./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_hash_table_clean_up_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4d014703 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_hash_table_clean_up_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 3bf4efa014e51efebc29a26fae4d93bdd4ac97a340040c60e527138ec3a88197 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-4d01470 [2021-11-02 13:22:42,177 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 13:22:42,180 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 13:22:42,236 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 13:22:42,236 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 13:22:42,237 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 13:22:42,238 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 13:22:42,239 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 13:22:42,240 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 13:22:42,241 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 13:22:42,242 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 13:22:42,243 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 13:22:42,246 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 13:22:42,252 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 13:22:42,254 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 13:22:42,255 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 13:22:42,257 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 13:22:42,260 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 13:22:42,262 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 13:22:42,267 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 13:22:42,270 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 13:22:42,281 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 13:22:42,282 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 13:22:42,283 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 13:22:42,284 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 13:22:42,287 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 13:22:42,288 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 13:22:42,288 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 13:22:42,289 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 13:22:42,290 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 13:22:42,290 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 13:22:42,291 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 13:22:42,291 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 13:22:42,292 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 13:22:42,292 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 13:22:42,293 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 13:22:42,293 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 13:22:42,293 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 13:22:42,294 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 13:22:42,295 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 13:22:42,296 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 13:22:42,297 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-02 13:22:42,311 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 13:22:42,312 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 13:22:42,312 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 13:22:42,312 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 13:22:42,313 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 13:22:42,313 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 13:22:42,313 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 13:22:42,314 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 13:22:42,314 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 13:22:42,314 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 13:22:42,314 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 13:22:42,314 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 13:22:42,314 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 13:22:42,314 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 13:22:42,314 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 13:22:42,315 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 13:22:42,315 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 13:22:42,315 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 13:22:42,315 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 13:22:42,315 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 13:22:42,315 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 13:22:42,316 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 13:22:42,316 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 13:22:42,316 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 13:22:42,316 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 13:22:42,316 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 13:22:42,316 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 13:22:42,317 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 13:22:42,318 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 13:22:42,318 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3bf4efa014e51efebc29a26fae4d93bdd4ac97a340040c60e527138ec3a88197 [2021-11-02 13:22:42,505 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 13:22:42,525 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 13:22:42,527 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 13:22:42,529 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 13:22:42,530 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 13:22:42,532 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_hash_table_clean_up_harness.i [2021-11-02 13:22:42,592 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24d600c55/5c07b1735e61456daf836c5f83b4ce69/FLAG09749981d [2021-11-02 13:22:43,316 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 13:22:43,317 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_clean_up_harness.i [2021-11-02 13:22:43,360 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24d600c55/5c07b1735e61456daf836c5f83b4ce69/FLAG09749981d [2021-11-02 13:22:43,395 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24d600c55/5c07b1735e61456daf836c5f83b4ce69 [2021-11-02 13:22:43,397 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 13:22:43,398 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 13:22:43,403 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 13:22:43,404 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 13:22:43,406 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 13:22:43,407 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 01:22:43" (1/1) ... [2021-11-02 13:22:43,409 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ee9637b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:22:43, skipping insertion in model container [2021-11-02 13:22:43,410 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 01:22:43" (1/1) ... [2021-11-02 13:22:43,415 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 13:22:43,507 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 13:22:43,772 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_clean_up_harness.i[4497,4510] [2021-11-02 13:22:43,780 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_clean_up_harness.i[4557,4570] [2021-11-02 13:22:43,804 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-02 13:22:43,809 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-02 13:22:44,527 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:44,528 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:44,528 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:44,529 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:44,530 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:44,537 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:44,537 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:44,539 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:44,539 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:44,540 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:44,540 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:44,541 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:44,541 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:44,858 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-02 13:22:44,859 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-02 13:22:44,864 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-02 13:22:44,866 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-02 13:22:44,867 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-02 13:22:44,868 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-02 13:22:44,868 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-02 13:22:44,873 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-02 13:22:44,874 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-02 13:22:44,875 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-02 13:22:45,005 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-02 13:22:45,296 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:45,298 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:45,332 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:45,333 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:45,339 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:45,352 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:45,366 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:45,367 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:45,369 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:45,369 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:45,370 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:45,370 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:45,370 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:45,409 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 13:22:45,442 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 13:22:45,460 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_clean_up_harness.i[4497,4510] [2021-11-02 13:22:45,461 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_clean_up_harness.i[4557,4570] [2021-11-02 13:22:45,462 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-02 13:22:45,463 