./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b 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_table_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 66d360c8c29bda7e5219dac4b14837aec8d465009822b05f671b68702d836670 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 17:05:13,440 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 17:05:13,464 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 17:05:13,497 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 17:05:13,497 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 17:05:13,500 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 17:05:13,501 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 17:05:13,503 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 17:05:13,504 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 17:05:13,507 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 17:05:13,507 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 17:05:13,508 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 17:05:13,509 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 17:05:13,510 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 17:05:13,511 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 17:05:13,515 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 17:05:13,516 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 17:05:13,516 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 17:05:13,518 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 17:05:13,522 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 17:05:13,523 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 17:05:13,524 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 17:05:13,525 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 17:05:13,525 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 17:05:13,530 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 17:05:13,530 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 17:05:13,530 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 17:05:13,531 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 17:05:13,531 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 17:05:13,532 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 17:05:13,532 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 17:05:13,533 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 17:05:13,534 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 17:05:13,535 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 17:05:13,535 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 17:05:13,536 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 17:05:13,536 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 17:05:13,536 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 17:05:13,536 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 17:05:13,537 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 17:05:13,538 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 17:05:13,539 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-14 17:05:13,562 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 17:05:13,563 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 17:05:13,563 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 17:05:13,563 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 17:05:13,564 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 17:05:13,564 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 17:05:13,565 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 17:05:13,565 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 17:05:13,565 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 17:05:13,565 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 17:05:13,566 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 17:05:13,566 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 17:05:13,566 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 17:05:13,566 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 17:05:13,566 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 17:05:13,566 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 17:05:13,566 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 17:05:13,567 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 17:05:13,567 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 17:05:13,567 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 17:05:13,567 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 17:05:13,567 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:05:13,567 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 17:05:13,568 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 17:05:13,568 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 17:05:13,568 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 17:05:13,568 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 17:05:13,568 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 17:05:13,568 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 17:05:13,568 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 17:05:13,569 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 17:05:13,569 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 66d360c8c29bda7e5219dac4b14837aec8d465009822b05f671b68702d836670 [2021-12-14 17:05:13,733 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 17:05:13,754 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 17:05:13,756 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 17:05:13,757 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 17:05:13,759 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 17:05:13,760 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness.i [2021-12-14 17:05:13,815 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e403d203f/05c75997d1db46de8669ec725695b922/FLAGdd23d08b5 [2021-12-14 17:05:14,368 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 17:05:14,368 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness.i [2021-12-14 17:05:14,395 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e403d203f/05c75997d1db46de8669ec725695b922/FLAGdd23d08b5 [2021-12-14 17:05:14,543 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e403d203f/05c75997d1db46de8669ec725695b922 [2021-12-14 17:05:14,545 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 17:05:14,546 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 17:05:14,547 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 17:05:14,548 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 17:05:14,550 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 17:05:14,550 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:05:14" (1/1) ... [2021-12-14 17:05:14,552 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@239aff06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:05:14, skipping insertion in model container [2021-12-14 17:05:14,552 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:05:14" (1/1) ... [2021-12-14 17:05:14,556 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 17:05:14,643 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 17:05:14,835 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_table_eq_harness.i[4491,4504] [2021-12-14 17:05:14,841 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_table_eq_harness.i[4551,4564] [2021-12-14 17:05:15,429 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:15,429 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:15,430 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:15,431 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:15,432 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:15,439 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:15,440 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:15,441 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:15,441 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:15,442 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:15,443 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:15,444 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:15,444 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:15,674 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-14 17:05:15,675 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-14 17:05:15,675 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-14 17:05:15,676 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-14 17:05:15,677 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-14 17:05:15,678 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-14 17:05:15,678 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-14 17:05:15,678 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-14 17:05:15,679 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-14 17:05:15,679 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-14 17:05:15,799 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-14 17:05:16,053 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:16,054 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:16,076 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:16,077 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:16,083 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:16,083 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:16,098 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:16,099 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:16,100 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:16,100 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:16,100 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:16,101 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:16,101 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:16,134 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:05:16,165 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 17:05:16,182 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_table_eq_harness.i[4491,4504] [2021-12-14 17:05:16,183 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_table_eq_harness.i[4551,4564] [2021-12-14 17:05:16,215 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:16,216 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:16,216 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:16,216 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:16,217 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:16,221 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:16,222 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:16,223 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:16,223 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:16,225 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:16,226 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:16,226 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:16,226 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:16,244 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-14 17:05:16,244 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-14 17:05:16,245 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-14 17:05:16,245 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-14 17:05:16,246 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-14 17:05:16,246 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-14 17:05:16,246 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-14 17:05:16,246 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-14 17:05:16,247 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-14 17:05:16,247 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-14 17:05:16,266 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-14 17:05:16,331 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:16,332 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:16,336 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:16,336 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:16,338 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:16,338 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:16,384 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:16,388 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:16,389 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:16,389 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:16,389 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:16,390 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:16,390 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:16,402 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:05:16,571 INFO L208 MainTranslator]: Completed translation [2021-12-14 17:05:16,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:05:16 WrapperNode [2021-12-14 17:05:16,572 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 17:05:16,573 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 17:05:16,573 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 17:05:16,573 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 17:05:16,578 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:05:16" (1/1) ... [2021-12-14 17:05:16,656 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:05:16" (1/1) ... [2021-12-14 17:05:16,726 INFO L137 Inliner]: procedures = 774, calls = 2455, calls flagged for inlining = 68, calls inlined = 18, statements flattened = 945 [2021-12-14 17:05:16,727 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 17:05:16,728 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 17:05:16,728 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 17:05:16,728 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 17:05:16,734 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:05:16" (1/1) ... [2021-12-14 17:05:16,735 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:05:16" (1/1) ... [2021-12-14 17:05:16,745 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:05:16" (1/1) ... [2021-12-14 17:05:16,746 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:05:16" (1/1) ... [2021-12-14 17:05:16,802 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:05:16" (1/1) ... [2021-12-14 17:05:16,822 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:05:16" (1/1) ... [2021-12-14 17:05:16,829 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:05:16" (1/1) ... [2021-12-14 17:05:16,838 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 17:05:16,838 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 17:05:16,839 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 17:05:16,839 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 17:05:16,840 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:05:16" (1/1) ... [2021-12-14 17:05:16,845 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:05:16,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:05:16,865 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-14 17:05:16,894 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-12-14 17:05:16,894 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_hash_table [2021-12-14 17:05:16,894 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_hash_table [2021-12-14 17:05:16,894 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-14 17:05:16,894 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-12-14 17:05:16,894 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-12-14 17:05:16,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-14 17:05:16,895 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-14 17:05:16,899 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-14 17:05:16,899 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2021-12-14 17:05:16,899 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2021-12-14 17:05:16,900 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-14 17:05:16,900 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 17:05:16,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-14 17:05:16,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 17:05:16,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 17:05:16,900 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-14 17:05:16,900 