./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_hash_iter_next_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_iter_next_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 13ab51b5126028da19fd5973a25f590452a4763e1cc4e396aeee438668151298 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-4d01470 [2021-11-02 13:22:00,264 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 13:22:00,265 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 13:22:00,285 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 13:22:00,285 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 13:22:00,286 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 13:22:00,287 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 13:22:00,288 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 13:22:00,289 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 13:22:00,290 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 13:22:00,291 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 13:22:00,291 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 13:22:00,292 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 13:22:00,292 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 13:22:00,293 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 13:22:00,294 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 13:22:00,295 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 13:22:00,295 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 13:22:00,297 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 13:22:00,298 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 13:22:00,299 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 13:22:00,300 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 13:22:00,301 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 13:22:00,302 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 13:22:00,304 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 13:22:00,304 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 13:22:00,305 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 13:22:00,305 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 13:22:00,306 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 13:22:00,306 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 13:22:00,307 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 13:22:00,307 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 13:22:00,308 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 13:22:00,309 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 13:22:00,309 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 13:22:00,309 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 13:22:00,310 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 13:22:00,310 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 13:22:00,310 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 13:22:00,311 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 13:22:00,312 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 13:22:00,312 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-02 13:22:00,327 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 13:22:00,328 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 13:22:00,328 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 13:22:00,328 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 13:22:00,329 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 13:22:00,329 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 13:22:00,329 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 13:22:00,330 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 13:22:00,330 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 13:22:00,330 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 13:22:00,330 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 13:22:00,330 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 13:22:00,330 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 13:22:00,330 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 13:22:00,331 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 13:22:00,331 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 13:22:00,331 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 13:22:00,331 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 13:22:00,331 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 13:22:00,331 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 13:22:00,331 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 13:22:00,332 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 13:22:00,332 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 13:22:00,332 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 13:22:00,332 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 13:22:00,332 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 13:22:00,332 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 13:22:00,332 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 13:22:00,333 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 13:22:00,333 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 13ab51b5126028da19fd5973a25f590452a4763e1cc4e396aeee438668151298 [2021-11-02 13:22:00,523 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 13:22:00,543 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 13:22:00,545 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 13:22:00,546 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 13:22:00,548 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 13:22:00,549 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_hash_iter_next_harness.i [2021-11-02 13:22:00,597 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2501f206/06f943b07d7a4330baad60da1d23a7bd/FLAGe21214b4d [2021-11-02 13:22:01,224 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 13:22:01,225 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_iter_next_harness.i [2021-11-02 13:22:01,258 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2501f206/06f943b07d7a4330baad60da1d23a7bd/FLAGe21214b4d [2021-11-02 13:22:01,405 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2501f206/06f943b07d7a4330baad60da1d23a7bd [2021-11-02 13:22:01,407 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 13:22:01,408 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 13:22:01,413 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 13:22:01,413 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 13:22:01,416 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 13:22:01,417 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 01:22:01" (1/1) ... [2021-11-02 13:22:01,421 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fd29bcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:22:01, skipping insertion in model container [2021-11-02 13:22:01,422 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 01:22:01" (1/1) ... [2021-11-02 13:22:01,428 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 13:22:01,534 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 13:22:01,846 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_iter_next_harness.i[4492,4505] [2021-11-02 13:22:01,856 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_iter_next_harness.i[4552,4565] [2021-11-02 13:22:01,885 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-02 13:22:01,892 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-02 13:22:02,577 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:02,578 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:02,578 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:02,579 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:02,579 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:02,589 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:02,590 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:02,592 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:02,592 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:02,593 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:02,594 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:02,594 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:02,595 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:02,864 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-02 13:22:02,865 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-02 13:22:02,870 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-02 13:22:02,872 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-02 13:22:02,872 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-02 13:22:02,873 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-02 13:22:02,873 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-02 13:22:02,874 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-02 13:22:02,874 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-02 13:22:02,874 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-02 13:22:02,972 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-02 13:22:03,168 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:03,169 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:03,186 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:03,187 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:03,194 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:03,194 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:03,213 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:03,215 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:03,217 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:03,217 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:03,217 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:03,218 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:03,218 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:03,266 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 13:22:03,304 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 13:22:03,331 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_iter_next_harness.i[4492,4505] [2021-11-02 13:22:03,332 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_iter_next_harness.i[4552,4565] [2021-11-02 13:22:03,333 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-02 13:22:03,334 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-02 13:22:03,371 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:03,372 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:03,372 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:03,373 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:03,373 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:03,379 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:03,380 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:03,381 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:03,381 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:03,383 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:03,383 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:03,383 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:03,384 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:03,406 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-02 13:22:03,407 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-02 13:22:03,407 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-02 13:22:03,408 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-02 13:22:03,409 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-02 13:22:03,409 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-02 13:22:03,409 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-02 13:22:03,409 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-02 13:22:03,410 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-02 13:22:03,410 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-02 13:22:03,435 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-02 13:22:03,508 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:03,509 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:03,513 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:03,514 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:03,516 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:03,516 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:03,521 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:03,522 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:03,522 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:03,522 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:03,522 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:03,523 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:03,523 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:22:03,534 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 13:22:03,743 INFO L208 MainTranslator]: Completed translation [2021-11-02 13:22:03,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:22:03 WrapperNode [2021-11-02 13:22:03,744 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 13:22:03,745 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 13:22:03,745 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 13:22:03,745 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 13:22:03,750 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:22:03" (1/1) ... [2021-11-02 13:22:03,846 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:22:03" (1/1) ... [2021-11-02 13:22:03,933 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 13:22:03,935 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 13:22:03,935 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 13:22:03,935 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 13:22:03,942 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:22:03" (1/1) ... [2021-11-02 13:22:03,943 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:22:03" (1/1) ... [2021-11-02 13:22:03,958 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:22:03" (1/1) ... [2021-11-02 13:22:03,959 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:22:03" (1/1) ... [2021-11-02 13:22:04,018 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:22:03" (1/1) ... [2021-11-02 13:22:04,031 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:22:03" (1/1) ... [2021-11-02 13:22:04,043 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:22:03" (1/1) ... [2021-11-02 13:22:04,060 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 13:22:04,061 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 13:22:04,061 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 13:22:04,061 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 13:22:04,062 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:22:03" (1/1) ... [2021-11-02 13:22:04,067 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 13:22:04,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 13:22:04,087 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 13:22:04,131 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 13:22:04,142 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-11-02 13:22:04,142 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 13:22:04,142 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 13:22:04,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 13:22:04,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 13:22:04,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 13:22:04,144 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_uaddl_overflow [2021-11-02 13:22:04,144 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 13:22:04,144 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-02 13:22:04,144 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 13:22:04,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 13:22:04,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 13:22:04,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-02 13:22:04,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 13:22:08,354 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 13:22:08,354 INFO L299 CfgBuilder]: Removed 167 assume(true) statements. [2021-11-02 13:22:08,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 01:22:08 BoogieIcfgContainer [2021-11-02 13:22:08,356 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 13:22:08,357 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 13:22:08,357 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 13:22:08,359 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 13:22:08,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 01:22:01" (1/3) ... [2021-11-02 13:22:08,360 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@281c389a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 01:22:08, skipping insertion in model container [2021-11-02 13:22:08,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:22:03" (2/3) ... [2021-11-02 13:22:08,360 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@281c389a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 01:22:08, skipping insertion in model container [2021-11-02 13:22:08,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 01:22:08" (3/3) ... [2021-11-02 13:22:08,361 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_iter_next_harness.i [2021-11-02 13:22:08,364 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 13:22:08,364 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2021-11-02 13:22:08,391 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 13:22:08,396 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 13:22:08,396 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-11-02 13:22:08,407 INFO L276 IsEmpty]: Start isEmpty. Operand has 240 states, 231 states have (on average 1.4805194805194806) internal successors, (342), 239 states have internal predecessors, (342), 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 13:22:08,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-02 13:22:08,414 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:22:08,415 