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-02 13:22:45,491 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:45,492 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:45,492 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:45,492 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:45,493 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:45,500 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:45,501 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:45,502 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:45,503 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:45,503 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:45,504 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:45,504 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:45,504 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:45,528 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-02 13:22:45,529 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-02 13:22:45,530 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-02 13:22:45,531 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-02 13:22:45,532 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-02 13:22:45,532 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-02 13:22:45,532 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-02 13:22:45,533 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-02 13:22:45,533 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-02 13:22:45,533 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-02 13:22:45,563 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-02 13:22:45,652 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:45,652 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:45,657 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:45,658 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:45,660 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:45,660 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:45,670 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:45,670 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:45,671 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:45,672 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:45,672 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:45,673 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:45,673 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:45,687 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 13:22:45,832 INFO L208 MainTranslator]: Completed translation [2021-11-02 13:22:45,833 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:22:45 WrapperNode [2021-11-02 13:22:45,833 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 13:22:45,834 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 13:22:45,834 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 13:22:45,834 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 13:22:45,839 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:22:45" (1/1) ... [2021-11-02 13:22:45,949 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:22:45" (1/1) ... [2021-11-02 13:22:46,034 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 13:22:46,036 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 13:22:46,036 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 13:22:46,036 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 13:22:46,042 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:22:45" (1/1) ... [2021-11-02 13:22:46,043 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:22:45" (1/1) ... [2021-11-02 13:22:46,055 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:22:45" (1/1) ... [2021-11-02 13:22:46,056 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:22:45" (1/1) ... [2021-11-02 13:22:46,095 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:22:45" (1/1) ... [2021-11-02 13:22:46,108 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:22:45" (1/1) ... [2021-11-02 13:22:46,114 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:22:45" (1/1) ... [2021-11-02 13:22:46,128 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 13:22:46,134 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 13:22:46,134 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 13:22:46,134 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 13:22:46,135 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:22:45" (1/1) ... [2021-11-02 13:22:46,152 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 13:22:46,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 13:22:46,180 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) [2021-11-02 13:22:46,203 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 [2021-11-02 13:22:46,216 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-11-02 13:22:46,217 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 13:22:46,217 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 13:22:46,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 13:22:46,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 13:22:46,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 13:22:46,218 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_uaddl_overflow [2021-11-02 13:22:46,218 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 13:22:46,218 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-02 13:22:46,219 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 13:22:46,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 13:22:46,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 13:22:46,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-02 13:22:46,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 13:22:50,552 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 13:22:50,552 INFO L299 CfgBuilder]: Removed 144 assume(true) statements. [2021-11-02 13:22:50,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 01:22:50 BoogieIcfgContainer [2021-11-02 13:22:50,553 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 13:22:50,555 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 13:22:50,555 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 13:22:50,557 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 13:22:50,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 01:22:43" (1/3) ... [2021-11-02 13:22:50,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@117273e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 01:22:50, skipping insertion in model container [2021-11-02 13:22:50,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:22:45" (2/3) ... [2021-11-02 13:22:50,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@117273e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 01:22:50, skipping insertion in model container [2021-11-02 13:22:50,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 01:22:50" (3/3) ... [2021-11-02 13:22:50,559 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_table_clean_up_harness.i [2021-11-02 13:22:50,562 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 13:22:50,562 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-02 13:22:50,590 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 13:22:50,594 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 [2021-11-02 13:22:50,594 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-02 13:22:50,615 INFO L276 IsEmpty]: Start isEmpty. Operand has 150 states, 143 states have (on average 1.4055944055944056) internal successors, (201), 149 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:22:50,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-02 13:22:50,620 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:22:50,620 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:22:50,621 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 13:22:50,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:22:50,624 INFO L85 PathProgramCache]: Analyzing trace with hash 937862733, now seen corresponding path program 1 times [2021-11-02 13:22:50,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:22:50,630 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099954353] [2021-11-02 13:22:50,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:22:50,631 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:22:50,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:22:51,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:22:51,054 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:22:51,054 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099954353] [2021-11-02 13:22:51,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099954353] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:22:51,055 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:22:51,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 13:22:51,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265038954] [2021-11-02 13:22:51,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-02 13:22:51,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:22:51,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-02 13:22:51,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 13:22:51,089 INFO L87 Difference]: Start difference. First operand has 150 states, 143 states have (on average 1.4055944055944056) internal successors, (201), 149 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:22:53,148 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:22:54,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:22:54,165 INFO L93 Difference]: Finished difference Result 296 states and 397 transitions. [2021-11-02 13:22:54,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-02 13:22:54,168 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-11-02 13:22:54,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:22:54,174 INFO L225 Difference]: With dead ends: 296 [2021-11-02 13:22:54,174 INFO L226 Difference]: Without dead ends: 144 [2021-11-02 13:22:54,176 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 13:22:54,179 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2708.