./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_hash_callback_c_str_eq_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fcb8e130 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_hash_callback_c_str_eq_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 e2319232de809c5fc7a2ae9b5bcaacd5710dfa5ecc8cc9afebba783e154bd6e0 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-fcb8e13 [2021-11-22 20:02:08,376 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 20:02:08,378 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 20:02:08,428 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 20:02:08,428 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 20:02:08,443 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 20:02:08,444 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 20:02:08,445 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 20:02:08,446 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 20:02:08,446 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 20:02:08,447 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 20:02:08,448 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 20:02:08,448 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 20:02:08,448 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 20:02:08,449 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 20:02:08,450 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 20:02:08,450 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 20:02:08,451 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 20:02:08,452 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 20:02:08,453 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 20:02:08,453 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 20:02:08,454 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 20:02:08,457 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 20:02:08,457 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 20:02:08,459 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 20:02:08,460 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 20:02:08,463 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 20:02:08,464 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 20:02:08,464 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 20:02:08,465 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 20:02:08,465 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 20:02:08,465 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 20:02:08,466 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 20:02:08,467 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 20:02:08,467 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 20:02:08,468 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 20:02:08,469 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 20:02:08,469 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 20:02:08,469 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 20:02:08,470 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 20:02:08,470 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 20:02:08,471 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-22 20:02:08,487 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 20:02:08,487 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 20:02:08,487 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 20:02:08,488 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 20:02:08,488 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 20:02:08,489 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 20:02:08,489 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 20:02:08,489 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 20:02:08,489 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 20:02:08,489 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 20:02:08,490 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 20:02:08,490 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 20:02:08,490 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 20:02:08,490 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 20:02:08,490 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 20:02:08,491 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 20:02:08,491 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 20:02:08,491 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 20:02:08,491 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 20:02:08,491 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 20:02:08,491 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 20:02:08,491 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 20:02:08,492 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 20:02:08,492 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 20:02:08,492 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 20:02:08,492 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 20:02:08,492 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 20:02:08,493 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 20:02:08,493 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 20:02:08,493 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e2319232de809c5fc7a2ae9b5bcaacd5710dfa5ecc8cc9afebba783e154bd6e0 [2021-11-22 20:02:08,669 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 20:02:08,705 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 20:02:08,707 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 20:02:08,708 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 20:02:08,709 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 20:02:08,710 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_hash_callback_c_str_eq_harness.i [2021-11-22 20:02:08,762 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3699705d3/671a14ddf89b4df7ade12ad40c4fb51b/FLAG539ff51ad [2021-11-22 20:02:09,330 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 20:02:09,331 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_callback_c_str_eq_harness.i [2021-11-22 20:02:09,361 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3699705d3/671a14ddf89b4df7ade12ad40c4fb51b/FLAG539ff51ad [2021-11-22 20:02:09,782 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3699705d3/671a14ddf89b4df7ade12ad40c4fb51b [2021-11-22 20:02:09,784 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 20:02:09,786 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 20:02:09,789 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 20:02:09,789 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 20:02:09,791 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 20:02:09,792 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 08:02:09" (1/1) ... [2021-11-22 20:02:09,793 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cfab930 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:02:09, skipping insertion in model container [2021-11-22 20:02:09,793 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 08:02:09" (1/1) ... [2021-11-22 20:02:09,797 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 20:02:09,906 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 20:02:10,192 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_hash_callback_c_str_eq_harness.i[4500,4513] [2021-11-22 20:02:10,199 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_hash_callback_c_str_eq_harness.i[4560,4573] [2021-11-22 20:02:10,899 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:10,902 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:10,903 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:10,903 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:10,904 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:10,912 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:10,913 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:10,914 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:10,915 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:11,181 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-22 20:02:11,182 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-22 20:02:11,183 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-22 20:02:11,183 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-22 20:02:11,184 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-22 20:02:11,185 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-22 20:02:11,185 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-22 20:02:11,185 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-22 20:02:11,186 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-22 20:02:11,186 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-22 20:02:11,312 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-22 20:02:11,419 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:11,420 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:11,649 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:11,653 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:11,668 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:11,669 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:11,675 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:11,676 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:11,688 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:11,690 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:11,691 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:11,691 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:11,691 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:11,692 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:11,693 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:11,731 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 20:02:11,768 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 20:02:11,784 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_hash_callback_c_str_eq_harness.i[4500,4513] [2021-11-22 20:02:11,785 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_hash_callback_c_str_eq_harness.i[4560,4573] [2021-11-22 20:02:11,818 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:11,818 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:11,820 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:11,821 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:11,821 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:11,824 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:11,824 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:11,825 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:11,825 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:11,846 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-22 20:02:11,847 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-22 20:02:11,847 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-22 20:02:11,848 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-22 20:02:11,848 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-22 20:02:11,848 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-22 20:02:11,849 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-22 20:02:11,849 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-22 20:02:11,849 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-22 20:02:11,850 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-22 20:02:11,860 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-22 20:02:11,890 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:11,892 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:11,966 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:11,983 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:11,987 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:11,988 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:11,991 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:11,991 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:11,997 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:11,998 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:11,998 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:11,998 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:11,999 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:11,999 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:11,999 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:12,023 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 20:02:12,199 INFO L208 MainTranslator]: Completed translation [2021-11-22 20:02:12,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:02:12 WrapperNode [2021-11-22 20:02:12,200 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 20:02:12,201 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 20:02:12,201 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 20:02:12,201 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 20:02:12,206 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:02:12" (1/1) ... [2021-11-22 