./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_ignore_case_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_ignore_case_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 448a89b655935d993b192d73af26c9e5a3a7ef62 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 19:24:16,823 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-04 19:24:16,827 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-04 19:24:16,876 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-04 19:24:16,877 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-04 19:24:16,885 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-04 19:24:16,890 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-04 19:24:16,900 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-04 19:24:16,904 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-04 19:24:16,914 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-04 19:24:16,917 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-04 19:24:16,923 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-04 19:24:16,924 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-04 19:24:16,927 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-04 19:24:16,932 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-04 19:24:16,935 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-04 19:24:16,936 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-04 19:24:16,942 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-04 19:24:16,947 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-04 19:24:16,953 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-04 19:24:16,959 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-04 19:24:16,962 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-04 19:24:16,965 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-04 19:24:16,969 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-04 19:24:16,976 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-04 19:24:16,977 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-04 19:24:16,977 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-04 19:24:16,980 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-04 19:24:16,981 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-04 19:24:16,982 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-04 19:24:16,983 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-04 19:24:16,985 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-04 19:24:16,989 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-04 19:24:16,990 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-04 19:24:16,992 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-04 19:24:16,992 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-04 19:24:16,993 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-04 19:24:16,993 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-04 19:24:16,994 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-04 19:24:16,997 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-04 19:24:16,998 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-04 19:24:17,000 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-04 19:24:17,065 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-04 19:24:17,066 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-04 19:24:17,072 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-04 19:24:17,073 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-04 19:24:17,073 INFO L138 SettingsManager]: * Use SBE=true [2020-12-04 19:24:17,074 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-04 19:24:17,074 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-04 19:24:17,074 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-04 19:24:17,074 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-04 19:24:17,075 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-04 19:24:17,076 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-04 19:24:17,077 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-04 19:24:17,077 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-04 19:24:17,077 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-04 19:24:17,078 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-04 19:24:17,078 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-04 19:24:17,078 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-04 19:24:17,079 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-04 19:24:17,079 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-04 19:24:17,079 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-04 19:24:17,080 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-04 19:24:17,080 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-04 19:24:17,080 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-04 19:24:17,080 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-04 19:24:17,081 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-04 19:24:17,081 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 448a89b655935d993b192d73af26c9e5a3a7ef62 [2020-12-04 19:24:17,563 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-04 19:24:17,626 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-04 19:24:17,630 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-04 19:24:17,633 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-04 19:24:17,634 INFO L275 PluginConnector]: CDTParser initialized [2020-12-04 19:24:17,637 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_string_eq_c_str_ignore_case_harness.i [2020-12-04 19:24:17,767 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fde7ad461/dbf0cd7107084496935fe3ac541bfc49/FLAGe4f35ff4f [2020-12-04 19:24:18,972 INFO L306 CDTParser]: Found 1 translation units. [2020-12-04 19:24:18,974 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_string_eq_c_str_ignore_case_harness.i [2020-12-04 19:24:19,032 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fde7ad461/dbf0cd7107084496935fe3ac541bfc49/FLAGe4f35ff4f [2020-12-04 19:24:19,304 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fde7ad461/dbf0cd7107084496935fe3ac541bfc49 [2020-12-04 19:24:19,308 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-04 19:24:19,312 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-04 19:24:19,314 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-04 19:24:19,314 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-04 19:24:19,320 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-04 19:24:19,321 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.12 07:24:19" (1/1) ... [2020-12-04 19:24:19,327 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@407dc9ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.12 07:24:19, skipping insertion in model container [2020-12-04 19:24:19,328 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.12 07:24:19" (1/1) ... [2020-12-04 19:24:19,338 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-04 19:24:19,494 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-04 19:24:19,877 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_ignore_case_harness.i[4505,4518] [2020-12-04 19:24:19,893 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_ignore_case_harness.i[4565,4578] [2020-12-04 