./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_array_eq_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 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_array_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 c9f60659fbb0886b2c3c86084c4cc81dbedd027936fc1dda43226ecbc4710056 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-16 20:00:47,209 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-16 20:00:47,211 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-16 20:00:47,244 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-16 20:00:47,245 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-16 20:00:47,248 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-16 20:00:47,251 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-16 20:00:47,254 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-16 20:00:47,257 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-16 20:00:47,262 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-16 20:00:47,262 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-16 20:00:47,263 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-16 20:00:47,264 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-16 20:00:47,265 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-16 20:00:47,267 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-16 20:00:47,268 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-16 20:00:47,272 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-16 20:00:47,273 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-16 20:00:47,274 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-16 20:00:47,276 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-16 20:00:47,279 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-16 20:00:47,280 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-16 20:00:47,281 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-16 20:00:47,282 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-16 20:00:47,283 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-16 20:00:47,286 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-16 20:00:47,286 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-16 20:00:47,287 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-16 20:00:47,287 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-16 20:00:47,288 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-16 20:00:47,288 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-16 20:00:47,289 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-16 20:00:47,290 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-16 20:00:47,291 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-16 20:00:47,291 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-16 20:00:47,292 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-16 20:00:47,292 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-16 20:00:47,292 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-16 20:00:47,293 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-16 20:00:47,293 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-16 20:00:47,294 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-16 20:00:47,294 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-16 20:00:47,321 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-16 20:00:47,321 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-16 20:00:47,321 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-16 20:00:47,322 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-16 20:00:47,322 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-16 20:00:47,322 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-16 20:00:47,323 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-16 20:00:47,323 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-16 20:00:47,323 INFO L138 SettingsManager]: * Use SBE=true [2021-11-16 20:00:47,323 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-16 20:00:47,324 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-16 20:00:47,324 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-16 20:00:47,324 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-16 20:00:47,325 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-16 20:00:47,325 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-16 20:00:47,325 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-16 20:00:47,325 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-16 20:00:47,325 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-16 20:00:47,325 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-16 20:00:47,325 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-16 20:00:47,326 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-16 20:00:47,326 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-16 20:00:47,326 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-16 20:00:47,326 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-16 20:00:47,326 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-16 20:00:47,326 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-16 20:00:47,327 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-16 20:00:47,328 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-16 20:00:47,328 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-16 20:00:47,328 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-16 20:00:47,328 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-16 20:00:47,328 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c9f60659fbb0886b2c3c86084c4cc81dbedd027936fc1dda43226ecbc4710056 [2021-11-16 20:00:47,597 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-16 20:00:47,614 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-16 20:00:47,616 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-16 20:00:47,617 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-16 20:00:47,617 INFO L275 PluginConnector]: CDTParser initialized [2021-11-16 20:00:47,618 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_array_eq_harness.i [2021-11-16 20:00:47,669 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/180e9e1fd/78145cb4a46347c79fec17bbb81c690c/FLAG15748120b [2021-11-16 20:00:48,282 INFO L306 CDTParser]: Found 1 translation units. [2021-11-16 20:00:48,282 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_eq_harness.i [2021-11-16 20:00:48,311 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/180e9e1fd/78145cb4a46347c79fec17bbb81c690c/FLAG15748120b [2021-11-16 20:00:48,420 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/180e9e1fd/78145cb4a46347c79fec17bbb81c690c [2021-11-16 20:00:48,423 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-16 20:00:48,424 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-16 20:00:48,425 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-16 20:00:48,425 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-16 20:00:48,428 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-16 20:00:48,428 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:00:48" (1/1) ... [2021-11-16 20:00:48,430 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61711c43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:00:48, skipping insertion in model container [2021-11-16 20:00:48,430 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:00:48" (1/1) ... [2021-11-16 20:00:48,435 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-16 20:00:48,530 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-16 20:00:48,706 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_array_eq_harness.i[4486,4499] [2021-11-16 20:00:48,712 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_array_eq_harness.i[4546,4559] [2021-11-16 20:00:48,729 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-16 20:00:48,735 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-16 20:00:49,489 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:00:49,492 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:00:49,493 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:00:49,494 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:00:49,495 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:00:49,503 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:00:49,505 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:00:49,508 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:00:49,509 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:00:49,708 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-16 20:00:49,709 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-16 20:00:49,710 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-16 20:00:49,711 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-16 20:00:49,714 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-16 20:00:49,715 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-16 20:00:49,716 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-16 20:00:49,717 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-16 20:00:49,718 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-16 20:00:49,720 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-16 20:00:49,822 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-16 20:00:49,869 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:00:49,870 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:00:49,922 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-16 20:00:49,969 INFO L203 MainTranslator]: Completed pre-run [2021-11-16 20:00:49,994 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_array_eq_harness.i[4486,4499] [2021-11-16 20:00:49,995 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_array_eq_harness.i[4546,4559] [2021-11-16 20:00:49,996 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-16 20:00:49,998 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-16 20:00:50,031 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:00:50,031 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:00:50,033 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:00:50,034 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:00:50,034 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:00:50,047 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:00:50,048 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:00:50,049 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:00:50,049 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:00:50,084 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-16 20:00:50,085 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-16 20:00:50,085 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-16 20:00:50,085 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-16 20:00:50,086 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-16 20:00:50,086 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-16 20:00:50,087 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-16 20:00:50,087 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-16 20:00:50,087 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-16 20:00:50,088 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-16 20:00:50,104 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-16 20:00:50,287 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:00:50,290 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:00:50,343 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-16 20:00:50,599 INFO L208 MainTranslator]: Completed translation [2021-11-16 20:00:50,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:00:50 WrapperNode [2021-11-16 20:00:50,599 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-16 20:00:50,600 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-16 20:00:50,600 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-16 20:00:50,600 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-16 20:00:50,605 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:00:50" (1/1) ... [2021-11-16 20:00:50,720 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:00:50" (1/1) ... [2021-11-16 20:00:50,798 INFO L137 Inliner]: procedures = 693, calls = 2618, calls flagged for inlining = 59, calls inlined = 5, statements flattened = 786 [2021-11-16 20:00:50,799 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-16 