20:02:12,312 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:02:12" (1/1) ... [2021-11-22 20:02:12,378 INFO L137 Inliner]: procedures = 768, calls = 3253, calls flagged for inlining = 1227, calls inlined = 29, statements flattened = 438 [2021-11-22 20:02:12,379 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 20:02:12,379 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 20:02:12,380 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 20:02:12,380 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 20:02:12,386 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:02:12" (1/1) ... [2021-11-22 20:02:12,386 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:02:12" (1/1) ... [2021-11-22 20:02:12,392 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:02:12" (1/1) ... [2021-11-22 20:02:12,393 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:02:12" (1/1) ... [2021-11-22 20:02:12,421 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:02:12" (1/1) ... [2021-11-22 20:02:12,429 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:02:12" (1/1) ... [2021-11-22 20:02:12,432 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:02:12" (1/1) ... [2021-11-22 20:02:12,437 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 20:02:12,452 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 20:02:12,452 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 20:02:12,452 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 20:02:12,453 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:02:12" (1/1) ... [2021-11-22 20:02:12,457 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 20:02:12,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:02:12,508 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) [2021-11-22 20:02:12,554 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 [2021-11-22 20:02:12,570 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-22 20:02:12,570 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-22 20:02:12,571 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 20:02:12,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 20:02:12,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 20:02:12,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-22 20:02:12,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 20:02:12,810 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 20:02:12,811 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 20:02:13,068 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##29: assume !true; [2021-11-22 20:02:13,069 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 20:02:13,073 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 20:02:13,073 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-22 20:02:13,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 08:02:13 BoogieIcfgContainer [2021-11-22 20:02:13,074 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 20:02:13,075 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 20:02:13,076 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 20:02:13,078 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 20:02:13,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 08:02:09" (1/3) ... [2021-11-22 20:02:13,079 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69e1bd77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 08:02:13, skipping insertion in model container [2021-11-22 20:02:13,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:02:12" (2/3) ... [2021-11-22 20:02:13,079 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69e1bd77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 08:02:13, skipping insertion in model container [2021-11-22 20:02:13,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 08:02:13" (3/3) ... [2021-11-22 20:02:13,080 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_callback_c_str_eq_harness.i [2021-11-22 20:02:13,083 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 20:02:13,083 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-22 20:02:13,110 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 20:02:13,114 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 [2021-11-22 20:02:13,115 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-22 20:02:13,123 INFO L276 IsEmpty]: Start isEmpty. Operand has 57 states, 53 states have (on average 1.3773584905660377) internal successors, (73), 56 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:02:13,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-22 20:02:13,127 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:02:13,127 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:02:13,128 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 20:02:13,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:02:13,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1599795525, now seen corresponding path program 1 times [2021-11-22 20:02:13,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:02:13,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144766267] [2021-11-22 20:02:13,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:02:13,146 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:02:13,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:02:13,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:02:13,443 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:02:13,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144766267] [2021-11-22 20:02:13,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144766267] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:02:13,444 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:02:13,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 20:02:13,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712504604] [2021-11-22 20:02:13,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:02:13,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-22 20:02:13,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:02:13,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-22 20:02:13,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 20:02:13,480 INFO L87 Difference]: Start difference. First operand has 57 states, 53 states have (on average 1.3773584905660377) internal successors, (73), 56 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:02:13,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:02:13,493 INFO L93 Difference]: Finished difference Result 110 states and 141 transitions. [2021-11-22 20:02:13,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 20:02:13,495 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-11-22 20:02:13,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:02:13,506 INFO L225 Difference]: With dead ends: 110 [2021-11-22 20:02:13,506 INFO L226 Difference]: Without dead ends: 51 [2021-11-22 20:02:13,508 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 20:02:13,510 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 20:02:13,511 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 20:02:13,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-11-22 20:02:13,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-11-22 20:02:13,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 48 states have (on average 1.0833333333333333) internal successors, (52), 50 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:02:13,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2021-11-22 20:02:13,532 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 25 [2021-11-22 20:02:13,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:02:13,532 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2021-11-22 20:02:13,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:02:13,533 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2021-11-22 20:02:13,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-22 20:02:13,533 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:02:13,533 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:02:13,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 20:02:13,534 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 20:02:13,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:02:13,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1892036256, now seen corresponding path program 1 times [2021-11-22 20:02:13,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:02:13,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828497998] [2021-11-22 20:02:13,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:02:13,535 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:02:13,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:02:13,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:02:13,763 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:02:13,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828497998] [2021-11-22 20:02:13,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828497998] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:02:13,764 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:02:13,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-22 20:02:13,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165543281] [2021-11-22 20:02:13,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:02:13,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-22 20:02:13,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:02:13,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-22 20:02:13,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-22 20:02:13,767 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:02:13,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:02:13,929 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2021-11-22 20:02:13,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-22 20:02:13,930 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-11-22 20:02:13,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:02:13,932 INFO L225 Difference]: With dead ends: 69 [2021-11-22 20:02:13,932 INFO L226 Difference]: Without dead ends: 51 [2021-11-22 20:02:13,933 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2021-11-22 20:02:13,937 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 165 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 20:02:13,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [165 Valid, 160 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 20:02:13,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-11-22 20:02:13,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-11-22 20:02:13,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 48 states have (on average 1.0625) internal successors, (51), 50 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:02:13,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2021-11-22 20:02:13,954 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 26 [2021-11-22 20:02:13,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:02:13,955 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2021-11-22 20:02:13,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:02:13,955 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2021-11-22 20:02:13,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-22 20:02:13,956 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:02:13,956 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:02:13,956 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 20:02:13,956 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 20:02:13,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:02:13,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1472602148, now seen corresponding path program 1 times [2021-11-22 20:02:13,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:02:13,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867725809] [2021-11-22 20:02:13,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:02:13,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:02:14,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:02:14,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:02:14,197 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:02:14,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867725809] [2021-11-22 20:02:14,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867725809] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:02:14,198 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:02:14,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-22 20:02:14,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342894785] [2021-11-22 20:02:14,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:02:14,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-22 20:02:14,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:02:14,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-22 20:02:14,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-11-22 20:02:14,201 