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] [2021-11-02 13:22:08,416 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-02 13:22:08,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:22:08,422 INFO L85 PathProgramCache]: Analyzing trace with hash -731406764, now seen corresponding path program 1 times [2021-11-02 13:22:08,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:22:08,428 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070241115] [2021-11-02 13:22:08,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:22:08,430 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:22:08,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:22:08,876 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 13:22:08,876 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:22:08,877 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070241115] [2021-11-02 13:22:08,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070241115] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:22:08,878 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:22:08,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 13:22:08,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024653780] [2021-11-02 13:22:08,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-02 13:22:08,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:22:08,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-02 13:22:08,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 13:22:08,915 INFO L87 Difference]: Start difference. First operand has 240 states, 231 states have (on average 1.4805194805194806) internal successors, (342), 239 states have internal predecessors, (342), 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 30.5) internal successors, (61), 2 states have internal predecessors, (61), 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 13:22:10,980 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:22:12,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:22:12,598 INFO L93 Difference]: Finished difference Result 476 states and 679 transitions. [2021-11-02 13:22:12,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-02 13:22:12,600 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 30.5) internal successors, (61), 2 states have internal predecessors, (61), 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 61 [2021-11-02 13:22:12,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:22:12,619 INFO L225 Difference]: With dead ends: 476 [2021-11-02 13:22:12,620 INFO L226 Difference]: Without dead ends: 234 [2021-11-02 13:22:12,622 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.02ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 13:22:12,624 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3231.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.31ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3601.77ms IncrementalHoareTripleChecker+Time [2021-11-02 13:22:12,625 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 322 Unknown, 0 Unchecked, 5.31ms Time], IncrementalHoareTripleChecker [0 Valid, 321 Invalid, 1 Unknown, 0 Unchecked, 3601.77ms Time] [2021-11-02 13:22:12,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2021-11-02 13:22:12,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2021-11-02 13:22:12,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 226 states have (on average 1.3982300884955752) internal successors, (316), 233 states have internal predecessors, (316), 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 13:22:12,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 316 transitions. [2021-11-02 13:22:12,705 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 316 transitions. Word has length 61 [2021-11-02 13:22:12,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:22:12,706 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 316 transitions. [2021-11-02 13:22:12,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 30.5) internal successors, (61), 2 states have internal predecessors, (61), 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 13:22:12,706 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 316 transitions. [2021-11-02 13:22:12,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-02 13:22:12,714 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:22:12,714 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] [2021-11-02 13:22:12,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 13:22:12,714 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-02 13:22:12,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:22:12,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1678373439, now seen corresponding path program 1 times [2021-11-02 13:22:12,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:22:12,718 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269265911] [2021-11-02 13:22:12,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:22:12,718 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:22:12,818 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 13:22:12,819 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [509209401] [2021-11-02 13:22:12,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:22:12,819 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:22:12,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 13:22:12,828 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 13:22:12,859 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 13:22:13,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:22:13,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 2630 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-02 13:22:13,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 13:22:14,119 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 13:22:14,120 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 13:22:14,120 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:22:14,120 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269265911] [2021-11-02 13:22:14,120 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 13:22:14,121 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509209401] [2021-11-02 13:22:14,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [509209401] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:22:14,121 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:22:14,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 13:22:14,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262666239] [2021-11-02 13:22:14,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 13:22:14,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:22:14,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 13:22:14,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 13:22:14,135 INFO L87 Difference]: Start difference. First operand 234 states and 316 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 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 13:22:16,184 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 13:22:18,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:22:18,234 INFO L93 Difference]: Finished difference Result 409 states and 554 transitions. [2021-11-02 13:22:18,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 13:22:18,235 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 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 61 [2021-11-02 13:22:18,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:22:18,236 INFO L225 Difference]: With dead ends: 409 [2021-11-02 13:22:18,236 INFO L226 Difference]: Without dead ends: 234 [2021-11-02 13:22:18,237 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 55.79ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 13:22:18,238 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 350 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3576.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.34ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3999.42ms IncrementalHoareTripleChecker+Time [2021-11-02 13:22:18,238 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [350 Valid, 0 Invalid, 567 Unknown, 0 Unchecked, 15.34ms Time], IncrementalHoareTripleChecker [0 Valid, 566 Invalid, 1 Unknown, 0 Unchecked, 3999.42ms Time] [2021-11-02 13:22:18,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2021-11-02 13:22:18,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2021-11-02 13:22:18,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 226 states have (on average 1.3938053097345133) internal successors, (315), 233 states have internal predecessors, (315), 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 13:22:18,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 315 transitions. [2021-11-02 13:22:18,247 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 315 transitions. Word has length 61 [2021-11-02 13:22:18,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:22:18,247 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 315 transitions. [2021-11-02 13:22:18,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 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 13:22:18,248 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 315 transitions. [2021-11-02 13:22:18,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-02 13:22:18,248 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:22:18,248 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] [2021-11-02 13:22:18,274 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-02 13:22:18,467 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 13:22:18,468 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-02 13:22:18,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:22:18,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1040099631, now seen corresponding path program 1 times [2021-11-02 13:22:18,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:22:18,468 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635132407] [2021-11-02 13:22:18,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:22:18,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:22:18,564 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 13:22:18,564 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [984897676] [2021-11-02 13:22:18,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:22:18,565 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:22:18,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 13:22:18,584 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 13:22:18,586 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 13:22:19,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:22:19,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 2635 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-02 13:22:19,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 13:22:19,752 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 13:22:19,753 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 13:22:19,753 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:22:19,753 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635132407] [2021-11-02 13:22:19,753 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 13:22:19,753 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [984897676] [2021-11-02 13:22:19,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [984897676] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:22:19,753 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:22:19,753 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 13:22:19,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959805964] [2021-11-02 13:22:19,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 13:22:19,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:22:19,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 13:22:19,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 13:22:19,754 INFO L87 Difference]: Start difference. First operand 234 states and 315 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 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 13:22:21,795 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 13:22:23,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:22:23,507 INFO L93 Difference]: Finished difference Result 370 states and 498 transitions. [2021-11-02 13:22:23,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 13:22:23,507 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 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 62 [2021-11-02 13:22:23,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:22:23,509 INFO L225 Difference]: With dead ends: 370 [2021-11-02 13:22:23,510 INFO L226 Difference]: Without dead ends: 241 [2021-11-02 13:22:23,510 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 90.70ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-02 13:22:23,511 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 742 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3357.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 742 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.79ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 483 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3655.94ms IncrementalHoareTripleChecker+Time [2021-11-02 13:22:23,511 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [742 Valid, 0 Invalid, 489 Unknown, 0 Unchecked, 8.79ms Time], IncrementalHoareTripleChecker [5 Valid, 483 Invalid, 1 Unknown, 0 Unchecked, 3655.94ms Time] [2021-11-02 13:22:23,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2021-11-02 13:22:23,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 234. [2021-11-02 13:22:23,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 226 states have (on average 1.3849557522123894) internal successors, (313), 233 states have internal predecessors, (313), 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 13:22:23,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 313 transitions. [2021-11-02 13:22:23,522 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 313 transitions. Word has length 62 [2021-11-02 13:22:23,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:22:23,522 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 313 transitions. [2021-11-02 13:22:23,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 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 13:22:23,522 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 313 transitions. [2021-11-02 13:22:23,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-02 13:22:23,523 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:22:23,523 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] [2021-11-02 13:22:23,561 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-02 13:22:23,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-11-02 13:22:23,743 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-02 13:22:23,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:22:23,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1709964241, now seen corresponding path program 1 times [2021-11-02 13:22:23,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:22:23,744 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923227328] [2021-11-02 13:22:23,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:22:23,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:22:23,815 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 13:22:23,816 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1380296250] [2021-11-02 13:22:23,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:22:23,817 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:22:23,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 13:22:23,840 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 13:22:23,841 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 13:22:24,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:22:24,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 2640 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-02 13:22:24,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 13:22:25,093 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 13:22:25,094 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 13:22:25,094 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:22:25,094 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923227328] [2021-11-02 13:22:25,094 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 13:22:25,094 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1380296250] [2021-11-02 13:22:25,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1380296250] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:22:25,094 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:22:25,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 13:22:25,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304722658] [2021-11-02 13:22:25,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 13:22:25,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:22:25,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 13:22:25,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-02 13:22:25,096 INFO L87 Difference]: Start difference. First operand 234 states and 313 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 6 states have internal predecessors, (63), 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 13:22:27,136 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 13:22:29,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:22:29,638 INFO L93 Difference]: Finished difference Result 324 states and 431 transitions. [2021-11-02 13:22:29,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 13:22:29,639 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 6 states have internal predecessors, (63), 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 63 [2021-11-02 13:22:29,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:22:29,640 INFO L225 Difference]: With dead ends: 324 [2021-11-02 13:22:29,640 INFO L226 Difference]: Without dead ends: 234 [2021-11-02 13:22:29,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 231.28ms TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-11-02 13:22:29,641 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1140 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 644 mSolverCounterSat, 19 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3946.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1140 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.35ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 644 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4351.13ms IncrementalHoareTripleChecker+Time [2021-11-02 13:22:29,641 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1140 Valid, 0 Invalid, 664 Unknown, 0 Unchecked, 16.35ms Time], IncrementalHoareTripleChecker [19 Valid, 644 Invalid, 1 Unknown, 0 Unchecked, 4351.13ms Time] [2021-11-02 13:22:29,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2021-11-02 13:22:29,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2021-11-02 13:22:29,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 226 states have (on average 1.3761061946902655) internal successors, (311), 233 states have internal predecessors, (311), 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 13:22:29,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 311 transitions. [2021-11-02 13:22:29,648 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 311 transitions. Word has length 63 [2021-11-02 13:22:29,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:22:29,651 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 311 transitions. [2021-11-02 13:22:29,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 6 states have internal predecessors, (63), 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 13:22:29,651 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 311 transitions. [2021-11-02 13:22:29,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-02 13:22:29,652 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:22:29,652 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] [2021-11-02 13:22:29,674 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-02 13:22:29,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:22:29,868 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-02 13:22:29,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:22:29,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1469524672, now seen corresponding path program 1 times [2021-11-02 13:22:29,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:22:29,868 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196372418] [2021-11-02 13:22:29,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:22:29,868 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:22:29,922 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 13:22:29,923 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [905707075] [2021-11-02 13:22:29,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:22:29,923 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:22:29,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 13:22:29,924 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 13:22:29,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-02 13:22:30,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:22:30,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 2645 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-02 13:22:30,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 13:22:30,944 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 13:22:30,944 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 13:22:30,945 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:22:30,945 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196372418] [2021-11-02 13:22:30,945 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 13:22:30,945 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905707075] [2021-11-02 13:22:30,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905707075] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:22:30,945 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:22:30,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 13:22:30,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713686181] [2021-11-02 13:22:30,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 13:22:30,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:22:30,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 13:22:30,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 13:22:30,946 INFO L87 Difference]: Start difference. First operand 234 states and 311 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 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 13:22:32,987 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 13:22:38,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:22:38,219 INFO L93 Difference]: Finished difference Result 664 states and 889 transitions. [2021-11-02 13:22:38,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 13:22:38,222 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 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 64 [2021-11-02 13:22:38,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:22:38,223 INFO L225 Difference]: With dead ends: 664 [2021-11-02 13:22:38,223 INFO L226 Difference]: Without dead ends: 452 [2021-11-02 13:22:38,223 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 106.69ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-02 13:22:38,224 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 574 mSDsluCounter, 1172 mSDsCounter, 0 mSdLazyCounter, 1774 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6629.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 574 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.93ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1774 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7109.50ms IncrementalHoareTripleChecker+Time [2021-11-02 13:22:38,224 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [574 Valid, 0 Invalid, 1783 Unknown, 0 Unchecked, 19.93ms Time], IncrementalHoareTripleChecker [8 Valid, 1774 Invalid, 1 Unknown, 0 Unchecked, 7109.50ms Time] [2021-11-02 13:22:38,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2021-11-02 13:22:38,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 240. [2021-11-02 13:22:38,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 232 states have (on average 1.3663793103448276) internal successors, (317), 239 states have internal predecessors, (317), 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 13:22:38,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 317 transitions. [2021-11-02 13:22:38,231 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 317 transitions. Word has length 64 [2021-11-02 13:22:38,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:22:38,231 INFO L470 AbstractCegarLoop]: Abstraction has 240 states and 317 transitions. [2021-11-02 13:22:38,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 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 13:22:38,234 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 317 transitions. [2021-11-02 13:22:38,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-02 13:22:38,235 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:22:38,235 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] [2021-11-02 13:22:38,259 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-02 13:22:38,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:22:38,458 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-02 13:22:38,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:22:38,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1562966360, now seen corresponding path program 1 times [2021-11-02 13:22:38,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:22:38,459 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426527378] [2021-11-02 13:22:38,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:22:38,459 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:22:38,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:22:38,974 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 13:22:38,975 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:22:38,975 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426527378] [2021-11-02 13:22:38,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426527378] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:22:38,975 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:22:38,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-02 13:22:38,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449640566] [2021-11-02 13:22:38,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 13:22:38,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:22:38,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 13:22:38,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-02 13:22:38,976 INFO L87 Difference]: Start difference. First operand 240 states and 317 transitions. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 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 13:22:41,016 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 13:22:46,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:22:46,481 INFO L93 Difference]: Finished difference Result 532 states and 706 transitions. [2021-11-02 13:22:46,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-02 13:22:46,481 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 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 68 [2021-11-02 13:22:46,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:22:46,482 INFO L225 Difference]: With dead ends: 532 [2021-11-02 13:22:46,482 INFO L226 Difference]: Without dead ends: 330 [2021-11-02 13:22:46,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 547.03ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-11-02 13:22:46,483 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 613 mSDsluCounter, 987 mSDsCounter, 0 mSdLazyCounter, 1541 mSolverCounterSat, 24 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6397.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 613 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.38ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1541 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7019.56ms IncrementalHoareTripleChecker+Time [2021-11-02 13:22:46,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [613 Valid, 0 Invalid, 1566 Unknown, 0 Unchecked, 19.38ms Time], IncrementalHoareTripleChecker [24 Valid, 1541 Invalid, 1 Unknown, 0 Unchecked, 7019.56ms Time] [2021-11-02 13:22:46,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2021-11-02 13:22:46,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 242. [2021-11-02 13:22:46,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 234 states have (on average 1.3632478632478633) internal successors, (319), 241 states have internal predecessors, (319), 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 13:22:46,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 319 transitions. [2021-11-02 13:22:46,494 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 319 transitions. Word has length 68 [2021-11-02 13:22:46,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:22:46,495 INFO L470 AbstractCegarLoop]: Abstraction has 242 states and 319 transitions. [2021-11-02 13:22:46,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 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 13:22:46,495 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 319 transitions. [2021-11-02 13:22:46,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-02 13:22:46,496 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:22:46,496 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] [2021-11-02 13:22:46,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-02 13:22:46,496 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-02 13:22:46,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:22:46,496 INFO L85 PathProgramCache]: Analyzing trace with hash -803728234, now seen corresponding path program 1 times [2021-11-02 13:22:46,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:22:46,497 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195740658] [2021-11-02 13:22:46,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:22:46,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:22:46,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:22:46,730 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 13:22:46,730 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:22:46,730 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195740658] [2021-11-02 13:22:46,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195740658] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:22:46,730 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:22:46,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 13:22:46,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299661250] [2021-11-02 13:22:46,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 13:22:46,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:22:46,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 13:22:46,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 13:22:46,731 INFO L87 Difference]: Start difference. First operand 242 states and 319 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 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 13:22:48,774 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 13:22:51,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:22:51,181 INFO L93 Difference]: Finished difference Result 447 states and 595 transitions. [2021-11-02 13:22:51,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 13:22:51,182 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 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 68 [2021-11-02 13:22:51,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:22:51,183 INFO L225 Difference]: With dead ends: 447 [2021-11-02 13:22:51,183 INFO L226 Difference]: Without dead ends: 240 [2021-11-02 13:22:51,183 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 55.01ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 13:22:51,184 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 285 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 612 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3929.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.07ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 612 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4372.78ms IncrementalHoareTripleChecker+Time [2021-11-02 13:22:51,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [285 Valid, 0 Invalid, 617 Unknown, 0 Unchecked, 5.07ms Time], IncrementalHoareTripleChecker [4 Valid, 612 Invalid, 1 Unknown, 0 Unchecked, 4372.78ms Time] [2021-11-02 13:22:51,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2021-11-02 13:22:51,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2021-11-02 13:22:51,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 232 states have (on average 1.353448275862069) internal successors, (314), 239 states have internal predecessors, (314), 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 13:22:51,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 314 transitions. [2021-11-02 13:22:51,195 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 314 transitions. Word has length 68 [2021-11-02 13:22:51,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:22:51,195 INFO L470 AbstractCegarLoop]: Abstraction has 240 states and 314 transitions. [2021-11-02 13:22:51,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 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 13:22:51,196 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 314 transitions. [2021-11-02 13:22:51,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-02 13:22:51,196 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:22:51,197 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] [2021-11-02 13:22:51,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-02 13:22:51,197 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-02 13:22:51,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:22:51,197 INFO L85 PathProgramCache]: Analyzing trace with hash -59877347, now seen corresponding path program 1 times [2021-11-02 13:22:51,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:22:51,198 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275255011] [2021-11-02 13:22:51,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:22:51,198 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:22:51,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:22:51,619 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 13:22:51,619 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:22:51,619 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275255011] [2021-11-02 13:22:51,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275255011] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:22:51,619 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:22:51,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 13:22:51,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102477675] [2021-11-02 13:22:51,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 13:22:51,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:22:51,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 13:22:51,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 13:22:51,621 INFO L87 Difference]: Start difference. First operand 240 states and 314 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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 13:22:53,921 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:22:56,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:22:56,998 INFO L93 Difference]: Finished difference Result 450 states and 593 transitions. [2021-11-02 13:22:56,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 13:22:56,999 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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 70 [2021-11-02 13:22:56,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:22:57,000 INFO L225 Difference]: With dead ends: 450 [2021-11-02 13:22:57,000 INFO L226 Difference]: Without dead ends: 247 [2021-11-02 13:22:57,000 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 302.54ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-02 13:22:57,001 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 321 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 831 mSolverCounterSat, 55 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4676.