19:24:19,928 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2020-12-04 19:24:19,936 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2020-12-04 19:24:21,287 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-04 19:24:21,288 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-04 19:24:21,290 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-04 19:24:21,292 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-04 19:24:21,297 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-04 19:24:21,321 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-04 19:24:21,322 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-04 19:24:21,326 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-04 19:24:21,327 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-04 19:24:22,174 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2020-12-04 19:24:22,176 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2020-12-04 19:24:22,178 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2020-12-04 19:24:22,180 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2020-12-04 19:24:22,182 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2020-12-04 19:24:22,184 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2020-12-04 19:24:22,185 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2020-12-04 19:24:22,186 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2020-12-04 19:24:22,187 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2020-12-04 19:24:22,188 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2020-12-04 19:24:22,542 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2020-12-04 19:24:22,799 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-04 19:24:22,800 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-04 19:24:22,830 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-04 19:24:22,892 INFO L203 MainTranslator]: Completed pre-run [2020-12-04 19:24:22,911 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_ignore_case_harness.i[4505,4518] [2020-12-04 19:24:22,912 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_ignore_case_harness.i[4565,4578] [2020-12-04 19:24:22,915 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2020-12-04 19:24:22,916 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2020-12-04 19:24:22,983 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-04 19:24:22,984 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-04 19:24:22,985 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-04 19:24:22,986 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-04 19:24:22,988 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-04 19:24:23,008 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-04 19:24:23,010 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-04 19:24:23,015 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-04 19:24:23,019 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-04 19:24:23,083 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2020-12-04 19:24:23,085 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2020-12-04 19:24:23,086 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2020-12-04 19:24:23,087 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2020-12-04 19:24:23,088 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2020-12-04 19:24:23,089 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2020-12-04 19:24:23,089 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2020-12-04 19:24:23,090 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2020-12-04 19:24:23,090 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2020-12-04 19:24:23,091 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2020-12-04 19:24:23,187 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2020-12-04 19:24:23,397 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-04 19:24:23,398 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-04 19:24:23,440 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-04 19:24:25,072 INFO L208 MainTranslator]: Completed translation [2020-12-04 19:24:25,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.12 07:24:25 WrapperNode [2020-12-04 19:24:25,077 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-04 19:24:25,082 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-04 19:24:25,082 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-04 19:24:25,082 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-04 19:24:25,091 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.12 07:24:25" (1/1) ... [2020-12-04 19:24:25,238 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.12 07:24:25" (1/1) ... [2020-12-04 19:24:25,376 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-04 19:24:25,378 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-04 19:24:25,378 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-04 19:24:25,379 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-04 19:24:25,391 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.12 07:24:25" (1/1) ... [2020-12-04 19:24:25,392 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.12 07:24:25" (1/1) ... [2020-12-04 19:24:25,407 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.12 07:24:25" (1/1) ... [2020-12-04 19:24:25,408 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.12 07:24:25" (1/1) ... [2020-12-04 19:24:25,469 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.12 07:24:25" (1/1) ... [2020-12-04 19:24:25,479 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.12 07:24:25" (1/1) ... [2020-12-04 19:24:25,492 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.12 07:24:25" (1/1) ... [2020-12-04 19:24:25,509 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-04 19:24:25,513 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-04 19:24:25,515 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-04 19:24:25,515 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-04 19:24:25,516 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.12 07:24:25" (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 19:24:25,634 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-04 19:24:25,635 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-04 19:24:25,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-04 19:24:25,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-04 19:24:25,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-04 19:24:25,635 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-04 19:24:25,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-04 19:24:25,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-04 19:24:25,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-04 19:24:26,706 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-04 19:24:26,706 INFO L299 CfgBuilder]: Removed 61 assume(true) statements. [2020-12-04 19:24:26,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.12 07:24:26 BoogieIcfgContainer [2020-12-04 19:24:26,708 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-04 19:24:26,711 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-04 19:24:26,711 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-04 19:24:26,715 