./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_c_str_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 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 ../sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_c_str_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash f87ca444cebdd8343e0a486129ff23acad574c7cfb073abcacffd6c901ccf3af --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 03:16:56,341 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 03:16:56,342 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 03:16:56,411 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 03:16:56,412 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 03:16:56,415 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 03:16:56,416 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 03:16:56,421 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 03:16:56,424 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 03:16:56,428 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 03:16:56,429 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 03:16:56,430 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 03:16:56,431 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 03:16:56,433 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 03:16:56,435 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 03:16:56,438 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 03:16:56,439 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 03:16:56,440 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 03:16:56,443 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 03:16:56,447 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 03:16:56,449 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 03:16:56,450 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 03:16:56,452 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 03:16:56,453 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 03:16:56,459 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 03:16:56,459 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 03:16:56,460 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 03:16:56,461 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 03:16:56,462 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 03:16:56,463 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 03:16:56,463 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 03:16:56,464 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 03:16:56,465 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 03:16:56,467 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 03:16:56,468 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 03:16:56,469 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 03:16:56,469 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 03:16:56,470 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 03:16:56,470 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 03:16:56,471 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 03:16:56,471 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 03:16:56,473 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-16 03:16:56,510 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 03:16:56,512 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 03:16:56,512 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 03:16:56,512 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 03:16:56,513 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 03:16:56,513 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 03:16:56,514 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 03:16:56,514 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 03:16:56,514 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 03:16:56,515 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 03:16:56,515 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 03:16:56,516 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 03:16:56,516 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 03:16:56,516 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 03:16:56,516 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 03:16:56,516 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 03:16:56,517 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 03:16:56,517 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 03:16:56,517 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 03:16:56,517 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 03:16:56,517 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 03:16:56,518 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 03:16:56,518 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 03:16:56,518 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 03:16:56,518 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 03:16:56,518 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 03:16:56,518 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 03:16:56,519 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 03:16:56,519 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 03:16:56,519 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 03:16:56,519 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 03:16:56,519 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f87ca444cebdd8343e0a486129ff23acad574c7cfb073abcacffd6c901ccf3af [2021-12-16 03:16:56,742 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 03:16:56,765 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 03:16:56,767 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 03:16:56,768 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 03:16:56,769 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 03:16:56,770 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_c_str_harness.i [2021-12-16 03:16:56,827 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5153f72c/caba41d97c8f41ba914f35b2973afbe7/FLAG9b8af6950 [2021-12-16 03:16:57,533 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 03:16:57,533 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_c_str_harness.i [2021-12-16 03:16:57,575 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5153f72c/caba41d97c8f41ba914f35b2973afbe7/FLAG9b8af6950 [2021-12-16 03:16:57,848 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5153f72c/caba41d97c8f41ba914f35b2973afbe7 [2021-12-16 03:16:57,851 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 03:16:57,852 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 03:16:57,853 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 03:16:57,853 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 03:16:57,857 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 03:16:57,858 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:16:57" (1/1) ... [2021-12-16 03:16:57,859 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@503b7137 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:16:57, skipping insertion in model container [2021-12-16 03:16:57,859 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:16:57" (1/1) ... [2021-12-16 03:16:57,863 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 03:16:57,962 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 03:16:58,207 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_c_str_harness.i[4498,4511] [2021-12-16 03:16:58,214 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_c_str_harness.i[4558,4571] [2021-12-16 03:16:59,051 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:16:59,053 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:16:59,053 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:16:59,054 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:16:59,056 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:16:59,077 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:16:59,080 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:16:59,083 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:16:59,084 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:16:59,432 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-16 03:16:59,433 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-16 03:16:59,434 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-16 03:16:59,436 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-16 03:16:59,437 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-16 03:16:59,438 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-16 03:16:59,438 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-16 03:16:59,439 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-16 03:16:59,440 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-16 03:16:59,440 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-16 03:16:59,573 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-16 03:16:59,698 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:16:59,700 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:16:59,744 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 03:16:59,808 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 03:16:59,819 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_c_str_harness.i[4498,4511] [2021-12-16 03:16:59,819 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_c_str_harness.i[4558,4571] [2021-12-16 03:16:59,867 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:16:59,868 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:16:59,869 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:16:59,869 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:16:59,870 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:16:59,874 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:16:59,875 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:16:59,875 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:16:59,876 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:16:59,914 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-16 03:16:59,916 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-16 03:16:59,917 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-16 03:16:59,917 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-16 03:16:59,918 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-16 03:16:59,918 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-16 03:16:59,918 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-16 03:16:59,918 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-16 03:16:59,919 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-16 03:16:59,919 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-16 03:16:59,938 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-16 03:17:00,029 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:17:00,029 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:17:00,055 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 03:17:00,239 INFO L208 MainTranslator]: Completed translation [2021-12-16 03:17:00,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:17:00 WrapperNode [2021-12-16 03:17:00,240 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 03:17:00,241 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 03:17:00,242 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 03:17:00,242 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 03:17:00,248 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:17:00" (1/1) ... [2021-12-16 03:17:00,369 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:17:00" (1/1) ... [2021-12-16 03:17:00,467 INFO L137 Inliner]: procedures = 691, calls = 2629, calls flagged for inlining = 63, calls inlined = 9, statements flattened = 863 [2021-12-16 03:17:00,471 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 03:17:00,473 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 03:17:00,473 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 03:17:00,473 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 03:17:00,485 