20:00:50,799 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-16 20:00:50,800 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-16 20:00:50,800 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-16 20:00:50,806 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:00:50" (1/1) ... [2021-11-16 20:00:50,806 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:00:50" (1/1) ... [2021-11-16 20:00:50,815 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:00:50" (1/1) ... [2021-11-16 20:00:50,816 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:00:50" (1/1) ... [2021-11-16 20:00:50,851 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:00:50" (1/1) ... [2021-11-16 20:00:50,860 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:00:50" (1/1) ... [2021-11-16 20:00:50,864 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:00:50" (1/1) ... [2021-11-16 20:00:50,875 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-16 20:00:50,879 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-16 20:00:50,879 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-16 20:00:50,880 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-16 20:00:50,881 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:00:50" (1/1) ... [2021-11-16 20:00:50,886 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-16 20:00:50,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 20:00:50,905 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-16 20:00:50,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-16 20:00:50,960 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-16 20:00:50,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-16 20:00:50,960 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-16 20:00:50,960 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-16 20:00:50,961 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-16 20:00:50,961 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-16 20:00:50,961 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-16 20:00:50,962 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-16 20:00:50,962 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-16 20:00:50,962 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2021-11-16 20:00:50,963 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2021-11-16 20:00:50,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-16 20:00:50,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-16 20:00:50,963 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-16 20:00:50,963 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-16 20:00:50,963 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2021-11-16 20:00:50,964 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2021-11-16 20:00:50,964 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2021-11-16 20:00:50,964 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2021-11-16 20:00:50,983 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-16 20:00:50,984 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-16 20:00:50,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-16 20:00:50,984 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq [2021-11-16 20:00:50,985 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq [2021-11-16 20:00:50,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-16 20:00:50,985 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-16 20:00:50,985 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-16 20:00:50,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-16 20:00:50,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-16 20:00:51,150 INFO L236 CfgBuilder]: Building ICFG [2021-11-16 20:00:51,151 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-16 20:00:51,997 INFO L277 CfgBuilder]: Performing block encoding [2021-11-16 20:00:52,004 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-16 20:00:52,004 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-16 20:00:52,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 08:00:52 BoogieIcfgContainer [2021-11-16 20:00:52,006 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-16 20:00:52,008 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-16 20:00:52,008 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-16 20:00:52,010 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-16 20:00:52,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 08:00:48" (1/3) ... [2021-11-16 20:00:52,011 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@160feadd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:00:52, skipping insertion in model container [2021-11-16 20:00:52,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:00:50" (2/3) ... [2021-11-16 20:00:52,012 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@160feadd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:00:52, skipping insertion in model container [2021-11-16 20:00:52,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 08:00:52" (3/3) ... [2021-11-16 20:00:52,013 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_array_eq_harness.i [2021-11-16 20:00:52,018 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-16 20:00:52,018 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-16 20:00:52,128 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-16 20:00:52,137 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-16 20:00:52,137 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-16 20:00:52,160 INFO L276 IsEmpty]: Start isEmpty. Operand has 87 states, 52 states have (on average 1.2692307692307692) internal successors, (66), 55 states have internal predecessors, (66), 24 states have call successors, (24), 9 states have call predecessors, (24), 9 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-16 20:00:52,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-16 20:00:52,168 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:00:52,169 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 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] [2021-11-16 20:00:52,169 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:00:52,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:00:52,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1074851773, now seen corresponding path program 1 times [2021-11-16 20:00:52,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:00:52,181 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134131988] [2021-11-16 20:00:52,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:00:52,182 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:00:52,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:52,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 20:00:52,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:52,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-16 20:00:52,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:52,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:00:52,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:52,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-16 20:00:52,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:52,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-16 20:00:52,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:52,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-16 20:00:52,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:52,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-11-16 20:00:52,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:52,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-16 20:00:52,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:52,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-16 20:00:52,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:52,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:00:52,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:52,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 20:00:52,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:52,746 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-11-16 20:00:52,747 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:00:52,747 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134131988] [2021-11-16 20:00:52,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134131988] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 20:00:52,748 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 20:00:52,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-16 20:00:52,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827394014] [2021-11-16 20:00:52,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 20:00:52,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-16 20:00:52,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:00:52,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-16 20:00:52,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-16 20:00:52,780 INFO L87 Difference]: Start difference. First operand has 87 states, 52 states have (on average 1.2692307692307692) internal successors, (66), 55 states have internal predecessors, (66), 24 states have call successors, (24), 9 states have call predecessors, (24), 9 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-16 20:00:53,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:00:53,040 INFO L93 Difference]: Finished difference Result 176 states and 252 transitions. [2021-11-16 20:00:53,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-16 20:00:53,044 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 65 [2021-11-16 20:00:53,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:00:53,050 INFO L225 Difference]: With dead ends: 176 [2021-11-16 20:00:53,051 INFO L226 Difference]: Without dead ends: 87 [2021-11-16 20:00:53,055 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-16 20:00:53,062 INFO L933 BasicCegarLoop]: 103 mSDtfsCounter, 72 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-16 20:00:53,063 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 150 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-16 20:00:53,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-11-16 20:00:53,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 82. [2021-11-16 20:00:53,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 48 states have (on average 1.2291666666666667) internal successors, (59), 50 states have internal predecessors, (59), 24 states have call successors, (24), 9 states have call predecessors, (24), 9 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2021-11-16 20:00:53,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 106 transitions. [2021-11-16 20:00:53,109 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 106 transitions. Word has length 65 [2021-11-16 20:00:53,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:00:53,110 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 106 transitions. [2021-11-16 20:00:53,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-16 20:00:53,111 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 106 transitions. [2021-11-16 20:00:53,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-16 20:00:53,115 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:00:53,116 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 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] [2021-11-16 20:00:53,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-16 20:00:53,116 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:00:53,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:00:53,117 INFO L85 PathProgramCache]: Analyzing trace with hash 401511231, now seen corresponding path program 1 times [2021-11-16 20:00:53,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:00:53,117 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327189350] [2021-11-16 20:00:53,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:00:53,117 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:00:53,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:53,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 20:00:53,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:53,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-16 