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:02:14,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:02:14,400 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2021-11-22 20:02:14,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-22 20:02:14,401 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-22 20:02:14,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:02:14,402 INFO L225 Difference]: With dead ends: 51 [2021-11-22 20:02:14,402 INFO L226 Difference]: Without dead ends: 49 [2021-11-22 20:02:14,402 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=139, Invalid=323, Unknown=0, NotChecked=0, Total=462 [2021-11-22 20:02:14,403 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 162 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 20:02:14,403 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [162 Valid, 192 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 20:02:14,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-11-22 20:02:14,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2021-11-22 20:02:14,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 47 states have (on average 1.0425531914893618) internal successors, (49), 48 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:02:14,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2021-11-22 20:02:14,407 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 27 [2021-11-22 20:02:14,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:02:14,407 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2021-11-22 20:02:14,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:02:14,407 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2021-11-22 20:02:14,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-22 20:02:14,408 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:02:14,408 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:02:14,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-22 20:02:14,408 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 20:02:14,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:02:14,409 INFO L85 PathProgramCache]: Analyzing trace with hash -788472151, now seen corresponding path program 1 times [2021-11-22 20:02:14,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:02:14,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675372459] [2021-11-22 20:02:14,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:02:14,409 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:02:14,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:02:14,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:02:14,654 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:02:14,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675372459] [2021-11-22 20:02:14,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675372459] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:02:14,657 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:02:14,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-22 20:02:14,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504258897] [2021-11-22 20:02:14,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:02:14,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-22 20:02:14,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:02:14,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-22 20:02:14,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-22 20:02:14,659 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:02:14,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:02:14,772 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2021-11-22 20:02:14,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-22 20:02:14,773 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-22 20:02:14,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:02:14,774 INFO L225 Difference]: With dead ends: 49 [2021-11-22 20:02:14,774 INFO L226 Difference]: Without dead ends: 47 [2021-11-22 20:02:14,774 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2021-11-22 20:02:14,776 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 140 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 20:02:14,778 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 147 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 20:02:14,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-11-22 20:02:14,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2021-11-22 20:02:14,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.0217391304347827) internal successors, (47), 46 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:02:14,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2021-11-22 20:02:14,788 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 31 [2021-11-22 20:02:14,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:02:14,788 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2021-11-22 20:02:14,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:02:14,789 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2021-11-22 20:02:14,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-22 20:02:14,791 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:02:14,791 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:02:14,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-22 20:02:14,792 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 20:02:14,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:02:14,793 INFO L85 PathProgramCache]: Analyzing trace with hash 804942063, now seen corresponding path program 1 times [2021-11-22 20:02:14,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:02:14,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944055936] [2021-11-22 20:02:14,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:02:14,794 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:02:14,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:02:15,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:02:15,181 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:02:15,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944055936] [2021-11-22 20:02:15,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944055936] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:02:15,181 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:02:15,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-22 20:02:15,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475361326] [2021-11-22 20:02:15,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:02:15,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-22 20:02:15,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:02:15,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-22 20:02:15,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-22 20:02:15,183 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:02:15,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:02:15,305 INFO L93 Difference]: Finished difference Result 72 states and 71 transitions. [2021-11-22 20:02:15,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-22 20:02:15,306 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-11-22 20:02:15,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:02:15,306 INFO L225 Difference]: With dead ends: 72 [2021-11-22 20:02:15,306 INFO L226 Difference]: Without dead ends: 47 [2021-11-22 20:02:15,307 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2021-11-22 20:02:15,307 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 222 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 20:02:15,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [222 Valid, 198 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 20:02:15,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-11-22 20:02:15,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2021-11-22 20:02:15,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.0) internal successors, (46), 46 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:02:15,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 46 transitions. [2021-11-22 20:02:15,311 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 46 transitions. Word has length 37 [2021-11-22 20:02:15,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:02:15,311 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 46 transitions. [2021-11-22 20:02:15,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:02:15,311 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 46 transitions. [2021-11-22 20:02:15,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-22 20:02:15,312 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:02:15,312 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:02:15,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-22 20:02:15,312 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 20:02:15,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:02:15,313 INFO L85 PathProgramCache]: Analyzing trace with hash 991678944, now seen corresponding path program 1 times [2021-11-22 20:02:15,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:02:15,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526141016] [2021-11-22 20:02:15,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:02:15,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:02:15,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 20:02:15,462 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-22 20:02:15,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 20:02:15,632 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-22 20:02:15,633 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-22 20:02:15,633 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2021-11-22 20:02:15,635 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2021-11-22 20:02:15,635 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2021-11-22 20:02:15,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-22 20:02:15,637 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2021-11-22 20:02:15,639 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-22 20:02:15,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 08:02:15 BoogieIcfgContainer [2021-11-22 20:02:15,680 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-22 20:02:15,681 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-22 20:02:15,681 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-22 20:02:15,681 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-22 20:02:15,681 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 08:02:13" (3/4) ... [2021-11-22 20:02:15,683 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-22 20:02:15,683 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-22 20:02:15,683 INFO L158 Benchmark]: Toolchain (without parser) took 5897.03ms. Allocated memory was 132.1MB in the beginning and 295.7MB in the end (delta: 163.6MB). Free memory was 85.3MB in the beginning and 219.1MB in the end (delta: -133.7MB). Peak memory consumption was 30.6MB. Max. memory is 16.1GB. [2021-11-22 20:02:15,684 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 132.1MB. Free memory was 103.8MB in the beginning and 103.8MB in the end (delta: 25.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 20:02:15,684 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2411.23ms. Allocated memory was 132.1MB in the beginning and 172.0MB in the end (delta: 39.8MB). Free memory was 85.1MB in the beginning and 72.0MB in the end (delta: 13.1MB). Peak memory consumption was 89.7MB. Max. memory is 16.1GB. [2021-11-22 20:02:15,684 INFO L158 Benchmark]: Boogie Procedure Inliner took 178.10ms. Allocated memory is still 172.0MB. Free memory was 72.0MB in the beginning and 109.5MB in the end (delta: -37.5MB). Peak memory consumption was 19.0MB. Max. memory is 16.1GB. [2021-11-22 20:02:15,684 INFO L158 Benchmark]: Boogie Preprocessor took 71.55ms. Allocated memory is still 172.0MB. Free memory was 109.5MB in the beginning and 105.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-22 20:02:15,685 INFO L158 Benchmark]: RCFGBuilder took 623.04ms. Allocated memory is still 172.0MB. Free memory was 105.3MB in the beginning and 75.0MB in the end (delta: 30.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2021-11-22 20:02:15,685 INFO L158 Benchmark]: TraceAbstraction took 2604.74ms. Allocated memory was 172.0MB in the beginning and 295.7MB in the end (delta: 123.7MB). Free memory was 75.0MB in the beginning and 220.1MB in the end (delta: -145.2MB). Peak memory consumption was 89.4MB. Max. memory is 16.1GB. [2021-11-22 20:02:15,685 INFO L158 Benchmark]: Witness Printer took 2.54ms. Allocated memory is still 295.7MB. Free memory is still 219.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 20:02:15,686 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 132.1MB. Free memory was 103.8MB in the beginning and 103.8MB in the end (delta: 25.