./Ultimate.py --spec /storage/repos/ultimate/trunk/examples/svcomp/properties/unreach-call.prp --file /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_string_eq_c_str_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 87fd6ee1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_string_eq_c_str_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 27380948315b42666094574aa2eff6b44da17707 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-87fd6ee [2020-12-04 19:23:42,217 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-04 19:23:42,223 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-04 19:23:42,289 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-04 19:23:42,289 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-04 19:23:42,291 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-04 19:23:42,294 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-04 19:23:42,297 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-04 19:23:42,299 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-04 19:23:42,301 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-04 19:23:42,303 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-04 19:23:42,305 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-04 19:23:42,306 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-04 19:23:42,308 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-04 19:23:42,309 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-04 19:23:42,311 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-04 19:23:42,312 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-04 19:23:42,313 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-04 19:23:42,316 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-04 19:23:42,320 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-04 19:23:42,322 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-04 19:23:42,329 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-04 19:23:42,331 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-04 19:23:42,333 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-04 19:23:42,337 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-04 19:23:42,337 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-04 19:23:42,338 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-04 19:23:42,339 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-04 19:23:42,340 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-04 19:23:42,342 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-04 19:23:42,343 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-04 19:23:42,344 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-04 19:23:42,346 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-04 19:23:42,347 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-04 19:23:42,349 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-04 19:23:42,349 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-04 19:23:42,350 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-04 19:23:42,350 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-04 19:23:42,351 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-04 19:23:42,352 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-04 19:23:42,354 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-04 19:23:42,360 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-04 19:23:42,389 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-04 19:23:42,390 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-04 19:23:42,391 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-04 19:23:42,392 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-04 19:23:42,392 INFO L138 SettingsManager]: * Use SBE=true [2020-12-04 19:23:42,393 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-04 19:23:42,393 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-04 19:23:42,393 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-04 19:23:42,393 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-04 19:23:42,394 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-04 19:23:42,394 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-04 19:23:42,394 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-04 19:23:42,394 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-04 19:23:42,395 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-04 19:23:42,395 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-04 19:23:42,395 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-04 19:23:42,396 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-04 19:23:42,396 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-04 19:23:42,396 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-04 19:23:42,396 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-04 19:23:42,397 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-04 19:23:42,397 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-04 19:23:42,397 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-04 19:23:42,398 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-04 19:23:42,398 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-04 19:23:42,398 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 27380948315b42666094574aa2eff6b44da17707 [2020-12-04 19:23:42,890 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-04 19:23:42,937 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-04 19:23:42,942 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-04 19:23:42,944 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-04 19:23:42,945 INFO L275 PluginConnector]: CDTParser initialized [2020-12-04 19:23:42,947 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_string_eq_c_str_harness.i [2020-12-04 19:23:43,065 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa863a806/7d5de26ff640402689f401bdb6dd59ef/FLAGef678f1f2 [2020-12-04 19:23:44,295 INFO L306 CDTParser]: Found 1 translation units. [2020-12-04 19:23:44,296 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_string_eq_c_str_harness.i [2020-12-04 19:23:44,362 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa863a806/7d5de26ff640402689f401bdb6dd59ef/FLAGef678f1f2 [2020-12-04 19:23:44,604 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa863a806/7d5de26ff640402689f401bdb6dd59ef [2020-12-04 19:23:44,608 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-04 19:23:44,611 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-04 19:23:44,613 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-04 19:23:44,613 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-04 19:23:44,617 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-04 19:23:44,619 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.12 07:23:44" (1/1) ... [2020-12-04 19:23:44,624 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f15f4ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.12 07:23:44, skipping insertion in model container [2020-12-04 19:23:44,624 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.12 07:23:44" (1/1) ... [2020-12-04 19:23:44,635 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-04 19:23:44,767 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-04 19:23:45,122 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_string_eq_c_str_harness.i[4493,4506] [2020-12-04 19:23:45,134 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_string_eq_c_str_harness.i[4553,4566] [2020-12-04 19:23:45,173 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2020-12-04 19:23:45,184 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2020-12-04 19:23:46,447 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-04 19:23:46,448 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-04 19:23:46,449 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-04 19:23:46,450 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-04 19:23:46,452 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-04 19:23:46,472 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-04 19:23:46,473 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-04 19:23:46,476 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-04 19:23:46,477 