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-14 17:05:16,901 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-12-14 17:05:16,901 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-12-14 17:05:16,901 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 17:05:16,901 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2021-12-14 17:05:16,901 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2021-12-14 17:05:16,901 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-14 17:05:16,901 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-12-14 17:05:16,901 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-12-14 17:05:16,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-14 17:05:16,902 INFO L130 BoogieDeclarations]: Found specification of procedure s_hash_for [2021-12-14 17:05:16,902 INFO L138 BoogieDeclarations]: Found implementation of procedure s_hash_for [2021-12-14 17:05:16,902 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2021-12-14 17:05:16,902 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2021-12-14 17:05:16,902 INFO L130 BoogieDeclarations]: Found specification of procedure s_hash_keys_eq [2021-12-14 17:05:16,903 INFO L138 BoogieDeclarations]: Found implementation of procedure s_hash_keys_eq [2021-12-14 17:05:16,903 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_equals [2021-12-14 17:05:16,903 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_equals [2021-12-14 17:05:16,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 17:05:16,903 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_get_entry_count [2021-12-14 17:05:16,903 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_get_entry_count [2021-12-14 17:05:16,903 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2021-12-14 17:05:16,904 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2021-12-14 17:05:16,904 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_hasher [2021-12-14 17:05:16,904 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_hasher [2021-12-14 17:05:16,904 INFO L130 BoogieDeclarations]: Found specification of procedure s_safe_eq_check [2021-12-14 17:05:16,905 INFO L138 BoogieDeclarations]: Found implementation of procedure s_safe_eq_check [2021-12-14 17:05:16,907 INFO L130 BoogieDeclarations]: Found specification of procedure s_find_entry [2021-12-14 17:05:16,907 INFO L138 BoogieDeclarations]: Found implementation of procedure s_find_entry [2021-12-14 17:05:16,907 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-14 17:05:16,907 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-14 17:05:16,908 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2021-12-14 17:05:16,908 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2021-12-14 17:05:16,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-14 17:05:16,908 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_allocated_hash_table [2021-12-14 17:05:16,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_allocated_hash_table [2021-12-14 17:05:16,913 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-12-14 17:05:16,913 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-12-14 17:05:16,913 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2021-12-14 17:05:16,913 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2021-12-14 17:05:16,913 INFO L130 BoogieDeclarations]: Found specification of procedure check_hash_table_unchanged [2021-12-14 17:05:16,913 INFO L138 BoogieDeclarations]: Found implementation of procedure check_hash_table_unchanged [2021-12-14 17:05:16,913 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-14 17:05:16,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-14 17:05:16,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 17:05:17,286 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 17:05:17,287 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 17:05:17,385 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume !true; [2021-12-14 17:05:17,428 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !true; [2021-12-14 17:05:17,932 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##39: assume !true; [2021-12-14 17:05:17,933 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##28: assume !true; [2021-12-14 17:05:17,933 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !true; [2021-12-14 17:05:17,933 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##60: assume !true; [2021-12-14 17:05:17,933 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##51: assume !true; [2021-12-14 17:05:17,953 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 17:05:17,964 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 17:05:17,964 INFO L301 CfgBuilder]: Removed 16 assume(true) statements. [2021-12-14 17:05:17,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:05:17 BoogieIcfgContainer [2021-12-14 17:05:17,966 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 17:05:17,968 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 17:05:17,968 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 17:05:17,970 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 17:05:17,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:05:14" (1/3) ... [2021-12-14 17:05:17,971 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@394fdaf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:05:17, skipping insertion in model container [2021-12-14 17:05:17,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:05:16" (2/3) ... [2021-12-14 17:05:17,972 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@394fdaf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:05:17, skipping insertion in model container [2021-12-14 17:05:17,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:05:17" (3/3) ... [2021-12-14 17:05:17,973 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_table_eq_harness.i [2021-12-14 17:05:17,981 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 17:05:17,981 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 17:05:18,021 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 17:05:18,036 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-14 17:05:18,037 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 17:05:18,057 INFO L276 IsEmpty]: Start isEmpty. Operand has 291 states, 183 states have (on average 1.2185792349726776) internal successors, (223), 177 states have internal predecessors, (223), 89 states have call successors, (89), 24 states have call predecessors, (89), 24 states have return successors, (89), 89 states have call predecessors, (89), 89 states have call successors, (89) [2021-12-14 17:05:18,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2021-12-14 17:05:18,069 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:05:18,070 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:05:18,071 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:05:18,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:05:18,074 INFO L85 PathProgramCache]: Analyzing trace with hash 2061328642, now seen corresponding path program 1 times [2021-12-14 17:05:18,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:05:18,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539764488] [2021-12-14 17:05:18,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:05:18,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:05:18,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:18,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:05:18,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:18,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:05:18,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:18,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:05:18,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:18,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-14 17:05:18,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:18,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-14 17:05:18,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:18,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-14 17:05:18,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-14 17:05:18,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 17:05:18,554 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig$NestedTraceCheckException: UNKNOWN during nested interpolation. I don't know how to continue at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:396) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:229) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck$TraceCheckLock@faa599d at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.lockAndPrepareSolverForTraceCheck(TraceCheck.java:493) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.checkTrace(TraceCheck.java:294) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.(TraceCheck.java:211) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:91) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:89) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:379) ... 31 more [2021-12-14 17:05:18,559 INFO L158 Benchmark]: Toolchain (without parser) took 4011.48ms. Allocated memory was 111.1MB in the beginning and 260.0MB in the end (delta: 148.9MB). Free memory was 74.3MB in the beginning and 182.2MB in the end (delta: -108.0MB). Peak memory consumption was 39.6MB. Max. memory is 16.1GB. [2021-12-14 17:05:18,559 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 111.1MB. Free memory was 68.9MB in the beginning and 68.9MB in the end (delta: 51.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 17:05:18,561 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2024.80ms. Allocated memory was 111.1MB in the beginning and 165.7MB in the end (delta: 54.5MB). Free memory was 74.0MB in the beginning and 73.2MB in the end (delta: 878.1kB). Peak memory consumption was 88.1MB. Max. memory is 16.1GB. [2021-12-14 17:05:18,563 INFO L158 Benchmark]: Boogie Procedure Inliner took 154.31ms. Allocated memory is still 165.7MB. Free memory was 73.2MB in the beginning and 61.5MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-14 17:05:18,563 INFO L158 Benchmark]: Boogie Preprocessor took 110.00ms. Allocated memory was 165.7MB in the beginning and 260.0MB in the end (delta: 94.4MB). Free memory was 61.5MB in the beginning and 197.8MB in the end (delta: -136.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-14 17:05:18,564 INFO L158 Benchmark]: RCFGBuilder took 1128.07ms. Allocated memory is still 260.0MB. Free memory was 197.8MB in the beginning and 168.2MB in the end (delta: 29.6MB). Peak memory consumption was 82.0MB. Max. memory is 16.1GB. [2021-12-14 17:05:18,564 INFO L158 Benchmark]: TraceAbstraction took 589.00ms. Allocated memory is still 260.0MB. Free memory was 167.2MB in the beginning and 182.2MB in the end (delta: -15.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 17:05:18,567 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 111.1MB. Free memory was 68.9MB in the beginning and 68.9MB in the end (delta: 51.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2024.80ms. Allocated memory was 111.1MB in the beginning and 165.7MB in the end (delta: 54.5MB). Free memory was 74.0MB in the beginning and 73.2MB in the end (delta: 878.1kB). Peak memory consumption was 88.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 154.31ms. Allocated memory is still 165.7MB. Free memory was 73.2MB in the beginning and 61.5MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 110.00ms. Allocated memory was 165.7MB in the beginning and 260.0MB in the end (delta: 94.4MB). Free memory was 61.5MB in the beginning and 197.8MB in the end (delta: -136.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1128.07ms. Allocated memory is still 260.0MB. Free memory was 197.8MB in the beginning and 168.2MB in the end (delta: 29.6MB). Peak memory consumption was 82.0MB. Max. memory is 16.1GB. * TraceAbstraction took 589.00ms. Allocated memory is still 260.0MB. Free memory was 167.2MB in the beginning and 182.2MB in the end (delta: -15.1MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NestedTraceCheckException: UNKNOWN during nested interpolation. I don't know how to continue de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NestedTraceCheckException: UNKNOWN during nested interpolation. I don't know how to continue: de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:396) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-14 17:05:18,605 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_table_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 66d360c8c29bda7e5219dac4b14837aec8d465009822b05f671b68702d836670 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 17:05:20,180 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 17:05:20,183 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 17:05:20,226 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 17:05:20,226 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 17:05:20,229 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 17:05:20,230 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 17:05:20,234 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 17:05:20,236 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 17:05:20,240 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 17:05:20,241 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 17:05:20,244 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 17:05:20,244 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 17:05:20,245 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 17:05:20,247 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 17:05:20,248 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 17:05:20,250 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 17:05:20,251 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 17:05:20,253 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 17:05:20,255 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 17:05:20,257 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 17:05:20,258 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 17:05:20,259 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 17:05:20,261 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 17:05:20,266 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 17:05:20,267 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 17:05:20,268 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 17:05:20,268 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 17:05:20,269 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 17:05:20,270 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 17:05:20,270 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 17:05:20,271 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 17:05:20,272 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 17:05:20,272 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 17:05:20,273 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 17:05:20,273 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 17:05:20,274 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 17:05:20,274 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 17:05:20,274 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 17:05:20,275 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 17:05:20,276 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 17:05:20,276 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2021-12-14 17:05:20,304 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 17:05:20,304 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 17:05:20,305 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 17:05:20,305 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 17:05:20,306 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 17:05:20,306 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 17:05:20,307 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 17:05:20,307 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 17:05:20,308 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 