20:00:53,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:53,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:00:53,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:53,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-16 20:00:53,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:53,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-16 20:00:53,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:53,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-16 20:00:53,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:53,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-11-16 20:00:53,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:53,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-16 20:00:53,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:53,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-16 20:00:53,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:53,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:00:53,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:53,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 20:00:53,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:53,408 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-11-16 20:00:53,408 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:00:53,408 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327189350] [2021-11-16 20:00:53,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327189350] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 20:00:53,409 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 20:00:53,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-16 20:00:53,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643286483] [2021-11-16 20:00:53,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 20:00:53,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-16 20:00:53,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:00:53,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-16 20:00:53,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-16 20:00:53,411 INFO L87 Difference]: Start difference. First operand 82 states and 106 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2021-11-16 20:00:53,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:00:53,648 INFO L93 Difference]: Finished difference Result 124 states and 158 transitions. [2021-11-16 20:00:53,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-16 20:00:53,649 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 65 [2021-11-16 20:00:53,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:00:53,651 INFO L225 Difference]: With dead ends: 124 [2021-11-16 20:00:53,651 INFO L226 Difference]: Without dead ends: 90 [2021-11-16 20:00:53,652 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-16 20:00:53,652 INFO L933 BasicCegarLoop]: 96 mSDtfsCounter, 74 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-16 20:00:53,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 252 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-16 20:00:53,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-11-16 20:00:53,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 85. [2021-11-16 20:00:53,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 50 states have (on average 1.22) internal successors, (61), 52 states have internal predecessors, (61), 24 states have call successors, (24), 9 states have call predecessors, (24), 10 states have return successors, (24), 24 states have call predecessors, (24), 23 states have call successors, (24) [2021-11-16 20:00:53,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 109 transitions. [2021-11-16 20:00:53,661 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 109 transitions. Word has length 65 [2021-11-16 20:00:53,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:00:53,661 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 109 transitions. [2021-11-16 20:00:53,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2021-11-16 20:00:53,662 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 109 transitions. [2021-11-16 20:00:53,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-16 20:00:53,663 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:00:53,663 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 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] [2021-11-16 20:00:53,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-16 20:00:53,663 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:00:53,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:00:53,664 INFO L85 PathProgramCache]: Analyzing trace with hash 560902053, now seen corresponding path program 1 times [2021-11-16 20:00:53,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:00:53,664 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500378258] [2021-11-16 20:00:53,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:00:53,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:00:53,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:53,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 20:00:53,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:53,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-16 20:00:53,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:54,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:00:54,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:54,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-16 20:00:54,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:54,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-16 20:00:54,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:54,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-16 20:00:54,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:54,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-11-16 20:00:54,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:54,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-16 20:00:54,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:54,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-16 20:00:54,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:54,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:00:54,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:54,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 20:00:54,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:54,136 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-16 20:00:54,137 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:00:54,137 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500378258] [2021-11-16 20:00:54,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500378258] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-16 20:00:54,137 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1833484950] [2021-11-16 20:00:54,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:00:54,138 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:00:54,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 20:00:54,164 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-16 20:00:54,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-16 20:00:54,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:54,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 2437 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-16 20:00:54,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 20:00:54,724 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-11-16 20:00:54,725 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-16 20:00:54,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1833484950] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 20:00:54,725 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-16 20:00:54,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [14] total 18 [2021-11-16 20:00:54,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412430366] [2021-11-16 20:00:54,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 20:00:54,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-16 20:00:54,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:00:54,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-16 20:00:54,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2021-11-16 20:00:54,727 INFO L87 Difference]: Start difference. First operand 85 states and 109 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-16 20:00:54,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:00:54,797 INFO L93 Difference]: Finished difference Result 132 states and 176 transitions. [2021-11-16 20:00:54,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-16 20:00:54,798 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 66 [2021-11-16 20:00:54,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:00:54,799 INFO L225 Difference]: With dead ends: 132 [2021-11-16 20:00:54,800 INFO L226 Difference]: Without dead ends: 116 [2021-11-16 20:00:54,800 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 82 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2021-11-16 20:00:54,801 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 18 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-16 20:00:54,801 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 542 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-16 20:00:54,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-11-16 20:00:54,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 101. [2021-11-16 20:00:54,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 58 states have (on average 1.206896551724138) internal successors, (70), 61 states have internal predecessors, (70), 30 states have call successors, (30), 10 states have call predecessors, (30), 12 states have return successors, (33), 30 states have call predecessors, (33), 29 states have call successors, (33) [2021-11-16 20:00:54,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 133 transitions. [2021-11-16 20:00:54,809 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 133 transitions. Word has length 66 [2021-11-16 20:00:54,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:00:54,809 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 133 transitions. [2021-11-16 20:00:54,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-16 20:00:54,810 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 133 transitions. [2021-11-16 20:00:54,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-16 20:00:54,811 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:00:54,811 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 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] [2021-11-16 20:00:54,834 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-16 20:00:55,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:00:55,035 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:00:55,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:00:55,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1220340855, now seen corresponding path program 1 times [2021-11-16 20:00:55,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:00:55,035 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441987346] [2021-11-16 20:00:55,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:00:55,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:00:55,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:55,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 20:00:55,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:55,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-16 20:00:55,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:55,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:00:55,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:55,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-16 20:00:55,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:55,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-16 20:00:55,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:55,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-16 20:00:55,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:55,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-11-16 20:00:55,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:55,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-16 