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-04 19:23:47,035 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2020-12-04 19:23:47,037 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2020-12-04 19:23:47,039 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2020-12-04 19:23:47,040 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2020-12-04 19:23:47,043 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2020-12-04 19:23:47,045 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2020-12-04 19:23:47,046 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2020-12-04 19:23:47,047 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2020-12-04 19:23:47,048 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2020-12-04 19:23:47,049 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2020-12-04 19:23:47,415 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2020-12-04 19:23:47,685 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-04 19:23:47,686 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-04 19:23:47,716 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-04 19:23:47,821 INFO L203 MainTranslator]: Completed pre-run [2020-12-04 19:23:47,854 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_string_eq_c_str_harness.i[4493,4506] [2020-12-04 19:23:47,859 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_string_eq_c_str_harness.i[4553,4566] [2020-12-04 19:23:47,865 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2020-12-04 19:23:47,866 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2020-12-04 19:23:47,961 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-04 19:23:47,963 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-04 19:23:47,964 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-04 19:23:47,964 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-04 19:23:47,967 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-04 19:23:47,988 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-04 19:23:47,990 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-04 19:23:47,995 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-04 19:23:47,999 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-04 19:23:48,093 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2020-12-04 19:23:48,098 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2020-12-04 19:23:48,100 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2020-12-04 19:23:48,103 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2020-12-04 19:23:48,106 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2020-12-04 19:23:48,108 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2020-12-04 19:23:48,109 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2020-12-04 19:23:48,110 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2020-12-04 19:23:48,111 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2020-12-04 19:23:48,112 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2020-12-04 19:23:48,162 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2020-12-04 19:23:48,382 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-04 19:23:48,384 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-04 19:23:48,415 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-04 19:23:49,867 INFO L208 MainTranslator]: Completed translation [2020-12-04 19:23:49,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.12 07:23:49 WrapperNode [2020-12-04 19:23:49,868 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-04 19:23:49,870 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-04 19:23:49,870 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-04 19:23:49,870 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-04 19:23:49,880 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.12 07:23:49" (1/1) ... [2020-12-04 19:23:50,081 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.12 07:23:49" (1/1) ... [2020-12-04 19:23:50,265 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-04 19:23:50,266 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-04 19:23:50,267 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-04 19:23:50,268 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-04 19:23:50,284 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.12 07:23:49" (1/1) ... [2020-12-04 19:23:50,285 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.12 07:23:49" (1/1) ... [2020-12-04 19:23:50,311 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.12 07:23:49" (1/1) ... [2020-12-04 19:23:50,312 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.12 07:23:49" (1/1) ... [2020-12-04 19:23:50,384 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.12 07:23:49" (1/1) ... [2020-12-04 19:23:50,400 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.12 07:23:49" (1/1) ... [2020-12-04 19:23:50,421 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.12 07:23:49" (1/1) ... [2020-12-04 19:23:50,442 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-04 19:23:50,447 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-04 19:23:50,448 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-04 19:23:50,448 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-04 19:23:50,449 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.12 07:23:49" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-04 19:23:50,580 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-04 19:23:50,580 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-04 19:23:50,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-04 19:23:50,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-04 19:23:50,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-04 19:23:50,581 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-04 19:23:50,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-04 19:23:50,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-04 19:23:50,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-04 19:23:51,906 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-04 19:23:51,907 INFO L299 CfgBuilder]: Removed 71 assume(true) statements. [2020-12-04 19:23:51,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.12 07:23:51 BoogieIcfgContainer [2020-12-04 19:23:51,910 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-04 19:23:51,912 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-04 19:23:51,912 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-04 19:23:51,918 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-04 19:23:51,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.12 07:23:44" (1/3) ... [2020-12-04 19:23:51,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@622bc9a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.12 07:23:51, skipping insertion in model container [2020-12-04 19:23:51,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.12 07:23:49" (2/3) ... [2020-12-04 19:23:51,921 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@622bc9a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.12 07:23:51, skipping insertion in model container [2020-12-04 19:23:51,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.12 07:23:51" (3/3) ... [2020-12-04 19:23:51,923 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_string_eq_c_str_harness.i [2020-12-04 19:23:51,943 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-04 19:23:51,949 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-12-04 19:23:51,965 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-04 19:23:52,000 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-04 19:23:52,000 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-04 19:23:52,001 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-04 19:23:52,001 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-04 19:23:52,001 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-04 19:23:52,001 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-04 19:23:52,001 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-04 19:23:52,002 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-04 19:23:52,022 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states. [2020-12-04 