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:17:00" (1/1) ... [2021-12-16 03:17:00,485 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:17:00" (1/1) ... [2021-12-16 03:17:00,499 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:17:00" (1/1) ... [2021-12-16 03:17:00,500 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:17:00" (1/1) ... [2021-12-16 03:17:00,542 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:17:00" (1/1) ... [2021-12-16 03:17:00,556 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:17:00" (1/1) ... [2021-12-16 03:17:00,562 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:17:00" (1/1) ... [2021-12-16 03:17:00,578 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 03:17:00,584 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 03:17:00,584 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 03:17:00,584 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 03:17:00,585 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:17:00" (1/1) ... [2021-12-16 03:17:00,591 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 03:17:00,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:17:00,617 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-16 03:17:00,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-16 03:17:00,658 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq_c_str [2021-12-16 03:17:00,658 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq_c_str [2021-12-16 03:17:00,658 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2021-12-16 03:17:00,659 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2021-12-16 03:17:00,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-16 03:17:00,659 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-12-16 03:17:00,659 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-12-16 03:17:00,659 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-16 03:17:00,660 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-16 03:17:00,660 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-16 03:17:00,660 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-16 03:17:00,661 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 03:17:00,661 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2021-12-16 03:17:00,662 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2021-12-16 03:17:00,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-16 03:17:00,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 03:17:00,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 03:17:00,663 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-16 03:17:00,663 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-16 03:17:00,663 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2021-12-16 03:17:00,663 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2021-12-16 03:17:00,663 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-16 03:17:00,663 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-16 03:17:00,664 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-16 03:17:00,664 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-16 03:17:00,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-16 03:17:00,665 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-12-16 03:17:00,665 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-12-16 03:17:00,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-16 03:17:00,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 03:17:00,922 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 03:17:00,923 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 03:17:01,586 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 03:17:01,595 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 03:17:01,595 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-16 03:17:01,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:17:01 BoogieIcfgContainer [2021-12-16 03:17:01,598 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 03:17:01,600 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 03:17:01,601 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 03:17:01,603 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 03:17:01,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 03:16:57" (1/3) ... [2021-12-16 03:17:01,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@222efc14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:17:01, skipping insertion in model container [2021-12-16 03:17:01,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:17:00" (2/3) ... [2021-12-16 03:17:01,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@222efc14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:17:01, skipping insertion in model container [2021-12-16 03:17:01,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:17:01" (3/3) ... [2021-12-16 03:17:01,607 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_eq_c_str_harness.i [2021-12-16 03:17:01,611 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 03:17:01,611 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-16 03:17:01,658 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 03:17:01,673 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-16 03:17:01,674 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-16 03:17:01,697 INFO L276 IsEmpty]: Start isEmpty. Operand has 123 states, 81 states have (on average 1.2592592592592593) internal successors, (102), 83 states have internal predecessors, (102), 31 states have call successors, (31), 9 states have call predecessors, (31), 9 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2021-12-16 03:17:01,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-12-16 03:17:01,711 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:17:01,712 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:17:01,713 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:17:01,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:17:01,718 INFO L85 PathProgramCache]: Analyzing trace with hash -32550495, now seen corresponding path program 1 times [2021-12-16 03:17:01,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:17:01,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870361679] [2021-12-16 03:17:01,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:17:01,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:17:02,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:02,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:17:02,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:02,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-16 03:17:02,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:02,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 03:17:02,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:02,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:17:02,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:02,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-16 03:17:02,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:02,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-16 03:17:02,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:02,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-16 03:17:02,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:02,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-16 03:17:02,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:02,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-16 03:17:02,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:02,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-16 03:17:02,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:02,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-16 03:17:02,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:02,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-16 03:17:02,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:02,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-16 03:17:02,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:02,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-16 03:17:02,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:02,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-16 03:17:02,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:02,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:17:02,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:02,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 03:17:02,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:02,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-16 03:17:02,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:02,525 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2021-12-16 03:17:02,526 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:17:02,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870361679] [2021-12-16 03:17:02,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870361679] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:17:02,527 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:17:02,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 03:17:02,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881412746] [2021-12-16 03:17:02,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:17:02,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 03:17:02,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:17:02,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 03:17:02,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 03:17:02,567 INFO L87 Difference]: Start difference. First operand has 123 states, 81 states have (on average 1.2592592592592593) internal successors, (102), 83 states have internal predecessors, (102), 31 states have call successors, (31), 9 states have call predecessors, (31), 9 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (19), 4 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-16 03:17:02,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:17:02,903 INFO L93 Difference]: Finished difference Result 243 states and 348 transitions. [2021-12-16 03:17:02,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 03:17:02,906 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (19), 4 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 116 [2021-12-16 03:17:02,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:17:02,914 INFO L225 Difference]: With dead ends: 243 [2021-12-16 03:17:02,914 INFO L226 Difference]: Without dead ends: 120 [2021-12-16 03:17:02,918 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:17:02,921 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 103 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 03:17:02,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 221 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-16 03:17:02,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-12-16 03:17:02,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 118. [2021-12-16 03:17:02,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 77 states have (on average 1.2207792207792207) internal successors, (94), 78 states have internal predecessors, (94), 31 states have call successors, (31), 9 states have call predecessors, (31), 9 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2021-12-16 03:17:02,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 155 transitions. [2021-12-16 03:17:02,965 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 155 transitions. Word has length 116 [2021-12-16 03:17:02,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:17:02,966 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 155 transitions. [2021-12-16 03:17:02,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (19), 4 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-16 03:17:02,966 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 155 transitions. [2021-12-16 03:17:02,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-12-16 03:17:02,969 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:17:02,969 