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2411.23ms. Allocated memory was 132.1MB in the beginning and 172.0MB in the end (delta: 39.8MB). Free memory was 85.1MB in the beginning and 72.0MB in the end (delta: 13.1MB). Peak memory consumption was 89.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 178.10ms. Allocated memory is still 172.0MB. Free memory was 72.0MB in the beginning and 109.5MB in the end (delta: -37.5MB). Peak memory consumption was 19.0MB. Max. memory is 16.1GB. * Boogie Preprocessor took 71.55ms. Allocated memory is still 172.0MB. Free memory was 109.5MB in the beginning and 105.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 623.04ms. Allocated memory is still 172.0MB. Free memory was 105.3MB in the beginning and 75.0MB in the end (delta: 30.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * TraceAbstraction took 2604.74ms. Allocated memory was 172.0MB in the beginning and 295.7MB in the end (delta: 123.7MB). Free memory was 75.0MB in the beginning and 220.1MB in the end (delta: -145.2MB). Peak memory consumption was 89.4MB. Max. memory is 16.1GB. * Witness Printer took 2.54ms. Allocated memory is still 295.7MB. Free memory is still 219.1MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 223]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of strcmp at line 10798, overapproximation of strlen at line 11324. Possible FailurePath: [L6879-L6884] static struct aws_allocator s_can_fail_allocator_static = { .mem_acquire = s_can_fail_malloc_allocator, .mem_release = s_can_fail_free_allocator, .mem_realloc = s_can_fail_realloc_allocator, .mem_calloc = s_can_fail_calloc_allocator, }; [L7634-L7646] static const uint8_t s_tolower_table[256] = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', 91, 92, 93, 94, 95, 96, 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', 123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143, 144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159, 160, 161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175, 176, 177, 178, 179, 180, 181, 182, 183, 184, 185, 186, 187, 188, 189, 190, 191, 192, 193, 194, 195, 196, 197, 198, 199, 200, 201, 202, 203, 204, 205, 206, 207, 208, 209, 210, 211, 212, 213, 214, 215, 216, 217, 218, 219, 220, 221, 222, 223, 224, 225, 226, 227, 228, 229, 230, 231, 232, 233, 234, 235, 236, 237, 238, 239, 240, 241, 242, 243, 244, 245, 246, 247, 248, 249, 250, 251, 252, 253, 254, 255}; VAL [s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L11328] CALL aws_hash_callback_c_str_eq_harness() [L11318] CALL, EXPR ensure_c_str_is_allocated(64) [L6832] CALL, EXPR nondet_uint64_t() [L266] return __VERIFIER_nondet_ulong(); [L6832] RET, EXPR nondet_uint64_t() [L6832] size_t cap = nondet_uint64_t(); [L6833] CALL assume_abort_if_not(cap > 0 && cap <= max_size) [L211] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L6833] RET assume_abort_if_not(cap > 0 && cap <= max_size) [L6834] CALL, EXPR bounded_malloc(cap) [L6896-L6898] CALL assume_abort_if_not(size <= ( (18446744073709551615UL) >> (8 + 1))) [L211] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L6896-L6898] RET assume_abort_if_not(size <= ( (18446744073709551615UL) >> (8 + 1))) [L6899] return malloc(size); [L6834] RET, EXPR bounded_malloc(cap) [L6834] const char *str = bounded_malloc(cap); [L6838] EXPR str[cap - 1] [L6838] CALL assume_abort_if_not(str[cap - 1] == 0) [L211] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L6838] RET assume_abort_if_not(str[cap - 1] == 0) [L6839] return str; VAL [\old(max_size)=64, \result={-2:0}, cap=1, max_size=64, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}, str={-2:0}] [L11318] RET, EXPR ensure_c_str_is_allocated(64) [L11318] const char *str1 = ensure_c_str_is_allocated(64); [L11319] CALL, EXPR nondet_bool() [L261] return __VERIFIER_nondet_bool(); [L11319] RET, EXPR nondet_bool() [L11319] EXPR nondet_bool() ? str1 : ensure_c_str_is_allocated(64) [L11319] CALL, EXPR ensure_c_str_is_allocated(64) [L6832] CALL, EXPR nondet_uint64_t() [L266] return __VERIFIER_nondet_ulong(); [L6832] RET, EXPR nondet_uint64_t() [L6832] size_t cap = nondet_uint64_t(); [L6833] CALL assume_abort_if_not(cap > 0 && cap <= max_size) [L211] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L6833] RET assume_abort_if_not(cap > 0 && cap <= max_size) [L6834] CALL, EXPR bounded_malloc(cap) [L6896-L6898] CALL assume_abort_if_not(size <= ( (18446744073709551615UL) >> (8 + 1))) [L211] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L6896-L6898] RET assume_abort_if_not(size <= ( (18446744073709551615UL) >> (8 + 1))) [L6899] return malloc(size); [L6834] RET, EXPR bounded_malloc(cap) [L6834] const char *str = bounded_malloc(cap); [L6838] EXPR str[cap - 1] [L6838] CALL assume_abort_if_not(str[cap - 1] == 0) [L211] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L6838] RET assume_abort_if_not(str[cap - 1] == 0) [L6839] return str; VAL [\old(max_size)=64, \result={-3:0}, cap=1, max_size=64, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}, str={-3:0}] [L11319] RET, EXPR ensure_c_str_is_allocated(64) [L11319] EXPR nondet_bool() ? str1 : ensure_c_str_is_allocated(64) VAL [ensure_c_str_is_allocated(64)={-3:0}, nondet_bool()=0, nondet_bool() ? str1 : ensure_c_str_is_allocated(64)={-3:0}, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}, str1={-2:0}] [L11319] const char *str2 = nondet_bool() ? str1 : ensure_c_str_is_allocated(64); [L11322] CALL, EXPR aws_hash_callback_c_str_eq(str1, str2) [L10794] CALL, EXPR aws_c_string_is_valid(a) [L6272] return str && ((((1)) == 0) || ((str))); VAL [\result=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}, str={-2:0}, str={-2:0}] [L10794] RET, EXPR aws_c_string_is_valid(a) [L10794] CALL assume_abort_if_not((aws_c_string_is_valid(a))) [L211] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L10794] RET assume_abort_if_not((aws_c_string_is_valid(a))) [L10795] CALL, EXPR aws_c_string_is_valid(b) [L6272] return str && ((((1)) == 0) || ((str))); VAL [\result=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}, str={-3:0}, str={-3:0}] [L10795] RET, EXPR aws_c_string_is_valid(b) [L10795] CALL assume_abort_if_not((aws_c_string_is_valid(b))) [L211] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L10795] RET assume_abort_if_not((aws_c_string_is_valid(b))) [L10797-L10798] _Bool rval = !strcmp(a, b); [L10799] CALL, EXPR aws_c_string_is_valid(a) [L6272] return str && ((((1)) == 0) || ((str))); VAL [\result=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}, str={-2:0}, str={-2:0}] [L10799] RET, EXPR aws_c_string_is_valid(a) [L10799] EXPR aws_c_string_is_valid(a) && aws_c_string_is_valid(b) [L10799] CALL, EXPR aws_c_string_is_valid(b) [L6272] return str && ((((1)) == 0) || ((str))); VAL [\result=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}, str={-3:0}, str={-3:0}] [L10799] RET, EXPR aws_c_string_is_valid(b) [L10799] EXPR aws_c_string_is_valid(a) && aws_c_string_is_valid(b) VAL [a={-2:0}, a={-2:0}, aws_c_string_is_valid(a)=1, aws_c_string_is_valid(a) && aws_c_string_is_valid(b)=1, aws_c_string_is_valid(b)=1, b={-3:0}, b={-3:0}, rval=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L10799] CALL __VERIFIER_assert((aws_c_string_is_valid(a) && aws_c_string_is_valid(b))) [L223] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L10799] RET __VERIFIER_assert((aws_c_string_is_valid(a) && aws_c_string_is_valid(b))) [L10799] return rval; VAL [\result=1, a={-2:0}, a={-2:0}, b={-3:0}, b={-3:0}, rval=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L11322] RET, EXPR aws_hash_callback_c_str_eq(str1, str2) [L11321-L11322] _Bool rval = aws_hash_callback_c_str_eq(str1, str2); [L11323] COND TRUE \read(rval) [L11324] size_t len = strlen(str1); [L11325] CALL assert_bytes_match(str1, str2, len) [L7113] CALL __VERIFIER_assert(!a == !b) [L223] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L7113] RET __VERIFIER_assert(!a == !b) [L7114-L7117] COND TRUE len > 0 && a != ((void *)0) && b != ((void *)0) [L7119] CALL, EXPR nondet_uint64_t() [L266] return __VERIFIER_nondet_ulong(); [L7119] RET, EXPR nondet_uint64_t() [L7119] size_t i = nondet_uint64_t(); [L7120-L7122] CALL assume_abort_if_not(i < len && len < ( (18446744073709551615UL) >> (8 + 1))) [L211] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L7120-L7122] RET assume_abort_if_not(i < len && len < ( (18446744073709551615UL) >> (8 + 1))) [L7123] EXPR a[i] [L7123] EXPR b[i] [L7123] CALL __VERIFIER_assert(a[i] == b[i]) [L223] COND TRUE !cond VAL [\old(cond)=0, cond=0, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L223] reach_error() VAL [\old(cond)=0, cond=0, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] - UnprovableResult [Line: 223]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 223]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 57 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 2.5s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 689 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 689 mSDsluCounter, 757 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 554 mSDsCounter, 59 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 258 IncrementalHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 59 mSolverCounterUnsat, 203 mSDtfsCounter, 258 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 78 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=57occurred in iteration=0, InterpolantAutomatonStates: 54, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 192 NumberOfCodeBlocks, 192 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 141 ConstructedInterpolants, 0 QuantifiedInterpolants, 623 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-22 20:02:15,726 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_hash_callback_c_str_eq_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.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 e2319232de809c5fc7a2ae9b5bcaacd5710dfa5ecc8cc9afebba783e154bd6e0 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-fcb8e13 [2021-11-22 20:02:17,484 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 20:02:17,486 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 20:02:17,524 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 20:02:17,525 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 20:02:17,527 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 20:02:17,528 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 20:02:17,532 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 20:02:17,534 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 20:02:17,537 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 20:02:17,538 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 20:02:17,539 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 20:02:17,539 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 20:02:17,541 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 20:02:17,542 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 20:02:17,547 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 20:02:17,547 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 20:02:17,548 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 20:02:17,549 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 20:02:17,554 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 20:02:17,555 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 20:02:17,556 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 20:02:17,557 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 20:02:17,558 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 20:02:17,561 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 20:02:17,561 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 20:02:17,561 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 20:02:17,562 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 20:02:17,563 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 20:02:17,563 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 20:02:17,563 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 20:02:17,564 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 20:02:17,565 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 20:02:17,565 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 20:02:17,566 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 20:02:17,566 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 20:02:17,567 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 20:02:17,567 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 20:02:17,567 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 20:02:17,568 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 20:02:17,569 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 20:02:17,572 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2021-11-22 20:02:17,602 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 