20:00:55,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:55,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-16 20:00:55,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:55,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:00:55,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:55,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 20:00:55,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:55,244 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-11-16 20:00:55,245 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:00:55,245 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441987346] [2021-11-16 20:00:55,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441987346] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 20:00:55,245 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 20:00:55,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-16 20:00:55,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609475959] [2021-11-16 20:00:55,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 20:00:55,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-16 20:00:55,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:00:55,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-16 20:00:55,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-16 20:00:55,247 INFO L87 Difference]: Start difference. First operand 101 states and 133 transitions. Second operand has 8 states, 8 states have (on average 3.5) internal successors, (28), 5 states have internal predecessors, (28), 3 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-16 20:00:55,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:00:55,579 INFO L93 Difference]: Finished difference Result 168 states and 238 transitions. [2021-11-16 20:00:55,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-16 20:00:55,579 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 5 states have internal predecessors, (28), 3 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 69 [2021-11-16 20:00:55,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:00:55,581 INFO L225 Difference]: With dead ends: 168 [2021-11-16 20:00:55,581 INFO L226 Difference]: Without dead ends: 136 [2021-11-16 20:00:55,582 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-11-16 20:00:55,582 INFO L933 BasicCegarLoop]: 101 mSDtfsCounter, 76 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-16 20:00:55,582 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 385 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-16 20:00:55,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-11-16 20:00:55,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 132. [2021-11-16 20:00:55,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 73 states have (on average 1.2054794520547945) internal successors, (88), 75 states have internal predecessors, (88), 45 states have call successors, (45), 10 states have call predecessors, (45), 13 states have return successors, (55), 47 states have call predecessors, (55), 44 states have call successors, (55) [2021-11-16 20:00:55,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 188 transitions. [2021-11-16 20:00:55,592 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 188 transitions. Word has length 69 [2021-11-16 20:00:55,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:00:55,593 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 188 transitions. [2021-11-16 20:00:55,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 5 states have internal predecessors, (28), 3 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-16 20:00:55,593 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 188 transitions. [2021-11-16 20:00:55,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-16 20:00:55,595 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:00:55,595 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 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] [2021-11-16 20:00:55,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-16 20:00:55,595 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:00:55,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:00:55,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1527144091, now seen corresponding path program 1 times [2021-11-16 20:00:55,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:00:55,596 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295909243] [2021-11-16 20:00:55,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:00:55,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:00:55,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:55,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 20:00:55,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:55,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-16 20:00:55,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:55,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:00:55,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:55,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-16 20:00:55,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:55,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-16 20:00:55,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:55,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-16 20:00:55,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:55,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-11-16 20:00:55,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:55,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-16 20:00:55,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:55,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-16 20:00:55,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:55,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:00:55,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:55,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 20:00:55,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:55,911 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-11-16 20:00:55,911 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:00:55,911 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295909243] [2021-11-16 20:00:55,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295909243] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 20:00:55,911 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 20:00:55,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-16 20:00:55,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043012369] [2021-11-16 20:00:55,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 20:00:55,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-16 20:00:55,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:00:55,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-16 20:00:55,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-16 20:00:55,913 INFO L87 Difference]: Start difference. First operand 132 states and 188 transitions. Second operand has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 6 states have internal predecessors, (29), 4 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-16 20:00:56,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:00:56,343 INFO L93 Difference]: Finished difference Result 153 states and 216 transitions. [2021-11-16 20:00:56,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-16 20:00:56,344 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 6 states have internal predecessors, (29), 4 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) Word has length 70 [2021-11-16 20:00:56,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:00:56,345 INFO L225 Difference]: With dead ends: 153 [2021-11-16 20:00:56,345 INFO L226 Difference]: Without dead ends: 126 [2021-11-16 20:00:56,346 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-11-16 20:00:56,346 INFO L933 BasicCegarLoop]: 109 mSDtfsCounter, 88 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-16 20:00:56,346 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 489 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-16 20:00:56,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-11-16 20:00:56,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 122. [2021-11-16 20:00:56,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 69 states have (on average 1.1884057971014492) internal successors, (82), 71 states have internal predecessors, (82), 39 states have call successors, (39), 10 states have call predecessors, (39), 13 states have return successors, (47), 41 states have call predecessors, (47), 38 states have call successors, (47) [2021-11-16 20:00:56,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 168 transitions. [2021-11-16 20:00:56,354 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 168 transitions. Word has length 70 [2021-11-16 20:00:56,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:00:56,354 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 168 transitions. [2021-11-16 20:00:56,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 6 states have internal predecessors, (29), 4 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-16 20:00:56,355 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 168 transitions. [2021-11-16 20:00:56,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-16 20:00:56,356 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:00:56,356 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 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] [2021-11-16 20:00:56,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-16 20:00:56,356 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:00:56,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:00:56,357 INFO L85 PathProgramCache]: Analyzing trace with hash -343504052, now seen corresponding path program 1 times [2021-11-16 20:00:56,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:00:56,357 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74768601] [2021-11-16 20:00:56,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:00:56,357 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:00:56,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:56,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 20:00:56,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:56,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-16 20:00:56,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:56,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:00:56,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:56,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-16 20:00:56,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:56,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-16 20:00:56,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:56,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-16 20:00:56,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:56,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:00:56,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:56,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-16 20:00:56,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:56,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-11-16 20:00:56,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:56,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-16 20:00:56,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:56,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-11-16 20:00:56,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:56,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-11-16 20:00:56,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:56,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:00:56,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:56,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 20:00:56,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:56,841 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 9 proven. 