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:17:02,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 03:17:02,970 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:17:02,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:17:02,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1139488593, now seen corresponding path program 1 times [2021-12-16 03:17:02,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:17:02,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796183905] [2021-12-16 03:17:02,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:17:02,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:17:03,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:03,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:17:03,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:03,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-16 03:17:03,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:03,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 03:17:03,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:03,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:17:03,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:03,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-16 03:17:03,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:03,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-16 03:17:03,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:03,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-16 03:17:03,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:03,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-16 03:17:03,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:03,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-16 03:17:03,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:03,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-16 03:17:03,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:03,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-16 03:17:03,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:03,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-16 03:17:03,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:03,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-16 03:17:03,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:03,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-16 03:17:03,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:03,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-16 03:17:03,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:03,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:17:03,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:03,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 03:17:03,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:03,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-16 03:17:03,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:03,448 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2021-12-16 03:17:03,448 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:17:03,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796183905] [2021-12-16 03:17:03,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796183905] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:17:03,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685377824] [2021-12-16 03:17:03,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:17:03,449 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:17:03,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:17:03,451 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 03:17:03,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-16 03:17:03,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:03,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 2650 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-16 03:17:03,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:17:04,341 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2021-12-16 03:17:04,342 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:17:04,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [685377824] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:17:04,342 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 03:17:04,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2021-12-16 03:17:04,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146607076] [2021-12-16 03:17:04,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:17:04,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 03:17:04,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:17:04,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 03:17:04,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-12-16 03:17:04,350 INFO L87 Difference]: Start difference. First operand 118 states and 155 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-12-16 03:17:04,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:17:04,554 INFO L93 Difference]: Finished difference Result 211 states and 280 transitions. [2021-12-16 03:17:04,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 03:17:04,555 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 116 [2021-12-16 03:17:04,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:17:04,557 INFO L225 Difference]: With dead ends: 211 [2021-12-16 03:17:04,557 INFO L226 Difference]: Without dead ends: 121 [2021-12-16 03:17:04,558 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-12-16 03:17:04,559 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 174 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 03:17:04,559 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 313 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 03:17:04,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-12-16 03:17:04,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2021-12-16 03:17:04,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 79 states have (on average 1.2151898734177216) internal successors, (96), 81 states have internal predecessors, (96), 31 states have call successors, (31), 9 states have call predecessors, (31), 10 states have return successors, (32), 30 states have call predecessors, (32), 30 states have call successors, (32) [2021-12-16 03:17:04,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 159 transitions. [2021-12-16 03:17:04,581 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 159 transitions. Word has length 116 [2021-12-16 03:17:04,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:17:04,582 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 159 transitions. [2021-12-16 03:17:04,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-12-16 03:17:04,582 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 159 transitions. [2021-12-16 03:17:04,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-12-16 03:17:04,589 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:17:04,589 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:17:04,624 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-16 03:17:04,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:17:04,815 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:17:04,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:17:04,815 INFO L85 PathProgramCache]: Analyzing trace with hash -787565290, now seen corresponding path program 1 times [2021-12-16 03:17:04,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:17:04,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285390720] [2021-12-16 03:17:04,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:17:04,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:17:04,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:05,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:17:05,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:05,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-16 03:17:05,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:05,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 03:17:05,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:05,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:17:05,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:05,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-16 03:17:05,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:05,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-16 03:17:05,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:05,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-16 03:17:05,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:05,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-16 03:17:05,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:05,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-16 03:17:05,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:05,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-16 03:17:05,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:05,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-16 03:17:05,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:05,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-16 03:17:05,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:05,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-16 03:17:05,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:05,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-16 03:17:05,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:05,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 03:17:05,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:05,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:17:05,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:05,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 03:17:05,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:05,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-16 03:17:05,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:05,277 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2021-12-16 03:17:05,278 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:17:05,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285390720] [2021-12-16 03:17:05,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285390720] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:17:05,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1974046634] [2021-12-16 03:17:05,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:17:05,278 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:17:05,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:17:05,296 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 03:17:05,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-16 03:17:05,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:05,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 2655 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-16 03:17:05,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:17:06,109 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-12-16 03:17:06,109 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:17:06,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1974046634] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:17:06,110 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 03:17:06,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2021-12-16 03:17:06,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027305671] [2021-12-16 03:17:06,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:17:06,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 03:17:06,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:17:06,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 03:17:06,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2021-12-16 03:17:06,111 INFO L87 Difference]: Start difference. First operand 121 states and 159 transitions. Second operand has 7 states, 6 states have (on average 9.5) internal successors, (57), 7 states have internal predecessors, (57), 4 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2021-12-16 