19:23:52,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-04 19:23:52,031 INFO L414 BasicCegarLoop]: Found error trace [2020-12-04 19:23:52,033 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-04 19:23:52,033 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-04 19:23:52,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-04 19:23:52,042 INFO L82 PathProgramCache]: Analyzing trace with hash -1267490943, now seen corresponding path program 1 times [2020-12-04 19:23:52,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-04 19:23:52,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464775713] [2020-12-04 19:23:52,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-04 19:23:52,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-04 19:23:52,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-04 19:23:52,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464775713] [2020-12-04 19:23:52,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-04 19:23:52,676 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-04 19:23:52,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781949737] [2020-12-04 19:23:52,694 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-04 19:23:52,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-04 19:23:52,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-04 19:23:52,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-04 19:23:52,731 INFO L87 Difference]: Start difference. First operand 86 states. Second operand 2 states. [2020-12-04 19:23:52,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-04 19:23:52,793 INFO L93 Difference]: Finished difference Result 166 states and 222 transitions. [2020-12-04 19:23:52,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-04 19:23:52,795 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2020-12-04 19:23:52,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-04 19:23:52,812 INFO L225 Difference]: With dead ends: 166 [2020-12-04 19:23:52,813 INFO L226 Difference]: Without dead ends: 80 [2020-12-04 19:23:52,819 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-04 19:23:52,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-12-04 19:23:52,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-12-04 19:23:52,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-12-04 19:23:52,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 92 transitions. [2020-12-04 19:23:52,896 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 92 transitions. Word has length 22 [2020-12-04 19:23:52,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-04 19:23:52,898 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 92 transitions. [2020-12-04 19:23:52,898 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-04 19:23:52,899 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 92 transitions. [2020-12-04 19:23:52,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-04 19:23:52,902 INFO L414 BasicCegarLoop]: Found error trace [2020-12-04 19:23:52,903 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-04 19:23:52,904 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-04 19:23:52,905 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-04 19:23:52,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-04 19:23:52,911 INFO L82 PathProgramCache]: Analyzing trace with hash -1009325505, now seen corresponding path program 1 times [2020-12-04 19:23:52,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-04 19:23:52,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489250385] [2020-12-04 19:23:52,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-04 19:23:53,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-04 19:23:53,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-04 19:23:53,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489250385] [2020-12-04 19:23:53,170 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-04 19:23:53,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-04 19:23:53,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549476801] [2020-12-04 19:23:53,172 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-04 19:23:53,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-04 19:23:53,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-04 19:23:53,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-04 19:23:53,175 INFO L87 Difference]: Start difference. First operand 80 states and 92 transitions. Second operand 4 states. [2020-12-04 19:23:53,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-04 19:23:53,231 INFO L93 Difference]: Finished difference Result 144 states and 166 transitions. [2020-12-04 19:23:53,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-04 19:23:53,232 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-12-04 19:23:53,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-04 19:23:53,234 INFO L225 Difference]: With dead ends: 144 [2020-12-04 19:23:53,234 INFO L226 Difference]: Without dead ends: 80 [2020-12-04 19:23:53,236 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-04 19:23:53,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-12-04 19:23:53,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-12-04 19:23:53,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-12-04 19:23:53,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 91 transitions. [2020-12-04 19:23:53,246 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 91 transitions. Word has length 22 [2020-12-04 19:23:53,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-04 19:23:53,247 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 91 transitions. [2020-12-04 19:23:53,247 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-04 19:23:53,247 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 91 transitions. [2020-12-04 19:23:53,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-04 19:23:53,249 INFO L414 BasicCegarLoop]: Found error trace [2020-12-04 19:23:53,249 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-04 19:23:53,249 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-04 19:23:53,250 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-04 19:23:53,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-04 19:23:53,251 INFO L82 PathProgramCache]: Analyzing trace with hash 2090456739, now seen corresponding path program 1 times [2020-12-04 19:23:53,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-04 19:23:53,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780427755] [2020-12-04 19:23:53,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-04 19:23:53,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-04 19:23:53,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-04 19:23:53,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780427755] [2020-12-04 19:23:53,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-04 19:23:53,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-04 19:23:53,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573241662] [2020-12-04 19:23:53,559 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-04 19:23:53,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-04 19:23:53,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-04 19:23:53,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-12-04 19:23:53,561 INFO L87 Difference]: Start difference. First operand 80 states and 91 transitions. Second operand 9 states. [2020-12-04 19:23:53,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-04 19:23:53,829 INFO L93 Difference]: Finished difference Result 110 states and 122 transitions. [2020-12-04 19:23:53,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-04 19:23:53,830 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 33 [2020-12-04 19:23:53,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-04 19:23:53,832 INFO L225 Difference]: With dead ends: 110 [2020-12-04 19:23:53,832 INFO L226 Difference]: Without dead ends: 80 [2020-12-04 19:23:53,835 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2020-12-04 19:23:53,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-12-04 