17:05:20,308 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 17:05:20,308 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 17:05:20,309 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 17:05:20,309 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 17:05:20,309 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 17:05:20,309 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-14 17:05:20,309 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-14 17:05:20,309 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-14 17:05:20,310 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 17:05:20,310 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 17:05:20,310 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 17:05:20,310 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 17:05:20,310 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 17:05:20,310 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 17:05:20,311 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:05:20,311 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 17:05:20,311 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 17:05:20,311 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 17:05:20,311 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-14 17:05:20,311 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-14 17:05:20,311 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 17:05:20,312 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 17:05:20,312 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 17:05:20,312 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 17:05:20,312 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-14 17:05:20,312 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 66d360c8c29bda7e5219dac4b14837aec8d465009822b05f671b68702d836670 [2021-12-14 17:05:20,602 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 17:05:20,624 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 17:05:20,626 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 17:05:20,628 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 17:05:20,629 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 17:05:20,630 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness.i [2021-12-14 17:05:20,678 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e72434f6b/6c76f6427a684105b56aa913432930fd/FLAG0afa8fdee [2021-12-14 17:05:21,260 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 17:05:21,261 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness.i [2021-12-14 17:05:21,293 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e72434f6b/6c76f6427a684105b56aa913432930fd/FLAG0afa8fdee [2021-12-14 17:05:21,425 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e72434f6b/6c76f6427a684105b56aa913432930fd [2021-12-14 17:05:21,428 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 17:05:21,429 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 17:05:21,431 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 17:05:21,431 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 17:05:21,434 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 17:05:21,435 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:05:21" (1/1) ... [2021-12-14 17:05:21,436 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f22357c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:05:21, skipping insertion in model container [2021-12-14 17:05:21,436 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:05:21" (1/1) ... [2021-12-14 17:05:21,441 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 17:05:21,524 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 17:05:21,779 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_table_eq_harness.i[4491,4504] [2021-12-14 17:05:21,785 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_table_eq_harness.i[4551,4564] [2021-12-14 17:05:22,395 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:22,395 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:22,396 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:22,396 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:22,397 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:22,405 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:22,406 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:22,407 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:22,407 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:22,408 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:22,409 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:22,410 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:22,412 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:22,678 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-14 17:05:22,679 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-14 17:05:22,680 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-14 17:05:22,681 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-14 17:05:22,681 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-14 17:05:22,682 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-14 17:05:22,682 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-14 17:05:22,682 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-14 17:05:22,683 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-14 17:05:22,683 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-14 17:05:22,787 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-14 17:05:22,980 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:22,980 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:22,996 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:22,996 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,010 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,016 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,033 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,034 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,034 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,034 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,035 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,035 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,035 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,063 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:05:23,085 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-12-14 17:05:23,112 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 17:05:23,117 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_table_eq_harness.i[4491,4504] [2021-12-14 17:05:23,118 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_table_eq_harness.i[4551,4564] [2021-12-14 17:05:23,157 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,157 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,158 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,158 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,158 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,163 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,163 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,164 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,164 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,167 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,168 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,168 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,168 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,194 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-14 17:05:23,195 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-14 17:05:23,196 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-14 17:05:23,197 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-14 17:05:23,198 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-14 17:05:23,198 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-14 17:05:23,198 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-14 17:05:23,199 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-14 17:05:23,199 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-14 17:05:23,199 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-14 17:05:23,225 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-14 17:05:23,308 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,309 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,325 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,326 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,328 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,328 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,336 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,337 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,337 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,338 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,338 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,338 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,338 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,357 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:05:23,382 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 17:05:23,391 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_table_eq_harness.i[4491,4504] [2021-12-14 17:05:23,392 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_table_eq_harness.i[4551,4564] [2021-12-14 17:05:23,415 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,416 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,416 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,417 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,417 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,420 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,420 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,421 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,422 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,422 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,423 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,423 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,424 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,440 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-14 17:05:23,441 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-14 17:05:23,441 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-14 17:05:23,441 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-14 17:05:23,442 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-14 17:05:23,442 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-14 17:05:23,443 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-14 17:05:23,443 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-14 17:05:23,443 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-14 17:05:23,444 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-14 17:05:23,455 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-14 17:05:23,520 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,521 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,529 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,531 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,533 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,533 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,539 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,540 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,540 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,541 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,541 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,541 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,541 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,558 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:05:23,850 INFO L208 MainTranslator]: Completed translation [2021-12-14 17:05:23,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:05:23 WrapperNode [2021-12-14 17:05:23,850 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 17:05:23,851 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 17:05:23,851 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 17:05:23,852 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 17:05:23,856 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:05:23" (1/1) ... [2021-12-14 17:05:23,952 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:05:23" (1/1) ... [2021-12-14 17:05:24,012 INFO L137 Inliner]: procedures = 794, calls = 2455, calls flagged for inlining = 70, calls inlined = 17, statements flattened = 931 [2021-12-14 17:05:24,013 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 17:05:24,013 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 17:05:24,013 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 17:05:24,013 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 17:05:24,019 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:05:23" (1/1) ... [2021-12-14 17:05:24,019 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:05:23" (1/1) ... [2021-12-14 17:05:24,029 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:05:23" (1/1) ... [2021-12-14 17:05:24,029 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:05:23" (1/1) ... [2021-12-14 17:05:24,068 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:05:23" (1/1) ... [2021-12-14 17:05:24,073 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:05:23" (1/1) ... [2021-12-14 17:05:24,081 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:05:23" (1/1) ... [2021-12-14 17:05:24,091 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 17:05:24,092 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 17:05:24,092 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 17:05:24,092 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 17:05:24,093 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:05:23" (1/1) ... [2021-12-14 17:05:24,097 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:05:24,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:05:24,131 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-14 17:05:24,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-14 17:05:24,161 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-12-14 17:05:24,161 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_hash_table [2021-12-14 17:05:24,161 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_hash_table [2021-12-14 17:05:24,162 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-12-14 17:05:24,162 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-12-14 17:05:24,162 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-14 17:05:24,163 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-14 17:05:24,167 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2021-12-14 17:05:24,167 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2021-12-14 17:05:24,167 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-14 17:05:24,168 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 17:05:24,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-14 17:05:24,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 17:05:24,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 17:05:24,168 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-14 17:05:24,168 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-14 17:05:24,168 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-12-14 17:05:24,168 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-12-14 17:05:24,168 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 17:05:24,168 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2021-12-14 17:05:24,169 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2021-12-14 17:05:24,169 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-14 17:05:24,169 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-12-14 17:05:24,169 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-12-14 17:05:24,169 INFO L130 BoogieDeclarations]: Found specification of procedure s_hash_for [2021-12-14 17:05:24,169 INFO L138 BoogieDeclarations]: Found implementation of procedure s_hash_for [2021-12-14 17:05:24,169 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2021-12-14 17:05:24,169 