03:17:06,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:17:06,305 INFO L93 Difference]: Finished difference Result 198 states and 259 transitions. [2021-12-16 03:17:06,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 03:17:06,306 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.5) internal successors, (57), 7 states have internal predecessors, (57), 4 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) Word has length 118 [2021-12-16 03:17:06,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:17:06,308 INFO L225 Difference]: With dead ends: 198 [2021-12-16 03:17:06,308 INFO L226 Difference]: Without dead ends: 118 [2021-12-16 03:17:06,309 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2021-12-16 03:17:06,309 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 191 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 03:17:06,310 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [191 Valid, 411 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 03:17:06,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-12-16 03:17:06,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2021-12-16 03:17:06,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 77 states have (on average 1.2077922077922079) internal successors, (93), 78 states have internal predecessors, (93), 31 states have call successors, (31), 9 states have call predecessors, (31), 9 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2021-12-16 03:17:06,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 154 transitions. [2021-12-16 03:17:06,320 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 154 transitions. Word has length 118 [2021-12-16 03:17:06,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:17:06,320 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 154 transitions. [2021-12-16 03:17:06,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.5) internal successors, (57), 7 states have internal predecessors, (57), 4 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2021-12-16 03:17:06,321 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 154 transitions. [2021-12-16 03:17:06,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-12-16 03:17:06,322 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:17:06,322 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:17:06,353 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-16 03:17:06,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-12-16 03:17:06,547 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:17:06,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:17:06,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1485450464, now seen corresponding path program 1 times [2021-12-16 03:17:06,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:17:06,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037948781] [2021-12-16 03:17:06,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:17:06,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:17:06,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:06,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:17:06,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:06,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-16 03:17:06,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:06,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 03:17:06,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:06,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:17:06,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:06,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-16 03:17:06,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:06,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-16 03:17:06,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:06,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-16 03:17:06,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:06,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-16 03:17:06,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:06,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-16 03:17:06,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:06,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-16 03:17:06,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:06,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-16 03:17:06,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:06,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-16 03:17:06,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:06,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-16 03:17:06,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:06,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-16 03:17:06,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:06,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-16 03:17:06,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:06,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:17:06,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:06,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 03:17:06,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:06,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-16 03:17:06,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:06,989 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2021-12-16 03:17:06,989 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:17:06,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037948781] [2021-12-16 03:17:06,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037948781] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:17:06,990 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:17:06,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-16 03:17:06,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92881708] [2021-12-16 03:17:06,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:17:06,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-16 03:17:06,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:17:06,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-16 03:17:06,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-16 03:17:06,995 INFO L87 Difference]: Start difference. First operand 118 states and 154 transitions. Second operand has 10 states, 9 states have (on average 5.555555555555555) internal successors, (50), 6 states have internal predecessors, (50), 2 states have call successors, (19), 4 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2021-12-16 03:17:07,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:17:07,547 INFO L93 Difference]: Finished difference Result 132 states and 172 transitions. [2021-12-16 03:17:07,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-16 03:17:07,548 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.555555555555555) internal successors, (50), 6 states have internal predecessors, (50), 2 states have call successors, (19), 4 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) Word has length 122 [2021-12-16 03:17:07,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:17:07,552 INFO L225 Difference]: With dead ends: 132 [2021-12-16 03:17:07,552 INFO L226 Difference]: Without dead ends: 130 [2021-12-16 03:17:07,553 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-12-16 03:17:07,556 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 125 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 775 SdHoareTripleChecker+Invalid, 520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-16 03:17:07,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 775 Invalid, 520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-16 03:17:07,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-12-16 03:17:07,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 127. [2021-12-16 03:17:07,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 83 states have (on average 1.1927710843373494) internal successors, (99), 85 states have internal predecessors, (99), 32 states have call successors, (32), 10 states have call predecessors, (32), 11 states have return successors, (35), 31 states have call predecessors, (35), 31 states have call successors, (35) [2021-12-16 03:17:07,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 166 transitions. [2021-12-16 03:17:07,585 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 166 transitions. Word has length 122 [2021-12-16 03:17:07,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:17:07,587 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 166 transitions. [2021-12-16 03:17:07,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.555555555555555) internal successors, (50), 6 states have internal predecessors, (50), 2 states have call successors, (19), 4 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2021-12-16 03:17:07,587 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 166 transitions. [2021-12-16 03:17:07,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-12-16 03:17:07,588 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:17:07,588 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:17:07,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-16 03:17:07,588 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:17:07,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:17:07,589 INFO L85 PathProgramCache]: Analyzing trace with hash 52780584, now seen corresponding path program 1 times [2021-12-16 03:17:07,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:17:07,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037893953] [2021-12-16 03:17:07,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:17:07,589 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:17:07,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:07,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:17:07,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:07,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-16 03:17:07,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:07,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 03:17:07,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:07,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:17:07,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:07,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-16 03:17:07,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:07,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-16 03:17:07,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:07,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-16 03:17:08,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:08,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-16 03:17:08,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:08,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-16 03:17:08,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:08,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-16 03:17:08,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:08,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-16 03:17:08,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:08,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-16 03:17:08,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:08,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-16 03:17:08,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:08,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-16 03:17:08,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:08,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-16 03:17:08,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:08,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:17:08,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:08,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 03:17:08,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:08,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-16 03:17:08,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:08,413 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2021-12-16 03:17:08,413 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:17:08,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037893953] [2021-12-16 03:17:08,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037893953] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:17:08,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634667420] [2021-12-16 03:17:08,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:17:08,414 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:17:08,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:17:08,415 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 03:17:08,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-16 03:17:08,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:08,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 2677 conjuncts, 49 conjunts are in the unsatisfiable core [2021-12-16 03:17:08,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:17:09,058 INFO L388 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-16 03:17:10,331 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 90 proven. 