18 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-11-16 20:00:56,842 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:00:56,842 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74768601] [2021-11-16 20:00:56,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74768601] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-16 20:00:56,842 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [436389384] [2021-11-16 20:00:56,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:00:56,842 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:00:56,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 20:00:56,843 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-16 20:00:56,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-16 20:00:57,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:57,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 2475 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-16 20:00:57,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 20:00:57,548 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-11-16 20:00:57,548 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-16 20:00:57,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [436389384] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 20:00:57,548 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-16 20:00:57,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [17] total 22 [2021-11-16 20:00:57,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614580296] [2021-11-16 20:00:57,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 20:00:57,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-16 20:00:57,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:00:57,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-16 20:00:57,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=409, Unknown=0, NotChecked=0, Total=462 [2021-11-16 20:00:57,551 INFO L87 Difference]: Start difference. First operand 122 states and 168 transitions. Second operand has 9 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-16 20:00:57,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:00:57,697 INFO L93 Difference]: Finished difference Result 173 states and 230 transitions. [2021-11-16 20:00:57,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-16 20:00:57,697 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) Word has length 82 [2021-11-16 20:00:57,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:00:57,698 INFO L225 Difference]: With dead ends: 173 [2021-11-16 20:00:57,698 INFO L226 Difference]: Without dead ends: 119 [2021-11-16 20:00:57,699 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 104 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=71, Invalid=529, Unknown=0, NotChecked=0, Total=600 [2021-11-16 20:00:57,700 INFO L933 BasicCegarLoop]: 98 mSDtfsCounter, 16 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-16 20:00:57,715 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 661 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-16 20:00:57,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-11-16 20:00:57,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2021-11-16 20:00:57,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 67 states have (on average 1.1791044776119404) internal successors, (79), 69 states have internal predecessors, (79), 39 states have call successors, (39), 10 states have call predecessors, (39), 12 states have return successors, (44), 40 states have call predecessors, (44), 38 states have call successors, (44) [2021-11-16 20:00:57,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 162 transitions. [2021-11-16 20:00:57,722 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 162 transitions. Word has length 82 [2021-11-16 20:00:57,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:00:57,722 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 162 transitions. [2021-11-16 20:00:57,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-16 20:00:57,722 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 162 transitions. [2021-11-16 20:00:57,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-16 20:00:57,723 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:00:57,723 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 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] [2021-11-16 20:00:57,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-16 20:00:57,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-16 20:00:57,930 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:00:57,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:00:57,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1399306283, now seen corresponding path program 1 times [2021-11-16 20:00:57,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:00:57,931 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186580315] [2021-11-16 20:00:57,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:00:57,931 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:00:58,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:58,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 20:00:58,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:58,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-16 20:00:58,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:58,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:00:58,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:58,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-16 20:00:58,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:58,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-16 20:00:58,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:58,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-16 20:00:58,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:58,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:00:58,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:58,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-16 20:00:58,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:58,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-11-16 20:00:58,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:58,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-16 20:00:58,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:58,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-11-16 20:00:58,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:58,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-11-16 20:00:58,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:58,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:00:58,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:58,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 20:00:58,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:58,405 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2021-11-16 20:00:58,406 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:00:58,406 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186580315] [2021-11-16 20:00:58,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186580315] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-16 20:00:58,406 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265086722] [2021-11-16 20:00:58,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:00:58,406 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:00:58,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 20:00:58,413 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-16 20:00:58,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-16 20:00:58,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:58,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 2476 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-16 20:00:58,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 20:00:58,952 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-11-16 20:00:58,952 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-16 20:00:58,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265086722] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 20:00:58,953 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-16 20:00:58,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 18 [2021-11-16 20:00:58,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066185379] [2021-11-16 20:00:58,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 20:00:58,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-16 20:00:58,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:00:58,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-16 20:00:58,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-11-16 20:00:58,954 INFO L87 Difference]: Start difference. First operand 119 states and 162 transitions. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-16 20:00:59,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:00:59,039 INFO L93 Difference]: Finished difference Result 151 states and 200 transitions. [2021-11-16 20:00:59,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-16 20:00:59,039 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) Word has length 82 [2021-11-16 20:00:59,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:00:59,040 INFO L225 Difference]: With dead ends: 151 [2021-11-16 20:00:59,040 INFO L226 Difference]: Without dead ends: 132 [2021-11-16 20:00:59,041 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=337, Unknown=0, NotChecked=0, Total=380 [2021-11-16 20:00:59,041 INFO L933 BasicCegarLoop]: 99 mSDtfsCounter, 26 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-16 20:00:59,041 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 560 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-16 20:00:59,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-11-16 20:00:59,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 127. [2021-11-16 20:00:59,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 72 states have (on average 1.1666666666666667) internal successors, (84), 73 states have internal predecessors, (84), 41 states have call successors, (41), 12 states have call predecessors, (41), 13 states have return successors, (45), 42 states have call predecessors, (45), 40 states have call successors, (45) [2021-11-16 20:00:59,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 170 transitions. [2021-11-16 20:00:59,047 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 170 transitions. Word has length 82 [2021-11-16 20:00:59,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:00:59,048 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 170 transitions. [2021-11-16 20:00:59,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-16 20:00:59,048 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 170 transitions. [2021-11-16 20:00:59,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-16 20:00:59,049 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:00:59,049 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 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] [2021-11-16 20:00:59,073 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-16 20:00:59,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:00:59,276 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:00:59,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:00:59,277 INFO L85 PathProgramCache]: Analyzing trace with hash 90143423, now seen corresponding path program 1 times [2021-11-16 20:00:59,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:00:59,277 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257629455] [2021-11-16 20:00:59,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:00:59,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:00:59,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:59,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 20:00:59,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:59,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-16 20:00:59,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:59,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:00:59,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:59,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 20:00:59,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:59,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:00:59,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:59,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-16 