17 19:38:21,579 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 [2022-03-17 19:38:21,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 19:38:21,580 INFO L225 Difference]: With dead ends: 110 [2022-03-17 19:38:21,580 INFO L226 Difference]: Without dead ends: 108 [2022-03-17 19:38:21,580 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-03-17 19:38:21,581 INFO L912 BasicCegarLoop]: 70 mSDtfsCounter, 79 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 19:38:21,581 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 233 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 19:38:21,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-03-17 19:38:21,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 57. [2022-03-17 19:38:21,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 46 states have (on average 1.2826086956521738) internal successors, (59), 53 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) [2022-03-17 19:38:21,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 62 transitions. [2022-03-17 19:38:21,586 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 62 transitions. Word has length 17 [2022-03-17 19:38:21,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 19:38:21,586 INFO L478 AbstractCegarLoop]: Abstraction has 57 states and 62 transitions. [2022-03-17 19:38:21,586 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) [2022-03-17 19:38:21,586 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 62 transitions. [2022-03-17 19:38:21,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-17 19:38:21,587 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 19:38:21,587 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 19:38:21,587 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-03-17 19:38:21,587 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr5ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-03-17 19:38:21,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 19:38:21,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1746863154, now seen corresponding path program 1 times [2022-03-17 19:38:21,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 19:38:21,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054564959] [2022-03-17 19:38:21,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 19:38:21,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 19:38:21,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 19:38:21,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 19:38:21,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 19:38:21,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 19:38:21,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 19:38:21,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054564959] [2022-03-17 19:38:21,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054564959] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 19:38:21,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 19:38:21,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-17 19:38:21,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370632844] [2022-03-17 19:38:21,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 19:38:21,664 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-17 19:38:21,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 19:38:21,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-17 19:38:21,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-17 19:38:21,664 INFO L87 Difference]: Start difference. First operand 57 states and 62 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) [2022-03-17 19:38:21,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 19:38:21,809 INFO L93 Difference]: Finished difference Result 98 states and 107 transitions. [2022-03-17 19:38:21,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-17 19:38:21,809 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 [2022-03-17 19:38:21,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 19:38:21,811 INFO L225 Difference]: With dead ends: 98 [2022-03-17 19:38:21,811 INFO L226 Difference]: Without dead ends: 96 [2022-03-17 19:38:21,811 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-03-17 19:38:21,812 INFO L912 BasicCegarLoop]: 52 mSDtfsCounter, 68 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 19:38:21,813 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 146 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 19:38:21,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-03-17 19:38:21,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 62. [2022-03-17 19:38:21,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 51 states have (on average 1.2941176470588236) 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) [2022-03-17 19:38:21,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 69 transitions. [2022-03-17 19:38:21,819 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 69 transitions. Word has length 18 [2022-03-17 19:38:21,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 19:38:21,819 INFO L478 AbstractCegarLoop]: Abstraction has 62 states and 69 transitions. [2022-03-17 19:38:21,819 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) [2022-03-17 19:38:21,819 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 69 transitions. [2022-03-17 19:38:21,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-17 19:38:21,822 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 19:38:21,822 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 19:38:21,822 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-03-17 19:38:21,822 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr8ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-03-17 19:38:21,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 19:38:21,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1746832336, now seen corresponding path program 1 times [2022-03-17 19:38:21,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 19:38:21,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54902030] [2022-03-17 19:38:21,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 19:38:21,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 19:38:21,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 19:38:21,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 19:38:21,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 19:38:21,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 19:38:21,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 19:38:21,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54902030] [2022-03-17 19:38:21,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54902030] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 19:38:21,878 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 19:38:21,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-17 19:38:21,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298493983] [2022-03-17 19:38:21,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 19:38:21,878 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-17 19:38:21,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 19:38:21,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-17 19:38:21,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-03-17 19:38:21,879 INFO L87 Difference]: Start difference. First operand 62 states and 69 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) [2022-03-17 19:38:21,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 19:38:21,999 INFO L93 Difference]: Finished difference Result 82 states and 91 transitions. [2022-03-17 19:38:22,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-17 19:38:22,000 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 [2022-03-17 19:38:22,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 19:38:22,001 INFO L225 Difference]: With dead ends: 82 [2022-03-17 19:38:22,001 INFO L226 Difference]: Without dead ends: 80 [2022-03-17 19:38:22,001 INFO L911 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 [2022-03-17 19:38:22,002 INFO L912 BasicCegarLoop]: 41 mSDtfsCounter, 63 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 19:38:22,002 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 108 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 19:38:22,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-03-17 19:38:22,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 60. [2022-03-17 19:38:22,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 50 states have (on average 1.28) 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) [2022-03-17 19:38:22,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 67 transitions. [2022-03-17 19:38:22,006 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 67 transitions. Word has length 18 [2022-03-17 19:38:22,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 19:38:22,007 INFO L478 AbstractCegarLoop]: Abstraction has 60 states and 67 transitions. [2022-03-17 19:38:22,007 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) [2022-03-17 