10 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-12-16 03:17:10,331 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 03:17:11,049 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2021-12-16 03:17:11,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1634667420] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 03:17:11,049 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 03:17:11,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 11] total 30 [2021-12-16 03:17:11,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632135602] [2021-12-16 03:17:11,050 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 03:17:11,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-12-16 03:17:11,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:17:11,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-12-16 03:17:11,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=765, Unknown=0, NotChecked=0, Total=870 [2021-12-16 03:17:11,052 INFO L87 Difference]: Start difference. First operand 127 states and 166 transitions. Second operand has 30 states, 28 states have (on average 4.285714285714286) internal successors, (120), 28 states have internal predecessors, (120), 11 states have call successors, (39), 7 states have call predecessors, (39), 8 states have return successors, (37), 9 states have call predecessors, (37), 10 states have call successors, (37) [2021-12-16 03:17:13,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:17:13,334 INFO L93 Difference]: Finished difference Result 329 states and 454 transitions. [2021-12-16 03:17:13,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-12-16 03:17:13,335 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 28 states have (on average 4.285714285714286) internal successors, (120), 28 states have internal predecessors, (120), 11 states have call successors, (39), 7 states have call predecessors, (39), 8 states have return successors, (37), 9 states have call predecessors, (37), 10 states have call successors, (37) Word has length 126 [2021-12-16 03:17:13,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:17:13,338 INFO L225 Difference]: With dead ends: 329 [2021-12-16 03:17:13,339 INFO L226 Difference]: Without dead ends: 269 [2021-12-16 03:17:13,340 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 257 SyntacticMatches, 19 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 727 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=406, Invalid=1946, Unknown=0, NotChecked=0, Total=2352 [2021-12-16 03:17:13,341 INFO L933 BasicCegarLoop]: 229 mSDtfsCounter, 322 mSDsluCounter, 1386 mSDsCounter, 0 mSdLazyCounter, 1832 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 1615 SdHoareTripleChecker+Invalid, 2474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 1832 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 431 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-16 03:17:13,341 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [371 Valid, 1615 Invalid, 2474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [211 Valid, 1832 Invalid, 0 Unknown, 431 Unchecked, 1.5s Time] [2021-12-16 03:17:13,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2021-12-16 03:17:13,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 183. [2021-12-16 03:17:13,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 119 states have (on average 1.1764705882352942) internal successors, (140), 123 states have internal predecessors, (140), 46 states have call successors, (46), 14 states have call predecessors, (46), 17 states have return successors, (56), 45 states have call predecessors, (56), 45 states have call successors, (56) [2021-12-16 03:17:13,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 242 transitions. [2021-12-16 03:17:13,361 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 242 transitions. Word has length 126 [2021-12-16 03:17:13,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:17:13,362 INFO L470 AbstractCegarLoop]: Abstraction has 183 states and 242 transitions. [2021-12-16 03:17:13,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 28 states have (on average 4.285714285714286) internal successors, (120), 28 states have internal predecessors, (120), 11 states have call successors, (39), 7 states have call predecessors, (39), 8 states have return successors, (37), 9 states have call predecessors, (37), 10 states have call successors, (37) [2021-12-16 03:17:13,362 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 242 transitions. [2021-12-16 03:17:13,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-12-16 03:17:13,364 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:17:13,364 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:17:13,399 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-16 03:17:13,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:17:13,588 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:17:13,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:17:13,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1659869525, now seen corresponding path program 1 times [2021-12-16 03:17:13,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:17:13,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039389166] [2021-12-16 03:17:13,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:17:13,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:17:13,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:13,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:17:13,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:13,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-16 03:17:13,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:13,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 03:17:13,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:13,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:17:13,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:13,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-16 03:17:13,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:13,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-16 03:17:13,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:13,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-16 03:17:13,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:13,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-16 03:17:13,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:13,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-16 03:17:13,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:13,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-16 03:17:13,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:13,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-16 03:17:13,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:13,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 03:17:13,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:13,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-16 03:17:13,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:13,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-16 03:17:13,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:13,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-16 03:17:13,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:13,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-16 03:17:14,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:14,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:17:14,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:14,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 03:17:14,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:14,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-16 03:17:14,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:14,246 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2021-12-16 03:17:14,246 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:17:14,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039389166] [2021-12-16 03:17:14,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039389166] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:17:14,246 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:17:14,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-16 03:17:14,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212178554] [2021-12-16 03:17:14,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:17:14,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-16 03:17:14,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:17:14,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-16 03:17:14,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-12-16 03:17:14,248 INFO L87 Difference]: Start difference. First operand 183 states and 242 transitions. Second operand has 14 states, 13 states have (on average 4.538461538461538) internal successors, (59), 12 states have internal predecessors, (59), 5 states have call successors, (20), 4 states have call predecessors, (20), 3 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2021-12-16 03:17:15,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:17:15,190 INFO L93 Difference]: Finished difference Result 280 states and 376 transitions. [2021-12-16 03:17:15,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 03:17:15,191 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 4.538461538461538) internal successors, (59), 12 states have internal predecessors, (59), 5 states have call successors, (20), 4 states have call predecessors, (20), 3 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) Word has length 133 [2021-12-16 03:17:15,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:17:15,194 INFO L225 Difference]: With dead ends: 280 [2021-12-16 03:17:15,194 INFO L226 Difference]: Without dead ends: 220 [2021-12-16 03:17:15,195 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=90, Invalid=372, Unknown=0, NotChecked=0, Total=462 [2021-12-16 03:17:15,196 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 183 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 995 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 655 SdHoareTripleChecker+Invalid, 1091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-16 03:17:15,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [197 Valid, 655 Invalid, 1091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 995 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-16 03:17:15,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-12-16 03:17:15,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 187. [2021-12-16 03:17:15,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 122 states have (on average 1.180327868852459) internal successors, (144), 127 states have internal predecessors, (144), 46 states have call successors, (46), 14 states have call predecessors, (46), 18 states have return successors, (58), 45 states have call predecessors, (58), 45 states have call successors, (58) [2021-12-16 03:17:15,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 248 transitions. [2021-12-16 03:17:15,224 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 248 transitions. Word has length 133 [2021-12-16 03:17:15,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:17:15,225 INFO L470 AbstractCegarLoop]: Abstraction has 187 states and 248 transitions. [2021-12-16 03:17:15,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 4.538461538461538) internal successors, (59), 12 states have internal predecessors, (59), 5 states have call successors, (20), 4 states have call predecessors, (20), 3 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2021-12-16 03:17:15,225 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 248 transitions. [2021-12-16 03:17:15,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-12-16 03:17:15,227 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:17:15,228 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:17:15,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-16 03:17:15,228 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:17:15,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:17:15,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1035068520, now seen corresponding path program 1 times [2021-12-16 03:17:15,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:17:15,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357752291] [2021-12-16 03:17:15,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:17:15,229 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:17:15,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:15,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:17:15,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:15,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-16 03:17:15,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:15,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 03:17:15,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:15,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:17:15,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:15,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-16 03:17:15,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:15,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-16 03:17:15,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:15,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-16 03:17:15,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:15,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-16 03:17:15,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:15,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-16 03:17:15,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:15,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-16 03:17:15,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:15,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-16 03:17:15,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:15,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 03:17:15,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:15,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-16 03:17:15,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:15,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-16 03:17:15,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:15,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-16 03:17:15,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:15,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-16 03:17:15,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:15,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:17:15,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:15,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 03:17:15,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:15,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-16 03:17:15,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:15,753 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2021-12-16 03:17:15,753 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:17:15,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357752291] [2021-12-16 03:17:15,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357752291] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:17:15,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545974032] [2021-12-16 03:17:15,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:17:15,754 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:17:15,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:17:15,756 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 03:17:15,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-16 03:17:16,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:16,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 2726 conjuncts, 71 conjunts are in the unsatisfiable core [2021-12-16 03:17:16,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:17:16,292 INFO L388 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-16 03:17:18,062 INFO L388 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 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-16 03:17:20,078 WARN L860 $PredicateComparison]: unable to prove that (exists ((|save_byte_from_array_~storage#1.base| Int) (v_ArrVal_275 Int) (v_ArrVal_273 Int)) (= |c_#memory_int| (store |c_old(#memory_int)| |save_byte_from_array_~storage#1.base| (store (store (select |c_old(#memory_int)| |save_byte_from_array_~storage#1.base|) |c_save_byte_from_array_#in~storage#1.offset| v_ArrVal_273) (+ |c_save_byte_from_array_#in~storage#1.offset| 8) v_ArrVal_275)))) is different from true [2021-12-16 03:17:20,101 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-12-16 03:17:20,101 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 37 [2021-12-16 03:17:20,840 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 103 proven. 12 refuted. 0 times theorem prover too weak. 88 trivial. 2 not checked. [2021-12-16 03:17:20,840 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 03:17:21,400 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2021-12-16 03:17:21,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1545974032] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 03:17:21,401 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 03:17:21,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 20, 9] total 31 [2021-12-16 03:17:21,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344445001] [2021-12-16 03:17:21,401 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 03:17:21,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-12-16 03:17:21,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:17:21,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-12-16 03:17:21,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=779, Unknown=2, NotChecked=56, Total=930 [2021-12-16 03:17:21,403 INFO L87 Difference]: Start difference. First operand 187 states and 248 transitions. Second operand has 31 states, 27 states have (on average 4.703703703703703) internal successors, (127), 29 states have internal predecessors, (127), 14 states have call successors, (45), 6 states have call predecessors, (45), 8 states have return successors, (41), 10 states have call predecessors, (41), 14 states have call successors, (41) [2021-12-16 03:17:25,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:17:25,619 INFO L93 Difference]: Finished difference Result 421 states and 588 transitions. [2021-12-16 03:17:25,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-12-16 03:17:25,619 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 27 states have (on average 4.703703703703703) internal successors, (127), 29 states have internal predecessors, (127), 14 states have call successors, (45), 6 states have call predecessors, (45), 8 states have return successors, (41), 10 states have call predecessors, (41), 14 states have call successors, (41) Word has length 133 [2021-12-16 03:17:25,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:17:25,623 INFO L225 Difference]: With dead ends: 421 [2021-12-16 03:17:25,623 INFO L226 Difference]: Without dead ends: 342 [2021-12-16 03:17:25,625 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 272 SyntacticMatches, 17 SemanticMatches, 54 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 798 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=329, Invalid=2641, Unknown=4, NotChecked=106, Total=3080 [2021-12-16 03:17:25,625 INFO L933 BasicCegarLoop]: 226 mSDtfsCounter, 327 mSDsluCounter, 1754 mSDsCounter, 0 mSdLazyCounter, 1923 mSolverCounterSat, 234 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 1980 SdHoareTripleChecker+Invalid, 3133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 234 IncrementalHoareTripleChecker+Valid, 1923 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 976 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-16 03:17:25,626 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [359 Valid, 1980 Invalid, 3133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [234 Valid, 1923 Invalid, 0 Unknown, 976 Unchecked, 1.5s Time] [2021-12-16 03:17:25,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2021-12-16 03:17:25,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 234. [2021-12-16 03:17:25,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 152 states have (on average 1.1776315789473684) internal successors, (179), 156 states have internal predecessors, (179), 60 states have call successors, (60), 18 states have call predecessors, (60), 21 states have return successors, (74), 59 states have call predecessors, (74), 59 states have call successors, (74) [2021-12-16 03:17:25,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 313 transitions. [2021-12-16 03:17:25,652 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 313 transitions. Word has length 133 [2021-12-16 03:17:25,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:17:25,653 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 313 transitions. [2021-12-16 03:17:25,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 27 states have (on average 4.703703703703703) internal successors, (127), 29 states have internal predecessors, (127), 14 states have call successors, (45), 6 states have call predecessors, (45), 8 states have return successors, (41), 10 states have call predecessors, (41), 14 states have call successors, (41) [2021-12-16 03:17:25,653 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 313 transitions. [2021-12-16 03:17:25,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-16 03:17:25,655 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:17:25,656 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:17:25,682 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-16 03:17:25,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:17:25,871 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:17:25,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:17:25,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1596672477, now seen corresponding path program 1 times [2021-12-16 03:17:25,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:17:25,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041590398] [2021-12-16 03:17:25,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:17:25,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:17:26,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:26,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:17:26,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:26,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-16 03:17:26,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:26,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 