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2021-12-14 17:05:24,169 INFO L130 BoogieDeclarations]: Found specification of procedure s_hash_keys_eq [2021-12-14 17:05:24,169 INFO L138 BoogieDeclarations]: Found implementation of procedure s_hash_keys_eq [2021-12-14 17:05:24,170 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_equals [2021-12-14 17:05:24,170 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_equals [2021-12-14 17:05:24,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 17:05:24,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-14 17:05:24,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-12-14 17:05:24,171 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_get_entry_count [2021-12-14 17:05:24,171 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_get_entry_count [2021-12-14 17:05:24,171 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2021-12-14 17:05:24,171 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2021-12-14 17:05:24,171 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_hasher [2021-12-14 17:05:24,171 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_hasher [2021-12-14 17:05:24,171 INFO L130 BoogieDeclarations]: Found specification of procedure s_safe_eq_check [2021-12-14 17:05:24,171 INFO L138 BoogieDeclarations]: Found implementation of procedure s_safe_eq_check [2021-12-14 17:05:24,171 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-12-14 17:05:24,172 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-12-14 17:05:24,172 INFO L130 BoogieDeclarations]: Found specification of procedure s_find_entry [2021-12-14 17:05:24,172 INFO L138 BoogieDeclarations]: Found implementation of procedure s_find_entry [2021-12-14 17:05:24,172 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-14 17:05:24,172 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-14 17:05:24,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-12-14 17:05:24,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-12-14 17:05:24,172 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2021-12-14 17:05:24,172 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2021-12-14 17:05:24,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-14 17:05:24,173 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_allocated_hash_table [2021-12-14 17:05:24,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_allocated_hash_table [2021-12-14 17:05:24,173 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-12-14 17:05:24,173 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-12-14 17:05:24,173 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2021-12-14 17:05:24,173 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2021-12-14 17:05:24,173 INFO L130 BoogieDeclarations]: Found specification of procedure check_hash_table_unchanged [2021-12-14 17:05:24,173 INFO L138 BoogieDeclarations]: Found implementation of procedure check_hash_table_unchanged [2021-12-14 17:05:24,466 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 17:05:24,467 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 17:05:24,581 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume !true; [2021-12-14 17:05:24,780 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !true; [2021-12-14 17:05:26,027 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##39: assume !true; [2021-12-14 17:05:26,027 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##28: assume !true; [2021-12-14 17:05:26,028 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !true; [2021-12-14 17:05:26,028 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##60: assume !true; [2021-12-14 17:05:26,028 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##51: assume !true; [2021-12-14 17:05:26,041 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 17:05:26,046 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 17:05:26,047 INFO L301 CfgBuilder]: Removed 16 assume(true) statements. [2021-12-14 17:05:26,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:05:26 BoogieIcfgContainer [2021-12-14 17:05:26,048 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 17:05:26,049 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 17:05:26,049 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 17:05:26,051 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 17:05:26,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:05:21" (1/3) ... [2021-12-14 17:05:26,052 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1de23695 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:05:26, skipping insertion in model container [2021-12-14 17:05:26,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:05:23" (2/3) ... [2021-12-14 17:05:26,052 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1de23695 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:05:26, skipping insertion in model container [2021-12-14 17:05:26,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:05:26" (3/3) ... [2021-12-14 17:05:26,053 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_table_eq_harness.i [2021-12-14 17:05:26,057 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 17:05:26,057 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 17:05:26,086 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 17:05:26,090 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-14 17:05:26,091 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 17:05:26,105 INFO L276 IsEmpty]: Start isEmpty. Operand has 276 states, 172 states have (on average 1.2267441860465116) internal successors, (211), 166 states have internal predecessors, (211), 86 states have call successors, (86), 23 states have call predecessors, (86), 23 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2021-12-14 17:05:26,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2021-12-14 17:05:26,115 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:05:26,116 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:05:26,116 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:05:26,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:05:26,120 INFO L85 PathProgramCache]: Analyzing trace with hash 448295814, now seen corresponding path program 1 times [2021-12-14 17:05:26,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 17:05:26,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [283044727] [2021-12-14 17:05:26,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:05:26,132 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 17:05:26,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 17:05:26,134 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) [2021-12-14 17:05:26,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-14 17:05:27,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:27,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 2155 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-14 17:05:27,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:05:27,745 INFO L134 CoverageAnalysis]: Checked inductivity of 811 backedges. 308 proven. 0 refuted. 0 times theorem prover too weak. 503 trivial. 0 not checked. [2021-12-14 17:05:27,745 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:05:27,746 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 17:05:27,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [283044727] [2021-12-14 17:05:27,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [283044727] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:05:27,747 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:05:27,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-14 17:05:27,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649546538] [2021-12-14 17:05:27,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:05:27,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-14 17:05:27,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 17:05:27,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-14 17:05:27,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-14 17:05:27,772 INFO L87 Difference]: Start difference. First operand has 276 states, 172 states have (on average 1.2267441860465116) internal successors, (211), 166 states have internal predecessors, (211), 86 states have call successors, (86), 23 states have call predecessors, (86), 23 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) Second operand has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-12-14 17:05:27,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:05:27,810 INFO L93 Difference]: Finished difference Result 548 states and 807 transitions. [2021-12-14 17:05:27,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-14 17:05:27,812 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 281 [2021-12-14 17:05:27,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:05:27,820 INFO L225 Difference]: With dead ends: 548 [2021-12-14 17:05:27,820 INFO L226 Difference]: Without dead ends: 270 [2021-12-14 17:05:27,826 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-14 17:05:27,828 INFO L933 BasicCegarLoop]: 370 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, 370 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 [2021-12-14 17:05:27,829 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 17:05:27,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2021-12-14 17:05:27,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 270. [2021-12-14 17:05:27,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 160 states have (on average 1.2125) internal successors, (194), 161 states have internal predecessors, (194), 86 states have call successors, (86), 23 states have call predecessors, (86), 23 states have return successors, (85), 85 states have call predecessors, (85), 85 states have call successors, (85) [2021-12-14 17:05:27,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 365 transitions. [2021-12-14 17:05:27,877 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 365 transitions. Word has length 281 [2021-12-14 17:05:27,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:05:27,878 INFO L470 AbstractCegarLoop]: Abstraction has 270 states and 365 transitions. [2021-12-14 17:05:27,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-12-14 17:05:27,878 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 365 transitions. [2021-12-14 17:05:27,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2021-12-14 17:05:27,882 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:05:27,883 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:05:27,930 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-14 17:05:28,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 17:05:28,111 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:05:28,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:05:28,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1090035532, now seen corresponding path program 1 times [2021-12-14 17:05:28,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 17:05:28,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1743923389] [2021-12-14 17:05:28,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:05:28,114 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 17:05:28,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 17:05:28,117 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) [2021-12-14 17:05:28,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-14 17:05:29,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:29,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 2155 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-14 17:05:29,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:05:29,763 INFO L134 CoverageAnalysis]: Checked inductivity of 811 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 641 trivial. 0 not checked. [2021-12-14 17:05:29,763 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:05:29,763 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 17:05:29,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1743923389] [2021-12-14 17:05:29,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1743923389] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:05:29,763 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:05:29,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 17:05:29,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744388388] [2021-12-14 17:05:29,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:05:29,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 17:05:29,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 17:05:29,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 17:05:29,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:05:29,766 INFO L87 Difference]: Start difference. First operand 270 states and 365 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (39), 3 states have call predecessors, (39), 2 states have call successors, (39) [2021-12-14 17:05:29,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:05:29,824 INFO L93 Difference]: Finished difference Result 541 states and 737 transitions. [2021-12-14 17:05:29,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 17:05:29,825 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (39), 3 states have call predecessors, (39), 2 states have call successors, (39) Word has length 281 [2021-12-14 17:05:29,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:05:29,827 INFO L225 Difference]: With dead ends: 541 [2021-12-14 17:05:29,827 INFO L226 Difference]: Without dead ends: 274 [2021-12-14 17:05:29,829 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 277 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-14 17:05:29,829 INFO L933 BasicCegarLoop]: 363 mSDtfsCounter, 2 mSDsluCounter, 1085 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1448 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 17:05:29,830 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1448 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 17:05:29,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2021-12-14 17:05:29,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 274. [2021-12-14 17:05:29,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 163 states have (on average 1.2085889570552146) internal successors, (197), 164 states have internal predecessors, (197), 86 states have call successors, (86), 23 states have call predecessors, (86), 24 states have return successors, (86), 86 states have call predecessors, (86), 85 states have call successors, (86) [2021-12-14 17:05:29,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 369 transitions. [2021-12-14 17:05:29,859 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 369 transitions. Word has length 281 [2021-12-14 17:05:29,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:05:29,860 INFO L470 AbstractCegarLoop]: Abstraction has 274 states and 369 transitions. [2021-12-14 17:05:29,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (39), 3 states have call predecessors, (39), 2 states have call successors, (39) [2021-12-14 17:05:29,861 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 369 transitions. [2021-12-14 17:05:29,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2021-12-14 17:05:29,863 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:05:29,864 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:05:29,901 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-12-14 17:05:30,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 17:05:30,080 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:05:30,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:05:30,080 INFO L85 PathProgramCache]: Analyzing trace with hash 224607552, now seen corresponding path program 1 times [2021-12-14 17:05:30,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 17:05:30,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [877002024] [2021-12-14 17:05:30,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:05:30,082 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 17:05:30,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 17:05:30,083 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) [2021-12-14 17:05:30,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-14 17:05:30,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:30,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 2075 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-14 17:05:30,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:05:31,379 INFO L134 CoverageAnalysis]: Checked inductivity of 847 backedges. 