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.30ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3011.15ms IncrementalHoareTripleChecker+Time [2021-11-02 13:22:54,179 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 178 Unknown, 0 Unchecked, 3.30ms Time], IncrementalHoareTripleChecker [0 Valid, 177 Invalid, 1 Unknown, 0 Unchecked, 3011.15ms Time] [2021-11-02 13:22:54,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-11-02 13:22:54,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2021-11-02 13:22:54,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 138 states have (on average 1.2391304347826086) internal successors, (171), 143 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:22:54,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 171 transitions. [2021-11-02 13:22:54,230 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 171 transitions. Word has length 55 [2021-11-02 13:22:54,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:22:54,231 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 171 transitions. [2021-11-02 13:22:54,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:22:54,231 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 171 transitions. [2021-11-02 13:22:54,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-02 13:22:54,233 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:22:54,234 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:22:54,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 13:22:54,234 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 13:22:54,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:22:54,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1984184949, now seen corresponding path program 1 times [2021-11-02 13:22:54,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:22:54,237 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351162937] [2021-11-02 13:22:54,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:22:54,238 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:22:54,356 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 13:22:54,357 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1906837979] [2021-11-02 13:22:54,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:22:54,357 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:22:54,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 13:22:54,359 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) [2021-11-02 13:22:54,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-02 13:22:55,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:22:55,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 2472 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-02 13:22:55,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 13:22:55,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:22:55,440 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 13:22:55,440 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:22:55,440 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351162937] [2021-11-02 13:22:55,440 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 13:22:55,440 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906837979] [2021-11-02 13:22:55,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906837979] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:22:55,441 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:22:55,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 13:22:55,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780796641] [2021-11-02 13:22:55,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 13:22:55,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:22:55,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 13:22:55,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 13:22:55,443 INFO L87 Difference]: Start difference. First operand 144 states and 171 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:22:57,493 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:23:00,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:23:00,801 INFO L93 Difference]: Finished difference Result 398 states and 474 transitions. [2021-11-02 13:23:00,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 13:23:00,802 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-11-02 13:23:00,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:23:00,803 INFO L225 Difference]: With dead ends: 398 [2021-11-02 13:23:00,803 INFO L226 Difference]: Without dead ends: 276 [2021-11-02 13:23:00,804 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 130.03ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-02 13:23:00,804 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 311 mSDsluCounter, 643 mSDsCounter, 0 mSdLazyCounter, 969 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4785.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.57ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 969 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5201.48ms IncrementalHoareTripleChecker+Time [2021-11-02 13:23:00,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [311 Valid, 0 Invalid, 972 Unknown, 0 Unchecked, 19.57ms Time], IncrementalHoareTripleChecker [2 Valid, 969 Invalid, 1 Unknown, 0 Unchecked, 5201.48ms Time] [2021-11-02 13:23:00,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2021-11-02 13:23:00,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 147. [2021-11-02 13:23:00,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 141 states have (on average 1.2340425531914894) internal successors, (174), 146 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:23:00,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 174 transitions. [2021-11-02 13:23:00,812 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 174 transitions. Word has length 55 [2021-11-02 13:23:00,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:23:00,812 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 174 transitions. [2021-11-02 13:23:00,813 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:23:00,813 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 174 transitions. [2021-11-02 13:23:00,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-02 13:23:00,813 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:23:00,813 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:23:00,839 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-02 13:23:01,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:23:01,014 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 13:23:01,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:23:01,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1945028463, now seen corresponding path program 1 times [2021-11-02 13:23:01,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:23:01,015 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458278141] [2021-11-02 13:23:01,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:23:01,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:23:01,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:23:01,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:23:01,568 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:23:01,568 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458278141] [2021-11-02 13:23:01,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458278141] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:23:01,569 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:23:01,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-02 13:23:01,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906245458] [2021-11-02 13:23:01,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 13:23:01,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:23:01,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 13:23:01,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-02 13:23:01,570 INFO L87 Difference]: Start difference. First operand 147 states and 174 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:23:03,616 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:23:06,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:23:06,719 INFO L93 Difference]: Finished difference Result 262 states and 311 transitions. [2021-11-02 13:23:06,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-02 13:23:06,720 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-02 13:23:06,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:23:06,721 INFO L225 Difference]: With dead ends: 262 [2021-11-02 13:23:06,721 INFO L226 Difference]: Without dead ends: 153 [2021-11-02 13:23:06,722 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 461.00ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-11-02 13:23:06,723 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 369 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 830 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4418.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.86ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 830 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4813.18ms IncrementalHoareTripleChecker+Time [2021-11-02 13:23:06,723 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [369 Valid, 0 Invalid, 837 Unknown, 0 Unchecked, 14.86ms Time], IncrementalHoareTripleChecker [6 Valid, 830 Invalid, 1 Unknown, 0 Unchecked, 4813.18ms Time] [2021-11-02 13:23:06,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-11-02 13:23:06,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 149. [2021-11-02 13:23:06,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 143 states have (on average 1.2307692307692308) internal successors, (176), 148 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:23:06,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 176 transitions. [2021-11-02 13:23:06,729 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 176 transitions. Word has length 57 [2021-11-02 13:23:06,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:23:06,730 INFO L470 AbstractCegarLoop]: Abstraction has 149 states and 176 transitions. [2021-11-02 13:23:06,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:23:06,730 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 176 transitions. [2021-11-02 13:23:06,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-02 13:23:06,731 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:23:06,731 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:23:06,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 13:23:06,733 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 