20:00:59,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:59,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-11-16 20:00:59,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:59,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-16 20:00:59,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:59,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-11-16 20:00:59,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:59,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-16 20:00:59,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:59,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-11-16 20:00:59,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:59,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:00:59,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:59,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 20:00:59,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:59,749 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-11-16 20:00:59,749 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:00:59,749 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257629455] [2021-11-16 20:00:59,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257629455] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-16 20:00:59,749 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094765750] [2021-11-16 20:00:59,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:00:59,749 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:00:59,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 20:00:59,768 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-16 20:00:59,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-16 20:01:00,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:01:00,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 2498 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-16 20:01:00,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 20:01:00,553 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-16 20:01:00,553 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-16 20:01:01,236 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-16 20:01:01,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1094765750] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-16 20:01:01,236 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-16 20:01:01,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [20, 14] total 42 [2021-11-16 20:01:01,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105836014] [2021-11-16 20:01:01,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 20:01:01,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-16 20:01:01,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:01:01,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-16 20:01:01,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=1593, Unknown=0, NotChecked=0, Total=1722 [2021-11-16 20:01:01,238 INFO L87 Difference]: Start difference. First operand 127 states and 170 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 12 states have internal predecessors, (36), 7 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 7 states have call predecessors, (13), 6 states have call successors, (13) [2021-11-16 20:01:01,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:01:01,977 INFO L93 Difference]: Finished difference Result 186 states and 254 transitions. [2021-11-16 20:01:01,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-16 20:01:01,978 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 12 states have internal predecessors, (36), 7 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 7 states have call predecessors, (13), 6 states have call successors, (13) Word has length 81 [2021-11-16 20:01:01,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:01:01,979 INFO L225 Difference]: With dead ends: 186 [2021-11-16 20:01:01,979 INFO L226 Difference]: Without dead ends: 154 [2021-11-16 20:01:01,980 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 474 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=189, Invalid=2361, Unknown=0, NotChecked=0, Total=2550 [2021-11-16 20:01:01,980 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 222 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 785 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 590 SdHoareTripleChecker+Invalid, 869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-16 20:01:01,981 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [242 Valid, 590 Invalid, 869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 785 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-16 20:01:01,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-11-16 20:01:01,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 126. [2021-11-16 20:01:01,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 69 states have (on average 1.1594202898550725) internal successors, (80), 71 states have internal predecessors, (80), 43 states have call successors, (43), 11 states have call predecessors, (43), 13 states have return successors, (53), 44 states have call predecessors, (53), 42 states have call successors, (53) [2021-11-16 20:01:01,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 176 transitions. [2021-11-16 20:01:01,996 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 176 transitions. Word has length 81 [2021-11-16 20:01:01,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:01:01,997 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 176 transitions. [2021-11-16 20:01:01,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 12 states have internal predecessors, (36), 7 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 7 states have call predecessors, (13), 6 states have call successors, (13) [2021-11-16 20:01:01,998 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 176 transitions. [2021-11-16 20:01:01,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-16 20:01:01,999 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:01:01,999 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 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] [2021-11-16 20:01:02,033 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-16 20:01:02,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:01:02,214 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:01:02,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:01:02,215 INFO L85 PathProgramCache]: Analyzing trace with hash 61293748, now seen corresponding path program 1 times [2021-11-16 20:01:02,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:01:02,215 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893035772] [2021-11-16 20:01:02,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:01:02,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:01:02,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:01:02,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 20:01:02,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:01:02,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-16 20:01:02,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:01:02,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:01:02,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:01:02,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 20:01:02,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:01:02,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:01:02,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:01:02,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-16 20:01:02,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:01:02,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-11-16 20:01:02,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:01:02,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-16 20:01:02,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:01:02,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-16 20:01:02,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:01:02,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-16 20:01:02,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:01:02,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-16 20:01:02,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:01:02,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-11-16 20:01:02,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:01:02,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:01:02,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:01:02,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 20:01:02,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:01:02,630 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-16 20:01:02,630 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:01:02,630 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893035772] [2021-11-16 20:01:02,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893035772] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-16 20:01:02,631 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825920985] [2021-11-16 20:01:02,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:01:02,631 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:01:02,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 20:01:02,648 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-16 20:01:02,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-16 20:01:02,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:01:03,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 2519 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-16 20:01:03,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 20:01:03,406 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-11-16 20:01:03,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-16 20:01:03,883 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2021-11-16 20:01:03,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1825920985] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-16 20:01:03,883 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-16 20:01:03,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 13, 13] total 40 [2021-11-16 20:01:03,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072725535] [2021-11-16 20:01:03,884 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-16 20:01:03,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-11-16 20:01:03,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:01:03,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-11-16 20:01:03,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=1440, Unknown=0, NotChecked=0, Total=1560 [2021-11-16 20:01:03,885 INFO L87 Difference]: Start difference. First operand 126 states and 176 transitions. Second operand has 40 states, 35 states have (on average 2.342857142857143) internal successors, (82), 30 states have internal predecessors, (82), 14 states have call successors, (33), 6 states have call predecessors, (33), 11 states have return successors, (30), 15 states have call predecessors, (30), 12 states have call successors, (30) [2021-11-16 20:01:05,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:01:05,186 INFO L93 Difference]: Finished difference Result 190 states and 267 transitions. [2021-11-16 20:01:05,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-16 20:01:05,187 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 35 states have (on average 2.342857142857143) internal successors, (82), 30 states have internal predecessors, (82), 14 states have call successors, (33), 6 states have call predecessors, (33), 11 states have return successors, (30), 15 states have call predecessors, (30), 12 states have call successors, (30) Word has length 88 [2021-11-16 20:01:05,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:01:05,188 INFO L225 Difference]: With dead ends: 190 [2021-11-16 20:01:05,188 INFO L226 Difference]: Without dead ends: 158 [2021-11-16 20:01:05,189 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 525 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=274, Invalid=2806, Unknown=0, NotChecked=0, Total=3080 [2021-11-16 20:01:05,190 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 