249 proven. 0 refuted. 0 times theorem prover too weak. 598 trivial. 0 not checked. [2021-12-14 17:05:31,379 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:05:31,379 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 17:05:31,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [877002024] [2021-12-14 17:05:31,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [877002024] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:05:31,379 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:05:31,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 17:05:31,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154720592] [2021-12-14 17:05:31,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:05:31,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 17:05:31,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 17:05:31,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 17:05:31,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 17:05:31,381 INFO L87 Difference]: Start difference. First operand 274 states and 369 transitions. Second operand has 6 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (43), 2 states have call predecessors, (43), 4 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2021-12-14 17:05:31,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:05:31,584 INFO L93 Difference]: Finished difference Result 548 states and 741 transitions. [2021-12-14 17:05:31,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 17:05:31,584 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (43), 2 states have call predecessors, (43), 4 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) Word has length 305 [2021-12-14 17:05:31,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:05:31,587 INFO L225 Difference]: With dead ends: 548 [2021-12-14 17:05:31,587 INFO L226 Difference]: Without dead ends: 276 [2021-12-14 17:05:31,588 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 300 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-14 17:05:31,589 INFO L933 BasicCegarLoop]: 344 mSDtfsCounter, 2 mSDsluCounter, 1328 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1672 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-14 17:05:31,589 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1672 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-14 17:05:31,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2021-12-14 17:05:31,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 276. [2021-12-14 17:05:31,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 164 states have (on average 1.2073170731707317) internal successors, (198), 166 states have internal predecessors, (198), 86 states have call successors, (86), 23 states have call predecessors, (86), 25 states have return successors, (87), 86 states have call predecessors, (87), 85 states have call successors, (87) [2021-12-14 17:05:31,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 371 transitions. [2021-12-14 17:05:31,601 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 371 transitions. Word has length 305 [2021-12-14 17:05:31,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:05:31,601 INFO L470 AbstractCegarLoop]: Abstraction has 276 states and 371 transitions. [2021-12-14 17:05:31,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (43), 2 states have call predecessors, (43), 4 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2021-12-14 17:05:31,601 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 371 transitions. [2021-12-14 17:05:31,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2021-12-14 17:05:31,604 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:05:31,604 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:05:31,640 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-12-14 17:05:31,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 17:05:31,829 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:05:31,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:05:31,829 INFO L85 PathProgramCache]: Analyzing trace with hash 947024628, now seen corresponding path program 1 times [2021-12-14 17:05:31,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 17:05:31,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1693591275] [2021-12-14 17:05:31,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:05:31,831 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 17:05:31,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 17:05:31,832 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) [2021-12-14 17:05:31,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-14 17:05:32,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:32,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 2281 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-14 17:05:32,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:05:33,188 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-14 17:05:34,035 INFO L134 CoverageAnalysis]: Checked inductivity of 828 backedges. 328 proven. 0 refuted. 0 times theorem prover too weak. 500 trivial. 0 not checked. [2021-12-14 17:05:34,035 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:05:34,035 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 17:05:34,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1693591275] [2021-12-14 17:05:34,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1693591275] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:05:34,036 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:05:34,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-14 17:05:34,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333514204] [2021-12-14 17:05:34,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:05:34,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-14 17:05:34,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 17:05:34,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-14 17:05:34,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-12-14 17:05:34,037 INFO L87 Difference]: Start difference. First operand 276 states and 371 transitions. Second operand has 12 states, 11 states have (on average 9.454545454545455) internal successors, (104), 9 states have internal predecessors, (104), 4 states have call successors, (48), 3 states have call predecessors, (48), 5 states have return successors, (47), 5 states have call predecessors, (47), 4 states have call successors, (47) [2021-12-14 17:05:34,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:05:34,834 INFO L93 Difference]: Finished difference Result 560 states and 751 transitions. [2021-12-14 17:05:34,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-14 17:05:34,836 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 9.454545454545455) internal successors, (104), 9 states have internal predecessors, (104), 4 states have call successors, (48), 3 states have call predecessors, (48), 5 states have return successors, (47), 5 states have call predecessors, (47), 4 states have call successors, (47) Word has length 315 [2021-12-14 17:05:34,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:05:34,838 INFO L225 Difference]: With dead ends: 560 [2021-12-14 17:05:34,838 INFO L226 Difference]: Without dead ends: 285 [2021-12-14 17:05:34,839 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 305 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-12-14 17:05:34,840 INFO L933 BasicCegarLoop]: 361 mSDtfsCounter, 17 mSDsluCounter, 1999 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 2360 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 152 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-14 17:05:34,840 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 2360 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 152 Unchecked, 0.7s Time] [2021-12-14 17:05:34,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2021-12-14 17:05:34,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 285. [2021-12-14 17:05:34,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 172 states have (on average 1.2093023255813953) internal successors, (208), 174 states have internal predecessors, (208), 86 states have call successors, (86), 24 states have call predecessors, (86), 26 states have return successors, (88), 86 states have call predecessors, (88), 85 states have call successors, (88) [2021-12-14 17:05:34,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 382 transitions. [2021-12-14 17:05:34,855 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 382 transitions. Word has length 315 [2021-12-14 17:05:34,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:05:34,855 INFO L470 AbstractCegarLoop]: Abstraction has 285 states and 382 transitions. [2021-12-14 17:05:34,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 9.454545454545455) internal successors, (104), 9 states have internal predecessors, (104), 4 states have call successors, (48), 3 states have call predecessors, (48), 5 states have return successors, (47), 5 states have call predecessors, (47), 4 states have call successors, (47) [2021-12-14 17:05:34,855 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 382 transitions. [2021-12-14 17:05:34,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2021-12-14 17:05:34,860 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:05:34,860 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 7, 7, 7, 7, 7, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:05:34,905 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-12-14 17:05:35,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 17:05:35,084 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:05:35,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:05:35,085 INFO L85 PathProgramCache]: Analyzing trace with hash 605345714, now seen corresponding path program 1 times [2021-12-14 17:05:35,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 17:05:35,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [379015565] [2021-12-14 17:05:35,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:05:35,087 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 17:05:35,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 17:05:35,088 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) [2021-12-14 17:05:35,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-14 17:05:36,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:36,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 2278 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-14 17:05:36,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:05:36,673 INFO L134 CoverageAnalysis]: Checked inductivity of 828 backedges. 328 proven. 0 refuted. 0 times theorem prover too weak. 500 trivial. 0 not checked. [2021-12-14 17:05:36,673 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:05:36,673 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 17:05:36,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [379015565] [2021-12-14 17:05:36,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [379015565] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:05:36,674 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:05:36,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 17:05:36,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044028982] [2021-12-14 17:05:36,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:05:36,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 17:05:36,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 17:05:36,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 17:05:36,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:05:36,675 INFO L87 Difference]: Start difference. First operand 285 states and 382 transitions. Second operand has 5 states, 4 states have (on average 26.0) internal successors, (104), 5 states have internal predecessors, (104), 3 states have call successors, (48), 2 states have call predecessors, (48), 3 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) [2021-12-14 17:05:36,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:05:36,829 INFO L93 Difference]: Finished difference Result 564 states and 773 transitions. [2021-12-14 17:05:36,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 17:05:36,830 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 26.0) internal successors, (104), 5 states have internal predecessors, (104), 3 states have call successors, (48), 2 states have call predecessors, (48), 3 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) Word has length 315 [2021-12-14 17:05:36,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:05:36,831 INFO L225 Difference]: With dead ends: 564 [2021-12-14 17:05:36,831 INFO L226 Difference]: Without dead ends: 287 [2021-12-14 17:05:36,832 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 311 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:05:36,833 INFO L933 BasicCegarLoop]: 366 mSDtfsCounter, 61 mSDsluCounter, 612 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 978 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 17:05:36,833 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 978 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 17:05:36,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-12-14 17:05:36,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2021-12-14 17:05:36,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 173 states have (on average 1.2023121387283238) internal successors, (208), 175 states have internal predecessors, (208), 87 states have call successors, (87), 24 states have call predecessors, (87), 26 states have return successors, (103), 87 states have call predecessors, (103), 86 states have call successors, (103) [2021-12-14 17:05:36,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 398 transitions. [2021-12-14 17:05:36,844 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 398 transitions. Word has length 315 [2021-12-14 17:05:36,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:05:36,844 INFO L470 AbstractCegarLoop]: Abstraction has 287 states and 398 transitions. [2021-12-14 17:05:36,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 26.0) internal successors, (104), 5 states have internal predecessors, (104), 3 states have call successors, (48), 2 states have call predecessors, (48), 3 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) [2021-12-14 17:05:36,844 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 398 transitions. [2021-12-14 17:05:36,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2021-12-14 17:05:36,846 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:05:36,846 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 7, 7, 7, 7, 7, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:05:36,883 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-12-14 17:05:37,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 17:05:37,059 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:05:37,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:05:37,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1717919787, now seen corresponding path program 1 times [2021-12-14 17:05:37,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 17:05:37,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1054283217] [2021-12-14 17:05:37,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:05:37,062 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 17:05:37,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 17:05:37,062 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) [2021-12-14 17:05:37,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-12-14 17:05:38,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:38,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 2295 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-14 17:05:38,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:05:38,399 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-14 17:05:39,310 INFO L134 CoverageAnalysis]: Checked inductivity of 828 backedges. 