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.46ms SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 831 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5128.19ms IncrementalHoareTripleChecker+Time [2021-11-02 13:22:57,001 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [321 Valid, 0 Invalid, 887 Unknown, 0 Unchecked, 6.46ms Time], IncrementalHoareTripleChecker [55 Valid, 831 Invalid, 1 Unknown, 0 Unchecked, 5128.19ms Time] [2021-11-02 13:22:57,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2021-11-02 13:22:57,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 240. [2021-11-02 13:22:57,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 232 states have (on average 1.3189655172413792) internal successors, (306), 239 states have internal predecessors, (306), 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 13:22:57,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 306 transitions. [2021-11-02 13:22:57,009 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 306 transitions. Word has length 70 [2021-11-02 13:22:57,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:22:57,009 INFO L470 AbstractCegarLoop]: Abstraction has 240 states and 306 transitions. [2021-11-02 13:22:57,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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 13:22:57,010 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 306 transitions. [2021-11-02 13:22:57,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-02 13:22:57,010 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:22:57,010 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 13:22:57,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-02 13:22:57,011 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-02 13:22:57,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:22:57,011 INFO L85 PathProgramCache]: Analyzing trace with hash -168398452, now seen corresponding path program 1 times [2021-11-02 13:22:57,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:22:57,011 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970827911] [2021-11-02 13:22:57,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:22:57,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:22:57,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:22:57,338 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 13:22:57,338 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:22:57,338 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970827911] [2021-11-02 13:22:57,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970827911] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:22:57,338 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:22:57,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 13:22:57,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579216726] [2021-11-02 13:22:57,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 13:22:57,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:22:57,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 13:22:57,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 13:22:57,339 INFO L87 Difference]: Start difference. First operand 240 states and 306 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 13:22:59,628 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:23:03,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:23:03,034 INFO L93 Difference]: Finished difference Result 471 states and 606 transitions. [2021-11-02 13:23:03,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 13:23:03,034 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 13:23:03,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:23:03,035 INFO L225 Difference]: With dead ends: 471 [2021-11-02 13:23:03,035 INFO L226 Difference]: Without dead ends: 293 [2021-11-02 13:23:03,036 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 158.30ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-02 13:23:03,036 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 402 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 928 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5021.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.38ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 928 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5541.07ms IncrementalHoareTripleChecker+Time [2021-11-02 13:23:03,036 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [402 Valid, 0 Invalid, 939 Unknown, 0 Unchecked, 8.38ms Time], IncrementalHoareTripleChecker [10 Valid, 928 Invalid, 1 Unknown, 0 Unchecked, 5541.07ms Time] [2021-11-02 13:23:03,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2021-11-02 13:23:03,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 255. [2021-11-02 13:23:03,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 247 states have (on average 1.3076923076923077) internal successors, (323), 254 states have internal predecessors, (323), 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 13:23:03,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 323 transitions. [2021-11-02 13:23:03,046 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 323 transitions. Word has length 71 [2021-11-02 13:23:03,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:23:03,047 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 323 transitions. [2021-11-02 13:23:03,047 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 13:23:03,048 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 323 transitions. [2021-11-02 13:23:03,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-02 13:23:03,048 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:23:03,048 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] [2021-11-02 13:23:03,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-02 13:23:03,049 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-02 13:23:03,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:23:03,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1844150629, now seen corresponding path program 1 times [2021-11-02 13:23:03,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:23:03,049 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956627954] [2021-11-02 13:23:03,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:23:03,050 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:23:03,132 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 13:23:03,133 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [444288509] [2021-11-02 13:23:03,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:23:03,133 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:23:03,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 13:23:03,134 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 13:23:03,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-02 13:23:03,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:23:03,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 2796 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-02 13:23:03,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 13:23:04,079 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 13:23:04,079 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 13:23:04,079 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:23:04,079 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956627954] [2021-11-02 13:23:04,079 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 13:23:04,079 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444288509] [2021-11-02 13:23:04,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [444288509] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:23:04,079 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:23:04,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 13:23:04,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228814479] [2021-11-02 13:23:04,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 13:23:04,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:23:04,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 13:23:04,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 13:23:04,080 INFO L87 Difference]: Start difference. First operand 255 states and 323 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 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 13:23:06,489 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.41s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:23:11,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:23:11,345 INFO L93 Difference]: Finished difference Result 707 states and 901 transitions. [2021-11-02 13:23:11,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 13:23:11,345 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 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 80 [2021-11-02 13:23:11,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:23:11,347 INFO L225 Difference]: With dead ends: 707 [2021-11-02 13:23:11,347 INFO L226 Difference]: Without dead ends: 477 [2021-11-02 13:23:11,348 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 97.47ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-02 13:23:11,348 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 532 mSDsluCounter, 966 mSDsCounter, 0 mSdLazyCounter, 1386 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6408.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.93ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1386 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7117.02ms IncrementalHoareTripleChecker+Time [2021-11-02 13:23:11,348 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [532 Valid, 0 Invalid, 1395 Unknown, 0 Unchecked, 10.93ms Time], IncrementalHoareTripleChecker [8 Valid, 1386 Invalid, 1 Unknown, 0 Unchecked, 7117.02ms Time] [2021-11-02 13:23:11,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2021-11-02 13:23:11,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 261. [2021-11-02 13:23:11,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 253 states have (on average 1.300395256916996) internal successors, (329), 260 states have internal predecessors, (329), 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 13:23:11,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 329 transitions. [2021-11-02 13:23:11,358 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 329 transitions. Word has length 80 [2021-11-02 13:23:11,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:23:11,359 INFO L470 AbstractCegarLoop]: Abstraction has 261 states and 329 transitions. [2021-11-02 13:23:11,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 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 13:23:11,359 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 329 transitions. [2021-11-02 13:23:11,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-02 13:23:11,359 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:23:11,360 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] [2021-11-02 13:23:11,384 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-11-02 13:23:11,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-02 13:23:11,566 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-02 13:23:11,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:23:11,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1941343577, now seen corresponding path program 1 times [2021-11-02 13:23:11,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:23:11,567 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855757706] [2021-11-02 13:23:11,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:23:11,567 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:23:11,662 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 13:23:11,662 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1808494028] [2021-11-02 13:23:11,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:23:11,662 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:23:11,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 13:23:11,675 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 13:23:11,745 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-02 13:23:12,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:23:12,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 2797 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-02 13:23:12,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 13:23:12,761 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 13:23:12,761 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 13:23:12,761 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:23:12,761 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855757706] [2021-11-02 13:23:12,761 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 13:23:12,761 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1808494028] [2021-11-02 13:23:12,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1808494028] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:23:12,761 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:23:12,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 13:23:12,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805511427] [2021-11-02 13:23:12,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 13:23:12,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:23:12,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 13:23:12,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-02 13:23:12,762 INFO L87 Difference]: Start difference. First operand 261 states and 329 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 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 13:23:15,543 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.78s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:23:22,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:23:22,602 INFO L93 Difference]: Finished difference Result 599 states and 739 transitions. [2021-11-02 13:23:22,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-02 13:23:22,602 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 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 80 [2021-11-02 13:23:22,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:23:22,603 INFO L225 Difference]: With dead ends: 599 [2021-11-02 13:23:22,603 INFO L226 Difference]: Without dead ends: 375 [2021-11-02 13:23:22,604 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 291.69ms TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-11-02 13:23:22,604 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 124 mSDsluCounter, 1415 mSDsCounter, 0 mSdLazyCounter, 1991 mSolverCounterSat, 56 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8691.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 27.81ms SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1991 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9532.94ms IncrementalHoareTripleChecker+Time [2021-11-02 13:23:22,605 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 0 Invalid, 2048 Unknown, 0 Unchecked, 27.81ms Time], IncrementalHoareTripleChecker [56 Valid, 1991 Invalid, 1 Unknown, 0 Unchecked, 9532.94ms Time] [2021-11-02 13:23:22,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2021-11-02 13:23:22,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 253. [2021-11-02 13:23:22,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 245 states have (on average 1.2571428571428571) internal successors, (308), 252 states have internal predecessors, (308), 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 13:23:22,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 308 transitions. [2021-11-02 13:23:22,615 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 308 transitions. Word has length 80 [2021-11-02 13:23:22,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:23:22,616 INFO L470 AbstractCegarLoop]: Abstraction has 253 states and 308 transitions. [2021-11-02 13:23:22,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 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 13:23:22,616 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 308 transitions. [2021-11-02 13:23:22,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-02 13:23:22,616 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:23:22,616 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:23:22,641 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-02 13:23:22,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:23:22,840 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-02 13:23:22,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:23:22,840 INFO L85 PathProgramCache]: Analyzing trace with hash 757959968, now seen corresponding path program 1 times [2021-11-02 13:23:22,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:23:22,840 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539002438] [2021-11-02 13:23:22,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:23:22,841 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:23:23,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:23:23,555 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 13:23:23,555 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:23:23,555 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539002438] [2021-11-02 13:23:23,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539002438] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:23:23,555 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:23:23,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-02 13:23:23,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529307403] [2021-11-02 13:23:23,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 13:23:23,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:23:23,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 13:23:23,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-02 13:23:23,556 INFO L87 Difference]: Start difference. First operand 253 states and 308 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 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 13:23:25,600 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 13:23:31,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:23:31,568 INFO L93 Difference]: Finished difference Result 527 states and 650 transitions. [2021-11-02 13:23:31,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-02 13:23:31,568 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 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 96 [2021-11-02 13:23:31,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:23:31,570 INFO L225 Difference]: With dead ends: 527 [2021-11-02 13:23:31,570 INFO L226 Difference]: Without dead ends: 431 [2021-11-02 13:23:31,570 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 477.32ms TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-11-02 13:23:31,571 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 808 mSDsluCounter, 1075 mSDsCounter, 0 mSdLazyCounter, 1752 mSolverCounterSat, 20 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6991.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 808 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.81ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1752 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7586.17ms IncrementalHoareTripleChecker+Time [2021-11-02 13:23:31,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [808 Valid, 0 Invalid, 1773 Unknown, 0 Unchecked, 22.81ms Time], IncrementalHoareTripleChecker [20 Valid, 1752 Invalid, 1 Unknown, 0 Unchecked, 7586.17ms Time] [2021-11-02 13:23:31,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2021-11-02 13:23:31,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 306. [2021-11-02 13:23:31,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 298 states have (on average 1.2483221476510067) internal successors, (372), 305 states have internal predecessors, (372), 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 13:23:31,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 372 transitions. [2021-11-02 13:23:31,582 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 372 transitions. Word has length 96 [2021-11-02 13:23:31,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:23:31,582 INFO L470 AbstractCegarLoop]: Abstraction has 306 states and 372 transitions. [2021-11-02 13:23:31,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 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 13:23:31,583 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 372 transitions. [2021-11-02 13:23:31,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-02 13:23:31,583 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:23:31,584 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:23:31,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-02 13:23:31,584 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-02 13:23:31,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:23:31,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1910937092, now seen corresponding path program 1 times [2021-11-02 13:23:31,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:23:31,585 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062687300] [2021-11-02 13:23:31,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:23:31,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:23:31,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:23:32,061 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 13:23:32,062 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:23:32,062 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062687300] [2021-11-02 13:23:32,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062687300] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:23:32,062 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:23:32,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 13:23:32,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036494575] [2021-11-02 13:23:32,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 13:23:32,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:23:32,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 13:23:32,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 13:23:32,063 INFO L87 Difference]: Start difference. First operand 306 states and 372 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 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 13:23:34,101 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 13:23:37,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:23:37,378 INFO L93 Difference]: Finished difference Result 335 states and 411 transitions. [2021-11-02 13:23:37,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 13:23:37,379 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 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 96 [2021-11-02 13:23:37,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:23:37,380 INFO L225 Difference]: With dead ends: 335 [2021-11-02 13:23:37,380 INFO L226 Difference]: Without dead ends: 333 [2021-11-02 13:23:37,380 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 78.41ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 13:23:37,381 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 34 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 857 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4732.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.27ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 857 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5226.89ms IncrementalHoareTripleChecker+Time [2021-11-02 13:23:37,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 0 Invalid, 858 Unknown, 0 Unchecked, 8.27ms Time], IncrementalHoareTripleChecker [0 Valid, 857 Invalid, 1 Unknown, 0 Unchecked, 5226.89ms Time] [2021-11-02 13:23:37,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2021-11-02 13:23:37,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 308. [2021-11-02 13:23:37,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 300 states have (on average 1.2466666666666666) internal successors, (374), 307 states have internal predecessors, (374), 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 13:23:37,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 374 transitions. [2021-11-02 13:23:37,396 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 374 transitions. Word has length 96 [2021-11-02 13:23:37,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:23:37,396 INFO L470 AbstractCegarLoop]: Abstraction has 308 states and 374 transitions. [2021-11-02 13:23:37,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 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 13:23:37,396 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 374 transitions. [2021-11-02 13:23:37,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-02 13:23:37,397 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:23:37,397 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:23:37,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-02 13:23:37,398 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-02 13:23:37,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:23:37,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1910877510, now seen corresponding path program 1 times [2021-11-02 13:23:37,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:23:37,398 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68765626] [2021-11-02 13:23:37,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:23:37,399 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:23:38,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:23:39,150 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 13:23:39,150 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:23:39,150 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68765626] [2021-11-02 13:23:39,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68765626] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:23:39,151 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:23:39,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 13:23:39,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838201851] [2021-11-02 13:23:39,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 13:23:39,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:23:39,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 13:23:39,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 13:23:39,152 INFO L87 Difference]: Start difference. First operand 308 states and 374 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 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 13:23:41,195 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 13:23:44,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:23:44,362 INFO L93 Difference]: Finished difference Result 592 states and 720 transitions. [2021-11-02 13:23:44,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 13:23:44,363 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 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 96 [2021-11-02 13:23:44,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:23:44,364 INFO L225 Difference]: With dead ends: 592 [2021-11-02 13:23:44,364 INFO L226 Difference]: Without dead ends: 308 [2021-11-02 13:23:44,364 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 75.83ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 13:23:44,365 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 854 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4670.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.75ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 854 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5124.73ms IncrementalHoareTripleChecker+Time [2021-11-02 13:23:44,365 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 0 Invalid, 860 Unknown, 0 Unchecked, 5.75ms Time], IncrementalHoareTripleChecker [5 Valid, 854 Invalid, 1 Unknown, 0 Unchecked, 5124.73ms Time] [2021-11-02 13:23:44,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2021-11-02 13:23:44,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 299. [2021-11-02 13:23:44,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 291 states have (on average 1.2371134020618557) internal successors, (360), 298 states have internal predecessors, (360), 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 13:23:44,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 360 transitions. [2021-11-02 13:23:44,376 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 360 transitions. Word has length 96 [2021-11-02 13:23:44,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:23:44,376 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 360 transitions. [2021-11-02 13:23:44,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 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 13:23:44,376 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 360 transitions. [2021-11-02 13:23:44,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-02 13:23:44,377 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:23:44,377 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:23:44,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-02 13:23:44,378 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-02 13:23:44,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:23:44,378 INFO L85 PathProgramCache]: Analyzing trace with hash 88711003, now seen corresponding path program 1 times [2021-11-02 13:23:44,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:23:44,378 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62547355] [2021-11-02 13:23:44,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:23:44,379 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:23:44,423 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 13:23:44,423 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [366132466] [2021-11-02 13:23:44,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:23:44,424 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:23:44,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 13:23:44,425 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 13:23:44,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-02 13:23:45,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:23:45,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 3055 conjuncts, 48 conjunts are in the unsatisfiable core [2021-11-02 13:23:45,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 13:23:46,115 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 78 [2021-11-02 13:23:46,131 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 64 [2021-11-02 13:23:46,144 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-02 13:23:46,144 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 55 [2021-11-02 13:23:46,310 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-02 13:23:46,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 44 [2021-11-02 13:23:46,320 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-02 13:23:46,320 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 19 [2021-11-02 13:23:46,398 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 13:23:46,398 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 13:23:46,398 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:23:46,398 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62547355] [2021-11-02 13:23:46,398 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 13:23:46,398 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [366132466] [2021-11-02 13:23:46,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [366132466] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:23:46,399 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:23:46,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-02 13:23:46,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801779383] [2021-11-02 13:23:46,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-02 13:23:46,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:23:46,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-02 13:23:46,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-02 13:23:46,400 INFO L87 Difference]: Start difference. First operand 299 states and 360 transitions. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 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 13:23:48,444 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 13:23:54,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:23:54,403 INFO L93 Difference]: Finished difference Result 575 states and 705 transitions. [2021-11-02 13:23:54,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-02 13:23:54,404 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 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 102 [2021-11-02 13:23:54,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:23:54,405 INFO L225 Difference]: With dead ends: 575 [2021-11-02 13:23:54,405 INFO L226 Difference]: Without dead ends: 457 [2021-11-02 13:23:54,406 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1054.63ms TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2021-11-02 13:23:54,406 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1170 mSDsluCounter, 911 mSDsCounter, 0 mSdLazyCounter, 1478 mSolverCounterSat, 23 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6411.