294 mSDsluCounter, 652 mSDsCounter, 0 mSdLazyCounter, 2211 mSolverCounterSat, 311 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 2522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 311 IncrementalHoareTripleChecker+Valid, 2211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-16 20:01:05,190 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [294 Valid, 725 Invalid, 2522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [311 Valid, 2211 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-16 20:01:05,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-11-16 20:01:05,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 128. [2021-11-16 20:01:05,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 70 states have (on average 1.1571428571428573) internal successors, (81), 72 states have internal predecessors, (81), 44 states have call successors, (44), 11 states have call predecessors, (44), 13 states have return successors, (55), 45 states have call predecessors, (55), 43 states have call successors, (55) [2021-11-16 20:01:05,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 180 transitions. [2021-11-16 20:01:05,200 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 180 transitions. Word has length 88 [2021-11-16 20:01:05,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:01:05,200 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 180 transitions. [2021-11-16 20:01:05,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 35 states have (on average 2.342857142857143) internal successors, (82), 30 states have internal predecessors, (82), 14 states have call successors, (33), 6 states have call predecessors, (33), 11 states have return successors, (30), 15 states have call predecessors, (30), 12 states have call successors, (30) [2021-11-16 20:01:05,201 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 180 transitions. [2021-11-16 20:01:05,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-16 20:01:05,202 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:01:05,202 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 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] [2021-11-16 20:01:05,224 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-16 20:01:05,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:01:05,421 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:01:05,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:01:05,421 INFO L85 PathProgramCache]: Analyzing trace with hash 2091441181, now seen corresponding path program 1 times [2021-11-16 20:01:05,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:01:05,421 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068190380] [2021-11-16 20:01:05,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:01:05,422 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:01:05,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:01:05,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 20:01:05,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:01:05,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-16 20:01:05,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:01:05,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:01:05,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:01:05,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 20:01:05,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:01:05,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:01:05,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:01:05,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-16 20:01:05,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:01:05,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-11-16 20:01:05,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:01:05,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-16 20:01:05,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:01:05,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-11-16 20:01:05,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:01:05,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-16 20:01:05,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:01:05,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-11-16 20:01:05,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:01:05,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:01:05,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:01:05,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 20:01:05,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:01:05,709 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2021-11-16 20:01:05,709 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:01:05,709 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068190380] [2021-11-16 20:01:05,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068190380] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 20:01:05,710 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 20:01:05,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-16 20:01:05,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797558386] [2021-11-16 20:01:05,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 20:01:05,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-16 20:01:05,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:01:05,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-16 20:01:05,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2021-11-16 20:01:05,711 INFO L87 Difference]: Start difference. First operand 128 states and 180 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 8 states have internal predecessors, (34), 4 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 5 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-16 20:01:06,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:01:06,199 INFO L93 Difference]: Finished difference Result 175 states and 247 transitions. [2021-11-16 20:01:06,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-16 20:01:06,200 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 8 states have internal predecessors, (34), 4 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 5 states have call predecessors, (13), 3 states have call successors, (13) Word has length 82 [2021-11-16 20:01:06,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:01:06,201 INFO L225 Difference]: With dead ends: 175 [2021-11-16 20:01:06,201 INFO L226 Difference]: Without dead ends: 151 [2021-11-16 20:01:06,201 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2021-11-16 20:01:06,202 INFO L933 BasicCegarLoop]: 118 mSDtfsCounter, 103 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 746 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-16 20:01:06,202 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 746 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 580 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-16 20:01:06,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-11-16 20:01:06,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 136. [2021-11-16 20:01:06,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 77 states have (on average 1.1688311688311688) internal successors, (90), 78 states have internal predecessors, (90), 45 states have call successors, (45), 11 states have call predecessors, (45), 13 states have return successors, (53), 47 states have call predecessors, (53), 44 states have call successors, (53) [2021-11-16 20:01:06,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 188 transitions. [2021-11-16 20:01:06,211 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 188 transitions. Word has length 82 [2021-11-16 20:01:06,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:01:06,211 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 188 transitions. [2021-11-16 20:01:06,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 8 states have internal predecessors, (34), 4 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 5 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-16 20:01:06,211 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 188 transitions. [2021-11-16 20:01:06,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-16 20:01:06,212 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:01:06,212 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 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] [2021-11-16 20:01:06,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-16 20:01:06,213 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:01:06,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:01:06,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1562553972, now seen corresponding path program 1 times [2021-11-16 20:01:06,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:01:06,213 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049294256] [2021-11-16 20:01:06,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:01:06,214 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:01:06,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:01:06,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 20:01:06,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:01:06,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-16 20:01:06,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:01:06,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:01:06,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:01:06,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-16 20:01:06,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:01:06,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-16 20:01:06,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:01:06,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-16 20:01:06,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:01:06,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:01:06,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:01:06,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-16 20:01:06,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:01:06,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-11-16 20:01:06,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:01:06,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-16 20:01:06,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:01:06,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-11-16 20:01:06,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:01:06,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-11-16 20:01:06,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:01:06,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:01:06,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:01:06,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 20:01:06,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:01:06,434 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2021-11-16 20:01:06,434 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:01:06,434 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049294256] [2021-11-16 20:01:06,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049294256] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 20:01:06,434 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 20:01:06,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-16 20:01:06,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74954259] [2021-11-16 20:01:06,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 20:01:06,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-16 20:01:06,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:01:06,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-16 20:01:06,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-16 20:01:06,436 INFO L87 Difference]: Start difference. First operand 136 states and 188 transitions. Second operand has 8 states, 8 states have (on average 4.125) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-16 20:01:06,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:01:06,821 INFO L93 Difference]: Finished difference Result 186 states and 266 transitions. [2021-11-16 20:01:06,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-16 20:01:06,821 