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-04 19:24:26,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.12 07:24:19" (1/3) ... [2020-12-04 19:24:26,717 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77144d7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.12 07:24:26, skipping insertion in model container [2020-12-04 19:24:26,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.12 07:24:25" (2/3) ... [2020-12-04 19:24:26,718 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77144d7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.12 07:24:26, skipping insertion in model container [2020-12-04 19:24:26,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.12 07:24:26" (3/3) ... [2020-12-04 19:24:26,720 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_string_eq_c_str_ignore_case_harness.i [2020-12-04 19:24:26,739 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-04 19:24:26,748 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-12-04 19:24:26,762 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-12-04 19:24:26,794 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-04 19:24:26,794 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-04 19:24:26,794 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-04 19:24:26,795 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-04 19:24:26,795 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-04 19:24:26,795 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-04 19:24:26,795 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-04 19:24:26,795 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-04 19:24:26,815 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-12-04 19:24:26,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-04 19:24:26,823 INFO L414 BasicCegarLoop]: Found error trace [2020-12-04 19:24:26,824 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 19:24:26,825 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-04 19:24:26,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-04 19:24:26,834 INFO L82 PathProgramCache]: Analyzing trace with hash -1267490943, now seen corresponding path program 1 times [2020-12-04 19:24:26,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-04 19:24:26,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512161580] [2020-12-04 19:24:26,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-04 19:24:27,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-04 19:24:27,378 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 19:24:27,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512161580] [2020-12-04 19:24:27,380 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-04 19:24:27,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-04 19:24:27,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946422477] [2020-12-04 19:24:27,386 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-04 19:24:27,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-04 19:24:27,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-04 19:24:27,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-04 19:24:27,406 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 2 states. [2020-12-04 19:24:27,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-04 19:24:27,438 INFO L93 Difference]: Finished difference Result 142 states and 190 transitions. [2020-12-04 19:24:27,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-04 19:24:27,440 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2020-12-04 19:24:27,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-04 19:24:27,453 INFO L225 Difference]: With dead ends: 142 [2020-12-04 19:24:27,453 INFO L226 Difference]: Without dead ends: 69 [2020-12-04 19:24:27,458 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 19:24:27,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-12-04 19:24:27,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-12-04 19:24:27,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-12-04 19:24:27,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 81 transitions. [2020-12-04 19:24:27,521 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 81 transitions. Word has length 22 [2020-12-04 19:24:27,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-04 19:24:27,522 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 81 transitions. [2020-12-04 19:24:27,522 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-04 19:24:27,523 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 81 transitions. [2020-12-04 19:24:27,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-04 19:24:27,525 INFO L414 BasicCegarLoop]: Found error trace [2020-12-04 19:24:27,525 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 19:24:27,525 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-04 19:24:27,526 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-04 19:24:27,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-04 19:24:27,532 INFO L82 PathProgramCache]: Analyzing trace with hash -1009325505, now seen corresponding path program 1 times [2020-12-04 19:24:27,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-04 19:24:27,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551907908] [2020-12-04 19:24:27,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-04 19:24:27,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-04 19:24:27,852 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 19:24:27,853 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551907908] [2020-12-04 19:24:27,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-04 19:24:27,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-04 19:24:27,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933538056] [2020-12-04 19:24:27,858 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-04 19:24:27,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-04 19:24:27,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-04 19:24:27,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-04 19:24:27,866 INFO L87 Difference]: Start difference. First operand 69 states and 81 transitions. Second operand 4 states. [2020-12-04 19:24:27,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-04 19:24:27,940 INFO L93 Difference]: Finished difference Result 122 states and 144 transitions. [2020-12-04 19:24:27,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-04 19:24:27,941 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-12-04 19:24:27,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-04 19:24:27,945 INFO L225 Difference]: With dead ends: 122 [2020-12-04 19:24:27,945 INFO L226 Difference]: Without dead ends: 69 [2020-12-04 19:24:27,948 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 19:24:27,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-12-04 19:24:27,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-12-04 19:24:27,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-12-04 19:24:27,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 80 transitions. [2020-12-04 19:24:27,967 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 80 transitions. Word has length 22 [2020-12-04 19:24:27,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-04 