328 proven. 0 refuted. 0 times theorem prover too weak. 500 trivial. 0 not checked. [2021-12-14 17:05:39,311 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:05:39,311 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 17:05:39,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1054283217] [2021-12-14 17:05:39,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1054283217] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:05:39,311 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:05:39,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-14 17:05:39,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865049152] [2021-12-14 17:05:39,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:05:39,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-14 17:05:39,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 17:05:39,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-14 17:05:39,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-12-14 17:05:39,313 INFO L87 Difference]: Start difference. First operand 287 states and 398 transitions. Second operand has 13 states, 11 states have (on average 9.818181818181818) internal successors, (108), 10 states have internal predecessors, (108), 5 states have call successors, (49), 3 states have call predecessors, (49), 6 states have return successors, (48), 6 states have call predecessors, (48), 5 states have call successors, (48) [2021-12-14 17:05:39,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:05:39,714 INFO L93 Difference]: Finished difference Result 575 states and 797 transitions. [2021-12-14 17:05:39,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-14 17:05:39,714 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 9.818181818181818) internal successors, (108), 10 states have internal predecessors, (108), 5 states have call successors, (49), 3 states have call predecessors, (49), 6 states have return successors, (48), 6 states have call predecessors, (48), 5 states have call successors, (48) Word has length 321 [2021-12-14 17:05:39,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:05:39,716 INFO L225 Difference]: With dead ends: 575 [2021-12-14 17:05:39,717 INFO L226 Difference]: Without dead ends: 290 [2021-12-14 17:05:39,718 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 309 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-12-14 17:05:39,718 INFO L933 BasicCegarLoop]: 358 mSDtfsCounter, 9 mSDsluCounter, 1695 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2053 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 141 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-14 17:05:39,718 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 2053 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 141 Unchecked, 0.3s Time] [2021-12-14 17:05:39,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2021-12-14 17:05:39,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 290. [2021-12-14 17:05:39,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 175 states have (on average 1.2) internal successors, (210), 177 states have internal predecessors, (210), 88 states have call successors, (88), 25 states have call predecessors, (88), 26 states have return successors, (104), 87 states have call predecessors, (104), 87 states have call successors, (104) [2021-12-14 17:05:39,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 402 transitions. [2021-12-14 17:05:39,728 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 402 transitions. Word has length 321 [2021-12-14 17:05:39,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:05:39,728 INFO L470 AbstractCegarLoop]: Abstraction has 290 states and 402 transitions. [2021-12-14 17:05:39,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 9.818181818181818) internal successors, (108), 10 states have internal predecessors, (108), 5 states have call successors, (49), 3 states have call predecessors, (49), 6 states have return successors, (48), 6 states have call predecessors, (48), 5 states have call successors, (48) [2021-12-14 17:05:39,729 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 402 transitions. [2021-12-14 17:05:39,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2021-12-14 17:05:39,730 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:05:39,730 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 7, 7, 7, 7, 7, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:05:39,769 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-12-14 17:05:39,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 17:05:39,955 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:05:39,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:05:39,956 INFO L85 PathProgramCache]: Analyzing trace with hash 870325970, now seen corresponding path program 1 times [2021-12-14 17:05:39,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 17:05:39,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1601374809] [2021-12-14 17:05:39,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:05:39,958 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 17:05:39,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 17:05:39,958 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-14 17:05:39,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-12-14 17:05:41,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:41,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 2312 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-14 17:05:41,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:05:41,787 INFO L134 CoverageAnalysis]: Checked inductivity of 834 backedges. 427 proven. 0 refuted. 0 times theorem prover too weak. 407 trivial. 0 not checked. [2021-12-14 17:05:41,787 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:05:41,787 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 17:05:41,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1601374809] [2021-12-14 17:05:41,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1601374809] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:05:41,787 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:05:41,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 17:05:41,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999625368] [2021-12-14 17:05:41,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:05:41,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 17:05:41,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 17:05:41,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 17:05:41,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 17:05:41,789 INFO L87 Difference]: Start difference. First operand 290 states and 402 transitions. Second operand has 6 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 3 states have call successors, (53), 2 states have call predecessors, (53), 4 states have return successors, (52), 3 states have call predecessors, (52), 3 states have call successors, (52) [2021-12-14 17:05:41,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:05:41,987 INFO L93 Difference]: Finished difference Result 567 states and 789 transitions. [2021-12-14 17:05:41,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 17:05:41,988 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 3 states have call successors, (53), 2 states have call predecessors, (53), 4 states have return successors, (52), 3 states have call predecessors, (52), 3 states have call successors, (52) Word has length 326 [2021-12-14 17:05:41,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:05:41,990 INFO L225 Difference]: With dead ends: 567 [2021-12-14 17:05:41,990 INFO L226 Difference]: Without dead ends: 288 [2021-12-14 17:05:41,991 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 321 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-14 17:05:41,991 INFO L933 BasicCegarLoop]: 344 mSDtfsCounter, 2 mSDsluCounter, 1328 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1672 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-14 17:05:41,991 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1672 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-14 17:05:41,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2021-12-14 17:05:41,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 284. [2021-12-14 17:05:41,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 171 states have (on average 1.1929824561403508) internal successors, (204), 172 states have internal predecessors, (204), 88 states have call successors, (88), 25 states have call predecessors, (88), 24 states have return successors, (102), 86 states have call predecessors, (102), 87 states have call successors, (102) [2021-12-14 17:05:42,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 394 transitions. [2021-12-14 17:05:42,005 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 394 transitions. Word has length 326 [2021-12-14 17:05:42,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:05:42,006 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 394 transitions. [2021-12-14 17:05:42,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 3 states have call successors, (53), 2 states have call predecessors, (53), 4 states have return successors, (52), 3 states have call predecessors, (52), 3 states have call successors, (52) [2021-12-14 17:05:42,007 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 394 transitions. [2021-12-14 17:05:42,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2021-12-14 17:05:42,008 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:05:42,009 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 7, 7, 7, 7, 7, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:05:42,056 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-12-14 17:05:42,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 17:05:42,231 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:05:42,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:05:42,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1951086534, now seen corresponding path program 1 times [2021-12-14 17:05:42,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 17:05:42,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [925311445] [2021-12-14 17:05:42,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:05:42,233 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 17:05:42,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 17:05:42,234 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-14 17:05:42,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-12-14 17:05:43,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:44,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 2518 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-14 17:05:44,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:05:44,423 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-14 17:05:45,141 INFO L134 CoverageAnalysis]: Checked inductivity of 883 backedges. 455 proven. 0 refuted. 0 times theorem prover too weak. 428 trivial. 0 not checked. [2021-12-14 17:05:45,141 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:05:45,141 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 17:05:45,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [925311445] [2021-12-14 17:05:45,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [925311445] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:05:45,141 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:05:45,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-14 17:05:45,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592943009] [2021-12-14 17:05:45,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:05:45,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-14 17:05:45,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 17:05:45,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-14 17:05:45,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-12-14 17:05:45,142 INFO L87 Difference]: Start difference. First operand 284 states and 394 transitions. Second operand has 12 states, 11 states have (on average 9.909090909090908) internal successors, (109), 9 states have internal predecessors, (109), 4 states have call successors, (50), 3 states have call predecessors, (50), 5 states have return successors, (49), 5 states have call predecessors, (49), 4 states have call successors, (49) [2021-12-14 17:05:45,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:05:45,972 INFO L93 Difference]: Finished difference Result 541 states and 751 transitions. [2021-12-14 17:05:45,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-14 17:05:45,974 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 9.909090909090908) internal successors, (109), 9 states have internal predecessors, (109), 4 states have call successors, (50), 3 states have call predecessors, (50), 5 states have return successors, (49), 5 states have call predecessors, (49), 4 states have call successors, (49) Word has length 336 [2021-12-14 17:05:45,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:05:45,976 INFO L225 Difference]: With dead ends: 541 [2021-12-14 17:05:45,976 INFO L226 Difference]: Without dead ends: 293 [2021-12-14 17:05:45,977 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-12-14 17:05:45,978 INFO L933 BasicCegarLoop]: 365 mSDtfsCounter, 19 mSDsluCounter, 1383 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 1748 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 47 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-14 17:05:45,978 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 1748 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 47 Unchecked, 0.8s Time] [2021-12-14 17:05:45,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2021-12-14 17:05:45,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 293. [2021-12-14 17:05:45,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 179 states have (on average 1.1955307262569832) internal successors, (214), 180 states have internal predecessors, (214), 88 states have call successors, (88), 26 states have call predecessors, (88), 25 states have return successors, (103), 86 states have call predecessors, (103), 87 states have call successors, (103) [2021-12-14 17:05:45,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 405 transitions. [2021-12-14 17:05:45,989 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 405 transitions. Word has length 336 [2021-12-14 17:05:45,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:05:45,989 INFO L470 AbstractCegarLoop]: Abstraction has 293 states and 405 transitions. [2021-12-14 17:05:45,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 9.909090909090908) internal successors, (109), 9 states have internal predecessors, (109), 4 states have call successors, (50), 3 states have call predecessors, (50), 5 states have return successors, (49), 5 states have call predecessors, (49), 4 states have call successors, (49) [2021-12-14 17:05:45,990 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 405 transitions. [2021-12-14 17:05:45,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2021-12-14 17:05:45,991 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:05:45,991 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 7, 7, 7, 7, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:05:46,054 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-12-14 17:05:46,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 17:05:46,206 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:05:46,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:05:46,206 INFO L85 PathProgramCache]: Analyzing trace with hash 726440312, now seen corresponding path program 1 times [2021-12-14 17:05:46,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 17:05:46,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [991479057] [2021-12-14 17:05:46,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:05:46,208 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 17:05:46,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 17:05:46,209 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-14 17:05:46,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-12-14 17:05:47,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:48,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 2515 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-14 17:05:48,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:05:48,513 INFO L134 CoverageAnalysis]: Checked inductivity of 883 backedges. 