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) Word has length 86 [2021-11-16 20:01:06,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:01:06,823 INFO L225 Difference]: With dead ends: 186 [2021-11-16 20:01:06,823 INFO L226 Difference]: Without dead ends: 159 [2021-11-16 20:01:06,824 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-11-16 20:01:06,824 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 78 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-16 20:01:06,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 536 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-16 20:01:06,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-11-16 20:01:06,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2021-11-16 20:01:06,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 89 states have (on average 1.1685393258426966) internal successors, (104), 89 states have internal predecessors, (104), 56 states have call successors, (56), 11 states have call predecessors, (56), 13 states have return successors, (64), 59 states have call predecessors, (64), 54 states have call successors, (64) [2021-11-16 20:01:06,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 224 transitions. [2021-11-16 20:01:06,837 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 224 transitions. Word has length 86 [2021-11-16 20:01:06,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:01:06,839 INFO L470 AbstractCegarLoop]: Abstraction has 159 states and 224 transitions. [2021-11-16 20:01:06,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-16 20:01:06,839 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 224 transitions. [2021-11-16 20:01:06,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-16 20:01:06,840 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:01:06,840 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 3, 3, 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] [2021-11-16 20:01:06,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-16 20:01:06,840 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:01:06,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:01:06,841 INFO L85 PathProgramCache]: Analyzing trace with hash -300752561, now seen corresponding path program 1 times [2021-11-16 20:01:06,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:01:06,841 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131203349] [2021-11-16 20:01:06,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:01:06,842 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:01:06,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:01:07,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 20:01:07,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:01:07,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-16 20:01:07,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:01:07,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:01:07,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:01:07,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-16 20:01:07,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:01:07,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-16 20:01:07,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:01:07,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-16 20:01:07,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:01:07,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:01:07,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:01:07,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 20:01:07,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:01:07,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:01:07,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:01:07,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-16 20:01:07,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:01:07,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-11-16 20:01:07,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:01:07,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-16 20:01:07,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:01:07,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-16 20:01:07,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:01:07,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-16 20:01:07,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:01:07,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:01:07,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:01:07,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 20:01:07,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:01:07,285 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-11-16 20:01:07,286 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:01:07,286 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131203349] [2021-11-16 20:01:07,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131203349] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-16 20:01:07,286 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570215271] [2021-11-16 20:01:07,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:01:07,286 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:01:07,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 20:01:07,312 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-16 20:01:07,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-16 20:01:07,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:01:07,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 2533 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-16 20:01:07,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 20:01:08,069 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 3 proven. 52 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-11-16 20:01:08,069 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-16 20:01:08,651 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2021-11-16 20:01:08,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1570215271] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-16 20:01:08,651 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-16 20:01:08,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [20, 13] total 40 [2021-11-16 20:01:08,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999799193] [2021-11-16 20:01:08,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 20:01:08,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-16 20:01:08,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:01:08,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-16 20:01:08,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=1440, Unknown=0, NotChecked=0, Total=1560 [2021-11-16 20:01:08,652 INFO L87 Difference]: Start difference. First operand 159 states and 224 transitions. Second operand has 13 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 11 states have internal predecessors, (40), 6 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) [2021-11-16 20:01:09,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:01:09,180 INFO L93 Difference]: Finished difference Result 202 states and 288 transitions. [2021-11-16 20:01:09,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-16 20:01:09,180 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 11 states have internal predecessors, (40), 6 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) Word has length 97 [2021-11-16 20:01:09,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:01:09,181 INFO L225 Difference]: With dead ends: 202 [2021-11-16 20:01:09,181 INFO L226 Difference]: Without dead ends: 180 [2021-11-16 20:01:09,182 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=171, Invalid=2085, Unknown=0, NotChecked=0, Total=2256 [2021-11-16 20:01:09,182 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 152 mSDsluCounter, 675 mSDsCounter, 0 mSdLazyCounter, 697 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 796 SdHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-16 20:01:09,183 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 796 Invalid, 748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 697 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-16 20:01:09,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-11-16 20:01:09,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 159. [2021-11-16 20:01:09,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 89 states have (on average 1.1685393258426966) internal successors, (104), 89 states have internal predecessors, (104), 56 states have call successors, (56), 11 states have call predecessors, (56), 13 states have return successors, (63), 59 states have call predecessors, (63), 54 states have call successors, (63) [2021-11-16 20:01:09,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 223 transitions. [2021-11-16 20:01:09,190 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 223 transitions. Word has length 97 [2021-11-16 20:01:09,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:01:09,190 INFO L470 AbstractCegarLoop]: Abstraction has 159 states and 223 transitions. [2021-11-16 20:01:09,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 11 states have internal predecessors, (40), 6 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) [2021-11-16 20:01:09,191 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 223 transitions. [2021-11-16 20:01:09,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-16 20:01:09,191 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:01:09,191 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 20:01:09,210 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-11-16 20:01:09,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:01:09,408 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:01:09,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:01:09,408 INFO L85 PathProgramCache]: Analyzing trace with hash -522577770, now seen corresponding path program 1 times [2021-11-16 20:01:09,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:01:09,408 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818650084] [2021-11-16 20:01:09,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:01:09,408 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:01:10,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:01:27,173 WARN L227 SmtUtils]: Spent 8.14s on a formula simplification. DAG size of input: 128 DAG size of output: 76 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-16 20:01:54,683 WARN L227 SmtUtils]: Spent 14.56s on a formula simplification. DAG size of input: 157 DAG size of output: 76 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-16 20:02:14,451 WARN L227 SmtUtils]: Spent 13.48s on a formula simplification. DAG size of input: 153 DAG size of output: 77 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-16 20:02:14,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 20:02:14,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:02:14,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-16 20:02:14,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:02:14,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:02:14,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:02:14,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-16 20:02:14,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:02:14,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-16 20:02:14,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:02:14,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-16 20:02:14,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:02:14,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:02:14,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:02:14,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 20:02:14,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:02:14,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:02:14,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:02:14,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-16 20:02:14,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:02:14,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-11-16 20:02:14,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Killed by 15