20:02:17,602 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 20:02:17,602 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 20:02:17,603 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 20:02:17,603 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 20:02:17,604 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 20:02:17,604 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 20:02:17,604 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 20:02:17,605 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 20:02:17,605 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 20:02:17,605 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 20:02:17,606 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 20:02:17,606 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-22 20:02:17,606 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-22 20:02:17,606 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-22 20:02:17,606 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 20:02:17,606 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 20:02:17,606 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 20:02:17,606 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 20:02:17,607 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 20:02:17,607 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 20:02:17,607 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 20:02:17,607 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 20:02:17,607 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 20:02:17,607 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 20:02:17,607 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-22 20:02:17,608 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-22 20:02:17,608 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 20:02:17,608 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 20:02:17,608 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 20:02:17,608 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 20:02:17,608 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-22 20:02:17,608 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e2319232de809c5fc7a2ae9b5bcaacd5710dfa5ecc8cc9afebba783e154bd6e0 [2021-11-22 20:02:17,869 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 20:02:17,894 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 20:02:17,896 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 20:02:17,896 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 20:02:17,897 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 20:02:17,899 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_hash_callback_c_str_eq_harness.i [2021-11-22 20:02:17,957 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43114bd96/d7bbbb08da7c4909bc77cc9c5322df76/FLAGc8815a209 [2021-11-22 20:02:18,617 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 20:02:18,618 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_callback_c_str_eq_harness.i [2021-11-22 20:02:18,651 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43114bd96/d7bbbb08da7c4909bc77cc9c5322df76/FLAGc8815a209 [2021-11-22 20:02:18,987 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43114bd96/d7bbbb08da7c4909bc77cc9c5322df76 [2021-11-22 20:02:18,989 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 20:02:18,990 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 20:02:18,992 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 20:02:18,993 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 20:02:18,995 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 20:02:18,996 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 08:02:18" (1/1) ... [2021-11-22 20:02:18,996 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f505e22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:02:18, skipping insertion in model container [2021-11-22 20:02:18,997 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 08:02:18" (1/1) ... [2021-11-22 20:02:19,001 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 20:02:19,098 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 20:02:19,364 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_hash_callback_c_str_eq_harness.i[4500,4513] [2021-11-22 20:02:19,370 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_hash_callback_c_str_eq_harness.i[4560,4573] [2021-11-22 20:02:20,160 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:20,161 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:20,161 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:20,162 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:20,162 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:20,170 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:20,171 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:20,172 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:20,172 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:20,471 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-22 20:02:20,472 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-22 20:02:20,473 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-22 20:02:20,474 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-22 20:02:20,478 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-22 20:02:20,482 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-22 20:02:20,483 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-22 20:02:20,485 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-22 20:02:20,486 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-22 20:02:20,487 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-22 20:02:20,632 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-22 20:02:20,726 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:20,726 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:20,943 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:20,945 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:20,959 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:20,960 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:20,964 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:20,965 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:20,988 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:20,988 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:20,989 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:20,990 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:20,990 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:20,990 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:20,991 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:21,030 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 20:02:21,094 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-22 20:02:21,153 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 20:02:21,156 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_hash_callback_c_str_eq_harness.i[4500,4513] [2021-11-22 20:02:21,157 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_hash_callback_c_str_eq_harness.i[4560,4573] [2021-11-22 20:02:21,190 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:21,190 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:21,190 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:21,191 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:21,191 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:21,194 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:21,195 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:21,195 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:21,195 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:21,210 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-22 20:02:21,211 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-22 20:02:21,211 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-22 20:02:21,211 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-22 20:02:21,231 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-22 20:02:21,232 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-22 20:02:21,232 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-22 20:02:21,232 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-22 20:02:21,233 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-22 20:02:21,233 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-22 20:02:21,243 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-22 20:02:21,267 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:21,267 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:21,307 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:21,308 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:21,311 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:21,312 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:21,313 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:21,313 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:21,345 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:21,346 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:21,346 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:21,347 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:21,347 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:21,347 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:21,348 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:21,373 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 20:02:21,392 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 20:02:21,407 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_hash_callback_c_str_eq_harness.i[4500,4513] [2021-11-22 20:02:21,408 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_hash_callback_c_str_eq_harness.i[4560,4573] [2021-11-22 20:02:21,432 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:21,432 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:21,433 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:21,433 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:21,433 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:21,436 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:21,436 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:21,437 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:21,437 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:21,452 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-22 20:02:21,452 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-22 20:02:21,453 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-22 20:02:21,453 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-22 20:02:21,454 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-22 20:02:21,454 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-22 20:02:21,455 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-22 20:02:21,455 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-22 20:02:21,455 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-22 20:02:21,456 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-22 20:02:21,470 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-22 20:02:21,534 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:21,534 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:21,571 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:21,572 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:21,576 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:21,576 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:21,578 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:21,578 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:21,595 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:21,595 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:21,596 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:21,596 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:21,597 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:21,597 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:21,597 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:02:21,615 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 20:02:21,772 INFO L208 MainTranslator]: Completed translation [2021-11-22 20:02:21,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:02:21 WrapperNode [2021-11-22 20:02:21,773 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 20:02:21,773 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 20:02:21,774 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 20:02:21,774 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 20:02:21,778 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:02:21" (1/1) ... [2021-11-22 20:02:21,860 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:02:21" (1/1) ... [2021-11-22 20:02:21,895 INFO L137 Inliner]: procedures = 788, calls = 3253, calls flagged for inlining = 1227, calls inlined = 29, statements flattened = 439 [2021-11-22 20:02:21,896 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 