03:17:26,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:26,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:17:26,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:26,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-16 03:17:26,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:26,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-16 03:17:26,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:26,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-16 03:17:26,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:26,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-16 03:17:26,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:26,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-16 03:17:26,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:26,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-16 03:17:26,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:26,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-16 03:17:26,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:26,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-16 03:17:26,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:26,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-16 03:17:26,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:26,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-16 03:17:26,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:26,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-16 03:17:26,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:26,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:17:26,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:26,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 03:17:26,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:26,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-16 03:17:26,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:26,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-16 03:17:26,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:26,945 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2021-12-16 03:17:26,945 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:17:26,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041590398] [2021-12-16 03:17:26,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041590398] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:17:26,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [361297350] [2021-12-16 03:17:26,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:17:26,946 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:17:26,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:17:26,948 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 03:17:26,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-16 03:17:27,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:27,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 2681 conjuncts, 70 conjunts are in the unsatisfiable core [2021-12-16 03:17:27,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:17:27,779 INFO L388 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-16 03:17:29,832 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2021-12-16 03:17:29,972 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 16 proven. 100 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-12-16 03:17:29,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 03:17:32,340 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2021-12-16 03:17:32,345 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-12-16 03:17:32,741 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 14 proven. 28 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2021-12-16 03:17:32,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [361297350] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 03:17:32,742 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 03:17:32,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 30, 26] total 74 [2021-12-16 03:17:32,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674514661] [2021-12-16 03:17:32,742 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 03:17:32,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2021-12-16 03:17:32,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:17:32,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2021-12-16 03:17:32,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=330, Invalid=5072, Unknown=0, NotChecked=0, Total=5402 [2021-12-16 03:17:32,746 INFO L87 Difference]: Start difference. First operand 234 states and 313 transitions. Second operand has 74 states, 65 states have (on average 2.6) internal successors, (169), 62 states have internal predecessors, (169), 27 states have call successors, (57), 12 states have call predecessors, (57), 17 states have return successors, (54), 23 states have call predecessors, (54), 25 states have call successors, (54) [2021-12-16 03:17:40,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:17:40,046 INFO L93 Difference]: Finished difference Result 648 states and 860 transitions. [2021-12-16 03:17:40,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-12-16 03:17:40,046 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 65 states have (on average 2.6) internal successors, (169), 62 states have internal predecessors, (169), 27 states have call successors, (57), 12 states have call predecessors, (57), 17 states have return successors, (54), 23 states have call predecessors, (54), 25 states have call successors, (54) Word has length 130 [2021-12-16 03:17:40,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:17:40,049 INFO L225 Difference]: With dead ends: 648 [2021-12-16 03:17:40,049 INFO L226 Difference]: Without dead ends: 425 [2021-12-16 03:17:40,053 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 254 SyntacticMatches, 16 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5277 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=1344, Invalid=15686, Unknown=0, NotChecked=0, Total=17030 [2021-12-16 03:17:40,054 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 907 mSDsluCounter, 3364 mSDsCounter, 0 mSdLazyCounter, 7978 mSolverCounterSat, 587 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 915 SdHoareTripleChecker+Valid, 3556 SdHoareTripleChecker+Invalid, 10842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 587 IncrementalHoareTripleChecker+Valid, 7978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2277 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2021-12-16 03:17:40,054 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [915 Valid, 3556 Invalid, 10842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [587 Valid, 7978 Invalid, 0 Unknown, 2277 Unchecked, 4.7s Time] [2021-12-16 03:17:40,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2021-12-16 03:17:40,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 332. [2021-12-16 03:17:40,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 225 states have (on average 1.1644444444444444) internal successors, (262), 231 states have internal predecessors, (262), 73 states have call successors, (73), 29 states have call predecessors, (73), 33 states have return successors, (86), 71 states have call predecessors, (86), 70 states have call successors, (86) [2021-12-16 03:17:40,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 421 transitions. [2021-12-16 03:17:40,081 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 421 transitions. Word has length 130 [2021-12-16 03:17:40,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:17:40,081 INFO L470 AbstractCegarLoop]: Abstraction has 332 states and 421 transitions. [2021-12-16 03:17:40,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 65 states have (on average 2.6) internal successors, (169), 62 states have internal predecessors, (169), 27 states have call successors, (57), 12 states have call predecessors, (57), 17 states have return successors, (54), 23 states have call predecessors, (54), 25 states have call successors, (54) [2021-12-16 03:17:40,082 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 421 transitions. [2021-12-16 03:17:40,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-12-16 03:17:40,084 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:17:40,084 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:17:40,109 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-16 03:17:40,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:17:40,300 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:17:40,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:17:40,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1482930720, now seen corresponding path program 2 times [2021-12-16 03:17:40,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:17:40,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442137677] [2021-12-16 03:17:40,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:17:40,301 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:17:40,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:40,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:17:40,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:40,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-16 03:17:40,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:40,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 03:17:40,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:40,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:17:40,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:40,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-16 03:17:40,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:40,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-16 03:17:40,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:40,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-16 03:17:40,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:40,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-16 03:17:40,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:40,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-16 03:17:40,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:40,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-16 03:17:40,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:40,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-16 03:17:40,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:41,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 03:17:41,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:41,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-16 03:17:41,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:41,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-16 03:17:41,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:41,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-16 03:17:41,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:41,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-16 03:17:41,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:41,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:17:41,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:41,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 03:17:41,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:41,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-16 03:17:41,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:41,218 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2021-12-16 03:17:41,218 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:17:41,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442137677] [2021-12-16 03:17:41,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442137677] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:17:41,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772478189] [2021-12-16 03:17:41,219 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-16 03:17:41,219 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:17:41,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:17:41,220 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 03:17:41,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-16 03:17:42,365 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-16 03:17:42,366 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 03:17:42,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 2738 conjuncts, 65 conjunts are in the unsatisfiable core [2021-12-16 03:17:42,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:17:42,387 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-16 03:17:42,696 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-16 03:17:42,696 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-12-16 03:17:43,359 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-16 03:17:43,360 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-12-16 03:17:43,405 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2021-12-16 03:17:43,522 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-16 03:17:43,523 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-16 03:17:43,641 INFO L388 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 0 case distinctions, treesize of input 8 treesize of output 1 [2021-12-16 03:17:43,660 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_406 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_save_byte_from_array_#in~storage#1.base| v_ArrVal_406))) is different from true [2021-12-16 03:17:43,674 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-16 03:17:44,497 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 66 proven. 100 refuted. 0 times theorem prover too weak. 41 trivial. 2 not checked. [2021-12-16 03:17:44,498 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 03:17:44,800 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_410 (Array Int Int))) (let ((.cse0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_aws_byte_cursor_eq_c_str_harness_~#old_byte_from_str~0#1.base| v_ArrVal_410) |c_ULTIMATE.start_aws_byte_cursor_eq_c_str_harness_~#cur~3#1.base|) |c_ULTIMATE.start_aws_byte_cursor_eq_c_str_harness_~#cur~3#1.offset|))) (<= (* 18446744073709551616 (div (+ .cse0 18446744073709551615) 18446744073709551616)) .cse0))) is different from false [2021-12-16 03:17:44,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1772478189] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:17:44,801 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-16 03:17:44,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24] total 44 [2021-12-16 03:17:44,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251304417] [2021-12-16 03:17:44,802 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-16 03:17:44,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2021-12-16 03:17:44,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:17:44,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-12-16 03:17:44,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=1901, Unknown=2, NotChecked=178, Total=2256 [2021-12-16 03:17:44,803 INFO L87 Difference]: Start difference. First operand 332 states and 421 transitions. Second operand has 44 states, 39 states have (on average 3.3846153846153846) internal successors, (132), 39 states have internal predecessors, (132), 18 states have call successors, (37), 10 states have call predecessors, (37), 14 states have return successors, (36), 15 states have call predecessors, (36), 18 states have call successors, (36) [2021-12-16 03:17:47,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:17:47,684 INFO L93 Difference]: Finished difference Result 603 states and 776 transitions. [2021-12-16 03:17:47,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-12-16 03:17:47,685 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 39 states have (on average 3.3846153846153846) internal successors, (132), 39 states have internal predecessors, (132), 18 states have call successors, (37), 10 states have call predecessors, (37), 14 states have return successors, (36), 15 states have call predecessors, (36), 18 states have call successors, (36) Word has length 137 [2021-12-16 03:17:47,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:17:47,687 INFO L225 Difference]: With dead ends: 603 [2021-12-16 03:17:47,688 INFO L226 Difference]: Without dead ends: 521 [2021-12-16 03:17:47,689 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 192 SyntacticMatches, 30 SemanticMatches, 74 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1947 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=474, Invalid=4934, Unknown=2, NotChecked=290, Total=5700 [2021-12-16 03:17:47,690 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 313 mSDsluCounter, 1558 mSDsCounter, 0 mSdLazyCounter, 2884 mSolverCounterSat, 261 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 1715 SdHoareTripleChecker+Invalid, 5215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 261 IncrementalHoareTripleChecker+Valid, 2884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2070 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-16 03:17:47,690 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [338 Valid, 1715 Invalid, 5215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [261 Valid, 2884 Invalid, 0 Unknown, 2070 Unchecked, 1.9s Time] [2021-12-16 03:17:47,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2021-12-16 03:17:47,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 428. [2021-12-16 03:17:47,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 293 states have (on average 1.1604095563139931) internal successors, (340), 300 states have internal predecessors, (340), 89 states have call successors, (89), 41 states have call predecessors, (89), 45 states have return successors, (106), 86 states have call predecessors, (106), 86 states have call successors, (106) [2021-12-16 03:17:47,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 535 transitions. [2021-12-16 03:17:47,720 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 535 transitions. Word has length 137 [2021-12-16 03:17:47,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:17:47,720 INFO L470 AbstractCegarLoop]: Abstraction has 428 states and 535 transitions. [2021-12-16 03:17:47,720 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 39 states have (on average 3.3846153846153846) internal successors, (132), 39 states have internal predecessors, (132), 18 states have call successors, (37), 10 states have call predecessors, (37), 14 states have return successors, (36), 15 states have call predecessors, (36), 18 states have call successors, (36) [2021-12-16 03:17:47,720 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 535 transitions. [2021-12-16 03:17:47,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-16 03:17:47,722 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:17:47,723 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:17:47,746 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-16 03:17:47,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:17:47,932 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:17:47,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:17:47,932 INFO L85 PathProgramCache]: Analyzing trace with hash 614480933, now seen corresponding path program 1 times [2021-12-16 03:17:47,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:17:47,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035442932] [2021-12-16 03:17:47,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:17:47,933 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:17:48,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:48,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:17:48,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:48,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-16 03:17:48,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:48,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 03:17:48,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:48,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:17:48,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:48,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-16 03:17:48,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:48,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-16 03:17:48,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:48,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-16 03:17:48,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:48,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-16 03:17:48,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:48,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-16 03:17:48,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:48,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-16 03:17:48,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:48,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-16 03:17:48,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:48,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-16 03:17:48,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:48,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-16 03:17:48,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:48,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-16 03:17:48,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:48,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-16 03:17:48,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:48,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:17:48,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:48,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 03:17:48,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:48,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-16 03:17:48,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:48,260 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 12 proven. 22 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-12-16 03:17:48,260 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:17:48,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035442932] [2021-12-16 03:17:48,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035442932] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:17:48,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241711069] [2021-12-16 03:17:48,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:17:48,261 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:17:48,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:17:48,262 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 03:17:48,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-16 03:17:48,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:48,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 2705 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-16 03:17:48,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:17:48,934 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2021-12-16 03:17:48,934 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:17:48,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1241711069] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:17:48,934 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 03:17:48,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 12 [2021-12-16 03:17:48,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8966001] [2021-12-16 03:17:48,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:17:48,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 03:17:48,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:17:48,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 03:17:48,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2021-12-16 03:17:48,936 INFO L87 Difference]: Start difference. First operand 428 states and 535 transitions. Second operand has 9 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18)