19:38:22,007 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 67 transitions. [2022-03-17 19:38:22,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-17 19:38:22,007 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 19:38:22,007 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 19:38:22,007 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-03-17 19:38:22,008 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr11ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-03-17 19:38:22,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 19:38:22,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1745876974, now seen corresponding path program 1 times [2022-03-17 19:38:22,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 19:38:22,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525460655] [2022-03-17 19:38:22,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 19:38:22,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 19:38:22,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 19:38:22,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 19:38:22,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 19:38:22,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 19:38:22,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 19:38:22,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525460655] [2022-03-17 19:38:22,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525460655] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 19:38:22,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 19:38:22,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-17 19:38:22,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945387174] [2022-03-17 19:38:22,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 19:38:22,085 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-17 19:38:22,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 19:38:22,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-17 19:38:22,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-17 19:38:22,086 INFO L87 Difference]: Start difference. First operand 60 states and 67 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) [2022-03-17 19:38:22,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 19:38:22,229 INFO L93 Difference]: Finished difference Result 76 states and 83 transitions. [2022-03-17 19:38:22,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-17 19:38:22,230 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 [2022-03-17 19:38:22,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 19:38:22,230 INFO L225 Difference]: With dead ends: 76 [2022-03-17 19:38:22,231 INFO L226 Difference]: Without dead ends: 72 [2022-03-17 19:38:22,231 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-03-17 19:38:22,231 INFO L912 BasicCegarLoop]: 32 mSDtfsCounter, 40 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 19:38:22,232 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 111 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 19:38:22,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-03-17 19:38:22,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 61. [2022-03-17 19:38:22,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 51 states have (on average 1.2745098039215685) internal successors, (65), 57 states have internal predecessors, (65), 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) [2022-03-17 19:38:22,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 68 transitions. [2022-03-17 19:38:22,236 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 68 transitions. Word has length 18 [2022-03-17 19:38:22,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 19:38:22,236 INFO L478 AbstractCegarLoop]: Abstraction has 61 states and 68 transitions. [2022-03-17 19:38:22,236 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) [2022-03-17 19:38:22,237 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 68 transitions. [2022-03-17 19:38:22,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-17 19:38:22,237 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 19:38:22,237 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 19:38:22,237 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-03-17 19:38:22,237 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-03-17 19:38:22,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 19:38:22,238 INFO L85 PathProgramCache]: Analyzing trace with hash 649803267, now seen corresponding path program 1 times [2022-03-17 19:38:22,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 19:38:22,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741125405] [2022-03-17 19:38:22,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 19:38:22,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 19:38:22,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 19:38:22,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 19:38:22,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 19:38:22,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 19:38:22,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 19:38:22,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741125405] [2022-03-17 19:38:22,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741125405] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 19:38:22,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 19:38:22,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-17 19:38:22,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439296873] [2022-03-17 19:38:22,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 19:38:22,305 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-17 19:38:22,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 19:38:22,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-17 19:38:22,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-17 19:38:22,306 INFO L87 Difference]: Start difference. First operand 61 states and 68 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) [2022-03-17 19:38:22,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 19:38:22,433 INFO L93 Difference]: Finished difference Result 72 states and 79 transitions. [2022-03-17 19:38:22,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-17 19:38:22,434 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 [2022-03-17 19:38:22,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 19:38:22,434 INFO L225 Difference]: With dead ends: 72 [2022-03-17 19:38:22,434 INFO L226 Difference]: Without dead ends: 70 [2022-03-17 19:38:22,435 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-03-17 19:38:22,435 INFO L912 BasicCegarLoop]: 34 mSDtfsCounter, 72 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 19:38:22,435 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 96 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 19:38:22,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-03-17 19:38:22,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 64. [2022-03-17 19:38:22,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 54 states have (on average 1.2592592592592593) 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) [2022-03-17 19:38:22,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 71 transitions. [2022-03-17 19:38:22,440 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 71 transitions. Word has length 18 [2022-03-17 19:38:22,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 19:38:22,440 INFO L478 AbstractCegarLoop]: Abstraction has 64 states and 71 transitions. [2022-03-17 19:38:22,440 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) [2022-03-17 19:38:22,440 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 71 transitions. [2022-03-17 19:38:22,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-17 19:38:22,441 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 19:38:22,441 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 19:38:22,441 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-03-17 19:38:22,441 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr9ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-03-17 19:38:22,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 19:38:22,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1682773732, now seen corresponding path program 1 times [2022-03-17 19:38:22,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 19:38:22,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914814424] [2022-03-17 19:38:22,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 19:38:22,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 19:38:22,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 19:38:22,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 19:38:22,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 19:38:22,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 19:38:22,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 19:38:22,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914814424] [2022-03-17 