20:02:21,896 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 20:02:21,896 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 20:02:21,896 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 20:02:21,902 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:02:21" (1/1) ... [2021-11-22 20:02:21,903 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:02:21" (1/1) ... [2021-11-22 20:02:21,908 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:02:21" (1/1) ... [2021-11-22 20:02:21,909 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:02:21" (1/1) ... [2021-11-22 20:02:21,932 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:02:21" (1/1) ... [2021-11-22 20:02:21,936 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:02:21" (1/1) ... [2021-11-22 20:02:21,940 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:02:21" (1/1) ... [2021-11-22 20:02:21,953 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 20:02:21,967 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 20:02:21,968 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 20:02:21,968 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 20:02:21,969 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:02:21" (1/1) ... [2021-11-22 20:02:21,973 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 20:02:21,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:02:21,990 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) [2021-11-22 20:02:22,006 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 [2021-11-22 20:02:22,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-22 20:02:22,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 20:02:22,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 20:02:22,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 20:02:22,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-22 20:02:22,019 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-22 20:02:22,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-22 20:02:22,212 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 20:02:22,213 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 20:02:22,490 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##29: assume !true; [2021-11-22 20:02:22,490 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 20:02:22,494 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 20:02:22,495 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-22 20:02:22,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 08:02:22 BoogieIcfgContainer [2021-11-22 20:02:22,496 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 20:02:22,497 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 20:02:22,497 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 20:02:22,499 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 20:02:22,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 08:02:18" (1/3) ... [2021-11-22 20:02:22,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@706563f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 08:02:22, skipping insertion in model container [2021-11-22 20:02:22,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:02:21" (2/3) ... [2021-11-22 20:02:22,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@706563f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 08:02:22, skipping insertion in model container [2021-11-22 20:02:22,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 08:02:22" (3/3) ... [2021-11-22 20:02:22,501 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_callback_c_str_eq_harness.i [2021-11-22 20:02:22,504 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 20:02:22,505 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-22 20:02:22,533 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 20:02:22,537 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 [2021-11-22 20:02:22,537 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-22 20:02:22,545 INFO L276 IsEmpty]: Start isEmpty. Operand has 57 states, 53 states have (on average 1.3773584905660377) internal successors, (73), 56 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:02:22,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-22 20:02:22,549 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:02:22,549 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:02:22,550 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 20:02:22,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:02:22,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1599795525, now seen corresponding path program 1 times [2021-11-22 20:02:22,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 20:02:22,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1632440405] [2021-11-22 20:02:22,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:02:22,565 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 20:02:22,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-22 20:02:22,567 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 20:02:22,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-22 20:02:22,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:02:22,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-22 20:02:22,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:02:22,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:02:22,812 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 20:02:22,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:02:22,842 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 20:02:22,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1632440405] [2021-11-22 20:02:22,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1632440405] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 20:02:22,843 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:02:22,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-22 20:02:22,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268094438] [2021-11-22 20:02:22,845 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 20:02:22,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-22 20:02:22,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 20:02:22,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-22 20:02:22,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 20:02:22,866 INFO L87 Difference]: Start difference. First operand has 57 states, 53 states have (on average 1.3773584905660377) internal successors, (73), 56 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:02:22,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:02:22,879 INFO L93 Difference]: Finished difference Result 110 states and 141 transitions. [2021-11-22 20:02:22,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 20:02:22,881 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-11-22 20:02:22,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:02:22,885 INFO L225 Difference]: With dead ends: 110 [2021-11-22 20:02:22,886 INFO L226 Difference]: Without dead ends: 51 [2021-11-22 20:02:22,888 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 20:02:22,889 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 20:02:22,890 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 20:02:22,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-11-22 20:02:22,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-11-22 20:02:22,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 48 states have (on average 1.0833333333333333) internal successors, (52), 50 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:02:22,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2021-11-22 20:02:22,912 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 25 [2021-11-22 20:02:22,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:02:22,912 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2021-11-22 20:02:22,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:02:22,913 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2021-11-22 20:02:22,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-22 20:02:22,913 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:02:22,914 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:02:22,928 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-22 20:02:23,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-22 20:02:23,124 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 20:02:23,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:02:23,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1892036256, now seen corresponding path program 1 times [2021-11-22 20:02:23,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 20:02:23,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1993858544] [2021-11-22 20:02:23,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:02:23,126 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 20:02:23,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-22 20:02:23,128 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 20:02:23,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-22 20:02:23,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:02:23,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-22 20:02:23,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:02:23,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:02:23,481 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 20:02:23,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:02:23,534 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 20:02:23,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1993858544] [2021-11-22 20:02:23,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1993858544] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 20:02:23,535 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:02:23,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 10 [2021-11-22 20:02:23,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5193813] [2021-11-22 20:02:23,535 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 20:02:23,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-22 20:02:23,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 20:02:23,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-22 20:02:23,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-11-22 20:02:23,537 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:02:23,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:02:23,731 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2021-11-22 20:02:23,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-22 20:02:23,732 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-11-22 20:02:23,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:02:23,732 INFO L225 Difference]: With dead ends: 69 [2021-11-22 20:02:23,733 INFO L226 Difference]: Without dead ends: 51 [2021-11-22 20:02:23,733 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2021-11-22 20:02:23,734 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 165 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 20:02:23,734 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [165 Valid, 194 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 20:02:23,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-11-22 20:02:23,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-11-22 20:02:23,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 48 states have (on average 1.0625) internal successors, (51), 50 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:02:23,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2021-11-22 20:02:23,739 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 26 [2021-11-22 20:02:23,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:02:23,739 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2021-11-22 20:02:23,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:02:23,739 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2021-11-22 20:02:23,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-22 20:02:23,740 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:02:23,740 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:02:23,752 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-22 20:02:23,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-22 20:02:23,941 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 20:02:23,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:02:23,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1472602148, now seen corresponding path program 1 times [2021-11-22 20:02:23,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 20:02:23,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2004889551] [2021-11-22 20:02:23,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:02:23,942 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 20:02:23,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-22 20:02:23,944 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 