19:23:53,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-12-04 19:23:53,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-12-04 19:23:53,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 90 transitions. [2020-12-04 19:23:53,858 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 90 transitions. Word has length 33 [2020-12-04 19:23:53,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-04 19:23:53,859 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 90 transitions. [2020-12-04 19:23:53,860 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-04 19:23:53,860 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 90 transitions. [2020-12-04 19:23:53,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-04 19:23:53,862 INFO L414 BasicCegarLoop]: Found error trace [2020-12-04 19:23:53,863 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-04 19:23:53,863 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-04 19:23:53,863 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-04 19:23:53,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-04 19:23:53,867 INFO L82 PathProgramCache]: Analyzing trace with hash 1931203523, now seen corresponding path program 1 times [2020-12-04 19:23:53,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-04 19:23:53,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234950492] [2020-12-04 19:23:53,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-04 19:23:53,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-04 19:23:54,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-04 19:23:54,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234950492] [2020-12-04 19:23:54,092 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-04 19:23:54,092 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-04 19:23:54,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412061877] [2020-12-04 19:23:54,094 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-04 19:23:54,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-04 19:23:54,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-04 19:23:54,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-04 19:23:54,099 INFO L87 Difference]: Start difference. First operand 80 states and 90 transitions. Second operand 4 states. [2020-12-04 19:23:54,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-04 19:23:54,164 INFO L93 Difference]: Finished difference Result 132 states and 150 transitions. [2020-12-04 19:23:54,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-04 19:23:54,165 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-12-04 19:23:54,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-04 19:23:54,167 INFO L225 Difference]: With dead ends: 132 [2020-12-04 19:23:54,169 INFO L226 Difference]: Without dead ends: 80 [2020-12-04 19:23:54,172 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-04 19:23:54,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-12-04 19:23:54,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-12-04 19:23:54,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-12-04 19:23:54,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 89 transitions. [2020-12-04 19:23:54,200 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 89 transitions. Word has length 34 [2020-12-04 19:23:54,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-04 19:23:54,202 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 89 transitions. [2020-12-04 19:23:54,203 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-04 19:23:54,203 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 89 transitions. [2020-12-04 19:23:54,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-12-04 19:23:54,207 INFO L414 BasicCegarLoop]: Found error trace [2020-12-04 19:23:54,207 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-04 19:23:54,208 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-04 19:23:54,211 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-04 19:23:54,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-04 19:23:54,214 INFO L82 PathProgramCache]: Analyzing trace with hash 268760160, now seen corresponding path program 1 times [2020-12-04 19:23:54,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-04 19:23:54,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013680019] [2020-12-04 19:23:54,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-04 19:23:54,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-04 19:23:54,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-04 19:23:54,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013680019] [2020-12-04 19:23:54,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-04 19:23:54,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-04 19:23:54,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124948605] [2020-12-04 19:23:54,495 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-04 19:23:54,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-04 19:23:54,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-04 19:23:54,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-12-04 19:23:54,504 INFO L87 Difference]: Start difference. First operand 80 states and 89 transitions. Second operand 9 states. [2020-12-04 19:23:54,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-04 19:23:54,724 INFO L93 Difference]: Finished difference Result 125 states and 139 transitions. [2020-12-04 19:23:54,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-04 19:23:54,725 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 43 [2020-12-04 19:23:54,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-04 19:23:54,727 INFO L225 Difference]: With dead ends: 125 [2020-12-04 19:23:54,727 INFO L226 Difference]: Without dead ends: 80 [2020-12-04 19:23:54,728 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2020-12-04 19:23:54,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-12-04 19:23:54,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-12-04 19:23:54,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-12-04 19:23:54,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 88 transitions. [2020-12-04 19:23:54,739 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 88 transitions. Word has length 43 [2020-12-04 19:23:54,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-04 19:23:54,739 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 88 transitions. [2020-12-04 19:23:54,739 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-04 19:23:54,740 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 88 transitions. [2020-12-04 19:23:54,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-12-04 19:23:54,742 INFO L414 BasicCegarLoop]: Found error trace [2020-12-04 19:23:54,742 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-04 19:23:54,742 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-04 19:23:54,743 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-04 19:23:54,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-04 19:23:54,743 INFO L82 PathProgramCache]: Analyzing trace with hash -1742888769, now seen corresponding path program 1 times [2020-12-04 19:23:54,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-04 19:23:54,744 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695512832] [2020-12-04 19:23:54,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-04 19:23:54,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-04 19:23:55,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-04 19:23:55,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695512832] [2020-12-04 19:23:55,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-04 19:23:55,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-12-04 19:23:55,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204769623] [2020-12-04 19:23:55,013 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-04 19:23:55,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-04 19:23:55,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-04 19:23:55,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-12-04 19:23:55,014 INFO L87 Difference]: Start difference. First operand 80 states and 88 transitions. Second operand 12 states. [2020-12-04 19:23:55,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-04 19:23:55,390 INFO L93 Difference]: Finished difference Result 129 states and 143 transitions. [2020-12-04 19:23:55,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-04 19:23:55,391 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 48 [2020-12-04 19:23:55,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-04 19:23:55,392 INFO L225 Difference]: With dead ends: 129 [2020-12-04 19:23:55,392 INFO L226 Difference]: Without dead ends: 80 [2020-12-04 19:23:55,394 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2020-12-04 19:23:55,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-12-04 19:23:55,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-12-04 19:23:55,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-12-04 19:23:55,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 84 transitions. [2020-12-04 19:23:55,402 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 84 transitions. Word has length 48 [2020-12-04 19:23:55,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-04 19:23:55,403 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 84 transitions. [2020-12-04 19:23:55,403 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-04 19:23:55,403 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 84 transitions. [2020-12-04 19:23:55,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-12-04 19:23:55,405 INFO L414 BasicCegarLoop]: Found error trace [2020-12-04 19:23:55,405 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-04 19:23:55,405 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-04 19:23:55,406 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-04 19:23:55,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-04 19:23:55,407 INFO L82 PathProgramCache]: Analyzing trace with hash -156387909, now seen corresponding path program 1 times [2020-12-04 19:23:55,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-04 19:23:55,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718631858] [2020-12-04 19:23:55,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-04 19:23:55,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-04 19:23:55,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-04 19:23:55,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718631858] [2020-12-04 19:23:55,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-04 19:23:55,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-12-04 19:23:55,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228596878] [2020-12-04 19:23:55,759 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-04 19:23:55,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-04 19:23:55,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-04 19:23:55,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-12-04 19:23:55,773 INFO L87 Difference]: Start difference. First operand 80 states and 84 transitions. Second operand 14 states. [2020-12-04 19:23:56,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-04 19:23:56,197 INFO L93 Difference]: Finished difference Result 110 states and 113 transitions. [2020-12-04 19:23:56,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-04 19:23:56,198 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 48 [2020-12-04 19:23:56,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-04 19:23:56,202 INFO L225 Difference]: With dead ends: 110 [2020-12-04 19:23:56,202 INFO L226 Difference]: Without dead ends: 80 [2020-12-04 19:23:56,204 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=178, Invalid=472, Unknown=0, NotChecked=0, Total=650 [2020-12-04 19:23:56,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-12-04 19:23:56,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-12-04 19:23:56,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-12-04 19:23:56,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 83 transitions. [2020-12-04 19:23:56,237 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 83 transitions. Word has length 48 [2020-12-04 19:23:56,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-04 19:23:56,238 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 83 transitions. [2020-12-04 19:23:56,238 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-04 19:23:56,238 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 83 transitions. [2020-12-04 19:23:56,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-04 19:23:56,243 INFO L414 BasicCegarLoop]: Found error trace [2020-12-04 19:23:56,244 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-04 19:23:56,244 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-04 19:23:56,245 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-04 19:23:56,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-04 19:23:56,248 INFO L82 PathProgramCache]: Analyzing trace with hash -168490957, now seen corresponding path program 1 times [2020-12-04 19:23:56,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-04 19:23:56,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056724889] [2020-12-04 19:23:56,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-04 19:23:57,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-04 19:23:58,249 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2020-12-04 19:23:58,425 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 42 [2020-12-04 19:23:58,606 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2020-12-04 19:23:58,891 WARN L197 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 45 [2020-12-04 19:23:59,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-04 19:23:59,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056724889] [2020-12-04 19:23:59,680 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-04 19:23:59,681 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2020-12-04 19:23:59,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545980201] [2020-12-04 19:23:59,683 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-12-04 19:23:59,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-04 19:23:59,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-12-04 19:23:59,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=485, Unknown=0, NotChecked=0, Total=552 [2020-12-04 19:23:59,686 INFO L87 Difference]: Start difference. First operand 80 states and 83 transitions. Second operand 24 states. [2020-12-04 19:24:00,273 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-12-04 19:24:00,552 WARN L197 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2020-12-04 19:24:00,816 WARN L197 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2020-12-04 19:24:01,164 WARN L197 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65 [2020-12-04 19:24:01,327 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-12-04 19:24:01,581 WARN L197 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2020-12-04 19:24:01,834 WARN L197 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2020-12-04 19:24:02,032 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 44 [2020-12-04 19:24:02,398 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 45 [2020-12-04 19:24:02,701 WARN L197 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 48 [2020-12-04 19:24:02,944 WARN L197 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 52 [2020-12-04 19:24:03,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-04 19:24:03,103 INFO L93 Difference]: Finished difference Result 147 states and 151 transitions. [2020-12-04 19:24:03,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-12-04 19:24:03,104 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 55 [2020-12-04 19:24:03,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-04 19:24:03,107 INFO L225 Difference]: With dead ends: 147 [2020-12-04 19:24:03,108 INFO L226 Difference]: Without dead ends: 145 [2020-12-04 19:24:03,109 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=422, Invalid=1300, Unknown=0, NotChecked=0, Total=1722 [2020-12-04 19:24:03,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-12-04 19:24:03,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 91. [2020-12-04 19:24:03,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-12-04 19:24:03,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 95 transitions. [2020-12-04 19:24:03,148 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 95 transitions. Word has length 55 [2020-12-04 19:24:03,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-04 19:24:03,149 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 95 transitions. [2020-12-04 19:24:03,149 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-12-04 19:24:03,150 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 95 transitions. [2020-12-04 19:24:03,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-04 19:24:03,152 INFO L414 BasicCegarLoop]: Found error trace [2020-12-04 19:24:03,152 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-04 19:24:03,155 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-04 19:24:03,156 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-04 19:24:03,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-04 19:24:03,157 INFO L82 PathProgramCache]: Analyzing trace with hash 1975205668, now seen corresponding path program 1 times [2020-12-04 19:24:03,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-04 19:24:03,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672970933] [2020-12-04 19:24:03,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-04 19:24:03,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-04 19:24:03,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-04 19:24:03,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672970933] [2020-12-04 19:24:03,344 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-04 19:24:03,344 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-04 19:24:03,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031568491] [2020-12-04 19:24:03,345 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-04 19:24:03,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-04 19:24:03,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-04 19:24:03,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-04 19:24:03,347 INFO L87 Difference]: Start difference. First operand 91 states and 95 transitions. Second operand 5 states. [2020-12-04 19:24:03,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-04 19:24:03,402 INFO L93 Difference]: Finished difference Result 122 states and 125 transitions. [2020-12-04 19:24:03,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-04 19:24:03,403 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 55 [2020-12-04 19:24:03,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-04 19:24:03,406 INFO L225 Difference]: With dead ends: 122 [2020-12-04 19:24:03,407 INFO L226 Difference]: Without dead ends: 91 [2020-12-04 19:24:03,412 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-04 19:24:03,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-12-04 19:24:03,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2020-12-04 19:24:03,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-12-04 19:24:03,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 93 transitions. [2020-12-04 19:24:03,425 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 93 transitions. Word has length 55 [2020-12-04 19:24:03,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-04 19:24:03,427 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 93 transitions. [2020-12-04 19:24:03,427 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-04 19:24:03,428 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 93 transitions. [2020-12-04 19:24:03,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-12-04 19:24:03,435 INFO L414 BasicCegarLoop]: Found error trace [2020-12-04 19:24:03,435 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-04 19:24:03,436 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-04 19:24:03,436 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-04 19:24:03,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-04 19:24:03,437 INFO L82 PathProgramCache]: Analyzing trace with hash 1306702829, now seen corresponding path program 1 times [2020-12-04 19:24:03,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-04 19:24:03,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764103796] [2020-12-04 19:24:03,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-04 19:24:03,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-04 19:24:03,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-04 19:24:03,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764103796] [2020-12-04 19:24:03,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-04 19:24:03,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-04 19:24:03,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036411533] [2020-12-04 19:24:03,799 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-04 19:24:03,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-04 19:24:03,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-04 19:24:03,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-12-04 19:24:03,805 INFO L87 Difference]: Start difference. First operand 91 states and 93 transitions. Second operand 10 states. [2020-12-04 19:24:04,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-04 19:24:04,059 INFO L93 Difference]: Finished difference Result 91 states and 93 transitions. [2020-12-04 19:24:04,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-04 19:24:04,060 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 58 [2020-12-04 19:24:04,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-04 19:24:04,061 INFO L225 Difference]: With dead ends: 91 [2020-12-04 19:24:04,061 INFO L226 Difference]: Without dead ends: 89 [2020-12-04 19:24:04,062 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2020-12-04 19:24:04,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-12-04 19:24:04,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2020-12-04 19:24:04,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-12-04 19:24:04,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 91 transitions. [2020-12-04 19:24:04,074 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 91 transitions. Word has length 58 [2020-12-04 19:24:04,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-04 19:24:04,074 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 91 transitions. [2020-12-04 19:24:04,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-04 19:24:04,075 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 91 transitions. [2020-12-04 19:24:04,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-04 19:24:04,075 INFO L414 BasicCegarLoop]: Found error trace [2020-12-04 19:24:04,076 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-04 19:24:04,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-04 19:24:04,076 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-04 19:24:04,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-04 19:24:04,077 INFO L82 PathProgramCache]: Analyzing trace with hash -876092870, now seen corresponding path program 1 times [2020-12-04 19:24:04,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-04 19:24:04,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203256588] [2020-12-04 19:24:04,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-04 19:24:04,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-04 19:24:06,343 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 39 [2020-12-04 19:24:06,555 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2020-12-04 19:24:06,935 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 51 [2020-12-04 19:24:07,128 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 50 [2020-12-04 19:24:07,317 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 43 [2020-12-04 19:24:07,665 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 38 [2020-12-04 19:24:08,226 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-04 19:24:08,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203256588] [2020-12-04 19:24:08,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355893155] [2020-12-04 19:24:08,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-04 19:24:08,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-04 19:24:08,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 870 conjuncts, 86 conjunts are in the unsatisfiable core [2020-12-04 19:24:08,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-04 19:24:09,026 INFO L348 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2020-12-04 19:24:09,027 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2020-12-04 19:24:09,029 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-04 19:24:09,040 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-04 19:24:09,042 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-04 19:24:09,043 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:22, output treesize:19 [2020-12-04 19:24:09,686 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-04 19:24:09,897 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-04 19:24:09,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-04 19:24:09,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [24] total 34 [2020-12-04 19:24:09,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131748819] [2020-12-04 19:24:09,899 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-04 19:24:09,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-04 19:24:09,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-04 19:24:09,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=1041, Unknown=0, NotChecked=0, Total=1122 [2020-12-04 19:24:09,901 INFO L87 Difference]: Start difference. First operand 89 states and 91 transitions. Second operand 14 states. [2020-12-04 19:24:11,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-04 19:24:11,900 INFO L93 Difference]: Finished difference Result 89 states and 91 transitions. [2020-12-04 19:24:11,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-04 19:24:11,902 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 59 [2020-12-04 19:24:11,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-04 19:24:11,906 INFO L225 Difference]: With dead ends: 89 [2020-12-04 19:24:11,906 INFO L226 Difference]: Without dead ends: 87 [2020-12-04 19:24:11,911 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 51 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 362 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=232, Invalid=2024, Unknown=0, NotChecked=0, Total=2256 [2020-12-04 19:24:11,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-12-04 19:24:11,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 76. [2020-12-04 19:24:11,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-12-04 19:24:11,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 77 transitions. [2020-12-04 19:24:11,928 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 77 transitions. Word has length 59 [2020-12-04 19:24:11,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-04 19:24:11,928 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 77 transitions. [2020-12-04 19:24:11,928 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-04 19:24:11,929 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 77 transitions. [2020-12-04 19:24:11,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-04 19:24:11,929 INFO L414 BasicCegarLoop]: Found error trace [2020-12-04 19:24:11,930 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-04 19:24:12,143 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-12-04 19:24:12,144 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-04 19:24:12,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-04 19:24:12,144 INFO L82 PathProgramCache]: Analyzing trace with hash 1611098735, now seen corresponding path program 1 times [2020-12-04 19:24:12,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-04 19:24:12,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698491429] [2020-12-04 19:24:12,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-04 19:24:12,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-04 19:24:12,479 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-04 19:24:12,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-04 19:24:12,790 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-04 19:24:12,888 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-04 19:24:12,889 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-04 19:24:12,889 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-04 19:24:13,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.12 07:24:13 BoogieIcfgContainer [2020-12-04 19:24:13,059 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-04 19:24:13,060 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-04 19:24:13,061 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-04 19:24:13,061 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-04 19:24:13,062 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.12 07:23:51" (3/4) ... [2020-12-04 19:24:13,066 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-04 19:24:13,242 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-12-04 19:24:13,242 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-04 19:24:13,244 INFO L168 Benchmark]: Toolchain (without parser) took 28633.15 ms. Allocated memory was 48.2 MB in the beginning and 333.4 MB in the end (delta: 285.2 MB). Free memory was 26.2 MB in the beginning and 206.5 MB in the end (delta: -180.3 MB). Peak memory consumption was 107.0 MB. Max. memory is 16.1 GB. [2020-12-04 19:24:13,245 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 39.8 MB. Free memory was 18.1 MB in the beginning and 18.0 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-04 19:24:13,245 INFO L168 Benchmark]: CACSL2BoogieTranslator took 5255.96 ms. Allocated memory was 48.2 MB in the beginning and 125.8 MB in the end (delta: 77.6 MB). Free memory was 26.1 MB in the beginning and 69.7 MB in the end (delta: -43.7 MB). Peak memory consumption was 66.8 MB. Max. memory is 16.1 GB. [2020-12-04 19:24:13,246 INFO L168 Benchmark]: Boogie Procedure Inliner took 395.72 ms. Allocated memory is still 125.8 MB. Free memory was 69.7 MB in the beginning and 60.3 MB in the end (delta: 9.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-04 19:24:13,246 INFO L168 Benchmark]: Boogie Preprocessor took 175.77 ms. Allocated memory is still 125.8 MB. Free memory was 60.3 MB in the beginning and 56.1 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-04 19:24:13,247 INFO L168 Benchmark]: RCFGBuilder took 1462.55 ms. Allocated memory is still 125.8 MB. Free memory was 56.1 MB in the beginning and 44.2 MB in the end (delta: 11.9 MB). Peak memory consumption was 40.2 MB. Max. memory is 16.1 GB. [2020-12-04 19:24:13,248 INFO L168 Benchmark]: TraceAbstraction took 21147.40 ms. Allocated memory was 125.8 MB in the beginning and 333.4 MB in the end (delta: 207.6 MB). Free memory was 44.2 MB in the beginning and 217.0 MB in the end (delta: -172.7 MB). Peak memory consumption was 35.9 MB. Max. memory is 16.1 GB. [2020-12-04 19:24:13,248 INFO L168 Benchmark]: Witness Printer took 182.16 ms. Allocated memory is still 333.4 MB. Free memory was 217.0 MB in the beginning and 206.5 MB in the end (delta: 10.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-04 19:24:13,254 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 39.8 MB. Free memory was 18.1 MB in the beginning and 18.0 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 5255.96 ms. Allocated memory was 48.2 MB in the beginning and 125.8 MB in the end (delta: 77.6 MB). Free memory was 26.1 MB in the beginning and 69.7 MB in the end (delta: -43.7 MB). Peak memory consumption was 66.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 395.72 ms. Allocated memory is still 125.8 MB. Free memory was 69.7 MB in the beginning and 60.3 MB in the end (delta: 9.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 175.77 ms. Allocated memory is still 125.8 MB. Free memory was 60.3 MB in the beginning and 56.1 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1462.55 ms. Allocated memory is still 125.8 MB. Free memory was 56.1 MB in the beginning and 44.2 MB in the end (delta: 11.9 MB). Peak memory consumption was 40.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 21147.40 ms. Allocated memory was 125.8 MB in the beginning and 333.4 MB in the end (delta: 207.6 MB). Free memory was 44.2 MB in the beginning and 217.0 MB in the end (delta: -172.7 MB). Peak memory consumption was 35.9 MB. Max. memory is 16.1 GB. * Witness Printer took 182.16 ms. Allocated memory is still 333.4 MB. Free memory was 217.0 MB in the beginning and 206.5 MB in the end (delta: 10.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 223]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L6867-L6872] static struct aws_allocator s_can_fail_allocator_static = { .mem_acquire = s_can_fail_malloc_allocator, .mem_release = s_can_fail_free_allocator, .mem_realloc = s_can_fail_realloc_allocator, .mem_calloc = s_can_fail_calloc_allocator, }; [L7967-L7979] static const uint8_t s_tolower_table[256] = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', 91, 92, 93, 94, 95, 96, 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', 123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143, 144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159, 160, 161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175, 176, 177, 178, 179, 180, 181, 182, 183, 184, 185, 186, 187, 188, 189, 190, 191, 192, 193, 194, 195, 196, 197, 198, 199, 200, 201, 202, 203, 204, 205, 206, 207, 208, 209, 210, 211, 212, 213, 214, 215, 216, 217, 218, 219, 220, 221, 222, 223, 224, 225, 226, 227, 228, 229, 230, 231, 232, 233, 234, 235, 236, 237, 238, 239, 240, 241, 242, 243, 244, 245, 246, 247, 248, 249, 250, 251, 252, 253, 254, 255}; VAL [s_can_fail_allocator_static={257:0}, s_tolower_table={262:0}] [L261] return __VERIFIER_nondet_bool(); [L8912-L8913] EXPR nondet_bool() ? ensure_string_is_allocated_bounded_length(16) : ((void *)0) [L266] return __VERIFIER_nondet_ulong(); [L6802] size_t len = nondet_uint64_t(); [L211] COND FALSE !(!cond) VAL [s_can_fail_allocator_static={257:0}, s_tolower_table={262:0}] [L211] COND FALSE !(!cond) VAL [s_can_fail_allocator_static={257:0}, s_tolower_table={262:0}] [L6887] return malloc(size); VAL [s_can_fail_allocator_static={257:0}, s_tolower_table={262:0}] [L6808] struct aws_string *str = bounded_malloc(sizeof(struct aws_string) + len + 1); [L261] return __VERIFIER_nondet_bool(); [L6811-L6812] EXPR nondet_bool() ? can_fail_allocator() : ((void *)0) VAL [s_can_fail_allocator_static={257:0}, s_tolower_table={262:0}] [L6811-L6812] *(struct aws_allocator **)(&str->allocator) = nondet_bool() ? can_fail_allocator() : ((void *)0) [L6814] *(size_t *)(&str->len) = len [L6815] *(uint8_t *)&str->bytes[len] = '\0' [L6816] return str; VAL [s_can_fail_allocator_static={257:0}, s_tolower_table={262:0}] [L6804] return ensure_string_is_allocated(len); [L8912-L8913] EXPR nondet_bool() ? ensure_string_is_allocated_bounded_length(16) : ((void *)0) VAL [s_can_fail_allocator_static={257:0}, s_tolower_table={262:0}] [L8912-L8914] struct aws_string *str = nondet_bool() ? ensure_string_is_allocated_bounded_length(16) : ((void *)0) ; [L261] return __VERIFIER_nondet_bool(); [L8915-L8916] EXPR nondet_bool() ? ensure_c_str_is_allocated(16) : ((void *)0) [L266] return __VERIFIER_nondet_ulong(); [L6820] size_t cap = nondet_uint64_t(); [L211] COND FALSE !(!cond) VAL [s_can_fail_allocator_static={257:0}, s_tolower_table={262:0}] [L211] COND FALSE !(!cond) VAL [s_can_fail_allocator_static={257:0}, s_tolower_table={262:0}] [L6887] return malloc(size); VAL [s_can_fail_allocator_static={257:0}, s_tolower_table={262:0}] [L6822] const char *str = bounded_malloc(cap); [L6826] str[cap - 1] [L211] COND FALSE !(!cond) VAL [s_can_fail_allocator_static={257:0}, s_tolower_table={262:0}] [L6827] return str; VAL [s_can_fail_allocator_static={257:0}, s_tolower_table={262:0}] [L8915-L8916] EXPR nondet_bool() ? ensure_c_str_is_allocated(16) : ((void *)0) VAL [s_can_fail_allocator_static={257:0}, s_tolower_table={262:0}] [L8915-L8917] const char *c_str = nondet_bool() ? ensure_c_str_is_allocated(16) : ((void *)0) ; [L7579] !str || aws_string_is_valid(str) [L6257] EXPR str && ((((str->len + 1)) == 0) || ((&str->bytes[0]))) [L6257] EXPR str->len [L6257] EXPR str && ((((str->len + 1)) == 0) || ((&str->bytes[0]))) VAL [s_can_fail_allocator_static={257:0}, s_tolower_table={262:0}] [L6257] EXPR str && ((((str->len + 1)) == 0) || ((&str->bytes[0]))) && str->bytes[str->len] == 0 [L6257] EXPR str->len [L6257] EXPR str->bytes[str->len] [L6257] EXPR str && ((((str->len + 1)) == 0) || ((&str->bytes[0]))) && str->bytes[str->len] == 0 VAL [s_can_fail_allocator_static={257:0}, s_tolower_table={262:0}] [L6257] return str && ((((str->len + 1)) == 0) || ((&str->bytes[0]))) && str->bytes[str->len] == 0; [L7579] !str || aws_string_is_valid(str) VAL [s_can_fail_allocator_static={257:0}, s_tolower_table={262:0}] [L211] COND FALSE !(!cond) VAL [s_can_fail_allocator_static={257:0}, s_tolower_table={262:0}] [L7580-L7583] COND FALSE !(str == ((void *)0) && c_str == ((void *)0)) VAL [s_can_fail_allocator_static={257:0}, s_tolower_table={262:0}] [L7589-L7592] COND FALSE !(str == ((void *)0) || c_str == ((void *)0)) [L7598] EXPR str->len [L211] COND FALSE !(!cond) VAL [s_can_fail_allocator_static={257:0}, s_tolower_table={262:0}] [L211] COND FALSE !(!cond) VAL [s_can_fail_allocator_static={257:0}, s_tolower_table={262:0}] [L8092] const uint8_t *array_bytes = array; [L8093] const uint8_t *str_bytes = (const uint8_t *)c_str; [L8095] size_t i = 0; VAL [s_can_fail_allocator_static={257:0}, s_tolower_table={262:0}] [L8095] COND FALSE !(i < array_len) VAL [s_can_fail_allocator_static={257:0}, s_tolower_table={262:0}] [L8110] EXPR str_bytes[array_len] [L8110] return str_bytes[array_len] == '\0'; [L7598] return aws_array_eq_c_str(str->bytes, str->len, c_str); [L8918] COND TRUE aws_string_eq_c_str(str, c_str) && str && c_str [L6257] EXPR str && ((((str->len + 1)) == 0) || ((&str->bytes[0]))) [L6257] EXPR str->len [L6257] EXPR str && ((((str->len + 1)) == 0) || ((&str->bytes[0]))) VAL [s_can_fail_allocator_static={257:0}, s_tolower_table={262:0}] [L6257] EXPR str && ((((str->len + 1)) == 0) || ((&str->bytes[0]))) && str->bytes[str->len] == 0 [L6257] EXPR str->len [L6257] EXPR str->bytes[str->len] [L6257] EXPR str && ((((str->len + 1)) == 0) || ((&str->bytes[0]))) && str->bytes[str->len] == 0 VAL [s_can_fail_allocator_static={257:0}, s_tolower_table={262:0}] [L6257] return str && ((((str->len + 1)) == 0) || ((&str->bytes[0]))) && str->bytes[str->len] == 0; [L223] COND FALSE !(!cond) VAL [s_can_fail_allocator_static={257:0}, s_tolower_table={262:0}] [L6272] return str && ((((1)) == 0) || ((str))); VAL [s_can_fail_allocator_static={257:0}, s_tolower_table={262:0}] [L223] COND FALSE !(!cond) VAL [s_can_fail_allocator_static={257:0}, s_tolower_table={262:0}] [L8921] str->len [L223] COND TRUE !cond VAL [s_can_fail_allocator_static={257:0}, s_tolower_table={262:0}] [L223] reach_error() VAL [s_can_fail_allocator_static={257:0}, s_tolower_table={262:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 86 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 20.8s, OverallIterations: 12, TraceHistogramMax: 1, AutomataDifference: 7.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 814 SDtfs, 3963 SDslu, 2513 SDs, 0 SdLazy, 884 SolverSat, 203 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 255 GetRequests, 71 SyntacticMatches, 2 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 638 ImplicationChecksByTransitivity, 10.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=91occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 65 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 3.0s SatisfiabilityAnalysisTime, 8.6s InterpolantComputationTime, 596 NumberOfCodeBlocks, 596 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 524 ConstructedInterpolants, 0 QuantifiedInterpolants, 327768 SizeOfPredicates, 42 NumberOfNonLiveVariables, 870 ConjunctsInSsa, 86 ConjunctsInUnsatCore, 12 InterpolantComputations, 11 PerfectInterpolantSequences, 1/2 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...