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1170 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.20ms SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1478 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7210.82ms IncrementalHoareTripleChecker+Time [2021-11-02 13:23:54,406 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1170 Valid, 0 Invalid, 1502 Unknown, 0 Unchecked, 13.20ms Time], IncrementalHoareTripleChecker [23 Valid, 1478 Invalid, 1 Unknown, 0 Unchecked, 7210.82ms Time] [2021-11-02 13:23:54,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2021-11-02 13:23:54,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 315. [2021-11-02 13:23:54,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 307 states have (on average 1.231270358306189) internal successors, (378), 314 states have internal predecessors, (378), 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 13:23:54,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 378 transitions. [2021-11-02 13:23:54,436 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 378 transitions. Word has length 102 [2021-11-02 13:23:54,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:23:54,436 INFO L470 AbstractCegarLoop]: Abstraction has 315 states and 378 transitions. [2021-11-02 13:23:54,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 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 13:23:54,437 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 378 transitions. [2021-11-02 13:23:54,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-02 13:23:54,437 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:23:54,437 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:23:54,460 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-02 13:23:54,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:23:54,660 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-02 13:23:54,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:23:54,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1714840821, now seen corresponding path program 1 times [2021-11-02 13:23:54,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:23:54,661 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685575350] [2021-11-02 13:23:54,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:23:54,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:23:54,775 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 13:23:54,800 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1159826616] [2021-11-02 13:23:54,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:23:54,800 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:23:54,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 13:23:54,816 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 13:23:54,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-02 13:23:55,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:23:55,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 3048 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-02 13:23:55,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 13:23:56,014 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-02 13:23:56,015 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 1 case distinctions, treesize of input 18 treesize of output 19 [2021-11-02 13:23:56,074 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-02 13:23:56,204 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 13:23:56,205 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 13:23:56,205 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:23:56,205 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685575350] [2021-11-02 13:23:56,205 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 13:23:56,205 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1159826616] [2021-11-02 13:23:56,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1159826616] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:23:56,205 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:23:56,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-02 13:23:56,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566333948] [2021-11-02 13:23:56,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 13:23:56,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:23:56,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 13:23:56,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-02 13:23:56,207 INFO L87 Difference]: Start difference. First operand 315 states and 378 transitions. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 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 13:23:59,541 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:24:05,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:24:05,230 INFO L93 Difference]: Finished difference Result 455 states and 556 transitions. [2021-11-02 13:24:05,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-02 13:24:05,231 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 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 102 [2021-11-02 13:24:05,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:24:05,233 INFO L225 Difference]: With dead ends: 455 [2021-11-02 13:24:05,233 INFO L226 Difference]: Without dead ends: 453 [2021-11-02 13:24:05,233 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 524.37ms TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-02 13:24:05,233 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 895 mSDsluCounter, 1050 mSDsCounter, 0 mSdLazyCounter, 1558 mSolverCounterSat, 11 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7768.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 895 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.91ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1558 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8566.88ms IncrementalHoareTripleChecker+Time [2021-11-02 13:24:05,234 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [895 Valid, 0 Invalid, 1570 Unknown, 0 Unchecked, 14.91ms Time], IncrementalHoareTripleChecker [11 Valid, 1558 Invalid, 1 Unknown, 0 Unchecked, 8566.88ms Time] [2021-11-02 13:24:05,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2021-11-02 13:24:05,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 317. [2021-11-02 13:24:05,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 309 states have (on average 1.233009708737864) internal successors, (381), 316 states have internal predecessors, (381), 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 13:24:05,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 381 transitions. [2021-11-02 13:24:05,248 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 381 transitions. Word has length 102 [2021-11-02 13:24:05,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:24:05,248 INFO L470 AbstractCegarLoop]: Abstraction has 317 states and 381 transitions. [2021-11-02 13:24:05,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 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 13:24:05,249 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 381 transitions. [2021-11-02 13:24:05,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-02 13:24:05,249 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:24:05,250 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:24:05,289 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-02 13:24:05,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-02 13:24:05,488 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-02 13:24:05,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:24:05,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1499636899, now seen corresponding path program 1 times [2021-11-02 13:24:05,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:24:05,488 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486374376] [2021-11-02 13:24:05,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:24:05,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:24:05,562 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 13:24:05,563 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1848613702] [2021-11-02 13:24:05,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:24:05,563 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:24:05,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 13:24:05,564 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 13:24:05,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-02 13:24:06,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:24:06,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 3050 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 13:24:06,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 13:24:06,509 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 13:24:06,509 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 13:24:06,509 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:24:06,509 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486374376] [2021-11-02 13:24:06,509 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 13:24:06,509 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848613702] [2021-11-02 13:24:06,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1848613702] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:24:06,509 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:24:06,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 13:24:06,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93423499] [2021-11-02 13:24:06,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 13:24:06,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:24:06,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 13:24:06,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 13:24:06,510 INFO L87 Difference]: Start difference. First operand 317 states and 381 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 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 13:24:08,566 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 13:24:11,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:24:11,705 INFO L93 Difference]: Finished difference Result 576 states and 697 transitions. [2021-11-02 13:24:11,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 13:24:11,705 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 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 102 [2021-11-02 13:24:11,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:24:11,706 INFO L225 Difference]: With dead ends: 576 [2021-11-02 13:24:11,706 INFO L226 Difference]: Without dead ends: 293 [2021-11-02 13:24:11,707 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.56ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 13:24:11,707 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 7 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 844 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4627.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.76ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 844 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5122.01ms IncrementalHoareTripleChecker+Time [2021-11-02 13:24:11,708 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 0 Invalid, 861 Unknown, 0 Unchecked, 4.76ms Time], IncrementalHoareTripleChecker [16 Valid, 844 Invalid, 1 Unknown, 0 Unchecked, 5122.01ms Time] [2021-11-02 13:24:11,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2021-11-02 13:24:11,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 249. [2021-11-02 13:24:11,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 241 states have (on average 1.2282157676348548) internal successors, (296), 248 states have internal predecessors, (296), 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 13:24:11,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 296 transitions. [2021-11-02 13:24:11,717 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 296 transitions. Word has length 102 [2021-11-02 13:24:11,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:24:11,717 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 296 transitions. [2021-11-02 13:24:11,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 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 13:24:11,718 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 296 transitions. [2021-11-02 13:24:11,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-02 13:24:11,718 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:24:11,718 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:24:11,750 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-02 13:24:11,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-02 13:24:11,919 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-02 13:24:11,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:24:11,920 INFO L85 PathProgramCache]: Analyzing trace with hash 591298484, now seen corresponding path program 1 times [2021-11-02 13:24:11,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:24:11,920 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057824084] [2021-11-02 13:24:11,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:24:11,920 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:24:11,978 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 13:24:11,979 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1292950032] [2021-11-02 13:24:11,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:24:11,980 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:24:11,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 13:24:11,981 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 13:24:11,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-02 13:24:12,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:24:12,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 3071 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-02 13:24:12,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 13:24:13,123 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-02 13:24:13,123 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 1 case distinctions, treesize of input 18 treesize of output 19 [2021-11-02 13:24:13,163 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 35 treesize of output 17 [2021-11-02 13:24:13,238 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 13:24:13,238 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 13:24:13,238 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:24:13,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057824084] [2021-11-02 13:24:13,238 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 13:24:13,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292950032] [2021-11-02 13:24:13,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1292950032] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:24:13,238 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:24:13,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 13:24:13,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412635408] [2021-11-02 13:24:13,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 13:24:13,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:24:13,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 13:24:13,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 13:24:13,240 INFO L87 Difference]: Start difference. First operand 249 states and 296 transitions. Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 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 13:24:16,642 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.40s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:24:20,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:24:20,143 INFO L93 Difference]: Finished difference Result 431 states and 522 transitions. [2021-11-02 13:24:20,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 13:24:20,144 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 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 107 [2021-11-02 13:24:20,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:24:20,145 INFO L225 Difference]: With dead ends: 431 [2021-11-02 13:24:20,145 INFO L226 Difference]: Without dead ends: 340 [2021-11-02 13:24:20,145 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 135.57ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-02 13:24:20,146 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 354 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 947 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6081.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.45ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 947 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6775.92ms IncrementalHoareTripleChecker+Time [2021-11-02 13:24:20,146 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [354 Valid, 0 Invalid, 950 Unknown, 0 Unchecked, 6.45ms Time], IncrementalHoareTripleChecker [2 Valid, 947 Invalid, 1 Unknown, 0 Unchecked, 6775.92ms Time] [2021-11-02 13:24:20,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2021-11-02 13:24:20,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 249. [2021-11-02 13:24:20,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 241 states have (on average 1.2240663900414939) internal successors, (295), 248 states have internal predecessors, (295), 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 13:24:20,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 295 transitions. [2021-11-02 13:24:20,154 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 295 transitions. Word has length 107 [2021-11-02 13:24:20,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:24:20,154 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 295 transitions. [2021-11-02 13:24:20,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 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 13:24:20,155 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 295 transitions. [2021-11-02 13:24:20,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-02 13:24:20,155 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:24:20,155 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:24:20,185 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-02 13:24:20,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-02 13:24:20,356 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-02 13:24:20,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:24:20,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1271356854, now seen corresponding path program 1 times [2021-11-02 13:24:20,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:24:20,357 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936343725] [2021-11-02 13:24:20,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:24:20,358 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:24:20,408 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 13:24:20,408 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [778668748] [2021-11-02 13:24:20,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:24:20,409 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:24:20,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 13:24:20,412 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 13:24:20,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-02 13:24:21,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:24:21,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 