20:02:23,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-22 20:02:24,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:02:24,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-22 20:02:24,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:02:24,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:02:24,238 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 20:02:24,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:02:24,336 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 20:02:24,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2004889551] [2021-11-22 20:02:24,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2004889551] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 20:02:24,337 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:02:24,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 11] imperfect sequences [] total 13 [2021-11-22 20:02:24,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279380395] [2021-11-22 20:02:24,337 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 20:02:24,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-22 20:02:24,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 20:02:24,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-22 20:02:24,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-11-22 20:02:24,338 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:02:24,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:02:24,668 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2021-11-22 20:02:24,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-22 20:02:24,669 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-22 20:02:24,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:02:24,669 INFO L225 Difference]: With dead ends: 51 [2021-11-22 20:02:24,669 INFO L226 Difference]: Without dead ends: 49 [2021-11-22 20:02:24,670 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=170, Invalid=430, Unknown=0, NotChecked=0, Total=600 [2021-11-22 20:02:24,670 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 185 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 20:02:24,671 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [185 Valid, 215 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 20:02:24,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-11-22 20:02:24,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2021-11-22 20:02:24,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 47 states have (on average 1.0425531914893618) internal successors, (49), 48 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:02:24,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2021-11-22 20:02:24,675 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 27 [2021-11-22 20:02:24,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:02:24,675 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2021-11-22 20:02:24,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:02:24,675 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2021-11-22 20:02:24,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-22 20:02:24,676 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:02:24,676 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:02:24,705 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-22 20:02:24,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-22 20:02:24,877 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 20:02:24,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:02:24,877 INFO L85 PathProgramCache]: Analyzing trace with hash -788472151, now seen corresponding path program 1 times [2021-11-22 20:02:24,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 20:02:24,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1955128986] [2021-11-22 20:02:24,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:02:24,878 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 20:02:24,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-22 20:02:24,879 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 20:02:24,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-22 20:02:25,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:02:25,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-22 20:02:25,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:02:25,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:02:25,241 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 20:02:25,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:02:25,384 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 20:02:25,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1955128986] [2021-11-22 20:02:25,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1955128986] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 20:02:25,384 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:02:25,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 12 [2021-11-22 20:02:25,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757622314] [2021-11-22 20:02:25,385 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 20:02:25,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-22 20:02:25,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 20:02:25,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-22 20:02:25,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-11-22 20:02:25,386 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:02:25,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:02:25,660 INFO L93 Difference]: Finished difference Result 74 states and 74 transitions. [2021-11-22 20:02:25,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-22 20:02:25,661 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-22 20:02:25,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:02:25,662 INFO L225 Difference]: With dead ends: 74 [2021-11-22 20:02:25,662 INFO L226 Difference]: Without dead ends: 72 [2021-11-22 20:02:25,662 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=178, Invalid=422, Unknown=0, NotChecked=0, Total=600 [2021-11-22 20:02:25,663 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 232 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 20:02:25,663 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [232 Valid, 210 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 20:02:25,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-11-22 20:02:25,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 47. [2021-11-22 20:02:25,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.0217391304347827) internal successors, (47), 46 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:02:25,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2021-11-22 20:02:25,667 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 31 [2021-11-22 20:02:25,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:02:25,668 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2021-11-22 20:02:25,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:02:25,668 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2021-11-22 20:02:25,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-22 20:02:25,669 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:02:25,669 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:02:25,681 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-11-22 20:02:25,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-22 20:02:25,876 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 20:02:25,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:02:25,877 INFO L85 PathProgramCache]: Analyzing trace with hash 804942063, now seen corresponding path program 1 times [2021-11-22 20:02:25,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 20:02:25,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [313929635] [2021-11-22 20:02:25,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:02:25,877 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 20:02:25,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-22 20:02:25,881 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 20:02:25,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-22 20:02:26,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:02:26,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-22 20:02:26,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:02:26,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:02:26,250 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 20:02:26,285 INFO L354 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2021-11-22 20:02:26,285 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 17 treesize of output 13 [2021-11-22 20:02:26,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:02:26,399 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 20:02:26,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [313929635] [2021-11-22 20:02:26,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [313929635] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 20:02:26,399 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:02:26,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 7 [2021-11-22 20:02:26,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55132418] [2021-11-22 20:02:26,399 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 20:02:26,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 20:02:26,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 20:02:26,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 20:02:26,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-22 20:02:26,400 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:02:26,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:02:26,479 INFO L93 Difference]: Finished difference Result 72 states and 71 transitions. [2021-11-22 20:02:26,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 20:02:26,480 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-11-22 20:02:26,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:02:26,480 INFO L225 Difference]: With dead ends: 72 [2021-11-22 20:02:26,480 INFO L226 Difference]: Without dead ends: 47 [2021-11-22 20:02:26,481 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-22 20:02:26,481 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 23 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 20:02:26,481 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 205 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 20:02:26,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-11-22 20:02:26,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2021-11-22 20:02:26,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.0) internal successors, (46), 46 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:02:26,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 46 transitions. [2021-11-22 20:02:26,485 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 46 transitions. Word has length 37 [2021-11-22 20:02:26,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:02:26,485 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 46 transitions. [2021-11-22 20:02:26,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:02:26,485 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 46 transitions. [2021-11-22 20:02:26,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-22 20:02:26,486 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:02:26,486 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:02:26,500 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-22 20:02:26,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-22 20:02:26,700 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 20:02:26,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:02:26,701 INFO L85 PathProgramCache]: Analyzing trace with hash 991678944, now seen corresponding path program 1 times [2021-11-22 20:02:26,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 20:02:26,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [255505208] [2021-11-22 20:02:26,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:02:26,701 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 20:02:26,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-22 20:02:26,702 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 20:02:26,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-22 20:02:27,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 20:02:27,201 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-22 20:02:27,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 20:02:27,699 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-11-22 20:02:27,699 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-22 20:02:27,700 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2021-11-22 20:02:27,701 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2021-11-22 20:02:27,701 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2021-11-22 20:02:27,720 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-22 20:02:27,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-22 20:02:27,904 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2021-11-22 20:02:27,906 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-22 20:02:27,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 08:02:27 BoogieIcfgContainer [2021-11-22 20:02:27,972 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-22 20:02:27,973 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-22 20:02:27,973 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-22 20:02:27,973 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-22 20:02:27,973 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 08:02:22" (3/4) ... [2021-11-22 20:02:27,975 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-22 20:02:27,975 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-22 20:02:27,983 INFO L158 Benchmark]: Toolchain (without parser) took 8993.17ms. Allocated memory was 65.0MB in the beginning and 316.7MB in the end (delta: 251.7MB). Free memory was 34.2MB in the beginning and 165.3MB in the end (delta: -131.2MB). Peak memory consumption was 120.2MB. Max. memory is 16.1GB. [2021-11-22 20:02:27,984 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 65.0MB. Free memory was 47.3MB in the beginning and 47.3MB in the end (delta: 49.