19:38:22,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914814424] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 19:38:22,519 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 19:38:22,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-17 19:38:22,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395702496] [2022-03-17 19:38:22,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 19:38:22,520 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-17 19:38:22,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 19:38:22,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-17 19:38:22,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-17 19:38:22,521 INFO L87 Difference]: Start difference. First operand 64 states and 71 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) [2022-03-17 19:38:22,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 19:38:22,672 INFO L93 Difference]: Finished difference Result 91 states and 100 transitions. [2022-03-17 19:38:22,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-17 19:38:22,673 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 [2022-03-17 19:38:22,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 19:38:22,673 INFO L225 Difference]: With dead ends: 91 [2022-03-17 19:38:22,673 INFO L226 Difference]: Without dead ends: 89 [2022-03-17 19:38:22,674 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-03-17 19:38:22,674 INFO L912 BasicCegarLoop]: 57 mSDtfsCounter, 52 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 19:38:22,675 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 168 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 19:38:22,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-03-17 19:38:22,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 67. [2022-03-17 19:38:22,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 57 states have (on average 1.2456140350877194) internal successors, (71), 63 states have internal predecessors, (71), 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) [2022-03-17 19:38:22,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 74 transitions. [2022-03-17 19:38:22,679 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 74 transitions. Word has length 19 [2022-03-17 19:38:22,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 19:38:22,680 INFO L478 AbstractCegarLoop]: Abstraction has 67 states and 74 transitions. [2022-03-17 19:38:22,680 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) [2022-03-17 19:38:22,680 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 74 transitions. [2022-03-17 19:38:22,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-17 19:38:22,680 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 19:38:22,680 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 19:38:22,681 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-03-17 19:38:22,681 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-03-17 19:38:22,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 19:38:22,681 INFO L85 PathProgramCache]: Analyzing trace with hash 596762259, now seen corresponding path program 1 times [2022-03-17 19:38:22,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 19:38:22,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373232520] [2022-03-17 19:38:22,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 19:38:22,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 19:38:22,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 19:38:22,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 19:38:22,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 19:38:22,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 19:38:22,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 19:38:22,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373232520] [2022-03-17 19:38:22,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373232520] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 19:38:22,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 19:38:22,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-17 19:38:22,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867525585] [2022-03-17 19:38:22,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 19:38:22,718 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-17 19:38:22,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 19:38:22,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-17 19:38:22,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-17 19:38:22,719 INFO L87 Difference]: Start difference. First operand 67 states and 74 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) [2022-03-17 19:38:22,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 19:38:22,779 INFO L93 Difference]: Finished difference Result 67 states and 74 transitions. [2022-03-17 19:38:22,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-17 19:38:22,779 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 [2022-03-17 19:38:22,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 19:38:22,780 INFO L225 Difference]: With dead ends: 67 [2022-03-17 19:38:22,780 INFO L226 Difference]: Without dead ends: 65 [2022-03-17 19:38:22,780 INFO L911 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 [2022-03-17 19:38:22,781 INFO L912 BasicCegarLoop]: 37 mSDtfsCounter, 40 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-17 19:38:22,781 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 74 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-17 19:38:22,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-03-17 19:38:22,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2022-03-17 19:38:22,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 56 states have (on average 1.2321428571428572) internal successors, (69), 61 states have internal predecessors, (69), 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) [2022-03-17 19:38:22,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 72 transitions. [2022-03-17 19:38:22,785 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 72 transitions. Word has length 20 [2022-03-17 19:38:22,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 19:38:22,785 INFO L478 AbstractCegarLoop]: Abstraction has 65 states and 72 transitions. [2022-03-17 19:38:22,785 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) [2022-03-17 19:38:22,786 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 72 transitions. [2022-03-17 19:38:22,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-17 19:38:22,786 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 19:38:22,786 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 19:38:22,786 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-03-17 19:38:22,786 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr7ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-03-17 19:38:22,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 19:38:22,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1319762151, now seen corresponding path program 1 times [2022-03-17 19:38:22,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 19:38:22,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29153023] [2022-03-17 19:38:22,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 19:38:22,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 19:38:22,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 19:38:22,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 19:38:22,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 19:38:22,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 19:38:22,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 19:38:22,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29153023] [2022-03-17 19:38:22,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29153023] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 19:38:22,822 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 19:38:22,822 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-17 19:38:22,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52624487] [2022-03-17 19:38:22,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 19:38:22,823 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-17 19:38:22,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 19:38:22,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-17 19:38:22,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-17 19:38:22,823 INFO L87 Difference]: Start difference. First operand 65 states and 72 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) [2022-03-17 19:38:22,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 19:38:22,882 INFO L93 Difference]: Finished difference Result 65 states and 72 transitions. [2022-03-17 19:38:22,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-17 19:38:22,883 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 [2022-03-17 19:38:22,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 19:38:22,883 INFO L225 Difference]: With dead ends: 65 [2022-03-17 19:38:22,883 INFO L226 