3074 conjuncts, 52 conjunts are in the unsatisfiable core [2021-11-02 13:24:21,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 13:24:22,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 13:24:22,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 13:24:22,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 13:24:22,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 13:24:22,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 13:24:22,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 13:24:22,937 INFO L354 Elim1Store]: treesize reduction 254, result has 17.3 percent of original size [2021-11-02 13:24:22,938 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 134 treesize of output 168 [2021-11-02 13:24:22,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 13:24:22,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 13:24:22,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 13:24:22,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 13:24:22,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 13:24:22,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 13:24:23,354 INFO L354 Elim1Store]: treesize reduction 254, result has 17.3 percent of original size [2021-11-02 13:24:23,354 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 159 treesize of output 193 [2021-11-02 13:24:23,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 13:24:23,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 13:24:23,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 13:24:23,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 13:24:23,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 13:24:23,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 13:24:23,572 INFO L354 Elim1Store]: treesize reduction 150, result has 19.8 percent of original size [2021-11-02 13:24:23,573 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 184 treesize of output 200 [2021-11-02 13:24:23,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 13:24:23,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 13:24:23,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 13:24:23,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 13:24:23,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 13:24:23,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 13:24:23,770 INFO L354 Elim1Store]: treesize reduction 150, result has 19.8 percent of original size [2021-11-02 13:24:23,770 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 191 treesize of output 207 [2021-11-02 13:24:24,988 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 32 treesize of output 24 [2021-11-02 13:24:24,996 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 21 treesize of output 13 [2021-11-02 13:24:25,074 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 13:24:25,074 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 13:24:25,074 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:24:25,074 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936343725] [2021-11-02 13:24:25,074 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 13:24:25,074 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [778668748] [2021-11-02 13:24:25,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [778668748] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:24:25,074 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:24:25,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-02 13:24:25,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652653524] [2021-11-02 13:24:25,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-02 13:24:25,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:24:25,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-02 13:24:25,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-11-02 13:24:25,076 INFO L87 Difference]: Start difference. First operand 249 states and 295 transitions. Second operand has 10 states, 10 states have (on average 10.7) internal successors, (107), 10 states have internal predecessors, (107), 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 13:24:28,211 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:24:33,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:24:33,267 INFO L93 Difference]: Finished difference Result 318 states and 376 transitions. [2021-11-02 13:24:33,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-02 13:24:33,268 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.7) internal successors, (107), 10 states have internal predecessors, (107), 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 107 [2021-11-02 13:24:33,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:24:33,269 INFO L225 Difference]: With dead ends: 318 [2021-11-02 13:24:33,269 INFO L226 Difference]: Without dead ends: 250 [2021-11-02 13:24:33,269 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1115.96ms TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2021-11-02 13:24:33,270 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 569 mSDsluCounter, 699 mSDsCounter, 0 mSdLazyCounter, 1198 mSolverCounterSat, 32 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6696.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 569 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.25ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1198 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7430.33ms IncrementalHoareTripleChecker+Time [2021-11-02 13:24:33,270 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [569 Valid, 0 Invalid, 1231 Unknown, 0 Unchecked, 11.25ms Time], IncrementalHoareTripleChecker [32 Valid, 1198 Invalid, 1 Unknown, 0 Unchecked, 7430.33ms Time] [2021-11-02 13:24:33,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-11-02 13:24:33,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 247. [2021-11-02 13:24:33,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 239 states have (on average 1.217573221757322) internal successors, (291), 246 states have internal predecessors, (291), 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 13:24:33,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 291 transitions. [2021-11-02 13:24:33,304 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 291 transitions. Word has length 107 [2021-11-02 13:24:33,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:24:33,305 INFO L470 AbstractCegarLoop]: Abstraction has 247 states and 291 transitions. [2021-11-02 13:24:33,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.7) internal successors, (107), 10 states have internal predecessors, (107), 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 13:24:33,305 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 291 transitions. [2021-11-02 13:24:33,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-02 13:24:33,305 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:24:33,306 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:24:33,332 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-11-02 13:24:33,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:24:33,507 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-02 13:24:33,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:24:33,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1070488272, now seen corresponding path program 1 times [2021-11-02 13:24:33,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:24:33,507 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319518707] [2021-11-02 13:24:33,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:24:33,507 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:24:33,587 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 13:24:33,590 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [323085663] [2021-11-02 13:24:33,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:24:33,590 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:24:33,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 13:24:33,604 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 13:24:33,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-02 13:24:34,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:24:34,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 3079 conjuncts, 131 conjunts are in the unsatisfiable core [2021-11-02 13:24:34,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 13:24:35,208 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 13:24:35,227 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 13:24:35,786 INFO L354 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2021-11-02 13:24:35,787 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 37 [2021-11-02 13:24:35,982 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-02 13:24:35,983 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19 [2021-11-02 13:24:36,300 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-02 13:24:36,300 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 27 treesize of output 15 [2021-11-02 13:24:38,053 INFO L354 Elim1Store]: treesize reduction 160, result has 6.4 percent of original size [2021-11-02 13:24:38,053 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 113 treesize of output 111 [2021-11-02 13:24:38,100 INFO L354 Elim1Store]: treesize reduction 89, result has 11.0 percent of original size [2021-11-02 13:24:38,100 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 106 treesize of output 102 [2021-11-02 13:24:38,166 INFO L354 Elim1Store]: treesize reduction 160, result has 6.4 percent of original size [2021-11-02 13:24:38,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 91 treesize of output 85 [2021-11-02 13:24:38,205 INFO L354 Elim1Store]: treesize reduction 89, result has 11.0 percent of original size [2021-11-02 13:24:38,205 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 84 treesize of output 76 [2021-11-02 13:24:38,930 INFO L354 Elim1Store]: treesize reduction 57, result has 17.4 percent of original size [2021-11-02 13:24:38,930 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 133 treesize of output 95 [2021-11-02 13:24:39,013 INFO L354 Elim1Store]: treesize reduction 41, result has 22.6 percent of original size [2021-11-02 13:24:39,013 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 83 treesize of output 65 [2021-11-02 13:24:39,261 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 13:24:39,262 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 13:24:39,262 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:24:39,262 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319518707] [2021-11-02 13:24:39,262 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 13:24:39,262 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323085663] [2021-11-02 13:24:39,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [323085663] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:24:39,262 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:24:39,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-02 13:24:39,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793213891] [2021-11-02 13:24:39,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-02 13:24:39,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:24:39,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-02 13:24:39,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2021-11-02 13:24:39,263 INFO L87 Difference]: Start difference. First operand 247 states and 291 transitions. Second operand has 20 states, 20 states have (on average 5.4) internal successors, (108), 19 states have internal predecessors, (108), 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 13:24:42,506 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:25:00,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:25:00,089 INFO L93 Difference]: Finished difference Result 624 states and 741 transitions. [2021-11-02 13:25:00,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-02 13:25:00,090 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.4) internal successors, (108), 19 states have internal predecessors, (108), 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 108 [2021-11-02 13:25:00,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:25:00,091 INFO L225 Difference]: With dead ends: 624 [2021-11-02 13:25:00,091 INFO L226 Difference]: Without dead ends: 521 [2021-11-02 13:25:00,092 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 5310.88ms TimeCoverageRelationStatistics Valid=403, Invalid=1489, Unknown=0, NotChecked=0, Total=1892 [2021-11-02 13:25:00,092 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1832 mSDsluCounter, 2718 mSDsCounter, 0 mSdLazyCounter, 3789 mSolverCounterSat, 146 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15011.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1832 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 51.02ms SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 3789 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 454 IncrementalHoareTripleChecker+Unchecked, 16637.88ms IncrementalHoareTripleChecker+Time [2021-11-02 13:25:00,092 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1832 Valid, 0 Invalid, 4390 Unknown, 0 Unchecked, 51.02ms Time], IncrementalHoareTripleChecker [146 Valid, 3789 Invalid, 1 Unknown, 454 Unchecked, 16637.88ms Time] [2021-11-02 13:25:00,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2021-11-02 13:25:00,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 292. [2021-11-02 13:25:00,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 284 states have (on average 1.204225352112676) internal successors, (342), 291 states have internal predecessors, (342), 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 13:25:00,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 342 transitions. [2021-11-02 13:25:00,106 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 342 transitions. Word has length 108 [2021-11-02 13:25:00,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:25:00,107 INFO L470 AbstractCegarLoop]: Abstraction has 292 states and 342 transitions. [2021-11-02 13:25:00,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.4) internal successors, (108), 19 states have internal predecessors, (108), 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 13:25:00,107 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 342 transitions. [2021-11-02 13:25:00,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-02 13:25:00,108 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:25:00,108 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, 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 13:25:00,139 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-02 13:25:00,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:25:00,323 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-02 13:25:00,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:25:00,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1165641827, now seen corresponding path program 1 times [2021-11-02 13:25:00,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:25:00,323 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651797061] [2021-11-02 13:25:00,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:25:00,323 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:25:00,383 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 13:25:00,383 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1272641340] [2021-11-02 13:25:00,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:25:00,383 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:25:00,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 13:25:00,389 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 13:25:00,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-02 13:35:54,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:35:54,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 3125 conjuncts, 176 conjunts are in the unsatisfiable core [2021-11-02 13:35:54,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 13:35:55,380 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 13 treesize of output 9 [2021-11-02 13:35:56,063 INFO L354 Elim1Store]: treesize reduction 15, result has 42.3 percent of original size [2021-11-02 13:35:56,063 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 27 treesize of output 26 [2021-11-02 13:35:57,610 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 13:35:57,679 INFO L354 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2021-11-02 13:35:57,680 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 50 [2021-11-02 13:35:57,688 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 56 treesize of output 52 [2021-11-02 13:35:58,066 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 59 treesize of output 51 [2021-11-02 13:35:58,073 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 48 treesize of output 32 [2021-11-02 13:35:58,201 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 44 treesize of output 28 [2021-11-02 13:35:58,953 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 13:35:58,953 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 13:35:58,953 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:35:58,953 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651797061] [2021-11-02 13:35:58,953 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 13:35:58,953 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272641340] [2021-11-02 13:35:58,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1272641340] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:35:58,953 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:35:58,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-11-02 13:35:58,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521198196] [2021-11-02 13:35:58,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-02 13:35:58,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:35:58,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-02 13:35:58,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=409, Unknown=0, NotChecked=0, Total=462 [2021-11-02 13:35:58,955 INFO L87 Difference]: Start difference. First operand 292 states and 342 transitions. Second operand has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 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 13:36:01,940 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.98s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:36:14,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:36:14,072 INFO L93 Difference]: Finished difference Result 620 states and 722 transitions. [2021-11-02 13:36:14,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-02 13:36:14,072 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 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 111 [2021-11-02 13:36:14,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:36:14,073 INFO L225 Difference]: With dead ends: 620 [2021-11-02 13:36:14,073 INFO L226 Difference]: Without dead ends: 347 [2021-11-02 13:36:14,074 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 4144.81ms TimeCoverageRelationStatistics Valid=152, Invalid=1038, Unknown=0, NotChecked=0, Total=1190 [2021-11-02 13:36:14,074 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 97 mSDsluCounter, 2792 mSDsCounter, 0 mSdLazyCounter, 3141 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11593.