19:24:27,967 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 80 transitions. [2020-12-04 19:24:27,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-04 19:24:27,967 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 80 transitions. [2020-12-04 19:24:27,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-04 19:24:27,970 INFO L414 BasicCegarLoop]: Found error trace [2020-12-04 19:24:27,970 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 19:24:27,970 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-04 19:24:27,970 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-04 19:24:27,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-04 19:24:27,974 INFO L82 PathProgramCache]: Analyzing trace with hash 2090456739, now seen corresponding path program 1 times [2020-12-04 19:24:27,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-04 19:24:27,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936210930] [2020-12-04 19:24:27,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-04 19:24:28,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-04 19:24:28,273 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 19:24:28,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936210930] [2020-12-04 19:24:28,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-04 19:24:28,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-04 19:24:28,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402153046] [2020-12-04 19:24:28,276 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-04 19:24:28,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-04 19:24:28,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-04 19:24:28,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-12-04 19:24:28,293 INFO L87 Difference]: Start difference. First operand 69 states and 80 transitions. Second operand 9 states. [2020-12-04 19:24:28,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-04 19:24:28,518 INFO L93 Difference]: Finished difference Result 88 states and 100 transitions. [2020-12-04 19:24:28,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-04 19:24:28,519 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 33 [2020-12-04 19:24:28,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-04 19:24:28,520 INFO L225 Difference]: With dead ends: 88 [2020-12-04 19:24:28,520 INFO L226 Difference]: Without dead ends: 69 [2020-12-04 19:24:28,521 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 19:24:28,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-12-04 19:24:28,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-12-04 19:24:28,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-12-04 19:24:28,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 79 transitions. [2020-12-04 19:24:28,532 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 79 transitions. Word has length 33 [2020-12-04 19:24:28,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-04 19:24:28,532 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 79 transitions. [2020-12-04 19:24:28,532 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-04 19:24:28,533 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 79 transitions. [2020-12-04 19:24:28,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-04 19:24:28,534 INFO L414 BasicCegarLoop]: Found error trace [2020-12-04 19:24:28,534 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 19:24:28,535 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-04 19:24:28,535 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-04 19:24:28,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-04 19:24:28,536 INFO L82 PathProgramCache]: Analyzing trace with hash 1931203523, now seen corresponding path program 1 times [2020-12-04 19:24:28,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-04 19:24:28,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279688057] [2020-12-04 19:24:28,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-04 19:24:28,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-04 19:24:28,668 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 19:24:28,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279688057] [2020-12-04 19:24:28,670 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-04 19:24:28,670 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-04 19:24:28,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228541740] [2020-12-04 19:24:28,671 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-04 19:24:28,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-04 19:24:28,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-04 19:24:28,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-04 19:24:28,672 INFO L87 Difference]: Start difference. First operand 69 states and 79 transitions. Second operand 4 states. [2020-12-04 19:24:28,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-04 19:24:28,698 INFO L93 Difference]: Finished difference Result 110 states and 128 transitions. [2020-12-04 19:24:28,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-04 19:24:28,699 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-12-04 19:24:28,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-04 19:24:28,701 INFO L225 Difference]: With dead ends: 110 [2020-12-04 19:24:28,701 INFO L226 Difference]: Without dead ends: 69 [2020-12-04 19:24:28,702 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 19:24:28,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-12-04 19:24:28,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-12-04 19:24:28,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-12-04 19:24:28,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 78 transitions. [2020-12-04 19:24:28,716 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 78 transitions. Word has length 34 [2020-12-04 19:24:28,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-04 19:24:28,718 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 78 transitions. [2020-12-04 19:24:28,718 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-04 19:24:28,719 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 78 transitions. [2020-12-04 19:24:28,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-12-04 19:24:28,720 INFO L414 BasicCegarLoop]: Found error trace [2020-12-04 19:24:28,720 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 19:24:28,720 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-04 19:24:28,721 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-04 19:24:28,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-04 19:24:28,721 INFO L82 PathProgramCache]: Analyzing trace with hash 268760160, now seen corresponding path program 1 times [2020-12-04 19:24:28,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-04 19:24:28,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849553998] [2020-12-04 19:24:28,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-04 19:24:28,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-04 19:24:28,915 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 19:24:28,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849553998] [2020-12-04 19:24:28,916 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-04 19:24:28,916 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-04 19:24:28,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979071506] [2020-12-04 19:24:28,917 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-04 19:24:28,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-04 19:24:28,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-04 19:24:28,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-12-04 19:24:28,919 INFO L87 Difference]: Start difference. First operand 69 states and 78 transitions. Second operand 9 states. [2020-12-04 19:24:29,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-04 19:24:29,146 INFO L93 Difference]: Finished difference Result 103 states and 117 transitions. [2020-12-04 19:24:29,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-04 19:24:29,146 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 43 [2020-12-04 19:24:29,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-04 19:24:29,147 INFO L225 Difference]: With dead ends: 103 [2020-12-04 19:24:29,148 INFO L226 Difference]: Without dead ends: 69 [2020-12-04 19:24:29,149 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 19:24:29,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-12-04 19:24:29,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-12-04 19:24:29,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-12-04 19:24:29,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 77 transitions. [2020-12-04 19:24:29,157 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 77 transitions. Word has length 43 [2020-12-04 19:24:29,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-04 19:24:29,157 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 77 transitions. [2020-12-04 19:24:29,157 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-04 19:24:29,157 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 77 transitions. [2020-12-04 19:24:29,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-12-04 19:24:29,159 INFO L414 BasicCegarLoop]: Found error trace [2020-12-04 19:24:29,159 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 19:24:29,159 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-04 19:24:29,160 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-04 19:24:29,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-04 19:24:29,160 INFO L82 PathProgramCache]: Analyzing trace with hash -1742888769, now seen corresponding path program 1 times [2020-12-04 19:24:29,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-04 19:24:29,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811312329] [2020-12-04 19:24:29,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-04 19:24:29,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-04 19:24:29,471 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 19:24:29,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811312329] [2020-12-04 19:24:29,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-04 19:24:29,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-12-04 19:24:29,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749005141] [2020-12-04 19:24:29,473 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-04 19:24:29,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-04 19:24:29,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-04 19:24:29,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-12-04 19:24:29,474 INFO L87 Difference]: Start difference. First operand 69 states and 77 transitions. Second operand 12 states. [2020-12-04 19:24:29,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-04 19:24:29,880 INFO L93 Difference]: Finished difference Result 107 states and 121 transitions. [2020-12-04 19:24:29,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-04 19:24:29,881 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 48 [2020-12-04 19:24:29,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-04 19:24:29,884 INFO L225 Difference]: With dead ends: 107 [2020-12-04 19:24:29,885 INFO L226 Difference]: Without dead ends: 69 [2020-12-04 19:24:29,890 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2020-12-04 19:24:29,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-12-04 19:24:29,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-12-04 19:24:29,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-12-04 19:24:29,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2020-12-04 19:24:29,906 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 48 [2020-12-04 19:24:29,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-04 19:24:29,907 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2020-12-04 19:24:29,910 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-04 19:24:29,910 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2020-12-04 19:24:29,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-12-04 19:24:29,912 INFO L414 BasicCegarLoop]: Found error trace [2020-12-04 19:24:29,912 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 19:24:29,915 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-04 19:24:29,915 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-04 19:24:29,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-04 19:24:29,916 INFO L82 PathProgramCache]: Analyzing trace with hash -156387909, now seen corresponding path program 1 times [2020-12-04 19:24:29,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-04 19:24:29,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954666828] [2020-12-04 19:24:29,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-04 19:24:29,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-04 19:24:30,243 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 19:24:30,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954666828] [2020-12-04 19:24:30,243 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-04 19:24:30,244 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-12-04 19:24:30,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360334603] [2020-12-04 19:24:30,244 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-04 19:24:30,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-04 19:24:30,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-04 19:24:30,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-12-04 19:24:30,245 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand 14 states. [2020-12-04 19:24:30,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-04 19:24:30,596 INFO L93 Difference]: Finished difference Result 88 states and 91 transitions. [2020-12-04 19:24:30,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-04 19:24:30,597 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 48 [2020-12-04 19:24:30,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-04 19:24:30,598 INFO L225 Difference]: With dead ends: 88 [2020-12-04 19:24:30,598 INFO L226 Difference]: Without dead ends: 69 [2020-12-04 19:24:30,599 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=178, Invalid=472, Unknown=0, NotChecked=0, Total=650 [2020-12-04 19:24:30,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-12-04 19:24:30,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-12-04 19:24:30,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-12-04 19:24:30,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 72 transitions. [2020-12-04 19:24:30,622 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 72 transitions. Word has length 48 [2020-12-04 19:24:30,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-04 19:24:30,622 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 72 transitions. [2020-12-04 19:24:30,622 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-04 19:24:30,622 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 72 transitions. [2020-12-04 19:24:30,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-04 19:24:30,623 INFO L414 BasicCegarLoop]: Found error trace [2020-12-04 19:24:30,624 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 19:24:30,624 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-04 19:24:30,624 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-04 19:24:30,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-04 19:24:30,624 INFO L82 PathProgramCache]: Analyzing trace with hash -168490957, now seen corresponding path program 1 times [2020-12-04 19:24:30,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-04 19:24:30,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331932023] [2020-12-04 19:24:30,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-04 19:24:31,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-04 19:24:32,899 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 19:24:32,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331932023] [2020-12-04 19:24:32,900 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-04 19:24:32,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2020-12-04 19:24:32,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146597106] [2020-12-04 19:24:32,902 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-12-04 19:24:32,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-04 19:24:32,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-12-04 19:24:32,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=439, Unknown=0, NotChecked=0, Total=506 [2020-12-04 19:24:32,904 INFO L87 Difference]: Start difference. First operand 69 states and 72 transitions. Second operand 23 states. [2020-12-04 19:24:33,633 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2020-12-04 19:24:34,644 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 48 [2020-12-04 19:24:34,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-04 19:24:34,706 INFO L93 Difference]: Finished difference Result 114 states and 118 transitions. [2020-12-04 19:24:34,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-12-04 19:24:34,707 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 55 [2020-12-04 19:24:34,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-04 19:24:34,708 INFO L225 Difference]: With dead ends: 114 [2020-12-04 19:24:34,708 INFO L226 Difference]: Without dead ends: 112 [2020-12-04 19:24:34,711 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=411, Invalid=1229, Unknown=0, NotChecked=0, Total=1640 [2020-12-04 19:24:34,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-12-04 19:24:34,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 80. [2020-12-04 19:24:34,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-12-04 19:24:34,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 84 transitions. [2020-12-04 19:24:34,736 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 84 transitions. Word has length 55 [2020-12-04 19:24:34,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-04 19:24:34,737 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 84 transitions. [2020-12-04 19:24:34,737 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-12-04 19:24:34,737 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 84 transitions. [2020-12-04 19:24:34,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-04 19:24:34,741 INFO L414 BasicCegarLoop]: Found error trace [2020-12-04 19:24:34,741 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 19:24:34,741 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-04 19:24:34,741 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-04 19:24:34,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-04 19:24:34,745 INFO L82 PathProgramCache]: Analyzing trace with hash 1975205668, now seen corresponding path program 1 times [2020-12-04 19:24:34,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-04 19:24:34,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126537812] [2020-12-04 19:24:34,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-04 19:24:34,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-04 19:24:34,862 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 19:24:34,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126537812] [2020-12-04 19:24:34,863 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-04 19:24:34,863 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-04 19:24:34,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714210220] [2020-12-04 19:24:34,864 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-04 19:24:34,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-04 19:24:34,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-04 19:24:34,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-04 19:24:34,865 INFO L87 Difference]: Start difference. First operand 80 states and 84 transitions. Second operand 5 states. [2020-12-04 19:24:34,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-04 19:24:34,899 INFO L93 Difference]: Finished difference Result 100 states and 103 transitions. [2020-12-04 19:24:34,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-04 19:24:34,899 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 55 [2020-12-04 19:24:34,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-04 19:24:34,900 INFO L225 Difference]: With dead ends: 100 [2020-12-04 19:24:34,901 INFO L226 Difference]: Without dead ends: 80 [2020-12-04 19:24:34,901 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 19:24:34,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-12-04 19:24:34,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-12-04 19:24:34,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-12-04 19:24:34,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 82 transitions. [2020-12-04 19:24:34,911 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 82 transitions. Word has length 55 [2020-12-04 19:24:34,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-04 19:24:34,912 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 82 transitions. [2020-12-04 19:24:34,912 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-04 19:24:34,912 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 82 transitions. [2020-12-04 19:24:34,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-12-04 19:24:34,913 INFO L414 BasicCegarLoop]: Found error trace [2020-12-04 19:24:34,913 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 19:24:34,913 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-04 19:24:34,914 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-04 19:24:34,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-04 19:24:34,914 INFO L82 PathProgramCache]: Analyzing trace with hash 1306702829, now seen corresponding path program 1 times [2020-12-04 19:24:34,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-04 19:24:34,915 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558131536] [2020-12-04 19:24:34,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-04 19:24:34,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-04 19:24:35,135 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 19:24:35,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558131536] [2020-12-04 19:24:35,136 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-04 19:24:35,136 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-04 19:24:35,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891573829] [2020-12-04 19:24:35,136 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-04 19:24:35,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-04 19:24:35,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-04 19:24:35,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-12-04 19:24:35,138 INFO L87 Difference]: Start difference. First operand 80 states and 82 transitions. Second operand 10 states. [2020-12-04 19:24:35,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-04 19:24:35,296 INFO L93 Difference]: Finished difference Result 80 states and 82 transitions. [2020-12-04 19:24:35,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-04 19:24:35,297 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 58 [2020-12-04 19:24:35,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-04 19:24:35,299 INFO L225 Difference]: With dead ends: 80 [2020-12-04 19:24:35,299 INFO L226 Difference]: Without dead ends: 78 [2020-12-04 19:24:35,299 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2020-12-04 19:24:35,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-12-04 19:24:35,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-12-04 19:24:35,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-12-04 19:24:35,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 80 transitions. [2020-12-04 19:24:35,317 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 80 transitions. Word has length 58 [2020-12-04 19:24:35,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-04 19:24:35,317 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 80 transitions. [2020-12-04 19:24:35,317 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-04 19:24:35,318 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 80 transitions. [2020-12-04 19:24:35,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-04 19:24:35,318 INFO L414 BasicCegarLoop]: Found error trace [2020-12-04 19:24:35,318 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 19:24:35,319 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-04 19:24:35,319 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-04 19:24:35,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-04 19:24:35,320 INFO L82 PathProgramCache]: Analyzing trace with hash -876092870, now seen corresponding path program 1 times [2020-12-04 19:24:35,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-04 19:24:35,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477766027] [2020-12-04 19:24:35,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-04 19:24:36,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-04 19:24:38,307 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 19:24:38,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477766027] [2020-12-04 19:24:38,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [128178827] [2020-12-04 19:24:38,308 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 19:24:38,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-04 19:24:38,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 874 conjuncts, 100 conjunts are in the unsatisfiable core [2020-12-04 19:24:38,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-04 19:24:38,887 INFO L348 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2020-12-04 19:24:38,891 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 19:24:38,892 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-04 19:24:38,906 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-04 19:24:38,908 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 19:24:38,909 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:22, output treesize:19 [2020-12-04 19:24:39,390 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-04 19:24:39,515 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 19:24:39,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-04 19:24:39,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [20] total 32 [2020-12-04 19:24:39,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877464378] [2020-12-04 19:24:39,517 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-04 19:24:39,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-04 19:24:39,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-04 19:24:39,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=902, Unknown=0, NotChecked=0, Total=992 [2020-12-04 19:24:39,519 INFO L87 Difference]: Start difference. First operand 78 states and 80 transitions. Second operand 15 states. [2020-12-04 19:24:40,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-04 19:24:40,719 INFO L93 Difference]: Finished difference Result 78 states and 80 transitions. [2020-12-04 19:24:40,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-04 19:24:40,720 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 59 [2020-12-04 19:24:40,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-04 19:24:40,720 INFO L225 Difference]: With dead ends: 78 [2020-12-04 19:24:40,721 INFO L226 Difference]: Without dead ends: 76 [2020-12-04 19:24:40,722 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 47 SyntacticMatches, 4 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 498 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=246, Invalid=1824, Unknown=0, NotChecked=0, Total=2070 [2020-12-04 19:24:40,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-12-04 19:24:40,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 65. [2020-12-04 19:24:40,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-12-04 19:24:40,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 66 transitions. [2020-12-04 19:24:40,729 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 66 transitions. Word has length 59 [2020-12-04 19:24:40,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-04 19:24:40,730 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 66 transitions. [2020-12-04 19:24:40,730 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-04 19:24:40,730 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 66 transitions. [2020-12-04 19:24:40,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-04 19:24:40,730 INFO L414 BasicCegarLoop]: Found error trace [2020-12-04 19:24:40,730 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 19:24:40,946 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-12-04 19:24:40,947 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-04 19:24:40,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-04 19:24:40,948 INFO L82 PathProgramCache]: Analyzing trace with hash 1611098735, now seen corresponding path program 1 times [2020-12-04 19:24:40,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-04 19:24:40,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973330364] [2020-12-04 19:24:40,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-04 19:24:41,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-04 19:24:41,281 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-04 19:24:41,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-04 19:24:41,650 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-04 19:24:41,730 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-04 19:24:41,730 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-04 19:24:41,731 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-04 19:24:41,847 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.12 07:24:41 BoogieIcfgContainer [2020-12-04 19:24:41,847 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-04 19:24:41,848 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-04 19:24:41,848 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-04 19:24:41,848 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-04 19:24:41,849 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.12 07:24:26" (3/4) ... [2020-12-04 19:24:41,851 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-04 19:24:41,967 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-12-04 19:24:41,968 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-04 19:24:41,969 INFO L168 Benchmark]: Toolchain (without parser) took 22658.11 ms. Allocated memory was 48.2 MB in the beginning and 314.6 MB in the end (delta: 266.3 MB). Free memory was 26.3 MB in the beginning and 270.0 MB in the end (delta: -243.7 MB). Peak memory consumption was 204.3 MB. Max. memory is 16.1 GB. [2020-12-04 19:24:41,970 INFO L168 Benchmark]: CDTParser took 0.40 ms. Allocated memory is still 39.8 MB. Free memory was 17.9 MB in the beginning and 17.8 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-04 19:24:41,970 INFO L168 Benchmark]: CACSL2BoogieTranslator took 5764.15 ms. Allocated memory was 48.2 MB in the beginning and 92.3 MB in the end (delta: 44.0 MB). Free memory was 26.0 MB in the beginning and 38.1 MB in the end (delta: -12.1 MB). Peak memory consumption was 60.0 MB. Max. memory is 16.1 GB. [2020-12-04 19:24:41,971 INFO L168 Benchmark]: Boogie Procedure Inliner took 294.99 ms. Allocated memory is still 92.3 MB. Free memory was 38.1 MB in the beginning and 29.1 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-04 19:24:41,971 INFO L168 Benchmark]: Boogie Preprocessor took 134.52 ms. Allocated memory is still 92.3 MB. Free memory was 29.1 MB in the beginning and 24.8 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-04 19:24:41,974 INFO L168 Benchmark]: RCFGBuilder took 1195.49 ms. Allocated memory was 92.3 MB in the beginning and 115.3 MB in the end (delta: 23.1 MB). Free memory was 24.8 MB in the beginning and 44.5 MB in the end (delta: -19.7 MB). Peak memory consumption was 14.2 MB. Max. memory is 16.1 GB. [2020-12-04 19:24:41,975 INFO L168 Benchmark]: TraceAbstraction took 15136.31 ms. Allocated memory was 115.3 MB in the beginning and 314.6 MB in the end (delta: 199.2 MB). Free memory was 43.7 MB in the beginning and 99.5 MB in the end (delta: -55.7 MB). Peak memory consumption was 146.0 MB. Max. memory is 16.1 GB. [2020-12-04 19:24:41,976 INFO L168 Benchmark]: Witness Printer took 119.92 ms. Allocated memory is still 314.6 MB. Free memory was 99.5 MB in the beginning and 270.0 MB in the end (delta: -170.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-04 19:24:41,981 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40 ms. Allocated memory is still 39.8 MB. Free memory was 17.9 MB in the beginning and 17.8 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 5764.15 ms. Allocated memory was 48.2 MB in the beginning and 92.3 MB in the end (delta: 44.0 MB). Free memory was 26.0 MB in the beginning and 38.1 MB in the end (delta: -12.1 MB). Peak memory consumption was 60.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 294.99 ms. Allocated memory is still 92.3 MB. Free memory was 38.1 MB in the beginning and 29.1 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 134.52 ms. Allocated memory is still 92.3 MB. Free memory was 29.1 MB in the beginning and 24.8 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1195.49 ms. Allocated memory was 92.3 MB in the beginning and 115.3 MB in the end (delta: 23.1 MB). Free memory was 24.8 MB in the beginning and 44.5 MB in the end (delta: -19.7 MB). Peak memory consumption was 14.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 15136.31 ms. Allocated memory was 115.3 MB in the beginning and 314.6 MB in the end (delta: 199.2 MB). Free memory was 43.7 MB in the beginning and 99.5 MB in the end (delta: -55.7 MB). Peak memory consumption was 146.0 MB. Max. memory is 16.1 GB. * Witness Printer took 119.92 ms. Allocated memory is still 314.6 MB. Free memory was 99.5 MB in the beginning and 270.0 MB in the end (delta: -170.5 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) ; [L7607] !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; [L7607] !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}] [L7608-L7611] COND FALSE !(str == ((void *)0) && c_str == ((void *)0)) VAL [s_can_fail_allocator_static={257:0}, s_tolower_table={262:0}] [L7617-L7620] COND FALSE !(str == ((void *)0) || c_str == ((void *)0)) [L7626] 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}] [L8056] const uint8_t *array_bytes = array; [L8057] const uint8_t *str_bytes = (const uint8_t *)c_str; [L8059] size_t i = 0; VAL [s_can_fail_allocator_static={257:0}, s_tolower_table={262:0}] [L8059] COND FALSE !(i < array_len) VAL [s_can_fail_allocator_static={257:0}, s_tolower_table={262:0}] [L8074] EXPR str_bytes[array_len] [L8074] return str_bytes[array_len] == '\0'; [L7626] return aws_array_eq_c_str_ignore_case(str->bytes, str->len, c_str); [L8918] COND TRUE aws_string_eq_c_str_ignore_case(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, 74 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 14.9s, OverallIterations: 12, TraceHistogramMax: 1, AutomataDifference: 4.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 700 SDtfs, 3131 SDslu, 2191 SDs, 0 SdLazy, 813 SolverSat, 208 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 252 GetRequests, 68 SyntacticMatches, 5 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 765 ImplicationChecksByTransitivity, 5.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=80occurred 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: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 43 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 2.9s SatisfiabilityAnalysisTime, 5.6s InterpolantComputationTime, 596 NumberOfCodeBlocks, 596 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 524 ConstructedInterpolants, 0 QuantifiedInterpolants, 305522 SizeOfPredicates, 49 NumberOfNonLiveVariables, 874 ConjunctsInSsa, 100 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...