Difference]: Without dead ends: 61 [2022-03-17 19:38:22,883 INFO L911 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 [2022-03-17 19:38:22,884 INFO L912 BasicCegarLoop]: 39 mSDtfsCounter, 13 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 97 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 [2022-03-17 19:38:22,884 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 97 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-17 19:38:22,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-03-17 19:38:22,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2022-03-17 19:38:22,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 53 states have (on average 1.2264150943396226) internal successors, (65), 57 states have internal predecessors, (65), 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) [2022-03-17 19:38:22,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 68 transitions. [2022-03-17 19:38:22,888 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 68 transitions. Word has length 21 [2022-03-17 19:38:22,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 19:38:22,889 INFO L478 AbstractCegarLoop]: Abstraction has 61 states and 68 transitions. [2022-03-17 19:38:22,889 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) [2022-03-17 19:38:22,889 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 68 transitions. [2022-03-17 19:38:22,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-03-17 19:38:22,889 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 19:38:22,889 INFO L500 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] [2022-03-17 19:38:22,889 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-03-17 19:38:22,890 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr9ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-03-17 19:38:22,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 19:38:22,890 INFO L85 PathProgramCache]: Analyzing trace with hash -2037098268, now seen corresponding path program 1 times [2022-03-17 19:38:22,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 19:38:22,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713063283] [2022-03-17 19:38:22,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 19:38:22,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 19:38:22,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 19:38:22,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 19:38:22,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 19:38:22,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 19:38:22,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 19:38:22,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713063283] [2022-03-17 19:38:22,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713063283] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 19:38:22,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 19:38:22,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-17 19:38:22,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300734671] [2022-03-17 19:38:22,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 19:38:22,949 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-17 19:38:22,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 19:38:22,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-17 19:38:22,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-03-17 19:38:22,950 INFO L87 Difference]: Start difference. First operand 61 states and 68 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) [2022-03-17 19:38:23,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 19:38:23,076 INFO L93 Difference]: Finished difference Result 76 states and 85 transitions. [2022-03-17 19:38:23,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-17 19:38:23,077 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 [2022-03-17 19:38:23,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 19:38:23,077 INFO L225 Difference]: With dead ends: 76 [2022-03-17 19:38:23,077 INFO L226 Difference]: Without dead ends: 74 [2022-03-17 19:38:23,078 INFO L911 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 [2022-03-17 19:38:23,078 INFO L912 BasicCegarLoop]: 31 mSDtfsCounter, 78 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 19:38:23,078 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 67 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 19:38:23,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-03-17 19:38:23,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 56. [2022-03-17 19:38:23,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 49 states have (on average 1.2244897959183674) internal successors, (60), 52 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) [2022-03-17 19:38:23,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 63 transitions. [2022-03-17 19:38:23,083 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 63 transitions. Word has length 22 [2022-03-17 19:38:23,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 19:38:23,083 INFO L478 AbstractCegarLoop]: Abstraction has 56 states and 63 transitions. [2022-03-17 19:38:23,083 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) [2022-03-17 19:38:23,083 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 63 transitions. [2022-03-17 19:38:23,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-03-17 19:38:23,084 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 19:38:23,084 INFO L500 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 19:38:23,084 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-03-17 19:38:23,084 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr16ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-03-17 19:38:23,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 19:38:23,085 INFO L85 PathProgramCache]: Analyzing trace with hash 319828265, now seen corresponding path program 1 times [2022-03-17 19:38:23,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 19:38:23,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224409976] [2022-03-17 19:38:23,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 19:38:23,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 19:38:23,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 19:38:23,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 19:38:23,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 19:38:23,140 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 19:38:23,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 19:38:23,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224409976] [2022-03-17 19:38:23,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224409976] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-17 19:38:23,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41016675] [2022-03-17 19:38:23,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 19:38:23,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 19:38:23,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 19:38:23,143 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) [2022-03-17 19:38:23,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-17 19:38:23,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 19:38:23,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-17 19:38:23,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-17 19:38:23,530 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 19:38:23,530 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-17 19:38:23,612 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-17 19:38:23,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41016675] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-17 19:38:23,612 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-17 19:38:23,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 5] total 14 [2022-03-17 19:38:23,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523268328] [2022-03-17 19:38:23,613 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-17 19:38:23,613 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-17 19:38:23,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 19:38:23,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-17 19:38:23,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-03-17 19:38:23,614 INFO L87 Difference]: Start difference. First operand 56 states and 63 transitions. Second operand has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 19:38:23,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 19:38:23,887 INFO L93 Difference]: Finished difference Result 102 states and 115 transitions. [2022-03-17 19:38:23,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-17 19:38:23,888 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2022-03-17 19:38:23,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 19:38:23,888 INFO L225 Difference]: With dead ends: 102 [2022-03-17 19:38:23,889 INFO L226 Difference]: Without dead ends: 100 [2022-03-17 19:38:23,889 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 36 SyntacticMatches, 5 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2022-03-17 19:38:23,889 INFO L912 BasicCegarLoop]: 29 mSDtfsCounter, 177 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-17 19:38:23,890 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [177 Valid, 138 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-17 19:38:23,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-03-17 19:38:23,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 52. [2022-03-17 19:38:23,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 46 states have (on average 1.2173913043478262) internal successors, (56), 48 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) [2022-03-17 19:38:23,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 59 transitions. [2022-03-17 19:38:23,895 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 59 transitions. Word has length 22 [2022-03-17 19:38:23,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 19:38:23,895 INFO L478 AbstractCegarLoop]: Abstraction has 52 states and 59 transitions. [2022-03-17 19:38:23,896 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 19:38:23,896 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 59 transitions. [2022-03-17 19:38:23,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-03-17 19:38:23,896 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 19:38:23,896 INFO L500 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 19:38:23,923 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-17 19:38:24,115 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 [2022-03-17 19:38:24,116 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-03-17 19:38:24,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 19:38:24,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1322547065, now seen corresponding path program 1 times [2022-03-17 19:38:24,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 19:38:24,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805817506] [2022-03-17 19:38:24,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 19:38:24,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 19:38:24,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 19:38:24,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 19:38:24,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 19:38:24,189 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 19:38:24,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 19:38:24,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805817506] [2022-03-17 19:38:24,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805817506] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-17 19:38:24,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2056482057] [2022-03-17 19:38:24,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 19:38:24,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 19:38:24,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 19:38:24,191 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) [2022-03-17 19:38:24,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-17 19:38:24,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 19:38:24,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-17 19:38:24,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-17 19:38:24,442 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 19:38:24,443 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-17 19:38:24,509 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-17 19:38:24,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2056482057] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-17 19:38:24,509 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-17 19:38:24,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 5] total 14 [2022-03-17 19:38:24,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712728621] [2022-03-17 19:38:24,510 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-17 19:38:24,510 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-17 19:38:24,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 19:38:24,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-17 19:38:24,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-03-17 19:38:24,511 INFO L87 Difference]: Start difference. First operand 52 states and 59 transitions. Second operand has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 13 states have internal predecessors, (47), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 19:38:24,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 19:38:24,743 INFO L93 Difference]: Finished difference Result 82 states and 93 transitions. [2022-03-17 19:38:24,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-17 19:38:24,743 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 13 states have internal predecessors, (47), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2022-03-17 19:38:24,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 19:38:24,744 INFO L225 Difference]: With dead ends: 82 [2022-03-17 19:38:24,744 INFO L226 Difference]: Without dead ends: 80 [2022-03-17 19:38:24,745 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 37 SyntacticMatches, 5 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=160, Invalid=392, Unknown=0, NotChecked=0, Total=552 [2022-03-17 19:38:24,745 INFO L912 BasicCegarLoop]: 19 mSDtfsCounter, 231 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 19:38:24,746 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [231 Valid, 97 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 19:38:24,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-03-17 19:38:24,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 44. [2022-03-17 19:38:24,749 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) [2022-03-17 19:38:24,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 50 transitions. [2022-03-17 19:38:24,750 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 50 transitions. Word has length 23 [2022-03-17 19:38:24,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 19:38:24,750 INFO L478 AbstractCegarLoop]: Abstraction has 44 states and 50 transitions. [2022-03-17 19:38:24,750 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 13 states have internal predecessors, (47), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 19:38:24,750 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 50 transitions. [2022-03-17 19:38:24,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-03-17 19:38:24,751 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 19:38:24,751 INFO L500 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] [2022-03-17 19:38:24,774 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-17 19:38:24,967 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 [2022-03-17 19:38:24,967 INFO L403 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr5ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-03-17 19:38:24,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 19:38:24,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1198767470, now seen corresponding path program 1 times [2022-03-17 19:38:24,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 19:38:24,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732938950] [2022-03-17 19:38:24,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 19:38:24,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 19:38:24,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 19:38:25,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 19:38:25,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 19:38:25,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 19:38:25,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 19:38:25,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732938950] [2022-03-17 19:38:25,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732938950] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 19:38:25,044 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 19:38:25,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-17 19:38:25,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925375439] [2022-03-17 19:38:25,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 19:38:25,045 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-17 19:38:25,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 19:38:25,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-17 19:38:25,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-03-17 19:38:25,046 INFO L87 Difference]: Start difference. First operand 44 states and 50 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 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) [2022-03-17 19:38:25,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 19:38:25,183 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2022-03-17 19:38:25,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-17 19:38:25,183 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 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 [2022-03-17 19:38:25,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 19:38:25,184 INFO L225 Difference]: With dead ends: 56 [2022-03-17 19:38:25,184 INFO L226 Difference]: Without dead ends: 54 [2022-03-17 19:38:25,184 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-03-17 19:38:25,185 INFO L912 BasicCegarLoop]: 23 mSDtfsCounter, 63 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 19:38:25,185 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 53 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 19:38:25,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-03-17 19:38:25,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 39. [2022-03-17 19:38:25,189 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) [2022-03-17 19:38:25,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2022-03-17 19:38:25,189 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 23 [2022-03-17 19:38:25,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 19:38:25,190 INFO L478 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2022-03-17 19:38:25,190 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 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) [2022-03-17 19:38:25,190 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2022-03-17 19:38:25,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-03-17 19:38:25,190 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 19:38:25,190 INFO L500 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] [2022-03-17 19:38:25,190 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-03-17 19:38:25,190 INFO L403 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr11ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-03-17 19:38:25,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 19:38:25,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1199753650, now seen corresponding path program 1 times [2022-03-17 19:38:25,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 19:38:25,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130366557] [2022-03-17 19:38:25,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 19:38:25,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 19:38:25,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 19:38:25,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 19:38:25,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 19:38:25,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 19:38:25,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 19:38:25,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130366557] [2022-03-17 19:38:25,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130366557] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 19:38:25,246 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 19:38:25,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-17 19:38:25,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063031364] [2022-03-17 19:38:25,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 19:38:25,247 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-17 19:38:25,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 19:38:25,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-17 19:38:25,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-03-17 19:38:25,247 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 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) [2022-03-17 19:38:25,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 19:38:25,354 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2022-03-17 19:38:25,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-17 19:38:25,354 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 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 [2022-03-17 19:38:25,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 19:38:25,354 INFO L225 Difference]: With dead ends: 39 [2022-03-17 19:38:25,354 INFO L226 Difference]: Without dead ends: 0 [2022-03-17 19:38:25,355 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-03-17 19:38:25,355 INFO L912 BasicCegarLoop]: 15 mSDtfsCounter, 46 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-17 19:38:25,355 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 43 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-17 19:38:25,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-17 19:38:25,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-17 19:38:25,356 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) [2022-03-17 19:38:25,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-17 19:38:25,356 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2022-03-17 19:38:25,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 19:38:25,356 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-17 19:38:25,356 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 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) [2022-03-17 19:38:25,357 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-17 19:38:25,357 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-17 19:38:25,359 INFO L788 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (16 of 17 remaining) [2022-03-17 19:38:25,359 INFO L788 garLoopResultBuilder]: Registering result SAFE for location mainErr12ASSERT_VIOLATIONERROR_FUNCTION (15 of 17 remaining) [2022-03-17 19:38:25,359 INFO L788 garLoopResultBuilder]: Registering result SAFE for location mainErr1ASSERT_VIOLATIONERROR_FUNCTION (14 of 17 remaining) [2022-03-17 19:38:25,359 INFO L788 garLoopResultBuilder]: Registering result SAFE for location mainErr2ASSERT_VIOLATIONERROR_FUNCTION (13 of 17 remaining) [2022-03-17 19:38:25,360 INFO L788 garLoopResultBuilder]: Registering result SAFE for location mainErr13ASSERT_VIOLATIONERROR_FUNCTION (12 of 17 remaining) [2022-03-17 19:38:25,360 INFO L788 garLoopResultBuilder]: Registering result SAFE for location mainErr3ASSERT_VIOLATIONERROR_FUNCTION (11 of 17 remaining) [2022-03-17 19:38:25,360 INFO L788 garLoopResultBuilder]: Registering result SAFE for location mainErr14ASSERT_VIOLATIONERROR_FUNCTION (10 of 17 remaining) [2022-03-17 19:38:25,360 INFO L788 garLoopResultBuilder]: Registering result SAFE for location mainErr15ASSERT_VIOLATIONERROR_FUNCTION (9 of 17 remaining) [2022-03-17 19:38:25,360 INFO L788 garLoopResultBuilder]: Registering result SAFE for location mainErr4ASSERT_VIOLATIONERROR_FUNCTION (8 of 17 remaining) [2022-03-17 19:38:25,360 INFO L788 garLoopResultBuilder]: Registering result SAFE for location mainErr10ASSERT_VIOLATIONERROR_FUNCTION (7 of 17 remaining) [2022-03-17 19:38:25,360 INFO L788 garLoopResultBuilder]: Registering result SAFE for location mainErr16ASSERT_VIOLATIONERROR_FUNCTION (6 of 17 remaining) [2022-03-17 19:38:25,360 INFO L788 garLoopResultBuilder]: Registering result SAFE for location mainErr5ASSERT_VIOLATIONERROR_FUNCTION (5 of 17 remaining) [2022-03-17 19:38:25,360 INFO L788 garLoopResultBuilder]: Registering result SAFE for location mainErr8ASSERT_VIOLATIONERROR_FUNCTION (4 of 17 remaining) [2022-03-17 19:38:25,360 INFO L788 garLoopResultBuilder]: Registering result SAFE for location mainErr11ASSERT_VIOLATIONERROR_FUNCTION (3 of 17 remaining) [2022-03-17 19:38:25,361 INFO L788 garLoopResultBuilder]: Registering result SAFE for location mainErr9ASSERT_VIOLATIONERROR_FUNCTION (2 of 17 remaining) [2022-03-17 19:38:25,361 INFO L788 garLoopResultBuilder]: Registering result SAFE for location mainErr6ASSERT_VIOLATIONERROR_FUNCTION (1 of 17 remaining) [2022-03-17 19:38:25,361 INFO L788 garLoopResultBuilder]: Registering result SAFE for location mainErr7ASSERT_VIOLATIONERROR_FUNCTION (0 of 17 remaining) [2022-03-17 19:38:25,361 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-03-17 19:38:25,363 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-03-17 19:40:49,135 WARN L232 SmtUtils]: Spent 2.38m on a formula simplification. DAG size of input: 78 DAG size of output: 78 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-03-17 19:41:20,150 WARN L232 SmtUtils]: Spent 30.93s on a formula simplification. DAG size of input: 91 DAG size of output: 92 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-03-17 19:41:20,803 INFO L878 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |old(~__return_305~0)| ~__return_305~0) (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__tmp_247_0~0)| ~__tmp_247_0~0) (= |old(~__tmp_383_0~0)| ~__tmp_383_0~0) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-03-17 19:41:20,803 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2022-03-17 19:41:20,803 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2022-03-17 19:41:20,803 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-03-17 19:41:20,803 INFO L885 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-03-17 19:41:20,803 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-03-17 19:41:20,804 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-03-17 19:41:20,804 INFO L878 garLoopResultBuilder]: At program point mainENTRY(lines 15 375) the Hoare annotation is: (and (= |old(~__return_305~0)| ~__return_305~0) (= |old(~__tmp_247_0~0)| ~__tmp_247_0~0) (= |old(~__tmp_383_0~0)| ~__tmp_383_0~0)) [2022-03-17 19:41:20,804 INFO L882 garLoopResultBuilder]: For program point L20(lines 20 374) no Hoare annotation was computed. [2022-03-17 19:41:20,804 INFO L882 garLoopResultBuilder]: For program point L24(lines 24 369) no Hoare annotation was computed. [2022-03-17 19:41:20,804 INFO L882 garLoopResultBuilder]: For program point mainFINAL(lines 15 375) no Hoare annotation was computed. [2022-03-17 19:41:20,804 INFO L882 garLoopResultBuilder]: For program point L32(lines 32 368) no Hoare annotation was computed. [2022-03-17 19:41:20,804 INFO L882 garLoopResultBuilder]: For program point mainEXIT(lines 15 375) no Hoare annotation was computed. [2022-03-17 19:41:20,804 INFO L878 garLoopResultBuilder]: At program point L328(lines 32 368) the Hoare annotation is: (or (and (let ((.cse2 (<= main_~main__t~0 1))) (let ((.cse0 (let ((.cse3 (not (= main_~__VERIFIER_assert__cond~13 0)))) (or (and .cse2 .cse3) (and .cse3 (not (= main_~__VERIFIER_assert__cond~17 0)))))) (.cse1 (<= 1 main_~main__t~0))) (or (and (<= 1 main_~__VERIFIER_assert__cond~17) .cse0 .cse1) (and .cse2 .cse0 .cse1)))) (not (<= main_~main__tagbuf_len~0 main_~main__t~0))) (and (< main_~main__t~0 main_~main__tagbuf_len~0) (= main_~main__t~0 0))) [2022-03-17 19:41:20,804 INFO L882 garLoopResultBuilder]: For program point L266(lines 266 366) no Hoare annotation was computed. [2022-03-17 19:41:20,804 INFO L882 garLoopResultBuilder]: For program point L42(lines 42 256) no Hoare annotation was computed. [2022-03-17 19:41:20,804 INFO L882 garLoopResultBuilder]: For program point L277(lines 277 364) no Hoare annotation was computed. [2022-03-17 19:41:20,805 INFO L882 garLoopResultBuilder]: For program point L44(line 44) no Hoare annotation was computed. [2022-03-17 19:41:20,805 INFO L882 garLoopResultBuilder]: For program point L54(lines 54 254) no Hoare annotation was computed. [2022-03-17 19:41:20,805 INFO L882 garLoopResultBuilder]: For program point L279(line 279) no Hoare annotation was computed. [2022-03-17 19:41:20,805 INFO L878 garLoopResultBuilder]: At program point L357(lines 283 364) the Hoare annotation is: (and (not (<= main_~main__tagbuf_len~0 main_~main__t~0)) (let ((.cse1 (= main_~main__t~0 0))) (let ((.cse0 (let ((.cse2 (not (= main_~__VERIFIER_assert__cond~13 0))) (.cse3 (<= 0 main_~main__t~0))) (or (and .cse2 .cse3 .cse1) (and .cse2 .cse3 (not (= main_~__VERIFIER_assert__cond~16 0))))))) (or (and (<= 1 main_~__VERIFIER_assert__cond~17) .cse0) (and .cse1 .cse0))))) [2022-03-17 19:41:20,805 INFO L882 garLoopResultBuilder]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 44) no Hoare annotation was computed. [2022-03-17 19:41:20,805 INFO L882 garLoopResultBuilder]: For program point L56(line 56) no Hoare annotation was computed. [2022-03-17 19:41:20,805 INFO L878 garLoopResultBuilder]: At program point L196(lines 60 254) the Hoare annotation is: (and (<= 1 main_~__VERIFIER_assert__cond~1) (not (= main_~__VERIFIER_assert__cond~0 0)) (<= 1 main_~main__t~0) (<= main_~main__t~0 main_~main__tagbuf_len~0)) [2022-03-17 19:41:20,805 INFO L882 garLoopResultBuilder]: For program point mainErr12ASSERT_VIOLATIONERROR_FUNCTION(line 279) no Hoare annotation was computed. [2022-03-17 19:41:20,806 INFO L882 garLoopResultBuilder]: For program point L289(lines 289 363) no Hoare annotation was computed. [2022-03-17 19:41:20,806 INFO L882 garLoopResultBuilder]: For program point mainErr1ASSERT_VIOLATIONERROR_FUNCTION(line 56) no Hoare annotation was computed. [2022-03-17 19:41:20,806 INFO L882 garLoopResultBuilder]: For program point L71(lines 71 95) no Hoare annotation was computed. [2022-03-17 19:41:20,806 INFO L882 garLoopResultBuilder]: For program point L102(lines 102 252) no Hoare annotation was computed. [2022-03-17 19:41:20,806 INFO L882 garLoopResultBuilder]: For program point L296(lines 296 318) no Hoare annotation was computed. [2022-03-17 19:41:20,806 INFO L882 garLoopResultBuilder]: For program point L325(lines 325 362) no Hoare annotation was computed. [2022-03-17 19:41:20,806 INFO L882 garLoopResultBuilder]: For program point L73(line 73) no Hoare annotation was computed. [2022-03-17 19:41:20,806 INFO L882 garLoopResultBuilder]: For program point L83(lines 83 93) no Hoare annotation was computed. [2022-03-17 19:41:20,806 INFO L882 garLoopResultBuilder]: For program point L106(lines 106 210) no Hoare annotation was computed. [2022-03-17 19:41:20,806 INFO L882 garLoopResultBuilder]: For program point L216(lines 216 251) no Hoare annotation was computed. [2022-03-17 19:41:20,806 INFO L882 garLoopResultBuilder]: For program point L298(line 298) no Hoare annotation was computed. [2022-03-17 19:41:20,806 INFO L882 garLoopResultBuilder]: For program point L308(lines 308 316) no Hoare annotation was computed. [2022-03-17 19:41:20,807 INFO L882 garLoopResultBuilder]: For program point L337(lines 337 360) no Hoare annotation was computed. [2022-03-17 19:41:20,807 INFO L882 garLoopResultBuilder]: For program point mainErr2ASSERT_VIOLATIONERROR_FUNCTION(line 73) no Hoare annotation was computed. [2022-03-17 19:41:20,807 INFO L882 garLoopResultBuilder]: For program point L85(line 85) no Hoare annotation was computed. [2022-03-17 19:41:20,807 INFO L878 garLoopResultBuilder]: At program point L315(lines 32 368) the Hoare annotation is: (<= 0 main_~main__t~0) [2022-03-17 19:41:20,807 INFO L882 garLoopResultBuilder]: For program point L113(lines 113 204) no Hoare annotation was computed. [2022-03-17 19:41:20,807 INFO L878 garLoopResultBuilder]: At program point L250(lines 102 252) the Hoare annotation is: (and (<= 1 main_~__VERIFIER_assert__cond~1) (not (= main_~__VERIFIER_assert__cond~0 0)) (not (<= main_~main__tagbuf_len~0 main_~main__t~0)) (<= 1 main_~main__t~0)) [2022-03-17 19:41:20,807 INFO L882 garLoopResultBuilder]: For program point L223(lines 223 245) no Hoare annotation was computed. [2022-03-17 19:41:20,807 INFO L882 garLoopResultBuilder]: For program point mainErr13ASSERT_VIOLATIONERROR_FUNCTION(line 298) no Hoare annotation was computed. [2022-03-17 19:41:20,807 INFO L882 garLoopResultBuilder]: For program point L310(line 310) no Hoare annotation was computed. [2022-03-17 19:41:20,807 INFO L882 garLoopResultBuilder]: For program point L339(line 339) no Hoare annotation was computed. [2022-03-17 19:41:20,807 INFO L882 garLoopResultBuilder]: For program point L349(lines 349 358) no Hoare annotation was computed. [2022-03-17 19:41:20,807 INFO L882 garLoopResultBuilder]: For program point mainErr3ASSERT_VIOLATIONERROR_FUNCTION(line 85) no Hoare annotation was computed. [2022-03-17 19:41:20,807 INFO L882 garLoopResultBuilder]: For program point L115(line 115) no Hoare annotation was computed. [2022-03-17 19:41:20,807 INFO L882 garLoopResultBuilder]: For program point L125(lines 125 202) no Hoare annotation was computed. [2022-03-17 19:41:20,808 INFO L882 garLoopResultBuilder]: For program point L175(lines 175 199) no Hoare annotation was computed. [2022-03-17 19:41:20,808 INFO L882 garLoopResultBuilder]: For program point L225(line 225) no Hoare annotation was computed. [2022-03-17 19:41:20,808 INFO L882 garLoopResultBuilder]: For program point L235(lines 235 243) no Hoare annotation was computed. [2022-03-17 19:41:20,808 INFO L882 garLoopResultBuilder]: For program point mainErr14ASSERT_VIOLATIONERROR_FUNCTION(line 310) no Hoare annotation was computed. [2022-03-17 19:41:20,808 INFO L882 garLoopResultBuilder]: For program point mainErr15ASSERT_VIOLATIONERROR_FUNCTION(line 339) no Hoare annotation was computed. [2022-03-17 19:41:20,808 INFO L882 garLoopResultBuilder]: For program point L351(line 351) no Hoare annotation was computed. [2022-03-17 19:41:20,808 INFO L882 garLoopResultBuilder]: For program point mainErr4ASSERT_VIOLATIONERROR_FUNCTION(line 115) no Hoare annotation was computed. [2022-03-17 19:41:20,808 INFO L882 garLoopResultBuilder]: For program point L127(line 127) no Hoare annotation was computed. [2022-03-17 19:41:20,808 INFO L882 garLoopResultBuilder]: For program point L134(lines 134 201) no Hoare annotation was computed. [2022-03-17 19:41:20,808 INFO L882 garLoopResultBuilder]: For program point L177(line 177) no Hoare annotation was computed. [2022-03-17 19:41:20,808 INFO L882 garLoopResultBuilder]: For program point L187(lines 187 197) no Hoare annotation was computed. [2022-03-17 19:41:20,808 INFO L882 garLoopResultBuilder]: For program point mainErr10ASSERT_VIOLATIONERROR_FUNCTION(line 225) no Hoare annotation was computed. [2022-03-17 19:41:20,809 INFO L882 garLoopResultBuilder]: For program point L237(line 237) no Hoare annotation was computed. [2022-03-17 19:41:20,809 INFO L882 garLoopResultBuilder]: For program point mainErr16ASSERT_VIOLATIONERROR_FUNCTION(line 351) no Hoare annotation was computed. [2022-03-17 19:41:20,809 INFO L882 garLoopResultBuilder]: For program point