439 proven. 0 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2021-12-14 17:05:48,513 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:05:48,513 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 17:05:48,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [991479057] [2021-12-14 17:05:48,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [991479057] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:05:48,513 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:05:48,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 17:05:48,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95044477] [2021-12-14 17:05:48,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:05:48,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 17:05:48,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 17:05:48,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 17:05:48,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:05:48,515 INFO L87 Difference]: Start difference. First operand 293 states and 405 transitions. Second operand has 5 states, 4 states have (on average 25.25) internal successors, (101), 5 states have internal predecessors, (101), 3 states have call successors, (43), 2 states have call predecessors, (43), 3 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2021-12-14 17:05:48,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:05:48,665 INFO L93 Difference]: Finished difference Result 538 states and 747 transitions. [2021-12-14 17:05:48,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 17:05:48,666 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 25.25) internal successors, (101), 5 states have internal predecessors, (101), 3 states have call successors, (43), 2 states have call predecessors, (43), 3 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) Word has length 336 [2021-12-14 17:05:48,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:05:48,668 INFO L225 Difference]: With dead ends: 538 [2021-12-14 17:05:48,668 INFO L226 Difference]: Without dead ends: 288 [2021-12-14 17:05:48,669 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 332 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:05:48,669 INFO L933 BasicCegarLoop]: 366 mSDtfsCounter, 59 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 981 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 17:05:48,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 981 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 17:05:48,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2021-12-14 17:05:48,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 288. [2021-12-14 17:05:48,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 175 states have (on average 1.1885714285714286) internal successors, (208), 175 states have internal predecessors, (208), 88 states have call successors, (88), 26 states have call predecessors, (88), 24 states have return successors, (99), 86 states have call predecessors, (99), 87 states have call successors, (99) [2021-12-14 17:05:48,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 395 transitions. [2021-12-14 17:05:48,687 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 395 transitions. Word has length 336 [2021-12-14 17:05:48,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:05:48,688 INFO L470 AbstractCegarLoop]: Abstraction has 288 states and 395 transitions. [2021-12-14 17:05:48,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 25.25) internal successors, (101), 5 states have internal predecessors, (101), 3 states have call successors, (43), 2 states have call predecessors, (43), 3 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2021-12-14 17:05:48,688 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 395 transitions. [2021-12-14 17:05:48,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2021-12-14 17:05:48,690 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:05:48,690 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 7, 7, 7, 7, 7, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:05:48,754 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-12-14 17:05:48,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 17:05:48,903 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:05:48,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:05:48,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1622214181, now seen corresponding path program 1 times [2021-12-14 17:05:48,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 17:05:48,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1968136144] [2021-12-14 17:05:48,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:05:48,908 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 17:05:48,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 17:05:48,909 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-14 17:05:48,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-12-14 17:05:50,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:50,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 2532 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-14 17:05:50,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:05:51,098 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-14 17:05:51,776 INFO L134 CoverageAnalysis]: Checked inductivity of 889 backedges. 461 proven. 0 refuted. 0 times theorem prover too weak. 428 trivial. 0 not checked. [2021-12-14 17:05:51,776 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:05:51,776 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 17:05:51,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1968136144] [2021-12-14 17:05:51,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1968136144] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:05:51,776 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:05:51,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-14 17:05:51,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204457644] [2021-12-14 17:05:51,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:05:51,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-14 17:05:51,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 17:05:51,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-14 17:05:51,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-12-14 17:05:51,778 INFO L87 Difference]: Start difference. First operand 288 states and 395 transitions. Second operand has 13 states, 11 states have (on average 10.272727272727273) internal successors, (113), 10 states have internal predecessors, (113), 5 states have call successors, (51), 3 states have call predecessors, (51), 6 states have return successors, (50), 6 states have call predecessors, (50), 5 states have call successors, (50) [2021-12-14 17:05:52,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:05:52,545 INFO L93 Difference]: Finished difference Result 542 states and 746 transitions. [2021-12-14 17:05:52,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-14 17:05:52,547 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 10.272727272727273) internal successors, (113), 10 states have internal predecessors, (113), 5 states have call successors, (51), 3 states have call predecessors, (51), 6 states have return successors, (50), 6 states have call predecessors, (50), 5 states have call successors, (50) Word has length 342 [2021-12-14 17:05:52,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:05:52,549 INFO L225 Difference]: With dead ends: 542 [2021-12-14 17:05:52,549 INFO L226 Difference]: Without dead ends: 291 [2021-12-14 17:05:52,550 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 331 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-12-14 17:05:52,550 INFO L933 BasicCegarLoop]: 367 mSDtfsCounter, 9 mSDsluCounter, 2032 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2399 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 159 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-14 17:05:52,550 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 2399 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 64 Invalid, 0 Unknown, 159 Unchecked, 0.7s Time] [2021-12-14 17:05:52,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2021-12-14 17:05:52,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 284. [2021-12-14 17:05:52,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 171 states have (on average 1.1929824561403508) internal successors, (204), 172 states have internal predecessors, (204), 88 states have call successors, (88), 25 states have call predecessors, (88), 24 states have return successors, (99), 86 states have call predecessors, (99), 87 states have call successors, (99) [2021-12-14 17:05:52,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 391 transitions. [2021-12-14 17:05:52,573 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 391 transitions. Word has length 342 [2021-12-14 17:05:52,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:05:52,575 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 391 transitions. [2021-12-14 17:05:52,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 10.272727272727273) internal successors, (113), 10 states have internal predecessors, (113), 5 states have call successors, (51), 3 states have call predecessors, (51), 6 states have return successors, (50), 6 states have call predecessors, (50), 5 states have call successors, (50) [2021-12-14 17:05:52,575 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 391 transitions. [2021-12-14 17:05:52,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2021-12-14 17:05:52,579 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:05:52,579 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 7, 7, 7, 7, 7, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:05:52,633 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2021-12-14 17:05:52,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 17:05:52,783 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:05:52,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:05:52,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1674881120, now seen corresponding path program 2 times [2021-12-14 17:05:52,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 17:05:52,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1675051323] [2021-12-14 17:05:52,786 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-14 17:05:52,786 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 17:05:52,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 17:05:52,787 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-14 17:05:52,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-12-14 17:05:56,739 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-14 17:05:56,739 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-14 17:05:56,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 2549 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-14 17:05:56,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:05:57,254 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 334 proven. 0 refuted. 0 times theorem prover too weak. 566 trivial. 0 not checked. [2021-12-14 17:05:57,254 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:05:57,254 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 17:05:57,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1675051323] [2021-12-14 17:05:57,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1675051323] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:05:57,254 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:05:57,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 17:05:57,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174977661] [2021-12-14 17:05:57,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:05:57,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 17:05:57,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 17:05:57,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 17:05:57,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 17:05:57,256 INFO L87 Difference]: Start difference. First operand 284 states and 391 transitions. Second operand has 7 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 3 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2021-12-14 17:05:57,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:05:57,449 INFO L93 Difference]: Finished difference Result 487 states and 707 transitions. [2021-12-14 17:05:57,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 17:05:57,449 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 3 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) Word has length 347 [2021-12-14 17:05:57,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:05:57,451 INFO L225 Difference]: With dead ends: 487 [2021-12-14 17:05:57,451 INFO L226 Difference]: Without dead ends: 290 [2021-12-14 17:05:57,452 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-14 17:05:57,452 INFO L933 BasicCegarLoop]: 343 mSDtfsCounter, 2 mSDsluCounter, 1662 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2005 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-14 17:05:57,453 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 2005 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-14 17:05:57,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2021-12-14 17:05:57,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 287. [2021-12-14 17:05:57,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 173 states have (on average 1.1907514450867052) internal successors, (206), 175 states have internal predecessors, (206), 88 states have call successors, (88), 25 states have call predecessors, (88), 25 states have return successors, (114), 86 states have call predecessors, (114), 87 states have call successors, (114) [2021-12-14 17:05:57,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 408 transitions. [2021-12-14 17:05:57,461 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 408 transitions. Word has length 347 [2021-12-14 17:05:57,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:05:57,462 INFO L470 AbstractCegarLoop]: Abstraction has 287 states and 408 transitions. [2021-12-14 17:05:57,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 3 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2021-12-14 17:05:57,462 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 408 transitions. [2021-12-14 17:05:57,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2021-12-14 17:05:57,464 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:05:57,464 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:05:57,525 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-12-14 17:05:57,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 17:05:57,679 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:05:57,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:05:57,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1222453825, now seen corresponding path program 2 times [2021-12-14 17:05:57,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 17:05:57,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [843763466] [2021-12-14 17:05:57,682 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-14 17:05:57,682 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 17:05:57,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 17:05:57,682 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-14 17:05:57,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-12-14 17:06:01,842 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-14 17:06:01,843 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-14 17:06:01,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 2563 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-14 17:06:01,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:06:02,952 INFO L134 CoverageAnalysis]: Checked inductivity of 912 backedges. 