13:23:06,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:23:06,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1101022961, now seen corresponding path program 1 times [2021-11-02 13:23:06,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:23:06,734 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273111056] [2021-11-02 13:23:06,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:23:06,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:23:06,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:23:06,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:23:06,972 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:23:06,972 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273111056] [2021-11-02 13:23:06,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273111056] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:23:06,972 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:23:06,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 13:23:06,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413045143] [2021-11-02 13:23:06,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 13:23:06,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:23:06,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 13:23:06,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 13:23:06,973 INFO L87 Difference]: Start difference. First operand 149 states and 176 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:23:09,017 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:23:10,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:23:10,410 INFO L93 Difference]: Finished difference Result 261 states and 309 transitions. [2021-11-02 13:23:10,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 13:23:10,411 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-02 13:23:10,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:23:10,411 INFO L225 Difference]: With dead ends: 261 [2021-11-02 13:23:10,412 INFO L226 Difference]: Without dead ends: 147 [2021-11-02 13:23:10,412 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.15ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 13:23:10,413 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 147 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3065.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.33ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3400.20ms IncrementalHoareTripleChecker+Time [2021-11-02 13:23:10,413 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 0 Invalid, 337 Unknown, 0 Unchecked, 6.33ms Time], IncrementalHoareTripleChecker [1 Valid, 335 Invalid, 1 Unknown, 0 Unchecked, 3400.20ms Time] [2021-11-02 13:23:10,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-11-02 13:23:10,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2021-11-02 13:23:10,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 141 states have (on average 1.2198581560283688) internal successors, (172), 146 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:23:10,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 172 transitions. [2021-11-02 13:23:10,427 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 172 transitions. Word has length 57 [2021-11-02 13:23:10,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:23:10,428 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 172 transitions. [2021-11-02 13:23:10,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:23:10,428 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 172 transitions. [2021-11-02 13:23:10,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-02 13:23:10,429 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:23:10,429 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:23:10,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 13:23:10,429 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 13:23:10,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:23:10,430 INFO L85 PathProgramCache]: Analyzing trace with hash -2001669686, now seen corresponding path program 1 times [2021-11-02 13:23:10,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:23:10,430 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879243903] [2021-11-02 13:23:10,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:23:10,430 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:23:10,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:23:10,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:23:10,775 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:23:10,775 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879243903] [2021-11-02 13:23:10,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879243903] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:23:10,776 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:23:10,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 13:23:10,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027170278] [2021-11-02 13:23:10,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 13:23:10,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:23:10,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 13:23:10,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 13:23:10,778 INFO L87 Difference]: Start difference. First operand 147 states and 172 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:23:12,816 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:23:14,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:23:14,802 INFO L93 Difference]: Finished difference Result 260 states and 305 transitions. [2021-11-02 13:23:14,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 13:23:14,802 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-11-02 13:23:14,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:23:14,803 INFO L225 Difference]: With dead ends: 260 [2021-11-02 13:23:14,803 INFO L226 Difference]: Without dead ends: 150 [2021-11-02 13:23:14,804 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 375.38ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-02 13:23:14,805 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 158 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 24 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3399.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.71ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3742.44ms IncrementalHoareTripleChecker+Time [2021-11-02 13:23:14,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [158 Valid, 0 Invalid, 502 Unknown, 0 Unchecked, 5.71ms Time], IncrementalHoareTripleChecker [24 Valid, 477 Invalid, 1 Unknown, 0 Unchecked, 3742.44ms Time] [2021-11-02 13:23:14,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-11-02 13:23:14,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 147. [2021-11-02 13:23:14,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 141 states have (on average 1.1914893617021276) internal successors, (168), 146 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:23:14,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 168 transitions. [2021-11-02 13:23:14,813 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 168 transitions. Word has length 59 [2021-11-02 13:23:14,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:23:14,813 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 168 transitions. [2021-11-02 13:23:14,813 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:23:14,813 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 168 transitions. [2021-11-02 13:23:14,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-02 13:23:14,814 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:23:14,814 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:23:14,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-02 13:23:14,815 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 13:23:14,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:23:14,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1973786693, now seen corresponding path program 1 times [2021-11-02 13:23:14,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:23:14,815 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300986345] [2021-11-02 13:23:14,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:23:14,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:23:15,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:23:15,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:23:15,573 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:23:15,574 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300986345] [2021-11-02 13:23:15,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300986345] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:23:15,574 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:23:15,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 13:23:15,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374102093] [2021-11-02 13:23:15,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 13:23:15,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:23:15,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 13:23:15,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 13:23:15,575 INFO L87 Difference]: Start difference. First operand 147 states and 168 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:23:17,612 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:23:20,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:23:20,383 INFO L93 Difference]: Finished difference Result 161 states and 183 transitions. [2021-11-02 13:23:20,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 13:23:20,384 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-02 13:23:20,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:23:20,385 INFO L225 Difference]: With dead ends: 161 [2021-11-02 13:23:20,385 INFO L226 Difference]: Without dead ends: 157 [2021-11-02 13:23:20,385 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 396.91ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-02 13:23:20,386 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 189 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 637 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4030.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.01ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 637 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4494.29ms IncrementalHoareTripleChecker+Time [2021-11-02 13:23:20,386 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [189 Valid, 0 Invalid, 645 Unknown, 0 Unchecked, 9.01ms Time], IncrementalHoareTripleChecker [7 Valid, 637 Invalid, 1 Unknown, 0 Unchecked, 4494.29ms Time] [2021-11-02 13:23:20,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-11-02 13:23:20,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 143. [2021-11-02 13:23:20,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 139 states have (on average 1.1798561151079137) internal successors, (164), 142 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:23:20,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 164 transitions. [2021-11-02 13:23:20,392 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 164 transitions. Word has length 60 [2021-11-02 13:23:20,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:23:20,393 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 164 transitions. [2021-11-02 13:23:20,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:23:20,393 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 164 transitions. [2021-11-02 13:23:20,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-02 13:23:20,394 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:23:20,394 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:23:20,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-02 13:23:20,394 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 13:23:20,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:23:20,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1344954047, now seen corresponding path program 1 times [2021-11-02 13:23:20,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:23:20,395 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433399041] [2021-11-02 13:23:20,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:23:20,395 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:23:20,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:23:22,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:23:22,901 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:23:22,901 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433399041] [2021-11-02 13:23:22,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433399041] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:23:22,901 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:23:22,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-11-02 13:23:22,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142173490] [2021-11-02 13:23:22,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-02 13:23:22,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:23:22,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-02 13:23:22,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2021-11-02 13:23:22,903 INFO L87 Difference]: Start difference. First operand 143 states and 164 transitions. Second operand has 21 states, 21 states have (on average 3.142857142857143) internal successors, (66), 21 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:23:24,940 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:23:34,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:23:34,484 INFO L93 Difference]: Finished difference Result 174 states and 195 transitions. [2021-11-02 13:23:34,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-02 13:23:34,485 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.142857142857143) internal successors, (66), 21 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-02 13:23:34,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:23:34,486 INFO L225 Difference]: With dead ends: 174 [2021-11-02 13:23:34,486 INFO L226 Difference]: Without dead ends: 164 [2021-11-02 13:23:34,487 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 4206.75ms TimeCoverageRelationStatistics Valid=249, Invalid=1083, Unknown=0, NotChecked=0, Total=1332 [2021-11-02 13:23:34,487 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 775 mSDsluCounter, 1270 mSDsCounter, 0 mSdLazyCounter, 1992 mSolverCounterSat, 59 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7928.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 775 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 35.08ms SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1992 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8637.11ms IncrementalHoareTripleChecker+Time [2021-11-02 13:23:34,488 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [775 Valid, 0 Invalid, 2052 Unknown, 0 Unchecked, 35.08ms Time], IncrementalHoareTripleChecker [59 Valid, 1992 Invalid, 1 Unknown, 0 Unchecked, 8637.11ms Time] [2021-11-02 13:23:34,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-11-02 13:23:34,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 143. [2021-11-02 13:23:34,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 139 states have (on average 1.1726618705035972) internal successors, (163), 142 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:23:34,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 163 transitions. [2021-11-02 13:23:34,495 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 163 transitions. Word has length 66 [2021-11-02 13:23:34,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:23:34,495 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 163 transitions. [2021-11-02 13:23:34,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.142857142857143) internal successors, (66), 21 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:23:34,495 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 163 transitions. [2021-11-02 13:23:34,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-02 13:23:34,496 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:23:34,496 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:23:34,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-02 13:23:34,497 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 13:23:34,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:23:34,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1471234926, now seen corresponding path program 1 times [2021-11-02 13:23:34,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:23:34,497 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019116430] [2021-11-02 13:23:34,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:23:34,498 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:23:34,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:23:34,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:23:34,819 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:23:34,819 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019116430] [2021-11-02 13:23:34,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019116430] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:23:34,819 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:23:34,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 13:23:34,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216150070] [2021-11-02 13:23:34,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 13:23:34,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:23:34,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 13:23:34,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 13:23:34,820 INFO L87 Difference]: Start difference. First operand 143 states and 163 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:23:37,353 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.53s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:23:39,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:23:39,690 INFO L93 Difference]: Finished difference Result 215 states and 246 transitions. [2021-11-02 13:23:39,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 13:23:39,690 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-02 13:23:39,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:23:39,691 INFO L225 Difference]: With dead ends: 215 [2021-11-02 13:23:39,692 INFO L226 Difference]: Without dead ends: 143 [2021-11-02 13:23:39,692 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 143.61ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-02 13:23:39,693 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 25 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4339.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.65ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4790.91ms IncrementalHoareTripleChecker+Time [2021-11-02 13:23:39,693 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 0 Invalid, 601 Unknown, 0 Unchecked, 6.65ms Time], IncrementalHoareTripleChecker [1 Valid, 599 Invalid, 1 Unknown, 0 Unchecked, 4790.91ms Time] [2021-11-02 13:23:39,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-11-02 13:23:39,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2021-11-02 13:23:39,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 139 states have (on average 1.1654676258992807) internal successors, (162), 142 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:23:39,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 162 transitions. [2021-11-02 13:23:39,699 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 162 transitions. Word has length 71 [2021-11-02 13:23:39,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:23:39,700 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 162 transitions. [2021-11-02 13:23:39,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:23:39,700 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 162 transitions. [2021-11-02 13:23:39,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-02 13:23:39,701 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:23:39,701 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:23:39,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-02 13:23:39,701 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 13:23:39,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:23:39,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1507166216, now seen corresponding path program 1 times [2021-11-02 13:23:39,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:23:39,702 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564958659] [2021-11-02 13:23:39,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:23:39,702 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:23:39,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:23:40,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:23:40,137 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:23:40,137 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564958659] [2021-11-02 13:23:40,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564958659] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:23:40,137 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:23:40,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 13:23:40,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388035782] [2021-11-02 13:23:40,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 13:23:40,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:23:40,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 13:23:40,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-02 13:23:40,138 INFO L87 Difference]: Start difference. First operand 143 states and 162 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:23:42,178 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:23:44,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:23:44,553 INFO L93 Difference]: Finished difference Result 233 states and 266 transitions. [2021-11-02 13:23:44,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 13:23:44,553 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-11-02 13:23:44,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:23:44,554 INFO L225 Difference]: With dead ends: 233 [2021-11-02 13:23:44,554 INFO L226 Difference]: Without dead ends: 159 [2021-11-02 13:23:44,555 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 431.73ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-02 13:23:44,555 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 157 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3751.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.08ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4090.03ms IncrementalHoareTripleChecker+Time [2021-11-02 13:23:44,555 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [157 Valid, 0 Invalid, 579 Unknown, 0 Unchecked, 7.08ms Time], IncrementalHoareTripleChecker [9 Valid, 569 Invalid, 1 Unknown, 0 Unchecked, 4090.03ms Time] [2021-11-02 13:23:44,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-11-02 13:23:44,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 147. [2021-11-02 13:23:44,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 143 states have (on average 1.1608391608391608) internal successors, (166), 146 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:23:44,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 166 transitions. [2021-11-02 13:23:44,562 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 166 transitions. Word has length 76 [2021-11-02 13:23:44,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:23:44,562 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 166 transitions. [2021-11-02 13:23:44,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:23:44,563 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 166 transitions. [2021-11-02 13:23:44,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-02 13:23:44,563 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:23:44,563 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:23:44,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-02 13:23:44,564 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 13:23:44,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:23:44,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1309389368, now seen corresponding path program 1 times [2021-11-02 13:23:44,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:23:44,565 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801750427] [2021-11-02 13:23:44,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:23:44,565 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:23:44,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:23:44,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:23:44,920 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:23:44,920 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801750427] [2021-11-02 13:23:44,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801750427] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:23:44,920 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:23:44,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 13:23:44,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748776235] [2021-11-02 13:23:44,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 13:23:44,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:23:44,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 13:23:44,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-02 13:23:44,921 INFO L87 Difference]: Start difference. First operand 147 states and 166 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:23:47,456 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.53s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:23:49,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:23:49,089 INFO L93 Difference]: Finished difference Result 224 states and 253 transitions. [2021-11-02 13:23:49,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 13:23:49,090 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-11-02 13:23:49,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:23:49,091 INFO L225 Difference]: With dead ends: 224 [2021-11-02 13:23:49,091 INFO L226 Difference]: Without dead ends: 143 [2021-11-02 13:23:49,091 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 256.23ms TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-02 13:23:49,092 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 369 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3598.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.86ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4000.96ms IncrementalHoareTripleChecker+Time [2021-11-02 13:23:49,092 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [369 Valid, 0 Invalid, 379 Unknown, 0 Unchecked, 6.86ms Time], IncrementalHoareTripleChecker [12 Valid, 366 Invalid, 1 Unknown, 0 Unchecked, 4000.96ms Time] [2021-11-02 13:23:49,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-11-02 13:23:49,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2021-11-02 13:23:49,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 139 states have (on average 1.1366906474820144) internal successors, (158), 142 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:23:49,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 158 transitions. [2021-11-02 13:23:49,099 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 158 transitions. Word has length 76 [2021-11-02 13:23:49,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:23:49,099 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 158 transitions. [2021-11-02 13:23:49,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:23:49,100 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 158 transitions. [2021-11-02 13:23:49,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-02 13:23:49,101 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:23:49,101 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:23:49,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-02 13:23:49,101 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 13:23:49,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:23:49,112 INFO L85 PathProgramCache]: Analyzing trace with hash -630391455, now seen corresponding path program 1 times [2021-11-02 13:23:49,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:23:49,112 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204964874] [2021-11-02 13:23:49,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:23:49,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:23:49,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:23:49,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:23:49,312 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:23:49,312 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204964874] [2021-11-02 13:23:49,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204964874] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:23:49,312 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:23:49,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 13:23:49,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178578867] [2021-11-02 13:23:49,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 13:23:49,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:23:49,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 13:23:49,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 13:23:49,314 INFO L87 Difference]: Start difference. First operand 143 states and 158 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:23:51,631 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:23:52,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:23:52,956 INFO L93 Difference]: Finished difference Result 191 states and 210 transitions. [2021-11-02 13:23:52,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 13:23:52,956 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-02 13:23:52,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:23:52,957 INFO L225 Difference]: With dead ends: 191 [2021-11-02 13:23:52,957 INFO L226 Difference]: Without dead ends: 144 [2021-11-02 13:23:52,958 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.91ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 13:23:52,959 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3221.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.33ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3612.21ms IncrementalHoareTripleChecker+Time [2021-11-02 13:23:52,959 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 308 Unknown, 0 Unchecked, 2.33ms Time], IncrementalHoareTripleChecker [0 Valid, 307 Invalid, 1 Unknown, 0 Unchecked, 3612.21ms Time] [2021-11-02 13:23:52,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-11-02 13:23:52,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2021-11-02 13:23:52,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 140 states have (on average 1.1357142857142857) internal successors, (159), 143 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:23:52,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 159 transitions. [2021-11-02 13:23:52,966 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 159 transitions. Word has length 82 [2021-11-02 13:23:52,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:23:52,967 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 159 transitions. [2021-11-02 13:23:52,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:23:52,967 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 159 transitions. [2021-11-02 13:23:52,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-02 13:23:52,968 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:23:52,968 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:23:52,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-02 13:23:52,968 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 13:23:52,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:23:52,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1144615907, now seen corresponding path program 1 times [2021-11-02 13:23:52,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:23:52,970 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232616882] [2021-11-02 13:23:52,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:23:52,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:23:53,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:23:53,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:23:53,330 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:23:53,330 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232616882] [2021-11-02 13:23:53,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232616882] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:23:53,330 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:23:53,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 13:23:53,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081566987] [2021-11-02 13:23:53,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 13:23:53,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:23:53,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 13:23:53,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 13:23:53,331 INFO L87 Difference]: Start difference. First operand 144 states and 159 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:23:55,373 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:23:56,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:23:56,863 INFO L93 Difference]: Finished difference Result 144 states and 159 transitions. [2021-11-02 13:23:56,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 13:23:56,864 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-02 13:23:56,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:23:56,864 INFO L225 Difference]: With dead ends: 144 [2021-11-02 13:23:56,865 INFO L226 Difference]: Without dead ends: 142 [2021-11-02 13:23:56,865 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 75.20ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 13:23:56,865 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 49 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3183.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.29ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3472.07ms IncrementalHoareTripleChecker+Time [2021-11-02 13:23:56,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 0 Invalid, 405 Unknown, 0 Unchecked, 3.29ms Time], IncrementalHoareTripleChecker [1 Valid, 403 Invalid, 1 Unknown, 0 Unchecked, 3472.07ms Time] [2021-11-02 13:23:56,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-11-02 13:23:56,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2021-11-02 13:23:56,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 139 states have (on average 1.129496402877698) internal successors, (157), 141 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:23:56,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 157 transitions. [2021-11-02 13:23:56,871 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 157 transitions. Word has length 82 [2021-11-02 13:23:56,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:23:56,872 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 157 transitions. [2021-11-02 13:23:56,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:23:56,872 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 157 transitions. [2021-11-02 13:23:56,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-02 13:23:56,873 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:23:56,873 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:23:56,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-02 13:23:56,873 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 13:23:56,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:23:56,873 INFO L85 PathProgramCache]: Analyzing trace with hash 464392901, now seen corresponding path program 1 times [2021-11-02 13:23:56,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:23:56,874 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211955375] [2021-11-02 13:23:56,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:23:56,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:23:57,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:23:58,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:23:58,121 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:23:58,121 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211955375] [2021-11-02 13:23:58,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211955375] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:23:58,121 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:23:58,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 13:23:58,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191017134] [2021-11-02 13:23:58,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 13:23:58,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:23:58,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 13:23:58,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 13:23:58,122 INFO L87 Difference]: Start difference. First operand 142 states and 157 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:24:00,550 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.43s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:24:02,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:24:02,340 INFO L93 Difference]: Finished difference Result 259 states and 285 transitions. [2021-11-02 13:24:02,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 13:24:02,340 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2021-11-02 13:24:02,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:24:02,341 INFO L225 Difference]: With dead ends: 259 [2021-11-02 13:24:02,341 INFO L226 Difference]: Without dead ends: 142 [2021-11-02 13:24:02,341 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 72.58ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 13:24:02,342 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3733.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.84ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4157.52ms IncrementalHoareTripleChecker+Time [2021-11-02 13:24:02,342 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 456 Unknown, 0 Unchecked, 2.84ms Time], IncrementalHoareTripleChecker [1 Valid, 454 Invalid, 1 Unknown, 0 Unchecked, 4157.52ms Time] [2021-11-02 13:24:02,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-11-02 13:24:02,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 139. [2021-11-02 13:24:02,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 136 states have (on average 1.1176470588235294) internal successors, (152), 138 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:24:02,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 152 transitions. [2021-11-02 13:24:02,347 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 152 transitions. Word has length 84 [2021-11-02 13:24:02,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:24:02,348 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 152 transitions. [2021-11-02 13:24:02,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:24:02,348 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 152 transitions. [2021-11-02 13:24:02,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-02 13:24:02,348 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:24:02,349 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:24:02,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-02 13:24:02,349 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 13:24:02,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:24:02,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1560379032, now seen corresponding path program 1 times [2021-11-02 13:24:02,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:24:02,350 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202616396] [2021-11-02 13:24:02,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:24:02,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:24:02,394 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 13:24:02,394 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [20213665] [2021-11-02 13:24:02,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:24:02,394 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:24:02,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 13:24:02,396 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) [2021-11-02 13:24:02,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-02 13:24:04,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:24:04,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 2794 conjuncts, 153 conjunts are in the unsatisfiable core [2021-11-02 13:24:04,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 13:24:04,437 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-02 13:24:04,956 INFO L354 Elim1Store]: treesize reduction 133, result has 15.3 percent of original size [2021-11-02 13:24:04,957 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 11 case distinctions, treesize of input 45 treesize of output 53 [2021-11-02 13:24:05,806 INFO L354 Elim1Store]: treesize reduction 112, result has 15.8 percent of original size [2021-11-02 13:24:05,806 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 32 treesize of output 41 [2021-11-02 13:24:06,594 INFO L354 Elim1Store]: treesize reduction 78, result has 20.4 percent of original size [2021-11-02 13:24:06,595 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 35 treesize of output 45 [2021-11-02 13:24:07,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 13:24:07,519 INFO L354 Elim1Store]: treesize reduction 66, result has 32.7 percent of original size [2021-11-02 13:24:07,520 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 31 treesize of output 58 [2021-11-02 13:24:08,318 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 66 [2021-11-02 13:24:08,479 INFO L354 Elim1Store]: treesize reduction 156, result has 17.5 percent of original size [2021-11-02 13:24:08,479 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 75 treesize of output 92 [2021-11-02 13:24:09,497 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-02 13:24:26,119 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-02 13:24:26,120 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 117 treesize of output 87 [2021-11-02 13:24:26,176 INFO L354 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2021-11-02 13:24:26,177 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 96 treesize of output 91 [2021-11-02 13:24:30,720 INFO L354 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2021-11-02 13:24:30,721 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 125 treesize of output 95 [2021-11-02 13:24:30,783 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-11-02 13:24:30,783 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 100 treesize of output 94 [2021-11-02 13:24:34,016 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-02 13:24:34,016 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 156 treesize of output 118 [2021-11-02 13:24:34,099 INFO L354 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2021-11-02 13:24:34,099 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 135 treesize of output 129 [2021-11-02 13:24:34,353 INFO L354 Elim1Store]: treesize reduction 88, result has 37.6 percent of original size [2021-11-02 13:24:34,353 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 107 treesize of output 143 [2021-11-02 13:24:35,420 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-02 13:24:35,420 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 51 [2021-11-02 13:24:35,496 INFO L354 Elim1Store]: treesize reduction 68, result has 21.8 percent of original size [2021-11-02 13:24:35,497 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 56 treesize of output 47 [2021-11-02 13:24:37,234 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 30 [2021-11-02 13:24:37,509 INFO L354 Elim1Store]: treesize reduction 18, result has 14.3 percent of original size [2021-11-02 13:24:37,510 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 41 [2021-11-02 13:24:37,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:24:37,716 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 13:24:37,716 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:24:37,716 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202616396] [2021-11-02 13:24:37,716 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 13:24:37,716 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [20213665] [2021-11-02 13:24:37,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [20213665] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:24:37,716 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:24:37,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-11-02 13:24:37,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160629129] [2021-11-02 13:24:37,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-02 13:24:37,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:24:37,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-02 13:24:37,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2021-11-02 13:24:37,718 INFO L87 Difference]: Start difference. First operand 139 states and 152 transitions. Second operand has 22 states, 22 states have (on average 3.9545454545454546) internal successors, (87), 22 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:24:39,761 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:24:45,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:24:45,299 INFO L93 Difference]: Finished difference Result 254 states and 275 transitions. [2021-11-02 13:24:45,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-02 13:24:45,300 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.9545454545454546) internal successors, (87), 22 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-11-02 13:24:45,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:24:45,302 INFO L225 Difference]: With dead ends: 254 [2021-11-02 13:24:45,302 INFO L226 Difference]: Without dead ends: 209 [2021-11-02 13:24:45,303 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 3682.01ms TimeCoverageRelationStatistics Valid=104, Invalid=598, Unknown=0, NotChecked=0, Total=702 [2021-11-02 13:24:45,303 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 84 mSDsluCounter, 1583 mSDsCounter, 0 mSdLazyCounter, 983 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5464.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.76ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 983 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 1259 IncrementalHoareTripleChecker+Unchecked, 6611.11ms IncrementalHoareTripleChecker+Time [2021-11-02 13:24:45,303 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 0 Invalid, 2249 Unknown, 0 Unchecked, 14.76ms Time], IncrementalHoareTripleChecker [6 Valid, 983 Invalid, 1 Unknown, 1259 Unchecked, 6611.11ms Time] [2021-11-02 13:24:45,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2021-11-02 13:24:45,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 208. [2021-11-02 13:24:45,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 205 states have (on average 1.0975609756097562) internal successors, (225), 207 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:24:45,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 225 transitions. [2021-11-02 13:24:45,317 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 225 transitions. Word has length 87 [2021-11-02 13:24:45,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:24:45,317 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 225 transitions. [2021-11-02 13:24:45,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.9545454545454546) internal successors, (87), 22 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:24:45,317 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 225 transitions. [2021-11-02 13:24:45,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-02 13:24:45,318 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:24:45,318 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:24:45,362 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-02 13:24:45,535 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,SelfDestructingSolverStorable13 [2021-11-02 13:24:45,536 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 13:24:45,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:24:45,536 INFO L85 PathProgramCache]: Analyzing trace with hash -378783014, now seen corresponding path program 1 times [2021-11-02 13:24:45,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:24:45,536 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773758915] [2021-11-02 13:24:45,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:24:45,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:24:45,626 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 13:24:45,627 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1261775335] [2021-11-02 13:24:45,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:24:45,627 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:24:45,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 13:24:45,628 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) [2021-11-02 13:24:45,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-02 13:36:28,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:36:28,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 2793 conjuncts, 330 conjunts are in the unsatisfiable core [2021-11-02 13:36:29,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 13:36:29,047 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-02 13:36:29,914 INFO L354 Elim1Store]: treesize reduction 133, result has 15.3 percent of original size [2021-11-02 13:36:29,915 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 11 case distinctions, treesize of input 45 treesize of output 53 [2021-11-02 13:36:30,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-02 13:36:31,255 INFO L354 Elim1Store]: treesize reduction 112, result has 15.8 percent of original size [2021-11-02 13:36:31,255 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 32 treesize of output 41 [2021-11-02 13:36:31,960 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 22 [2021-11-02 13:36:32,759 INFO L354 Elim1Store]: treesize reduction 78, result has 20.4 percent of original size [2021-11-02 13:36:32,759 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 53 treesize of output 63 [2021-11-02 13:36:34,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 13:36:34,832 INFO L354 Elim1Store]: treesize reduction 70, result has 28.6 percent of original size [2021-11-02 13:36:34,833 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 53 treesize of output 76 [2021-11-02 13:36:35,975 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-02 13:36:36,055 INFO L354 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2021-11-02 13:36:36,055 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 131 treesize of output 105 [2021-11-02 13:36:36,070 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 110 treesize of output 106 [2021-11-02 13:36:36,217 INFO L354 Elim1Store]: treesize reduction 156, result has 17.5 percent of original size [2021-11-02 13:36:36,218 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 123 treesize of output 140 Killed by 15