mainErr5ASSERT_VIOLATIONERROR_FUNCTION(line 127) no Hoare annotation was computed. [2022-03-17 19:41:20,809 INFO L882 garLoopResultBuilder]: For program point L141(lines 141 163) no Hoare annotation was computed. [2022-03-17 19:41:20,809 INFO L882 garLoopResultBuilder]: For program point mainErr8ASSERT_VIOLATIONERROR_FUNCTION(line 177) no Hoare annotation was computed. [2022-03-17 19:41:20,809 INFO L882 garLoopResultBuilder]: For program point L189(line 189) no Hoare annotation was computed. [2022-03-17 19:41:20,809 INFO L882 garLoopResultBuilder]: For program point mainErr11ASSERT_VIOLATIONERROR_FUNCTION(line 237) no Hoare annotation was computed. [2022-03-17 19:41:20,809 INFO L882 garLoopResultBuilder]: For program point L143(line 143) no Hoare annotation was computed. [2022-03-17 19:41:20,809 INFO L882 garLoopResultBuilder]: For program point L153(lines 153 161) no Hoare annotation was computed. [2022-03-17 19:41:20,809 INFO L882 garLoopResultBuilder]: For program point mainErr9ASSERT_VIOLATIONERROR_FUNCTION(line 189) no Hoare annotation was computed. [2022-03-17 19:41:20,809 INFO L882 garLoopResultBuilder]: For program point mainErr6ASSERT_VIOLATIONERROR_FUNCTION(line 143) no Hoare annotation was computed. [2022-03-17 19:41:20,809 INFO L882 garLoopResultBuilder]: For program point L155(line 155) no Hoare annotation was computed. [2022-03-17 19:41:20,809 INFO L882 garLoopResultBuilder]: For program point mainErr7ASSERT_VIOLATIONERROR_FUNCTION(line 155) no Hoare annotation was computed. [2022-03-17 19:41:20,812 INFO L718 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 19:41:20,813 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-17 19:41:20,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.03 07:41:20 BasicIcfg [2022-03-17 19:41:20,839 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-17 19:41:20,840 INFO L158 Benchmark]: Toolchain (without parser) took 182786.00ms. Allocated memory was 176.2MB in the beginning and 638.6MB in the end (delta: 462.4MB). Free memory was 125.4MB in the beginning and 610.5MB in the end (delta: -485.1MB). Peak memory consumption was 357.1MB. Max. memory is 8.0GB. [2022-03-17 19:41:20,840 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 176.2MB. Free memory is still 141.9MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-17 19:41:20,840 INFO L158 Benchmark]: CACSL2BoogieTranslator took 272.02ms. Allocated memory is still 176.2MB. Free memory was 125.2MB in the beginning and 148.7MB in the end (delta: -23.6MB). Peak memory consumption was 12.8MB. Max. memory is 8.0GB. [2022-03-17 19:41:20,841 INFO L158 Benchmark]: Boogie Preprocessor took 48.37ms. Allocated memory is still 176.2MB. Free memory was 148.7MB in the beginning and 147.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-17 19:41:20,841 INFO L158 Benchmark]: RCFGBuilder took 352.39ms. Allocated memory is still 176.2MB. Free memory was 147.0MB in the beginning and 132.8MB in the end (delta: 14.2MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-03-17 19:41:20,841 INFO L158 Benchmark]: IcfgTransformer took 26.80ms. Allocated memory is still 176.2MB. Free memory was 132.8MB in the beginning and 131.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-17 19:41:20,841 INFO L158 Benchmark]: TraceAbstraction took 182071.99ms. Allocated memory was 176.2MB in the beginning and 638.6MB in the end (delta: 462.4MB). Free memory was 130.8MB in the beginning and 610.5MB in the end (delta: -479.7MB). Peak memory consumption was 363.1MB. Max. memory is 8.0GB. [2022-03-17 19:41:20,843 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 176.2MB. Free memory is still 141.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 272.02ms. Allocated memory is still 176.2MB. Free memory was 125.2MB in the beginning and 148.7MB in the end (delta: -23.6MB). Peak memory consumption was 12.8MB. Max. memory is 8.0GB. * Boogie Preprocessor took 48.37ms. Allocated memory is still 176.2MB. Free memory was 148.7MB in the beginning and 147.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 352.39ms. Allocated memory is still 176.2MB. Free memory was 147.0MB in the beginning and 132.8MB in the end (delta: 14.2MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * IcfgTransformer took 26.80ms. Allocated memory is still 176.2MB. Free memory was 132.8MB in the beginning and 131.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * TraceAbstraction took 182071.99ms. Allocated memory was 176.2MB in the beginning and 638.6MB in the end (delta: 462.4MB). Free memory was 130.8MB in the beginning and 610.5MB in the end (delta: -479.7MB). Peak memory consumption was 363.1MB. 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: 44]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 279]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 56]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 73]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 298]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 85]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 310]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 339]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 115]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 225]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 351]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 127]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 177]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 237]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 189]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 143]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 155]: 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 3 procedures, 76 locations, 17 error locations. Started 1 CEGAR loops. OverallTime: 182.0s, OverallIterations: 23, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 175.4s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1636 SdHoareTripleChecker+Valid, 2.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1636 mSDsluCounter, 2733 SdHoareTripleChecker+Invalid, 1.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1700 mSDsCounter, 210 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3268 IncrementalHoareTripleChecker+Invalid, 3478 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 210 mSolverCounterUnsat, 1033 mSDtfsCounter, 3268 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 340 GetRequests, 146 SyntacticMatches, 10 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=76occurred in iteration=0, InterpolantAutomatonStates: 194, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 23 MinimizatonAttempts, 365 StatesRemovedByMinimization, 19 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 9 PreInvPairs, 12 NumberOfFragments, 189 HoareAnnotationTreeSize, 9 FomulaSimplifications, 222439 FormulaSimplificationTreeSizeReduction, 174.8s HoareSimplificationTime, 9 FomulaSimplificationsInter, 3450178 FormulaSimplificationTreeSizeReductionInter, 0.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 456 NumberOfCodeBlocks, 456 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 474 ConstructedInterpolants, 0 QuantifiedInterpolants, 2171 SizeOfPredicates, 6 NumberOfNonLiveVariables, 305 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 27 InterpolantComputations, 21 PerfectInterpolantSequences, 8/24 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 17 specifications checked. All of them hold - InvariantResult [Line: 60]: Loop Invariant Derived loop invariant: ((1 <= __VERIFIER_assert__cond && !(__VERIFIER_assert__cond == 0)) && 1 <= main__t) && main__t <= main__tagbuf_len - InvariantResult [Line: 283]: Loop Invariant Derived loop invariant: !(main__tagbuf_len <= main__t) && ((1 <= __VERIFIER_assert__cond && (((!(__VERIFIER_assert__cond == 0) && 0 <= main__t) && main__t == 0) || ((!(__VERIFIER_assert__cond == 0) && 0 <= main__t) && !(__VERIFIER_assert__cond == 0)))) || (main__t == 0 && (((!(__VERIFIER_assert__cond == 0) && 0 <= main__t) && main__t == 0) || ((!(__VERIFIER_assert__cond == 0) && 0 <= main__t) && !(__VERIFIER_assert__cond == 0))))) - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: ((((1 <= __VERIFIER_assert__cond && ((main__t <= 1 && !(__VERIFIER_assert__cond == 0)) || (!(__VERIFIER_assert__cond == 0) && !(__VERIFIER_assert__cond == 0)))) && 1 <= main__t) || ((main__t <= 1 && ((main__t <= 1 && !(__VERIFIER_assert__cond == 0)) || (!(__VERIFIER_assert__cond == 0) && !(__VERIFIER_assert__cond == 0)))) && 1 <= main__t)) && !(main__tagbuf_len <= main__t)) || (main__t < main__tagbuf_len && main__t == 0) - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: 0 <= main__t - InvariantResult [Line: 102]: Loop Invariant Derived loop invariant: ((1 <= __VERIFIER_assert__cond && !(__VERIFIER_assert__cond == 0)) && !(main__tagbuf_len <= main__t)) && 1 <= main__t RESULT: Ultimate proved your program to be correct! [2022-03-17 19:41:20,878 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...