334 proven. 0 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2021-12-14 17:06:02,953 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:06:02,953 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 17:06:02,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [843763466] [2021-12-14 17:06:02,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [843763466] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:06:02,953 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:06:02,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 17:06:02,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501177694] [2021-12-14 17:06:02,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:06:02,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 17:06:02,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 17:06:02,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 17:06:02,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-14 17:06:02,954 INFO L87 Difference]: Start difference. First operand 287 states and 408 transitions. Second operand has 8 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 3 states have call successors, (38), 3 states have call predecessors, (38), 3 states have return successors, (37), 2 states have call predecessors, (37), 3 states have call successors, (37) [2021-12-14 17:06:04,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:06:04,127 INFO L93 Difference]: Finished difference Result 491 states and 730 transitions. [2021-12-14 17:06:04,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-14 17:06:04,128 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 3 states have call successors, (38), 3 states have call predecessors, (38), 3 states have return successors, (37), 2 states have call predecessors, (37), 3 states have call successors, (37) Word has length 353 [2021-12-14 17:06:04,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:06:04,130 INFO L225 Difference]: With dead ends: 491 [2021-12-14 17:06:04,130 INFO L226 Difference]: Without dead ends: 289 [2021-12-14 17:06:04,131 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-12-14 17:06:04,131 INFO L933 BasicCegarLoop]: 360 mSDtfsCounter, 7 mSDsluCounter, 1639 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1999 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 123 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-14 17:06:04,131 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 1999 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 76 Invalid, 0 Unknown, 123 Unchecked, 1.0s Time] [2021-12-14 17:06:04,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2021-12-14 17:06:04,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 286. [2021-12-14 17:06:04,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 173 states have (on average 1.1907514450867052) internal successors, (206), 174 states have internal predecessors, (206), 87 states have call successors, (87), 25 states have call predecessors, (87), 25 states have return successors, (113), 86 states have call predecessors, (113), 86 states have call successors, (113) [2021-12-14 17:06:04,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 406 transitions. [2021-12-14 17:06:04,141 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 406 transitions. Word has length 353 [2021-12-14 17:06:04,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:06:04,142 INFO L470 AbstractCegarLoop]: Abstraction has 286 states and 406 transitions. [2021-12-14 17:06:04,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 3 states have call successors, (38), 3 states have call predecessors, (38), 3 states have return successors, (37), 2 states have call predecessors, (37), 3 states have call successors, (37) [2021-12-14 17:06:04,143 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 406 transitions. [2021-12-14 17:06:04,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2021-12-14 17:06:04,144 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:06:04,144 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 7, 7, 7, 7, 7, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:06:04,211 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-12-14 17:06:04,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 17:06:04,367 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:06:04,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:06:04,368 INFO L85 PathProgramCache]: Analyzing trace with hash 132787104, now seen corresponding path program 3 times [2021-12-14 17:06:04,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 17:06:04,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1977594870] [2021-12-14 17:06:04,370 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-14 17:06:04,370 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 17:06:04,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 17:06:04,371 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-14 17:06:04,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-12-14 17:06:07,144 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-12-14 17:06:07,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-14 17:06:07,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 1455 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-14 17:06:07,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:06:07,566 INFO L134 CoverageAnalysis]: Checked inductivity of 928 backedges. 166 proven. 0 refuted. 0 times theorem prover too weak. 762 trivial. 0 not checked. [2021-12-14 17:06:07,566 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:06:07,566 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 17:06:07,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1977594870] [2021-12-14 17:06:07,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1977594870] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:06:07,566 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:06:07,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 17:06:07,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454678611] [2021-12-14 17:06:07,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:06:07,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 17:06:07,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 17:06:07,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 17:06:07,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 17:06:07,568 INFO L87 Difference]: Start difference. First operand 286 states and 406 transitions. Second operand has 7 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 3 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2021-12-14 17:06:07,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:06:07,759 INFO L93 Difference]: Finished difference Result 482 states and 703 transitions. [2021-12-14 17:06:07,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 17:06:07,760 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 3 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) Word has length 358 [2021-12-14 17:06:07,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:06:07,762 INFO L225 Difference]: With dead ends: 482 [2021-12-14 17:06:07,762 INFO L226 Difference]: Without dead ends: 289 [2021-12-14 17:06:07,762 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 352 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-14 17:06:07,763 INFO L933 BasicCegarLoop]: 343 mSDtfsCounter, 2 mSDsluCounter, 1662 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2005 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-14 17:06:07,763 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 2005 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-14 17:06:07,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2021-12-14 17:06:07,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2021-12-14 17:06:07,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 175 states have (on average 1.1885714285714286) internal successors, (208), 177 states have internal predecessors, (208), 87 states have call successors, (87), 25 states have call predecessors, (87), 26 states have return successors, (123), 86 states have call predecessors, (123), 86 states have call successors, (123) [2021-12-14 17:06:07,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 418 transitions. [2021-12-14 17:06:07,771 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 418 transitions. Word has length 358 [2021-12-14 17:06:07,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:06:07,772 INFO L470 AbstractCegarLoop]: Abstraction has 289 states and 418 transitions. [2021-12-14 17:06:07,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 3 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2021-12-14 17:06:07,772 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 418 transitions. [2021-12-14 17:06:07,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2021-12-14 17:06:07,773 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:06:07,773 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 7, 7, 7, 7, 7, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:06:07,806 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-12-14 17:06:07,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 17:06:07,974 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:06:07,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:06:07,974 INFO L85 PathProgramCache]: Analyzing trace with hash 2107400608, now seen corresponding path program 4 times [2021-12-14 17:06:07,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 17:06:07,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1850376806] [2021-12-14 17:06:07,976 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-14 17:06:07,976 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 17:06:07,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 17:06:07,977 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-14 17:06:07,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-12-14 17:06:10,171 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-14 17:06:10,172 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-14 17:06:10,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 2611 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-14 17:06:10,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:06:10,749 INFO L134 CoverageAnalysis]: Checked inductivity of 967 backedges. 339 proven. 0 refuted. 0 times theorem prover too weak. 628 trivial. 0 not checked. [2021-12-14 17:06:10,749 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:06:10,749 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 17:06:10,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1850376806] [2021-12-14 17:06:10,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1850376806] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:06:10,750 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:06:10,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 17:06:10,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774859480] [2021-12-14 17:06:10,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:06:10,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 17:06:10,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 17:06:10,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 17:06:10,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 17:06:10,751 INFO L87 Difference]: Start difference. First operand 289 states and 418 transitions. Second operand has 7 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 3 states have call successors, (39), 2 states have call predecessors, (39), 4 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2021-12-14 17:06:10,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:06:10,959 INFO L93 Difference]: Finished difference Result 491 states and 727 transitions. [2021-12-14 17:06:10,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 17:06:10,960 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 3 states have call successors, (39), 2 states have call predecessors, (39), 4 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) Word has length 369 [2021-12-14 17:06:10,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:06:10,962 INFO L225 Difference]: With dead ends: 491 [2021-12-14 17:06:10,963 INFO L226 Difference]: Without dead ends: 289 [2021-12-14 17:06:10,964 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 363 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-14 17:06:10,964 INFO L933 BasicCegarLoop]: 343 mSDtfsCounter, 2 mSDsluCounter, 1662 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2005 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-14 17:06:10,964 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 2005 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-14 17:06:10,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2021-12-14 17:06:10,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2021-12-14 17:06:10,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 175 states have (on average 1.1885714285714286) internal successors, (208), 177 states have internal predecessors, (208), 87 states have call successors, (87), 25 states have call predecessors, (87), 26 states have return successors, (122), 86 states have call predecessors, (122), 86 states have call successors, (122) [2021-12-14 17:06:10,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 417 transitions. [2021-12-14 17:06:10,973 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 417 transitions. Word has length 369 [2021-12-14 17:06:10,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:06:10,974 INFO L470 AbstractCegarLoop]: Abstraction has 289 states and 417 transitions. [2021-12-14 17:06:10,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 3 states have call successors, (39), 2 states have call predecessors, (39), 4 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2021-12-14 17:06:10,974 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 417 transitions. [2021-12-14 17:06:10,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2021-12-14 17:06:10,976 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:06:10,976 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 7, 7, 7, 7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:06:11,055 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-12-14 17:06:11,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 17:06:11,195 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:06:11,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:06:11,196 INFO L85 PathProgramCache]: Analyzing trace with hash -133143286, now seen corresponding path program 5 times [2021-12-14 17:06:11,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 17:06:11,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [25997453] [2021-12-14 17:06:11,198 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-14 17:06:11,198 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 17:06:11,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 17:06:11,199 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-14 17:06:11,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process