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.20ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 3141 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 896 IncrementalHoareTripleChecker+Unchecked, 12862.48ms IncrementalHoareTripleChecker+Time [2021-11-02 13:36:14,074 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 0 Invalid, 4053 Unknown, 0 Unchecked, 24.20ms Time], IncrementalHoareTripleChecker [15 Valid, 3141 Invalid, 1 Unknown, 896 Unchecked, 12862.48ms Time] [2021-11-02 13:36:14,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2021-11-02 13:36:14,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 297. [2021-11-02 13:36:14,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 289 states have (on average 1.2006920415224913) internal successors, (347), 296 states have internal predecessors, (347), 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 13:36:14,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 347 transitions. [2021-11-02 13:36:14,087 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 347 transitions. Word has length 111 [2021-11-02 13:36:14,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:36:14,087 INFO L470 AbstractCegarLoop]: Abstraction has 297 states and 347 transitions. [2021-11-02 13:36:14,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 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 13:36:14,088 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 347 transitions. [2021-11-02 13:36:14,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-02 13:36:14,088 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:36:14,088 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, 1, 1, 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 13:36:14,297 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forcibly destroying the process [2021-11-02 13:36:14,373 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 137 [2021-11-02 13:36:14,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-11-02 13:36:14,374 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-02 13:36:14,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:36:14,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1495902649, now seen corresponding path program 1 times [2021-11-02 13:36:14,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:36:14,375 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629935297] [2021-11-02 13:36:14,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:36:14,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:36:14,434 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 13:36:14,434 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [189001131] [2021-11-02 13:36:14,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:36:14,434 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:36:14,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 13:36:14,435 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 13:36:14,486 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-02 13:36:15,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:36:15,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 3134 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-02 13:36:15,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 13:36:15,667 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 13:36:15,667 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 13:36:15,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:36:15,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629935297] [2021-11-02 13:36:15,667 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 13:36:15,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [189001131] [2021-11-02 13:36:15,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [189001131] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:36:15,667 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:36:15,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 13:36:15,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219533972] [2021-11-02 13:36:15,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 13:36:15,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:36:15,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 13:36:15,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 13:36:15,668 INFO L87 Difference]: Start difference. First operand 297 states and 347 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 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 13:36:17,727 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:36:20,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:36:20,691 INFO L93 Difference]: Finished difference Result 575 states and 673 transitions. [2021-11-02 13:36:20,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 13:36:20,692 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 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 113 [2021-11-02 13:36:20,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:36:20,692 INFO L225 Difference]: With dead ends: 575 [2021-11-02 13:36:20,692 INFO L226 Difference]: Without dead ends: 288 [2021-11-02 13:36:20,693 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 176.48ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-02 13:36:20,693 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 261 mSDsluCounter, 805 mSDsCounter, 0 mSdLazyCounter, 1117 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4469.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.50ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1117 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4871.88ms IncrementalHoareTripleChecker+Time [2021-11-02 13:36:20,694 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [261 Valid, 0 Invalid, 1125 Unknown, 0 Unchecked, 5.50ms Time], IncrementalHoareTripleChecker [7 Valid, 1117 Invalid, 1 Unknown, 0 Unchecked, 4871.88ms Time] [2021-11-02 13:36:20,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2021-11-02 13:36:20,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 288. [2021-11-02 13:36:20,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 280 states have (on average 1.1964285714285714) internal successors, (335), 287 states have internal predecessors, (335), 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 13:36:20,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 335 transitions. [2021-11-02 13:36:20,715 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 335 transitions. Word has length 113 [2021-11-02 13:36:20,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:36:20,715 INFO L470 AbstractCegarLoop]: Abstraction has 288 states and 335 transitions. [2021-11-02 13:36:20,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 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 13:36:20,716 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 335 transitions. [2021-11-02 13:36:20,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-02 13:36:20,716 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:36:20,716 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, 1, 1, 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 13:36:20,743 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-02 13:36:20,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:36:20,932 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-02 13:36:20,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:36:20,932 INFO L85 PathProgramCache]: Analyzing trace with hash 2133336383, now seen corresponding path program 1 times [2021-11-02 13:36:20,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:36:20,932 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567064421] [2021-11-02 13:36:20,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:36:20,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:36:20,988 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 13:36:20,988 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [416763742] [2021-11-02 13:36:20,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:36:20,988 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:36:20,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 13:36:21,004 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 13:36:21,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-02 13:36:21,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:36:21,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 3134 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-02 13:36:21,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 13:36:22,199 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 13:36:22,199 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 13:36:22,199 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:36:22,199 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567064421] [2021-11-02 13:36:22,199 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 13:36:22,199 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416763742] [2021-11-02 13:36:22,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [416763742] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:36:22,199 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:36:22,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 13:36:22,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000416994] [2021-11-02 13:36:22,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 13:36:22,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:36:22,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 13:36:22,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 13:36:22,200 INFO L87 Difference]: Start difference. First operand 288 states and 335 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 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 13:36:24,252 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 13:36:24,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:36:24,691 INFO L93 Difference]: Finished difference Result 288 states and 335 transitions. [2021-11-02 13:36:24,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 13:36:24,692 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 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 113 [2021-11-02 13:36:24,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:36:24,692 INFO L225 Difference]: With dead ends: 288 [2021-11-02 13:36:24,692 INFO L226 Difference]: Without dead ends: 0 [2021-11-02 13:36:24,693 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 148.12ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-02 13:36:24,693 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 6 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2208.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.29ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2423.32ms IncrementalHoareTripleChecker+Time [2021-11-02 13:36:24,693 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 0 Invalid, 81 Unknown, 0 Unchecked, 0.29ms Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 1 Unknown, 0 Unchecked, 2423.32ms Time] [2021-11-02 13:36:24,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-02 13:36:24,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-02 13:36:24,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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 13:36:24,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-02 13:36:24,694 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 113 [2021-11-02 13:36:24,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:36:24,694 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-02 13:36:24,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 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 13:36:24,695 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-02 13:36:24,695 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-02 13:36:24,697 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (7 of 8 remaining) [2021-11-02 13:36:24,697 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (6 of 8 remaining) [2021-11-02 13:36:24,697 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (5 of 8 remaining) [2021-11-02 13:36:24,698 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (4 of 8 remaining) [2021-11-02 13:36:24,698 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (3 of 8 remaining) [2021-11-02 13:36:24,698 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (2 of 8 remaining) [2021-11-02 13:36:24,698 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION (1 of 8 remaining) [2021-11-02 13:36:24,698 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION (0 of 8 remaining) [2021-11-02 13:36:24,724 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-02 13:36:24,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:36:24,920 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-02 13:36:24,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 13:36:24,940 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 13:36:24,946 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 13:36:24,947 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 13:36:24,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 13:36:24,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 13:36:24,953 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 13:36:24,953 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 13:36:24,955 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 13:36:24,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 13:36:24,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 13:36:24,957 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 13:36:24,963 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 13:36:24,964 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 13:36:24,965 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 13:36:24,966 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 13:36:24,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 13:36:24,974 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 13:36:24,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 13:36:24,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 13:36:24,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 13:36:24,976 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 13:36:24,976 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 13:36:24,976 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 13:36:24,982 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 13:36:24,986 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 13:36:24,986 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 13:36:24,987 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 13:36:25,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 13:36:25,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 13:36:25,018 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 13:36:25,023 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 13:36:25,028 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 13:36:25,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 13:36:25,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 13:36:25,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 13:36:25,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 13:36:25,033 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 13:36:25,037 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 13:36:25,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 13:36:25,041 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 13:36:25,042 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 13:36:25,047 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 13:36:25,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 13:36:25,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 13:36:25,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 13:36:25,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 13:36:25,059 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 13:36:25,059 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 13:36:25,061 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 13:36:25,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 13:36:25,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 13:36:25,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 13:36:25,066 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms Killed by 15