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 20:02:27,984 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2780.51ms. Allocated memory was 65.0MB in the beginning and 218.1MB in the end (delta: 153.1MB). Free memory was 33.9MB in the beginning and 111.1MB in the end (delta: -77.3MB). Peak memory consumption was 96.8MB. Max. memory is 16.1GB. [2021-11-22 20:02:27,984 INFO L158 Benchmark]: Boogie Procedure Inliner took 122.39ms. Allocated memory is still 218.1MB. Free memory was 111.1MB in the beginning and 99.6MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-22 20:02:27,984 INFO L158 Benchmark]: Boogie Preprocessor took 70.57ms. Allocated memory is still 218.1MB. Free memory was 99.6MB in the beginning and 94.4MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-22 20:02:27,985 INFO L158 Benchmark]: RCFGBuilder took 528.62ms. Allocated memory is still 218.1MB. Free memory was 94.4MB in the beginning and 117.6MB in the end (delta: -23.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-22 20:02:27,985 INFO L158 Benchmark]: TraceAbstraction took 5475.37ms. Allocated memory was 218.1MB in the beginning and 316.7MB in the end (delta: 98.6MB). Free memory was 116.5MB in the beginning and 166.4MB in the end (delta: -49.8MB). Peak memory consumption was 49.8MB. Max. memory is 16.1GB. [2021-11-22 20:02:27,985 INFO L158 Benchmark]: Witness Printer took 2.47ms. Allocated memory is still 316.7MB. Free memory was 166.4MB in the beginning and 165.3MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 20:02:27,987 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 65.0MB. Free memory was 47.3MB in the beginning and 47.3MB in the end (delta: 49.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2780.51ms. Allocated memory was 65.0MB in the beginning and 218.1MB in the end (delta: 153.1MB). Free memory was 33.9MB in the beginning and 111.1MB in the end (delta: -77.3MB). Peak memory consumption was 96.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 122.39ms. Allocated memory is still 218.1MB. Free memory was 111.1MB in the beginning and 99.6MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 70.57ms. Allocated memory is still 218.1MB. Free memory was 99.6MB in the beginning and 94.4MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 528.62ms. Allocated memory is still 218.1MB. Free memory was 94.4MB in the beginning and 117.6MB in the end (delta: -23.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 5475.37ms. Allocated memory was 218.1MB in the beginning and 316.7MB in the end (delta: 98.6MB). Free memory was 116.5MB in the beginning and 166.4MB in the end (delta: -49.8MB). Peak memory consumption was 49.8MB. Max. memory is 16.1GB. * Witness Printer took 2.47ms. Allocated memory is still 316.7MB. Free memory was 166.4MB in the beginning and 165.3MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 223]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of strcmp at line 10798, overapproximation of strlen at line 11324. Possible FailurePath: [L6879-L6884] static struct aws_allocator s_can_fail_allocator_static = { .mem_acquire = s_can_fail_malloc_allocator, .mem_release = s_can_fail_free_allocator, .mem_realloc = s_can_fail_realloc_allocator, .mem_calloc = s_can_fail_calloc_allocator, }; [L7634-L7646] static const uint8_t s_tolower_table[256] = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', 91, 92, 93, 94, 95, 96, 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', 123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143, 144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159, 160, 161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175, 176, 177, 178, 179, 180, 181, 182, 183, 184, 185, 186, 187, 188, 189, 190, 191, 192, 193, 194, 195, 196, 197, 198, 199, 200, 201, 202, 203, 204, 205, 206, 207, 208, 209, 210, 211, 212, 213, 214, 215, 216, 217, 218, 219, 220, 221, 222, 223, 224, 225, 226, 227, 228, 229, 230, 231, 232, 233, 234, 235, 236, 237, 238, 239, 240, 241, 242, 243, 244, 245, 246, 247, 248, 249, 250, 251, 252, 253, 254, 255}; VAL [s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L11328] CALL aws_hash_callback_c_str_eq_harness() [L11318] CALL, EXPR ensure_c_str_is_allocated(64) [L6832] CALL, EXPR nondet_uint64_t() [L266] return __VERIFIER_nondet_ulong(); [L6832] RET, EXPR nondet_uint64_t() [L6832] size_t cap = nondet_uint64_t(); [L6833] CALL assume_abort_if_not(cap > 0 && cap <= max_size) [L211] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L6833] RET assume_abort_if_not(cap > 0 && cap <= max_size) [L6834] CALL, EXPR bounded_malloc(cap) [L6896-L6898] CALL assume_abort_if_not(size <= ( (18446744073709551615UL) >> (8 + 1))) [L211] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L6896-L6898] RET assume_abort_if_not(size <= ( (18446744073709551615UL) >> (8 + 1))) [L6899] return malloc(size); [L6834] RET, EXPR bounded_malloc(cap) [L6834] const char *str = bounded_malloc(cap); [L6838] EXPR str[cap - 1] [L6838] CALL assume_abort_if_not(str[cap - 1] == 0) [L211] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L6838] RET assume_abort_if_not(str[cap - 1] == 0) [L6839] return str; VAL [\old(max_size)=64, \result={14:0}, cap=64, max_size=64, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}, str={14:0}] [L11318] RET, EXPR ensure_c_str_is_allocated(64) [L11318] const char *str1 = ensure_c_str_is_allocated(64); [L11319] CALL, EXPR nondet_bool() [L261] return __VERIFIER_nondet_bool(); [L11319] RET, EXPR nondet_bool() [L11319] EXPR nondet_bool() ? str1 : ensure_c_str_is_allocated(64) [L11319] CALL, EXPR ensure_c_str_is_allocated(64) [L6832] CALL, EXPR nondet_uint64_t() [L266] return __VERIFIER_nondet_ulong(); [L6832] RET, EXPR nondet_uint64_t() [L6832] size_t cap = nondet_uint64_t(); [L6833] CALL assume_abort_if_not(cap > 0 && cap <= max_size) [L211] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L6833] RET assume_abort_if_not(cap > 0 && cap <= max_size) [L6834] CALL, EXPR bounded_malloc(cap) [L6896-L6898] CALL assume_abort_if_not(size <= ( (18446744073709551615UL) >> (8 + 1))) [L211] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L6896-L6898] RET assume_abort_if_not(size <= ( (18446744073709551615UL) >> (8 + 1))) [L6899] return malloc(size); [L6834] RET, EXPR bounded_malloc(cap) [L6834] const char *str = bounded_malloc(cap); [L6838] EXPR str[cap - 1] [L6838] CALL assume_abort_if_not(str[cap - 1] == 0) [L211] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L6838] RET assume_abort_if_not(str[cap - 1] == 0) [L6839] return str; VAL [\old(max_size)=64, \result={9:0}, cap=64, max_size=64, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}, str={9:0}] [L11319] RET, EXPR ensure_c_str_is_allocated(64) [L11319] EXPR nondet_bool() ? str1 : ensure_c_str_is_allocated(64) VAL [ensure_c_str_is_allocated(64)={9:0}, nondet_bool()=0, nondet_bool() ? str1 : ensure_c_str_is_allocated(64)={9:0}, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}, str1={14:0}] [L11319] const char *str2 = nondet_bool() ? str1 : ensure_c_str_is_allocated(64); [L11322] CALL, EXPR aws_hash_callback_c_str_eq(str1, str2) [L10794] CALL, EXPR aws_c_string_is_valid(a) [L6272] return str && ((((1)) == 0) || ((str))); VAL [\result=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}, str={14:0}, str={14:0}] [L10794] RET, EXPR aws_c_string_is_valid(a) [L10794] CALL assume_abort_if_not((aws_c_string_is_valid(a))) [L211] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L10794] RET assume_abort_if_not((aws_c_string_is_valid(a))) [L10795] CALL, EXPR aws_c_string_is_valid(b) [L6272] return str && ((((1)) == 0) || ((str))); VAL [\result=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}, str={9:0}, str={9:0}] [L10795] RET, EXPR aws_c_string_is_valid(b) [L10795] CALL assume_abort_if_not((aws_c_string_is_valid(b))) [L211] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L10795] RET assume_abort_if_not((aws_c_string_is_valid(b))) [L10797-L10798] _Bool rval = !strcmp(a, b); [L10799] CALL, EXPR aws_c_string_is_valid(a) [L6272] return str && ((((1)) == 0) || ((str))); VAL [\result=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}, str={14:0}, str={14:0}] [L10799] RET, EXPR aws_c_string_is_valid(a) [L10799] EXPR aws_c_string_is_valid(a) && aws_c_string_is_valid(b) [L10799] CALL, EXPR aws_c_string_is_valid(b) [L6272] return str && ((((1)) == 0) || ((str))); VAL [\result=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}, str={9:0}, str={9:0}] [L10799] RET, EXPR aws_c_string_is_valid(b) [L10799] EXPR aws_c_string_is_valid(a) && aws_c_string_is_valid(b) VAL [a={14:0}, a={14:0}, aws_c_string_is_valid(a)=1, aws_c_string_is_valid(a) && aws_c_string_is_valid(b)=1, aws_c_string_is_valid(b)=1, b={9:0}, b={9:0}, rval=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L10799] CALL __VERIFIER_assert((aws_c_string_is_valid(a) && aws_c_string_is_valid(b))) [L223] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L10799] RET __VERIFIER_assert((aws_c_string_is_valid(a) && aws_c_string_is_valid(b))) [L10799] return rval; VAL [\result=1, a={14:0}, a={14:0}, b={9:0}, b={9:0}, rval=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L11322] RET, EXPR aws_hash_callback_c_str_eq(str1, str2) [L11321-L11322] _Bool rval = aws_hash_callback_c_str_eq(str1, str2); [L11323] COND TRUE \read(rval) [L11324] size_t len = strlen(str1); [L11325] CALL assert_bytes_match(str1, str2, len) [L7113] CALL __VERIFIER_assert(!a == !b) [L223] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L7113] RET __VERIFIER_assert(!a == !b) [L7114-L7117] COND TRUE len > 0 && a != ((void *)0) && b != ((void *)0) [L7119] CALL, EXPR nondet_uint64_t() [L266] return __VERIFIER_nondet_ulong(); [L7119] RET, EXPR nondet_uint64_t() [L7119] size_t i = nondet_uint64_t(); [L7120-L7122] CALL assume_abort_if_not(i < len && len < ( (18446744073709551615UL) >> (8 + 1))) [L211] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L7120-L7122] RET assume_abort_if_not(i < len && len < ( (18446744073709551615UL) >> (8 + 1))) [L7123] EXPR a[i] [L7123] EXPR b[i] [L7123] CALL __VERIFIER_assert(a[i] == b[i]) [L223] COND TRUE !cond VAL [\old(cond)=0, cond=0, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L223] reach_error() VAL [\old(cond)=0, cond=0, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] - UnprovableResult [Line: 223]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 223]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 57 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 5.4s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 605 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 605 mSDsluCounter, 884 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 674 mSDsCounter, 74 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 275 IncrementalHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 74 mSolverCounterUnsat, 210 mSDtfsCounter, 275 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 318 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=57occurred in iteration=0, InterpolantAutomatonStates: 55, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 25 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 192 NumberOfCodeBlocks, 192 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 282 ConstructedInterpolants, 0 QuantifiedInterpolants, 1027 SizeOfPredicates, 58 NumberOfNonLiveVariables, 1899 ConjunctsInSsa, 61 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-22 20:02:28,040 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample