./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_priority_queue_push_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fcb8e130 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_priority_queue_push_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 d8b9169d0d63d8238da177db4999afabb0efa6e97e1e7cd257e8474f76788f17 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-fcb8e13 [2021-11-22 20:32:33,520 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 20:32:33,527 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 20:32:33,557 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 20:32:33,558 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 20:32:33,559 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 20:32:33,559 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 20:32:33,561 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 20:32:33,562 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 20:32:33,562 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 20:32:33,563 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 20:32:33,564 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 20:32:33,564 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 20:32:33,565 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 20:32:33,566 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 20:32:33,566 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 20:32:33,567 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 20:32:33,568 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 20:32:33,569 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 20:32:33,570 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 20:32:33,571 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 20:32:33,571 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 20:32:33,572 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 20:32:33,573 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 20:32:33,574 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 20:32:33,574 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 20:32:33,575 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 20:32:33,575 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 20:32:33,576 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 20:32:33,576 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 20:32:33,576 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 20:32:33,577 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 20:32:33,577 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 20:32:33,578 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 20:32:33,579 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 20:32:33,579 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 20:32:33,579 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 20:32:33,580 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 20:32:33,580 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 20:32:33,580 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 20:32:33,581 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 20:32:33,582 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-22 20:32:33,598 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 20:32:33,601 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 20:32:33,602 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 20:32:33,602 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 20:32:33,603 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 20:32:33,603 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 20:32:33,603 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 20:32:33,603 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 20:32:33,604 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 20:32:33,604 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 20:32:33,604 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 20:32:33,604 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 20:32:33,605 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 20:32:33,605 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 20:32:33,605 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 20:32:33,605 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 20:32:33,605 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 20:32:33,605 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 20:32:33,605 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 20:32:33,606 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 20:32:33,606 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 20:32:33,606 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 20:32:33,606 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 20:32:33,606 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 20:32:33,606 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 20:32:33,606 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 20:32:33,606 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 20:32:33,607 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 20:32:33,607 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 20:32:33,607 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d8b9169d0d63d8238da177db4999afabb0efa6e97e1e7cd257e8474f76788f17 [2021-11-22 20:32:33,805 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 20:32:33,830 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 20:32:33,832 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 20:32:33,833 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 20:32:33,833 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 20:32:33,834 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_priority_queue_push_harness.i [2021-11-22 20:32:33,888 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6439ca6f/48e4c5a1fe4341f6975983e8edd23c35/FLAGde2b16a86 [2021-11-22 20:32:34,456 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 20:32:34,457 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_push_harness.i [2021-11-22 20:32:34,478 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6439ca6f/48e4c5a1fe4341f6975983e8edd23c35/FLAGde2b16a86 [2021-11-22 20:32:34,933 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6439ca6f/48e4c5a1fe4341f6975983e8edd23c35 [2021-11-22 20:32:34,935 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 20:32:34,936 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 20:32:34,939 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 20:32:34,939 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 20:32:34,941 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 20:32:34,942 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 08:32:34" (1/1) ... [2021-11-22 20:32:34,943 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@eda5f2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:32:34, skipping insertion in model container [2021-11-22 20:32:34,943 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 08:32:34" (1/1) ... [2021-11-22 20:32:34,947 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 20:32:35,026 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 20:32:35,222 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_push_harness.i[4497,4510] [2021-11-22 20:32:35,226 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_push_harness.i[4557,4570] [2021-11-22 20:32:35,798 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:32:35,798 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:32:35,799 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:32:35,799 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:32:35,800 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:32:35,809 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:32:35,823 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:32:35,824 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:32:35,825 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:32:35,826 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:32:35,827 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:32:35,828 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:32:35,828 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:32:36,046 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-22 20:32:36,047 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-22 20:32:36,047 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-22 20:32:36,048 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-22 20:32:36,048 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-22 20:32:36,049 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-22 20:32:36,049 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-22 20:32:36,050 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-22 20:32:36,050 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-22 20:32:36,050 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-22 20:32:36,140 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-22 20:32:36,186 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:32:36,203 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:32:36,263 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:32:36,264 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:32:36,264 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:32:36,264 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:32:36,265 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:32:36,265 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:32:36,266 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:32:36,267 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:32:36,268 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:32:36,268 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:32:36,268 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:32:36,269 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:32:36,269 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:32:36,272 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:32:36,273 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:32:36,273 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:32:36,273 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:32:36,279 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:32:36,279 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:32:36,288 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:32:36,289 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:32:36,290 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:32:36,309 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 20:32:36,335 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 20:32:36,351 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_push_harness.i[4497,4510] [2021-11-22 20:32:36,352 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_push_harness.i[4557,4570] [2021-11-22 20:32:36,389 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:32:36,389 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:32:36,389 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:32:36,390 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:32:36,391 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:32:36,398 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:32:36,398 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:32:36,399 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:32:36,399 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:32:36,399 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:32:36,400 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:32:36,400 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:32:36,400 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:32:36,423 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-22 20:32:36,424 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-22 20:32:36,424 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-22 20:32:36,425 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-22 20:32:36,425 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-22 20:32:36,426 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-22 20:32:36,426 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-22 20:32:36,426 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-22 20:32:36,426 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-22 20:32:36,427 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-22 20:32:36,444 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-22 20:32:36,460 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:32:36,463 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:32:36,481 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:32:36,482 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:32:36,482 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:32:36,482 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:32:36,482 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:32:36,482 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:32:36,483 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:32:36,483 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:32:36,483 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:32:36,484 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:32:36,484 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:32:36,484 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:32:36,484 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:32:36,486 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:32:36,486 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:32:36,486 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:32:36,487 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:32:36,488 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:32:36,488 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:32:36,493 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:32:36,494 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:32:36,495 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:32:36,503 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 20:32:36,633 INFO L208 MainTranslator]: Completed translation [2021-11-22 20:32:36,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:32:36 WrapperNode [2021-11-22 20:32:36,633 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 20:32:36,634 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 20:32:36,634 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 20:32:36,634 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 20:32:36,639 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:32:36" (1/1) ... [2021-11-22 20:32:36,703 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:32:36" (1/1) ... [2021-11-22 20:32:36,944 INFO L137 Inliner]: procedures = 697, calls = 1879, calls flagged for inlining = 786, calls inlined = 961, statements flattened = 12923 [2021-11-22 20:32:36,945 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 20:32:36,946 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 20:32:36,946 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 20:32:36,946 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 20:32:36,960 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:32:36" (1/1) ... [2021-11-22 20:32:36,960 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:32:36" (1/1) ... [2021-11-22 20:32:37,011 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:32:36" (1/1) ... [2021-11-22 20:32:37,017 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:32:36" (1/1) ... [2021-11-22 20:32:37,165 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:32:36" (1/1) ... [2021-11-22 20:32:37,197 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:32:36" (1/1) ... [2021-11-22 20:32:37,221 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:32:36" (1/1) ... [2021-11-22 20:32:37,256 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 20:32:37,257 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 20:32:37,257 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 20:32:37,257 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 20:32:37,258 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:32:36" (1/1) ... [2021-11-22 20:32:37,263 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 20:32:37,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:32:37,280 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 20:32:37,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 20:32:37,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-22 20:32:37,309 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-22 20:32:37,309 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-22 20:32:37,309 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 20:32:37,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-22 20:32:37,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 20:32:37,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 20:32:37,310 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-22 20:32:37,310 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-22 20:32:37,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-22 20:32:37,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-22 20:32:37,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 20:32:37,690 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 20:32:37,691 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 20:32:41,038 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 20:32:41,051 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 20:32:41,051 INFO L301 CfgBuilder]: Removed 23 assume(true) statements. [2021-11-22 20:32:41,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 08:32:41 BoogieIcfgContainer [2021-11-22 20:32:41,053 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 20:32:41,054 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 20:32:41,054 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 20:32:41,057 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 20:32:41,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 08:32:34" (1/3) ... [2021-11-22 20:32:41,057 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c8813a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 08:32:41, skipping insertion in model container [2021-11-22 20:32:41,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:32:36" (2/3) ... [2021-11-22 20:32:41,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c8813a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 08:32:41, skipping insertion in model container [2021-11-22 20:32:41,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 08:32:41" (3/3) ... [2021-11-22 20:32:41,058 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_push_harness.i [2021-11-22 20:32:41,061 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 20:32:41,062 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 64 error locations. [2021-11-22 20:32:41,092 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 20:32:41,096 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-22 20:32:41,096 INFO L340 AbstractCegarLoop]: Starting to check reachability of 64 error locations. [2021-11-22 20:32:41,123 INFO L276 IsEmpty]: Start isEmpty. Operand has 2419 states, 2354 states have (on average 1.413338997451147) internal successors, (3327), 2418 states have internal predecessors, (3327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:32:41,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-22 20:32:41,129 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:32:41,130 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] [2021-11-22 20:32:41,130 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-22 20:32:41,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:32:41,133 INFO L85 PathProgramCache]: Analyzing trace with hash -938316165, now seen corresponding path program 1 times [2021-11-22 20:32:41,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:32:41,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961622737] [2021-11-22 20:32:41,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:32:41,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:32:41,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:32:41,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:32:41,497 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:32:41,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961622737] [2021-11-22 20:32:41,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961622737] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:32:41,498 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:32:41,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 20:32:41,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122872850] [2021-11-22 20:32:41,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:32:41,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-22 20:32:41,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:32:41,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-22 20:32:41,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 20:32:41,538 INFO L87 Difference]: Start difference. First operand has 2419 states, 2354 states have (on average 1.413338997451147) internal successors, (3327), 2418 states have internal predecessors, (3327), 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 34.0) internal successors, (68), 2 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) [2021-11-22 20:32:41,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:32:41,644 INFO L93 Difference]: Finished difference Result 4831 states and 6646 transitions. [2021-11-22 20:32:41,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 20:32:41,645 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 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 [2021-11-22 20:32:41,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:32:41,659 INFO L225 Difference]: With dead ends: 4831 [2021-11-22 20:32:41,659 INFO L226 Difference]: Without dead ends: 2413 [2021-11-22 20:32:41,665 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 20:32:41,668 INFO L933 BasicCegarLoop]: 3125 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3125 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 20:32:41,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 3125 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 20:32:41,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2413 states. [2021-11-22 20:32:41,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2413 to 2413. [2021-11-22 20:32:41,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2413 states, 2349 states have (on average 1.3282247765006385) internal successors, (3120), 2412 states have internal predecessors, (3120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:32:41,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2413 states to 2413 states and 3120 transitions. [2021-11-22 20:32:41,755 INFO L78 Accepts]: Start accepts. Automaton has 2413 states and 3120 transitions. Word has length 68 [2021-11-22 20:32:41,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:32:41,755 INFO L470 AbstractCegarLoop]: Abstraction has 2413 states and 3120 transitions. [2021-11-22 20:32:41,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 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) [2021-11-22 20:32:41,755 INFO L276 IsEmpty]: Start isEmpty. Operand 2413 states and 3120 transitions. [2021-11-22 20:32:41,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-22 20:32:41,757 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:32:41,757 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] [2021-11-22 20:32:41,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 20:32:41,758 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-22 20:32:41,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:32:41,758 INFO L85 PathProgramCache]: Analyzing trace with hash -438718995, now seen corresponding path program 1 times [2021-11-22 20:32:41,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:32:41,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647241811] [2021-11-22 20:32:41,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:32:41,759 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:32:41,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:32:41,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:32:41,951 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:32:41,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647241811] [2021-11-22 20:32:41,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647241811] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:32:41,951 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:32:41,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 20:32:41,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943456553] [2021-11-22 20:32:41,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:32:41,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 20:32:41,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:32:41,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 20:32:41,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 20:32:41,954 INFO L87 Difference]: Start difference. First operand 2413 states and 3120 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) [2021-11-22 20:32:42,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:32:42,073 INFO L93 Difference]: Finished difference Result 4746 states and 6135 transitions. [2021-11-22 20:32:42,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 20:32:42,074 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 [2021-11-22 20:32:42,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:32:42,080 INFO L225 Difference]: With dead ends: 4746 [2021-11-22 20:32:42,080 INFO L226 Difference]: Without dead ends: 2413 [2021-11-22 20:32:42,083 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 20:32:42,084 INFO L933 BasicCegarLoop]: 3105 mSDtfsCounter, 3314 mSDsluCounter, 2861 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3314 SdHoareTripleChecker+Valid, 5966 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 20:32:42,084 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3314 Valid, 5966 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 20:32:42,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2413 states. [2021-11-22 20:32:42,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2413 to 2413. [2021-11-22 20:32:42,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2413 states, 2349 states have (on average 1.326947637292465) internal successors, (3117), 2412 states have internal predecessors, (3117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:32:42,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2413 states to 2413 states and 3117 transitions. [2021-11-22 20:32:42,129 INFO L78 Accepts]: Start accepts. Automaton has 2413 states and 3117 transitions. Word has length 68 [2021-11-22 20:32:42,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:32:42,130 INFO L470 AbstractCegarLoop]: Abstraction has 2413 states and 3117 transitions. [2021-11-22 20:32:42,132 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) [2021-11-22 20:32:42,132 INFO L276 IsEmpty]: Start isEmpty. Operand 2413 states and 3117 transitions. [2021-11-22 20:32:42,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-22 20:32:42,138 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:32:42,138 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:32:42,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 20:32:42,138 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-22 20:32:42,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:32:42,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1398884469, now seen corresponding path program 1 times [2021-11-22 20:32:42,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:32:42,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795034745] [2021-11-22 20:32:42,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:32:42,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:32:42,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:32:42,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:32:42,331 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:32:42,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795034745] [2021-11-22 20:32:42,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795034745] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:32:42,332 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:32:42,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 20:32:42,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081375440] [2021-11-22 20:32:42,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:32:42,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 20:32:42,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:32:42,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 20:32:42,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-22 20:32:42,334 INFO L87 Difference]: Start difference. First operand 2413 states and 3117 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:32:43,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:32:43,427 INFO L93 Difference]: Finished difference Result 6609 states and 8479 transitions. [2021-11-22 20:32:43,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 20:32:43,428 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-11-22 20:32:43,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:32:43,442 INFO L225 Difference]: With dead ends: 6609 [2021-11-22 20:32:43,442 INFO L226 Difference]: Without dead ends: 4244 [2021-11-22 20:32:43,445 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-22 20:32:43,449 INFO L933 BasicCegarLoop]: 3084 mSDtfsCounter, 7899 mSDsluCounter, 5138 mSDsCounter, 0 mSdLazyCounter, 835 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7899 SdHoareTripleChecker+Valid, 8222 SdHoareTripleChecker+Invalid, 857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-22 20:32:43,450 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7899 Valid, 8222 Invalid, 857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 835 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-22 20:32:43,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4244 states. [2021-11-22 20:32:43,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4244 to 2413. [2021-11-22 20:32:43,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2413 states, 2349 states have (on average 1.3256704980842913) internal successors, (3114), 2412 states have internal predecessors, (3114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:32:43,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2413 states to 2413 states and 3114 transitions. [2021-11-22 20:32:43,504 INFO L78 Accepts]: Start accepts. Automaton has 2413 states and 3114 transitions. Word has length 76 [2021-11-22 20:32:43,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:32:43,505 INFO L470 AbstractCegarLoop]: Abstraction has 2413 states and 3114 transitions. [2021-11-22 20:32:43,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:32:43,505 INFO L276 IsEmpty]: Start isEmpty. Operand 2413 states and 3114 transitions. [2021-11-22 20:32:43,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-22 20:32:43,507 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:32:43,507 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] [2021-11-22 20:32:43,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-22 20:32:43,508 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-22 20:32:43,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:32:43,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1863320387, now seen corresponding path program 1 times [2021-11-22 20:32:43,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:32:43,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177271484] [2021-11-22 20:32:43,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:32:43,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:32:43,576 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:32:43,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [679567206] [2021-11-22 20:32:43,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:32:43,577 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:32:43,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:32:43,578 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) [2021-11-22 20:32:43,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-22 20:32:43,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:32:43,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 2484 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-22 20:32:43,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:32:44,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:32:44,137 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:32:44,137 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:32:44,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177271484] [2021-11-22 20:32:44,137 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:32:44,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679567206] [2021-11-22 20:32:44,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [679567206] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:32:44,137 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:32:44,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 20:32:44,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490343508] [2021-11-22 20:32:44,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:32:44,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 20:32:44,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:32:44,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 20:32:44,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-22 20:32:44,139 INFO L87 Difference]: Start difference. First operand 2413 states and 3114 transitions. Second operand has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:32:44,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:32:44,859 INFO L93 Difference]: Finished difference Result 6684 states and 8586 transitions. [2021-11-22 20:32:44,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 20:32:44,859 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 5 states have internal predecessors, (92), 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 92 [2021-11-22 20:32:44,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:32:44,869 INFO L225 Difference]: With dead ends: 6684 [2021-11-22 20:32:44,869 INFO L226 Difference]: Without dead ends: 4350 [2021-11-22 20:32:44,872 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-22 20:32:44,872 INFO L933 BasicCegarLoop]: 2962 mSDtfsCounter, 13975 mSDsluCounter, 5472 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13975 SdHoareTripleChecker+Valid, 8434 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-22 20:32:44,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13975 Valid, 8434 Invalid, 509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-22 20:32:44,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4350 states. [2021-11-22 20:32:44,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4350 to 2413. [2021-11-22 20:32:44,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2413 states, 2349 states have (on average 1.3243933588761174) internal successors, (3111), 2412 states have internal predecessors, (3111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:32:44,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2413 states to 2413 states and 3111 transitions. [2021-11-22 20:32:44,928 INFO L78 Accepts]: Start accepts. Automaton has 2413 states and 3111 transitions. Word has length 92 [2021-11-22 20:32:44,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:32:44,928 INFO L470 AbstractCegarLoop]: Abstraction has 2413 states and 3111 transitions. [2021-11-22 20:32:44,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:32:44,928 INFO L276 IsEmpty]: Start isEmpty. Operand 2413 states and 3111 transitions. [2021-11-22 20:32:44,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-22 20:32:44,929 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:32:44,929 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, 1, 1, 1] [2021-11-22 20:32:44,951 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-22 20:32:45,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:32:45,148 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-22 20:32:45,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:32:45,149 INFO L85 PathProgramCache]: Analyzing trace with hash 2019865383, now seen corresponding path program 1 times [2021-11-22 20:32:45,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:32:45,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577535342] [2021-11-22 20:32:45,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:32:45,149 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:32:45,190 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:32:45,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1895798337] [2021-11-22 20:32:45,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:32:45,190 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:32:45,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:32:45,191 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) [2021-11-22 20:32:45,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-22 20:32:45,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:32:45,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 2589 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-22 20:32:45,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:32:45,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:32:45,785 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:32:45,785 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:32:45,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577535342] [2021-11-22 20:32:45,785 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:32:45,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895798337] [2021-11-22 20:32:45,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1895798337] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:32:45,785 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:32:45,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 20:32:45,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267244454] [2021-11-22 20:32:45,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:32:45,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 20:32:45,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:32:45,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 20:32:45,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-22 20:32:45,787 INFO L87 Difference]: Start difference. First operand 2413 states and 3111 transitions. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:32:47,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:32:47,230 INFO L93 Difference]: Finished difference Result 6700 states and 8604 transitions. [2021-11-22 20:32:47,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-22 20:32:47,230 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 6 states have internal predecessors, (116), 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 116 [2021-11-22 20:32:47,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:32:47,241 INFO L225 Difference]: With dead ends: 6700 [2021-11-22 20:32:47,241 INFO L226 Difference]: Without dead ends: 4350 [2021-11-22 20:32:47,244 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2021-11-22 20:32:47,245 INFO L933 BasicCegarLoop]: 2929 mSDtfsCounter, 14173 mSDsluCounter, 7621 mSDsCounter, 0 mSdLazyCounter, 1267 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14173 SdHoareTripleChecker+Valid, 10550 SdHoareTripleChecker+Invalid, 1313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-22 20:32:47,245 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14173 Valid, 10550 Invalid, 1313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1267 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-22 20:32:47,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4350 states. [2021-11-22 20:32:47,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4350 to 2413. [2021-11-22 20:32:47,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2413 states, 2349 states have (on average 1.3231162196679438) internal successors, (3108), 2412 states have internal predecessors, (3108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:32:47,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2413 states to 2413 states and 3108 transitions. [2021-11-22 20:32:47,318 INFO L78 Accepts]: Start accepts. Automaton has 2413 states and 3108 transitions. Word has length 116 [2021-11-22 20:32:47,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:32:47,319 INFO L470 AbstractCegarLoop]: Abstraction has 2413 states and 3108 transitions. [2021-11-22 20:32:47,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:32:47,319 INFO L276 IsEmpty]: Start isEmpty. Operand 2413 states and 3108 transitions. [2021-11-22 20:32:47,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-22 20:32:47,320 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:32:47,320 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:32:47,359 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-22 20:32:47,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:32:47,534 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-22 20:32:47,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:32:47,535 INFO L85 PathProgramCache]: Analyzing trace with hash 584501871, now seen corresponding path program 1 times [2021-11-22 20:32:47,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:32:47,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949447588] [2021-11-22 20:32:47,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:32:47,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:32:47,589 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:32:47,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1506180251] [2021-11-22 20:32:47,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:32:47,590 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:32:47,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:32:47,591 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) [2021-11-22 20:32:47,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-22 20:32:48,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:32:48,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 2819 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-22 20:32:48,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:32:48,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:32:48,264 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:32:48,265 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:32:48,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949447588] [2021-11-22 20:32:48,265 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:32:48,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506180251] [2021-11-22 20:32:48,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1506180251] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:32:48,265 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:32:48,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 20:32:48,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047263030] [2021-11-22 20:32:48,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:32:48,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 20:32:48,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:32:48,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 20:32:48,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-22 20:32:48,267 INFO L87 Difference]: Start difference. First operand 2413 states and 3108 transitions. Second operand has 6 states, 6 states have (on average 22.0) internal successors, (132), 5 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:32:48,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:32:48,641 INFO L93 Difference]: Finished difference Result 4633 states and 5965 transitions. [2021-11-22 20:32:48,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 20:32:48,642 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.0) internal successors, (132), 5 states have internal predecessors, (132), 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 132 [2021-11-22 20:32:48,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:32:48,648 INFO L225 Difference]: With dead ends: 4633 [2021-11-22 20:32:48,649 INFO L226 Difference]: Without dead ends: 2413 [2021-11-22 20:32:48,652 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-22 20:32:48,653 INFO L933 BasicCegarLoop]: 2972 mSDtfsCounter, 10911 mSDsluCounter, 1313 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10911 SdHoareTripleChecker+Valid, 4285 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 20:32:48,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10911 Valid, 4285 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 20:32:48,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2413 states. [2021-11-22 20:32:48,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2413 to 2413. [2021-11-22 20:32:48,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2413 states, 2349 states have (on average 1.3222647935291614) internal successors, (3106), 2412 states have internal predecessors, (3106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:32:48,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2413 states to 2413 states and 3106 transitions. [2021-11-22 20:32:48,725 INFO L78 Accepts]: Start accepts. Automaton has 2413 states and 3106 transitions. Word has length 132 [2021-11-22 20:32:48,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:32:48,725 INFO L470 AbstractCegarLoop]: Abstraction has 2413 states and 3106 transitions. [2021-11-22 20:32:48,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.0) internal successors, (132), 5 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:32:48,726 INFO L276 IsEmpty]: Start isEmpty. Operand 2413 states and 3106 transitions. [2021-11-22 20:32:48,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-11-22 20:32:48,727 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:32:48,727 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:32:48,750 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-22 20:32:48,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:32:48,935 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-22 20:32:48,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:32:48,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1488405602, now seen corresponding path program 1 times [2021-11-22 20:32:48,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:32:48,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872129904] [2021-11-22 20:32:48,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:32:48,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:32:49,017 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:32:49,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1455984243] [2021-11-22 20:32:49,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:32:49,018 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:32:49,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:32:49,019 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) [2021-11-22 20:32:49,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-22 20:32:49,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:32:49,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 2850 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-22 20:32:49,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:32:49,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:32:49,691 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:32:49,691 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:32:49,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872129904] [2021-11-22 20:32:49,691 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:32:49,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455984243] [2021-11-22 20:32:49,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1455984243] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:32:49,691 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:32:49,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 20:32:49,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639160364] [2021-11-22 20:32:49,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:32:49,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 20:32:49,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:32:49,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 20:32:49,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-22 20:32:49,693 INFO L87 Difference]: Start difference. First operand 2413 states and 3106 transitions. Second operand has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:32:50,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:32:50,720 INFO L93 Difference]: Finished difference Result 5312 states and 6808 transitions. [2021-11-22 20:32:50,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-22 20:32:50,721 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 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 136 [2021-11-22 20:32:50,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:32:50,729 INFO L225 Difference]: With dead ends: 5312 [2021-11-22 20:32:50,729 INFO L226 Difference]: Without dead ends: 3060 [2021-11-22 20:32:50,732 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-22 20:32:50,733 INFO L933 BasicCegarLoop]: 3055 mSDtfsCounter, 10299 mSDsluCounter, 3629 mSDsCounter, 0 mSdLazyCounter, 817 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10299 SdHoareTripleChecker+Valid, 6684 SdHoareTripleChecker+Invalid, 849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-22 20:32:50,733 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10299 Valid, 6684 Invalid, 849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 817 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-22 20:32:50,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3060 states. [2021-11-22 20:32:50,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3060 to 2413. [2021-11-22 20:32:50,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2413 states, 2349 states have (on average 1.321413367390379) internal successors, (3104), 2412 states have internal predecessors, (3104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:32:50,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2413 states to 2413 states and 3104 transitions. [2021-11-22 20:32:50,792 INFO L78 Accepts]: Start accepts. Automaton has 2413 states and 3104 transitions. Word has length 136 [2021-11-22 20:32:50,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:32:50,792 INFO L470 AbstractCegarLoop]: Abstraction has 2413 states and 3104 transitions. [2021-11-22 20:32:50,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:32:50,793 INFO L276 IsEmpty]: Start isEmpty. Operand 2413 states and 3104 transitions. [2021-11-22 20:32:50,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-22 20:32:50,794 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:32:50,794 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:32:50,818 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-22 20:32:51,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:32:51,016 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-22 20:32:51,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:32:51,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1661426758, now seen corresponding path program 1 times [2021-11-22 20:32:51,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:32:51,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701112307] [2021-11-22 20:32:51,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:32:51,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:32:51,059 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:32:51,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [309831568] [2021-11-22 20:32:51,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:32:51,059 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:32:51,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:32:51,074 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) [2021-11-22 20:32:51,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-22 20:32:51,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:32:51,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 2965 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-22 20:32:51,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:32:51,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:32:51,799 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:32:51,800 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:32:51,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701112307] [2021-11-22 20:32:51,800 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:32:51,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [309831568] [2021-11-22 20:32:51,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [309831568] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:32:51,800 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:32:51,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 20:32:51,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157604132] [2021-11-22 20:32:51,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:32:51,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 20:32:51,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:32:51,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 20:32:51,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-22 20:32:51,801 INFO L87 Difference]: Start difference. First operand 2413 states and 3104 transitions. Second operand has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 6 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:32:52,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:32:52,336 INFO L93 Difference]: Finished difference Result 5340 states and 6847 transitions. [2021-11-22 20:32:52,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-22 20:32:52,337 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 6 states have internal predecessors, (144), 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 144 [2021-11-22 20:32:52,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:32:52,362 INFO L225 Difference]: With dead ends: 5340 [2021-11-22 20:32:52,362 INFO L226 Difference]: Without dead ends: 3119 [2021-11-22 20:32:52,365 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2021-11-22 20:32:52,365 INFO L933 BasicCegarLoop]: 2933 mSDtfsCounter, 16271 mSDsluCounter, 2451 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16271 SdHoareTripleChecker+Valid, 5384 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-22 20:32:52,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16271 Valid, 5384 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-22 20:32:52,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3119 states. [2021-11-22 20:32:52,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3119 to 2413. [2021-11-22 20:32:52,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2413 states, 2349 states have (on average 1.3205619412515963) internal successors, (3102), 2412 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:32:52,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2413 states to 2413 states and 3102 transitions. [2021-11-22 20:32:52,470 INFO L78 Accepts]: Start accepts. Automaton has 2413 states and 3102 transitions. Word has length 144 [2021-11-22 20:32:52,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:32:52,470 INFO L470 AbstractCegarLoop]: Abstraction has 2413 states and 3102 transitions. [2021-11-22 20:32:52,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 6 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:32:52,470 INFO L276 IsEmpty]: Start isEmpty. Operand 2413 states and 3102 transitions. [2021-11-22 20:32:52,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-11-22 20:32:52,471 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:32:52,472 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:32:52,499 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-22 20:32:52,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:32:52,694 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-22 20:32:52,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:32:52,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1690290133, now seen corresponding path program 1 times [2021-11-22 20:32:52,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:32:52,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055923208] [2021-11-22 20:32:52,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:32:52,694 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:32:52,748 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:32:52,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [923943133] [2021-11-22 20:32:52,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:32:52,748 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:32:52,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:32:52,772 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) [2021-11-22 20:32:52,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-22 20:32:53,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:32:53,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 3017 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 20:32:53,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:32:53,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:32:53,432 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:32:53,432 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:32:53,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055923208] [2021-11-22 20:32:53,433 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:32:53,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923943133] [2021-11-22 20:32:53,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [923943133] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:32:53,433 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:32:53,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 20:32:53,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052933369] [2021-11-22 20:32:53,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:32:53,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 20:32:53,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:32:53,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 20:32:53,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 20:32:53,435 INFO L87 Difference]: Start difference. First operand 2413 states and 3102 transitions. Second operand has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:32:53,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:32:53,665 INFO L93 Difference]: Finished difference Result 4807 states and 6181 transitions. [2021-11-22 20:32:53,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 20:32:53,666 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 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 156 [2021-11-22 20:32:53,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:32:53,671 INFO L225 Difference]: With dead ends: 4807 [2021-11-22 20:32:53,671 INFO L226 Difference]: Without dead ends: 2461 [2021-11-22 20:32:53,673 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 20:32:53,674 INFO L933 BasicCegarLoop]: 3095 mSDtfsCounter, 25 mSDsluCounter, 6072 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 9167 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 20:32:53,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 9167 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 20:32:53,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2461 states. [2021-11-22 20:32:53,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2461 to 2437. [2021-11-22 20:32:53,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2437 states, 2373 states have (on average 1.3173198482932995) internal successors, (3126), 2436 states have internal predecessors, (3126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:32:53,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2437 states to 2437 states and 3126 transitions. [2021-11-22 20:32:53,726 INFO L78 Accepts]: Start accepts. Automaton has 2437 states and 3126 transitions. Word has length 156 [2021-11-22 20:32:53,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:32:53,727 INFO L470 AbstractCegarLoop]: Abstraction has 2437 states and 3126 transitions. [2021-11-22 20:32:53,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:32:53,727 INFO L276 IsEmpty]: Start isEmpty. Operand 2437 states and 3126 transitions. [2021-11-22 20:32:53,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-11-22 20:32:53,728 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:32:53,728 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:32:53,771 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-22 20:32:53,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:32:53,949 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-22 20:32:53,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:32:53,950 INFO L85 PathProgramCache]: Analyzing trace with hash -2084656919, now seen corresponding path program 1 times [2021-11-22 20:32:53,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:32:53,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307488441] [2021-11-22 20:32:53,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:32:53,950 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:32:54,004 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:32:54,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1849210068] [2021-11-22 20:32:54,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:32:54,004 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:32:54,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:32:54,005 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) [2021-11-22 20:32:54,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-22 20:32:54,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:32:54,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 3012 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-22 20:32:54,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:32:54,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:32:54,799 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:32:54,799 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:32:54,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307488441] [2021-11-22 20:32:54,799 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:32:54,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1849210068] [2021-11-22 20:32:54,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1849210068] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:32:54,800 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:32:54,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-22 20:32:54,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819591967] [2021-11-22 20:32:54,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:32:54,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 20:32:54,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:32:54,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 20:32:54,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-22 20:32:54,801 INFO L87 Difference]: Start difference. First operand 2437 states and 3126 transitions. Second operand has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 7 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:32:55,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:32:55,974 INFO L93 Difference]: Finished difference Result 6650 states and 8465 transitions. [2021-11-22 20:32:55,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-22 20:32:55,974 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 7 states have internal predecessors, (156), 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 156 [2021-11-22 20:32:55,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:32:55,989 INFO L225 Difference]: With dead ends: 6650 [2021-11-22 20:32:55,990 INFO L226 Difference]: Without dead ends: 4393 [2021-11-22 20:32:55,993 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2021-11-22 20:32:55,994 INFO L933 BasicCegarLoop]: 3016 mSDtfsCounter, 16421 mSDsluCounter, 5417 mSDsCounter, 0 mSdLazyCounter, 918 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16421 SdHoareTripleChecker+Valid, 8433 SdHoareTripleChecker+Invalid, 987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 918 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-22 20:32:55,995 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16421 Valid, 8433 Invalid, 987 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 918 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-22 20:32:55,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4393 states. [2021-11-22 20:32:56,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4393 to 2437. [2021-11-22 20:32:56,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2437 states, 2373 states have (on average 1.3164770332911926) internal successors, (3124), 2436 states have internal predecessors, (3124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:32:56,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2437 states to 2437 states and 3124 transitions. [2021-11-22 20:32:56,070 INFO L78 Accepts]: Start accepts. Automaton has 2437 states and 3124 transitions. Word has length 156 [2021-11-22 20:32:56,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:32:56,070 INFO L470 AbstractCegarLoop]: Abstraction has 2437 states and 3124 transitions. [2021-11-22 20:32:56,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 7 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:32:56,071 INFO L276 IsEmpty]: Start isEmpty. Operand 2437 states and 3124 transitions. [2021-11-22 20:32:56,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-11-22 20:32:56,072 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:32:56,072 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:32:56,096 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-22 20:32:56,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:32:56,284 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-22 20:32:56,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:32:56,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1933015475, now seen corresponding path program 1 times [2021-11-22 20:32:56,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:32:56,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430859239] [2021-11-22 20:32:56,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:32:56,284 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:32:56,349 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:32:56,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [546841910] [2021-11-22 20:32:56,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:32:56,349 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:32:56,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:32:56,372 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) [2021-11-22 20:32:56,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-22 20:32:56,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:32:56,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 3127 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-22 20:32:56,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:32:57,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:32:57,280 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:32:57,281 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:32:57,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430859239] [2021-11-22 20:32:57,281 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:32:57,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546841910] [2021-11-22 20:32:57,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [546841910] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:32:57,281 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:32:57,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 20:32:57,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147861323] [2021-11-22 20:32:57,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:32:57,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 20:32:57,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:32:57,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 20:32:57,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-22 20:32:57,283 INFO L87 Difference]: Start difference. First operand 2437 states and 3124 transitions. Second operand has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 6 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:32:58,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:32:58,326 INFO L93 Difference]: Finished difference Result 4655 states and 5969 transitions. [2021-11-22 20:32:58,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 20:32:58,327 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 6 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 164 [2021-11-22 20:32:58,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:32:58,330 INFO L225 Difference]: With dead ends: 4655 [2021-11-22 20:32:58,330 INFO L226 Difference]: Without dead ends: 2437 [2021-11-22 20:32:58,332 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-11-22 20:32:58,334 INFO L933 BasicCegarLoop]: 2943 mSDtfsCounter, 12020 mSDsluCounter, 2524 mSDsCounter, 0 mSdLazyCounter, 949 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12020 SdHoareTripleChecker+Valid, 5467 SdHoareTripleChecker+Invalid, 953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 949 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-22 20:32:58,334 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12020 Valid, 5467 Invalid, 953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 949 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-22 20:32:58,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2437 states. [2021-11-22 20:32:58,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2437 to 2437. [2021-11-22 20:32:58,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2437 states, 2373 states have (on average 1.315212810788032) internal successors, (3121), 2436 states have internal predecessors, (3121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:32:58,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2437 states to 2437 states and 3121 transitions. [2021-11-22 20:32:58,412 INFO L78 Accepts]: Start accepts. Automaton has 2437 states and 3121 transitions. Word has length 164 [2021-11-22 20:32:58,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:32:58,413 INFO L470 AbstractCegarLoop]: Abstraction has 2437 states and 3121 transitions. [2021-11-22 20:32:58,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 6 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:32:58,413 INFO L276 IsEmpty]: Start isEmpty. Operand 2437 states and 3121 transitions. [2021-11-22 20:32:58,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-11-22 20:32:58,414 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:32:58,414 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:32:58,437 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-22 20:32:58,627 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,SelfDestructingSolverStorable10 [2021-11-22 20:32:58,628 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-22 20:32:58,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:32:58,628 INFO L85 PathProgramCache]: Analyzing trace with hash -977522511, now seen corresponding path program 1 times [2021-11-22 20:32:58,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:32:58,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168250004] [2021-11-22 20:32:58,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:32:58,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:32:58,696 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:32:58,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [480097220] [2021-11-22 20:32:58,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:32:58,696 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:32:58,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:32:58,711 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) [2021-11-22 20:32:58,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-22 20:32:59,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:32:59,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 3242 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-22 20:32:59,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:32:59,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:32:59,544 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:32:59,544 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:32:59,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168250004] [2021-11-22 20:32:59,544 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:32:59,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480097220] [2021-11-22 20:32:59,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [480097220] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:32:59,544 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:32:59,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-22 20:32:59,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124072844] [2021-11-22 20:32:59,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:32:59,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-22 20:32:59,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:32:59,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-22 20:32:59,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-22 20:32:59,546 INFO L87 Difference]: Start difference. First operand 2437 states and 3121 transitions. Second operand has 9 states, 9 states have (on average 19.11111111111111) internal successors, (172), 8 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:33:00,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:33:00,754 INFO L93 Difference]: Finished difference Result 5043 states and 6469 transitions. [2021-11-22 20:33:00,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-22 20:33:00,755 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 19.11111111111111) internal successors, (172), 8 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 172 [2021-11-22 20:33:00,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:33:00,759 INFO L225 Difference]: With dead ends: 5043 [2021-11-22 20:33:00,760 INFO L226 Difference]: Without dead ends: 2849 [2021-11-22 20:33:00,763 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2021-11-22 20:33:00,764 INFO L933 BasicCegarLoop]: 2874 mSDtfsCounter, 19321 mSDsluCounter, 4433 mSDsCounter, 0 mSdLazyCounter, 1091 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19321 SdHoareTripleChecker+Valid, 7307 SdHoareTripleChecker+Invalid, 1194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 1091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-22 20:33:00,764 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19321 Valid, 7307 Invalid, 1194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 1091 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-22 20:33:00,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2849 states. [2021-11-22 20:33:00,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2849 to 2437. [2021-11-22 20:33:00,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2437 states, 2373 states have (on average 1.3114201432785504) internal successors, (3112), 2436 states have internal predecessors, (3112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:33:00,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2437 states to 2437 states and 3112 transitions. [2021-11-22 20:33:00,826 INFO L78 Accepts]: Start accepts. Automaton has 2437 states and 3112 transitions. Word has length 172 [2021-11-22 20:33:00,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:33:00,826 INFO L470 AbstractCegarLoop]: Abstraction has 2437 states and 3112 transitions. [2021-11-22 20:33:00,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 19.11111111111111) internal successors, (172), 8 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:33:00,827 INFO L276 IsEmpty]: Start isEmpty. Operand 2437 states and 3112 transitions. [2021-11-22 20:33:00,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-11-22 20:33:00,828 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:33:00,828 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:33:00,850 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-22 20:33:01,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:33:01,050 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-22 20:33:01,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:33:01,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1683999865, now seen corresponding path program 1 times [2021-11-22 20:33:01,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:33:01,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380593385] [2021-11-22 20:33:01,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:33:01,051 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:33:01,102 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:33:01,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [824542118] [2021-11-22 20:33:01,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:33:01,103 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:33:01,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:33:01,104 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) [2021-11-22 20:33:01,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-22 20:33:01,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:33:01,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 3472 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-22 20:33:01,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:33:01,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:33:01,944 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:33:01,945 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:33:01,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380593385] [2021-11-22 20:33:01,945 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:33:01,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824542118] [2021-11-22 20:33:01,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [824542118] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:33:01,945 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:33:01,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 20:33:01,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882713828] [2021-11-22 20:33:01,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:33:01,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 20:33:01,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:33:01,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 20:33:01,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-22 20:33:01,947 INFO L87 Difference]: Start difference. First operand 2437 states and 3112 transitions. Second operand has 6 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:33:06,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:33:06,041 INFO L93 Difference]: Finished difference Result 6866 states and 8752 transitions. [2021-11-22 20:33:06,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-22 20:33:06,042 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 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 188 [2021-11-22 20:33:06,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:33:06,049 INFO L225 Difference]: With dead ends: 6866 [2021-11-22 20:33:06,049 INFO L226 Difference]: Without dead ends: 4500 [2021-11-22 20:33:06,053 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-22 20:33:06,053 INFO L933 BasicCegarLoop]: 4934 mSDtfsCounter, 2524 mSDsluCounter, 15755 mSDsCounter, 0 mSdLazyCounter, 4557 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2524 SdHoareTripleChecker+Valid, 20689 SdHoareTripleChecker+Invalid, 4648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 4557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-11-22 20:33:06,054 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2524 Valid, 20689 Invalid, 4648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 4557 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2021-11-22 20:33:06,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4500 states. [2021-11-22 20:33:06,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4500 to 2461. [2021-11-22 20:33:06,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2461 states, 2397 states have (on average 1.3083020442219442) internal successors, (3136), 2460 states have internal predecessors, (3136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:33:06,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2461 states to 2461 states and 3136 transitions. [2021-11-22 20:33:06,131 INFO L78 Accepts]: Start accepts. Automaton has 2461 states and 3136 transitions. Word has length 188 [2021-11-22 20:33:06,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:33:06,131 INFO L470 AbstractCegarLoop]: Abstraction has 2461 states and 3136 transitions. [2021-11-22 20:33:06,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:33:06,132 INFO L276 IsEmpty]: Start isEmpty. Operand 2461 states and 3136 transitions. [2021-11-22 20:33:06,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-11-22 20:33:06,133 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:33:06,133 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:33:06,168 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-22 20:33:06,347 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,SelfDestructingSolverStorable12 [2021-11-22 20:33:06,348 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-22 20:33:06,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:33:06,348 INFO L85 PathProgramCache]: Analyzing trace with hash -222403401, now seen corresponding path program 1 times [2021-11-22 20:33:06,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:33:06,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115821629] [2021-11-22 20:33:06,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:33:06,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:33:06,405 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:33:06,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1086210282] [2021-11-22 20:33:06,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:33:06,405 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:33:06,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:33:06,420 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) [2021-11-22 20:33:06,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-22 20:33:07,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:33:07,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 3469 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 20:33:07,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:33:07,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:33:07,285 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:33:07,285 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:33:07,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115821629] [2021-11-22 20:33:07,286 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:33:07,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086210282] [2021-11-22 20:33:07,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1086210282] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:33:07,286 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:33:07,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 20:33:07,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726002418] [2021-11-22 20:33:07,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:33:07,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 20:33:07,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:33:07,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 20:33:07,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 20:33:07,288 INFO L87 Difference]: Start difference. First operand 2461 states and 3136 transitions. Second operand has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:33:07,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:33:07,509 INFO L93 Difference]: Finished difference Result 4895 states and 6239 transitions. [2021-11-22 20:33:07,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 20:33:07,509 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 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 188 [2021-11-22 20:33:07,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:33:07,514 INFO L225 Difference]: With dead ends: 4895 [2021-11-22 20:33:07,514 INFO L226 Difference]: Without dead ends: 2509 [2021-11-22 20:33:07,517 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 20:33:07,520 INFO L933 BasicCegarLoop]: 3067 mSDtfsCounter, 31 mSDsluCounter, 6044 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 9111 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 20:33:07,520 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 9111 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 20:33:07,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2509 states. [2021-11-22 20:33:07,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2509 to 2485. [2021-11-22 20:33:07,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2485 states, 2421 states have (on average 1.305245766212309) internal successors, (3160), 2484 states have internal predecessors, (3160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:33:07,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2485 states to 2485 states and 3160 transitions. [2021-11-22 20:33:07,591 INFO L78 Accepts]: Start accepts. Automaton has 2485 states and 3160 transitions. Word has length 188 [2021-11-22 20:33:07,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:33:07,592 INFO L470 AbstractCegarLoop]: Abstraction has 2485 states and 3160 transitions. [2021-11-22 20:33:07,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:33:07,592 INFO L276 IsEmpty]: Start isEmpty. Operand 2485 states and 3160 transitions. [2021-11-22 20:33:07,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-11-22 20:33:07,593 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:33:07,593 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:33:07,627 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-22 20:33:07,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-22 20:33:07,828 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-22 20:33:07,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:33:07,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1279134603, now seen corresponding path program 1 times [2021-11-22 20:33:07,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:33:07,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127127992] [2021-11-22 20:33:07,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:33:07,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:33:07,892 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:33:07,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1745507511] [2021-11-22 20:33:07,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:33:07,893 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:33:07,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:33:07,908 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) [2021-11-22 20:33:07,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-22 20:33:08,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:33:08,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 3464 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-22 20:33:08,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:33:08,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:33:08,903 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:33:08,904 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:33:08,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127127992] [2021-11-22 20:33:08,904 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:33:08,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745507511] [2021-11-22 20:33:08,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1745507511] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:33:08,904 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:33:08,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 20:33:08,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723858746] [2021-11-22 20:33:08,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:33:08,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 20:33:08,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:33:08,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 20:33:08,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-22 20:33:08,906 INFO L87 Difference]: Start difference. First operand 2485 states and 3160 transitions. Second operand has 6 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:33:09,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:33:09,129 INFO L93 Difference]: Finished difference Result 7205 states and 9168 transitions. [2021-11-22 20:33:09,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 20:33:09,130 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 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 188 [2021-11-22 20:33:09,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:33:09,136 INFO L225 Difference]: With dead ends: 7205 [2021-11-22 20:33:09,137 INFO L226 Difference]: Without dead ends: 4876 [2021-11-22 20:33:09,139 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-22 20:33:09,140 INFO L933 BasicCegarLoop]: 3080 mSDtfsCounter, 5913 mSDsluCounter, 12322 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5913 SdHoareTripleChecker+Valid, 15402 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 20:33:09,140 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5913 Valid, 15402 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 20:33:09,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4876 states. [2021-11-22 20:33:09,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4876 to 2544. [2021-11-22 20:33:09,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2544 states, 2480 states have (on average 1.304032258064516) internal successors, (3234), 2543 states have internal predecessors, (3234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:33:09,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2544 states to 2544 states and 3234 transitions. [2021-11-22 20:33:09,222 INFO L78 Accepts]: Start accepts. Automaton has 2544 states and 3234 transitions. Word has length 188 [2021-11-22 20:33:09,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:33:09,222 INFO L470 AbstractCegarLoop]: Abstraction has 2544 states and 3234 transitions. [2021-11-22 20:33:09,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:33:09,223 INFO L276 IsEmpty]: Start isEmpty. Operand 2544 states and 3234 transitions. [2021-11-22 20:33:09,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-11-22 20:33:09,224 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:33:09,224 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:33:09,246 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-22 20:33:09,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-22 20:33:09,443 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-22 20:33:09,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:33:09,444 INFO L85 PathProgramCache]: Analyzing trace with hash 2021138995, now seen corresponding path program 1 times [2021-11-22 20:33:09,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:33:09,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411794906] [2021-11-22 20:33:09,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:33:09,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:33:09,493 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:33:09,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1184462634] [2021-11-22 20:33:09,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:33:09,494 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:33:09,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:33:09,495 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) [2021-11-22 20:33:09,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-22 20:33:10,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:33:10,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 3461 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-22 20:33:10,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:33:10,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:33:10,515 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:33:10,515 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:33:10,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411794906] [2021-11-22 20:33:10,515 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:33:10,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1184462634] [2021-11-22 20:33:10,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1184462634] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:33:10,515 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:33:10,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 20:33:10,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200744191] [2021-11-22 20:33:10,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:33:10,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 20:33:10,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:33:10,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 20:33:10,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-22 20:33:10,517 INFO L87 Difference]: Start difference. First operand 2544 states and 3234 transitions. Second operand has 6 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:33:10,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:33:10,717 INFO L93 Difference]: Finished difference Result 7146 states and 9092 transitions. [2021-11-22 20:33:10,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 20:33:10,718 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 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 188 [2021-11-22 20:33:10,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:33:10,724 INFO L225 Difference]: With dead ends: 7146 [2021-11-22 20:33:10,724 INFO L226 Difference]: Without dead ends: 4876 [2021-11-22 20:33:10,727 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-22 20:33:10,728 INFO L933 BasicCegarLoop]: 3080 mSDtfsCounter, 5775 mSDsluCounter, 12322 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5775 SdHoareTripleChecker+Valid, 15402 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 20:33:10,728 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5775 Valid, 15402 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 20:33:10,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4876 states. [2021-11-22 20:33:10,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4876 to 2603. [2021-11-22 20:33:10,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2603 states, 2539 states have (on average 1.3028751476959433) internal successors, (3308), 2602 states have internal predecessors, (3308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:33:10,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2603 states to 2603 states and 3308 transitions. [2021-11-22 20:33:10,812 INFO L78 Accepts]: Start accepts. Automaton has 2603 states and 3308 transitions. Word has length 188 [2021-11-22 20:33:10,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:33:10,812 INFO L470 AbstractCegarLoop]: Abstraction has 2603 states and 3308 transitions. [2021-11-22 20:33:10,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:33:10,812 INFO L276 IsEmpty]: Start isEmpty. Operand 2603 states and 3308 transitions. [2021-11-22 20:33:10,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-11-22 20:33:10,813 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:33:10,813 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:33:10,837 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-22 20:33:11,033 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,SelfDestructingSolverStorable15 [2021-11-22 20:33:11,033 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-22 20:33:11,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:33:11,034 INFO L85 PathProgramCache]: Analyzing trace with hash -334666255, now seen corresponding path program 1 times [2021-11-22 20:33:11,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:33:11,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170937830] [2021-11-22 20:33:11,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:33:11,034 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:33:11,090 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:33:11,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1643196244] [2021-11-22 20:33:11,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:33:11,091 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:33:11,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:33:11,092 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) [2021-11-22 20:33:11,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-22 20:33:11,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:33:11,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 3458 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-22 20:33:11,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:33:11,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:33:11,999 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:33:11,999 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:33:11,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170937830] [2021-11-22 20:33:11,999 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:33:12,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643196244] [2021-11-22 20:33:12,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1643196244] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:33:12,000 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:33:12,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 20:33:12,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238764280] [2021-11-22 20:33:12,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:33:12,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 20:33:12,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:33:12,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 20:33:12,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-22 20:33:12,001 INFO L87 Difference]: Start difference. First operand 2603 states and 3308 transitions. Second operand has 6 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:33:12,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:33:12,263 INFO L93 Difference]: Finished difference Result 7126 states and 9066 transitions. [2021-11-22 20:33:12,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 20:33:12,264 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 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 188 [2021-11-22 20:33:12,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:33:12,269 INFO L225 Difference]: With dead ends: 7126 [2021-11-22 20:33:12,269 INFO L226 Difference]: Without dead ends: 4876 [2021-11-22 20:33:12,271 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-22 20:33:12,272 INFO L933 BasicCegarLoop]: 3080 mSDtfsCounter, 5663 mSDsluCounter, 12322 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5663 SdHoareTripleChecker+Valid, 15402 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 20:33:12,272 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5663 Valid, 15402 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 20:33:12,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4876 states. [2021-11-22 20:33:12,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4876 to 2623. [2021-11-22 20:33:12,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2623 states, 2559 states have (on average 1.3020711215318483) internal successors, (3332), 2622 states have internal predecessors, (3332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:33:12,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2623 states to 2623 states and 3332 transitions. [2021-11-22 20:33:12,369 INFO L78 Accepts]: Start accepts. Automaton has 2623 states and 3332 transitions. Word has length 188 [2021-11-22 20:33:12,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:33:12,370 INFO L470 AbstractCegarLoop]: Abstraction has 2623 states and 3332 transitions. [2021-11-22 20:33:12,370 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:33:12,370 INFO L276 IsEmpty]: Start isEmpty. Operand 2623 states and 3332 transitions. [2021-11-22 20:33:12,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-11-22 20:33:12,371 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:33:12,371 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:33:12,395 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-22 20:33:12,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:33:12,586 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-22 20:33:12,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:33:12,586 INFO L85 PathProgramCache]: Analyzing trace with hash -59906641, now seen corresponding path program 1 times [2021-11-22 20:33:12,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:33:12,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627732919] [2021-11-22 20:33:12,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:33:12,587 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:33:12,632 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:33:12,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1273086275] [2021-11-22 20:33:12,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:33:12,632 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:33:12,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:33:12,633 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) [2021-11-22 20:33:12,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-22 20:33:13,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:33:13,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 3455 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-22 20:33:13,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:33:13,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:33:13,494 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:33:13,494 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:33:13,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627732919] [2021-11-22 20:33:13,494 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:33:13,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273086275] [2021-11-22 20:33:13,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1273086275] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:33:13,494 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:33:13,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 20:33:13,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255796046] [2021-11-22 20:33:13,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:33:13,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 20:33:13,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:33:13,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 20:33:13,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 20:33:13,495 INFO L87 Difference]: Start difference. First operand 2623 states and 3332 transitions. Second operand has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:33:13,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:33:13,776 INFO L93 Difference]: Finished difference Result 4952 states and 6295 transitions. [2021-11-22 20:33:13,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 20:33:13,777 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 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 188 [2021-11-22 20:33:13,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:33:13,779 INFO L225 Difference]: With dead ends: 4952 [2021-11-22 20:33:13,779 INFO L226 Difference]: Without dead ends: 2564 [2021-11-22 20:33:13,782 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 20:33:13,782 INFO L933 BasicCegarLoop]: 3087 mSDtfsCounter, 1 mSDsluCounter, 5942 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 9029 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 20:33:13,782 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 9029 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 20:33:13,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2564 states. [2021-11-22 20:33:13,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2564 to 2564. [2021-11-22 20:33:13,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2564 states, 2500 states have (on average 1.3028) internal successors, (3257), 2563 states have internal predecessors, (3257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:33:13,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2564 states to 2564 states and 3257 transitions. [2021-11-22 20:33:13,869 INFO L78 Accepts]: Start accepts. Automaton has 2564 states and 3257 transitions. Word has length 188 [2021-11-22 20:33:13,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:33:13,869 INFO L470 AbstractCegarLoop]: Abstraction has 2564 states and 3257 transitions. [2021-11-22 20:33:13,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:33:13,870 INFO L276 IsEmpty]: Start isEmpty. Operand 2564 states and 3257 transitions. [2021-11-22 20:33:13,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-11-22 20:33:13,871 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:33:13,871 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:33:13,896 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-22 20:33:14,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-22 20:33:14,088 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-22 20:33:14,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:33:14,088 INFO L85 PathProgramCache]: Analyzing trace with hash -694362953, now seen corresponding path program 1 times [2021-11-22 20:33:14,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:33:14,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253196666] [2021-11-22 20:33:14,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:33:14,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:33:14,138 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:33:14,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1412512368] [2021-11-22 20:33:14,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:33:14,138 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:33:14,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:33:14,140 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 20:33:14,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-22 20:33:14,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:33:14,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 3467 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-22 20:33:14,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:33:15,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:33:15,067 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:33:15,067 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:33:15,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253196666] [2021-11-22 20:33:15,068 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:33:15,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412512368] [2021-11-22 20:33:15,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412512368] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:33:15,068 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:33:15,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 20:33:15,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85113381] [2021-11-22 20:33:15,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:33:15,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 20:33:15,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:33:15,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 20:33:15,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 20:33:15,070 INFO L87 Difference]: Start difference. First operand 2564 states and 3257 transitions. Second operand has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:33:15,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:33:15,383 INFO L93 Difference]: Finished difference Result 7036 states and 8949 transitions. [2021-11-22 20:33:15,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 20:33:15,384 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 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 188 [2021-11-22 20:33:15,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:33:15,388 INFO L225 Difference]: With dead ends: 7036 [2021-11-22 20:33:15,388 INFO L226 Difference]: Without dead ends: 4566 [2021-11-22 20:33:15,391 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-22 20:33:15,391 INFO L933 BasicCegarLoop]: 5464 mSDtfsCounter, 2493 mSDsluCounter, 13985 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2493 SdHoareTripleChecker+Valid, 19449 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 20:33:15,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2493 Valid, 19449 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 20:33:15,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4566 states. [2021-11-22 20:33:15,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4566 to 2564. [2021-11-22 20:33:15,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2564 states, 2500 states have (on average 1.3024) internal successors, (3256), 2563 states have internal predecessors, (3256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:33:15,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2564 states to 2564 states and 3256 transitions. [2021-11-22 20:33:15,492 INFO L78 Accepts]: Start accepts. Automaton has 2564 states and 3256 transitions. Word has length 188 [2021-11-22 20:33:15,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:33:15,492 INFO L470 AbstractCegarLoop]: Abstraction has 2564 states and 3256 transitions. [2021-11-22 20:33:15,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:33:15,492 INFO L276 IsEmpty]: Start isEmpty. Operand 2564 states and 3256 transitions. [2021-11-22 20:33:15,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-11-22 20:33:15,493 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:33:15,493 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:33:15,531 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2021-11-22 20:33:15,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:33:15,708 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-22 20:33:15,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:33:15,708 INFO L85 PathProgramCache]: Analyzing trace with hash -606250993, now seen corresponding path program 1 times [2021-11-22 20:33:15,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:33:15,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586080019] [2021-11-22 20:33:15,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:33:15,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:33:15,759 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:33:15,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2093593733] [2021-11-22 20:33:15,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:33:15,760 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:33:15,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:33:15,776 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 20:33:15,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-22 20:33:16,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:33:16,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 3493 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-22 20:33:16,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:33:16,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:33:16,676 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:33:16,677 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:33:16,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586080019] [2021-11-22 20:33:16,677 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:33:16,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093593733] [2021-11-22 20:33:16,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2093593733] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:33:16,677 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:33:16,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 20:33:16,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254229717] [2021-11-22 20:33:16,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:33:16,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 20:33:16,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:33:16,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 20:33:16,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 20:33:16,679 INFO L87 Difference]: Start difference. First operand 2564 states and 3256 transitions. Second operand has 5 states, 5 states have (on average 38.2) internal successors, (191), 5 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:33:17,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:33:17,059 INFO L93 Difference]: Finished difference Result 7221 states and 9148 transitions. [2021-11-22 20:33:17,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 20:33:17,060 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 38.2) internal successors, (191), 5 states have internal predecessors, (191), 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 191 [2021-11-22 20:33:17,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:33:17,065 INFO L225 Difference]: With dead ends: 7221 [2021-11-22 20:33:17,065 INFO L226 Difference]: Without dead ends: 4741 [2021-11-22 20:33:17,068 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-22 20:33:17,068 INFO L933 BasicCegarLoop]: 5674 mSDtfsCounter, 2794 mSDsluCounter, 14102 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2794 SdHoareTripleChecker+Valid, 19776 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 20:33:17,068 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2794 Valid, 19776 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 20:33:17,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4741 states. [2021-11-22 20:33:17,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4741 to 2616. [2021-11-22 20:33:17,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2616 states, 2552 states have (on average 1.2962382445141065) internal successors, (3308), 2615 states have internal predecessors, (3308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:33:17,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2616 states to 2616 states and 3308 transitions. [2021-11-22 20:33:17,177 INFO L78 Accepts]: Start accepts. Automaton has 2616 states and 3308 transitions. Word has length 191 [2021-11-22 20:33:17,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:33:17,177 INFO L470 AbstractCegarLoop]: Abstraction has 2616 states and 3308 transitions. [2021-11-22 20:33:17,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.2) internal successors, (191), 5 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:33:17,177 INFO L276 IsEmpty]: Start isEmpty. Operand 2616 states and 3308 transitions. [2021-11-22 20:33:17,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-11-22 20:33:17,178 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:33:17,178 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:33:17,201 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-22 20:33:17,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:33:17,384 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-22 20:33:17,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:33:17,384 INFO L85 PathProgramCache]: Analyzing trace with hash -620535023, now seen corresponding path program 1 times [2021-11-22 20:33:17,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:33:17,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324897234] [2021-11-22 20:33:17,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:33:17,384 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:33:17,479 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:33:17,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1245937834] [2021-11-22 20:33:17,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:33:17,480 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:33:17,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:33:17,481 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 20:33:17,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-22 20:33:18,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:33:18,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 3490 conjuncts, 39 conjunts are in the unsatisfiable core [2021-11-22 20:33:18,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:33:18,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:33:18,594 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:33:18,594 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:33:18,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324897234] [2021-11-22 20:33:18,594 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:33:18,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245937834] [2021-11-22 20:33:18,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1245937834] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:33:18,594 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:33:18,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-22 20:33:18,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314362863] [2021-11-22 20:33:18,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:33:18,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-22 20:33:18,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:33:18,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-22 20:33:18,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-22 20:33:18,595 INFO L87 Difference]: Start difference. First operand 2616 states and 3308 transitions. Second operand has 10 states, 10 states have (on average 19.1) internal successors, (191), 10 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:33:20,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:33:20,733 INFO L93 Difference]: Finished difference Result 7275 states and 9162 transitions. [2021-11-22 20:33:20,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-22 20:33:20,733 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 19.1) internal successors, (191), 10 states have internal predecessors, (191), 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 191 [2021-11-22 20:33:20,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:33:20,738 INFO L225 Difference]: With dead ends: 7275 [2021-11-22 20:33:20,738 INFO L226 Difference]: Without dead ends: 4736 [2021-11-22 20:33:20,741 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=206, Invalid=550, Unknown=0, NotChecked=0, Total=756 [2021-11-22 20:33:20,743 INFO L933 BasicCegarLoop]: 4729 mSDtfsCounter, 7310 mSDsluCounter, 19141 mSDsCounter, 0 mSdLazyCounter, 2105 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7310 SdHoareTripleChecker+Valid, 23870 SdHoareTripleChecker+Invalid, 2234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 2105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-22 20:33:20,743 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7310 Valid, 23870 Invalid, 2234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 2105 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-22 20:33:20,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4736 states. [2021-11-22 20:33:20,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4736 to 2637. [2021-11-22 20:33:20,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2637 states, 2573 states have (on average 1.2973183054799844) internal successors, (3338), 2636 states have internal predecessors, (3338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:33:20,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2637 states to 2637 states and 3338 transitions. [2021-11-22 20:33:20,875 INFO L78 Accepts]: Start accepts. Automaton has 2637 states and 3338 transitions. Word has length 191 [2021-11-22 20:33:20,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:33:20,875 INFO L470 AbstractCegarLoop]: Abstraction has 2637 states and 3338 transitions. [2021-11-22 20:33:20,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 19.1) internal successors, (191), 10 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:33:20,876 INFO L276 IsEmpty]: Start isEmpty. Operand 2637 states and 3338 transitions. [2021-11-22 20:33:20,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-11-22 20:33:20,879 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:33:20,880 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:33:20,927 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-22 20:33:21,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:33:21,104 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-22 20:33:21,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:33:21,104 INFO L85 PathProgramCache]: Analyzing trace with hash 921302737, now seen corresponding path program 1 times [2021-11-22 20:33:21,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:33:21,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808533456] [2021-11-22 20:33:21,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:33:21,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:33:21,208 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:33:21,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [35273889] [2021-11-22 20:33:21,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:33:21,208 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:33:21,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:33:21,209 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 20:33:21,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-22 20:33:21,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:33:21,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 3480 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 20:33:21,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:33:22,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:33:22,171 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:33:22,171 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:33:22,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808533456] [2021-11-22 20:33:22,171 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:33:22,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35273889] [2021-11-22 20:33:22,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [35273889] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:33:22,171 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:33:22,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 20:33:22,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436512266] [2021-11-22 20:33:22,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:33:22,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 20:33:22,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:33:22,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 20:33:22,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 20:33:22,173 INFO L87 Difference]: Start difference. First operand 2637 states and 3338 transitions. Second operand has 4 states, 4 states have (on average 47.75) internal successors, (191), 4 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:33:23,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:33:23,672 INFO L93 Difference]: Finished difference Result 5707 states and 7291 transitions. [2021-11-22 20:33:23,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 20:33:23,673 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.75) internal successors, (191), 4 states have internal predecessors, (191), 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 191 [2021-11-22 20:33:23,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:33:23,677 INFO L225 Difference]: With dead ends: 5707 [2021-11-22 20:33:23,677 INFO L226 Difference]: Without dead ends: 3117 [2021-11-22 20:33:23,680 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 20:33:23,681 INFO L933 BasicCegarLoop]: 3405 mSDtfsCounter, 711 mSDsluCounter, 4828 mSDsCounter, 0 mSdLazyCounter, 1427 mSolverCounterSat, 381 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 711 SdHoareTripleChecker+Valid, 8233 SdHoareTripleChecker+Invalid, 1808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 381 IncrementalHoareTripleChecker+Valid, 1427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-22 20:33:23,682 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [711 Valid, 8233 Invalid, 1808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [381 Valid, 1427 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-22 20:33:23,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3117 states. [2021-11-22 20:33:23,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3117 to 2829. [2021-11-22 20:33:23,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2829 states, 2765 states have (on average 1.2755877034358047) internal successors, (3527), 2828 states have internal predecessors, (3527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:33:23,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2829 states to 2829 states and 3527 transitions. [2021-11-22 20:33:23,829 INFO L78 Accepts]: Start accepts. Automaton has 2829 states and 3527 transitions. Word has length 191 [2021-11-22 20:33:23,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:33:23,830 INFO L470 AbstractCegarLoop]: Abstraction has 2829 states and 3527 transitions. [2021-11-22 20:33:23,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.75) internal successors, (191), 4 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:33:23,830 INFO L276 IsEmpty]: Start isEmpty. Operand 2829 states and 3527 transitions. [2021-11-22 20:33:23,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-11-22 20:33:23,831 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:33:23,831 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:33:23,854 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-22 20:33:24,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:33:24,054 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-22 20:33:24,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:33:24,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1850409137, now seen corresponding path program 1 times [2021-11-22 20:33:24,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:33:24,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869626141] [2021-11-22 20:33:24,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:33:24,054 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:33:24,148 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:33:24,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [967766408] [2021-11-22 20:33:24,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:33:24,149 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:33:24,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:33:24,164 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 20:33:24,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-22 20:33:24,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:33:24,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 3490 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-22 20:33:24,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:33:25,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:33:25,159 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:33:25,159 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:33:25,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869626141] [2021-11-22 20:33:25,159 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:33:25,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [967766408] [2021-11-22 20:33:25,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [967766408] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:33:25,159 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:33:25,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 20:33:25,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857350911] [2021-11-22 20:33:25,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:33:25,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 20:33:25,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:33:25,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 20:33:25,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 20:33:25,160 INFO L87 Difference]: Start difference. First operand 2829 states and 3527 transitions. Second operand has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:33:29,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:33:29,140 INFO L93 Difference]: Finished difference Result 7150 states and 8835 transitions. [2021-11-22 20:33:29,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 20:33:29,141 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 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 195 [2021-11-22 20:33:29,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:33:29,146 INFO L225 Difference]: With dead ends: 7150 [2021-11-22 20:33:29,146 INFO L226 Difference]: Without dead ends: 4369 [2021-11-22 20:33:29,150 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 20:33:29,153 INFO L933 BasicCegarLoop]: 4088 mSDtfsCounter, 1885 mSDsluCounter, 8373 mSDsCounter, 0 mSdLazyCounter, 4424 mSolverCounterSat, 668 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1885 SdHoareTripleChecker+Valid, 12461 SdHoareTripleChecker+Invalid, 5092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 668 IncrementalHoareTripleChecker+Valid, 4424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-11-22 20:33:29,154 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1885 Valid, 12461 Invalid, 5092 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [668 Valid, 4424 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2021-11-22 20:33:29,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4369 states. [2021-11-22 20:33:29,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4369 to 2925. [2021-11-22 20:33:29,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2925 states, 2861 states have (on average 1.2652918559944075) internal successors, (3620), 2924 states have internal predecessors, (3620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:33:29,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2925 states to 2925 states and 3620 transitions. [2021-11-22 20:33:29,269 INFO L78 Accepts]: Start accepts. Automaton has 2925 states and 3620 transitions. Word has length 195 [2021-11-22 20:33:29,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:33:29,270 INFO L470 AbstractCegarLoop]: Abstraction has 2925 states and 3620 transitions. [2021-11-22 20:33:29,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:33:29,270 INFO L276 IsEmpty]: Start isEmpty. Operand 2925 states and 3620 transitions. [2021-11-22 20:33:29,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-11-22 20:33:29,271 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:33:29,271 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:33:29,304 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-22 20:33:29,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-11-22 20:33:29,504 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-22 20:33:29,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:33:29,505 INFO L85 PathProgramCache]: Analyzing trace with hash -542344079, now seen corresponding path program 1 times [2021-11-22 20:33:29,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:33:29,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408207927] [2021-11-22 20:33:29,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:33:29,505 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:33:29,554 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:33:29,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [188085131] [2021-11-22 20:33:29,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:33:29,555 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:33:29,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:33:29,556 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 20:33:29,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-22 20:33:30,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:33:30,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 3500 conjuncts, 181 conjunts are in the unsatisfiable core [2021-11-22 20:33:30,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:33:31,004 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-22 20:33:31,005 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 31 treesize of output 37 [2021-11-22 20:33:31,015 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-22 20:33:31,016 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 38 [2021-11-22 20:33:31,024 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 7 treesize of output 3 [2021-11-22 20:33:31,026 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 7 treesize of output 3 [2021-11-22 20:33:31,092 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 12 [2021-11-22 20:33:31,094 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 6 treesize of output 5 [2021-11-22 20:33:31,168 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 12 [2021-11-22 20:33:31,170 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 6 treesize of output 5 [2021-11-22 20:33:31,475 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-22 20:33:31,476 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 31 treesize of output 37 [2021-11-22 20:33:31,486 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-22 20:33:31,486 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 32 treesize of output 38 [2021-11-22 20:33:31,495 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 7 treesize of output 3 [2021-11-22 20:33:31,499 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 7 treesize of output 3 [2021-11-22 20:33:31,662 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 11 treesize of output 5 [2021-11-22 20:33:31,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:33:31,763 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:33:31,763 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:33:31,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408207927] [2021-11-22 20:33:31,763 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:33:31,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [188085131] [2021-11-22 20:33:31,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [188085131] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:33:31,763 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:33:31,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2021-11-22 20:33:31,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398034503] [2021-11-22 20:33:31,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:33:31,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-11-22 20:33:31,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:33:31,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-11-22 20:33:31,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=791, Unknown=0, NotChecked=0, Total=870 [2021-11-22 20:33:31,765 INFO L87 Difference]: Start difference. First operand 2925 states and 3620 transitions. Second operand has 30 states, 30 states have (on average 6.5) internal successors, (195), 30 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:34:07,564 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-22 20:34:32,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:34:32,938 INFO L93 Difference]: Finished difference Result 29580 states and 36366 transitions. [2021-11-22 20:34:32,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 319 states. [2021-11-22 20:34:32,939 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 6.5) internal successors, (195), 30 states have internal predecessors, (195), 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 195 [2021-11-22 20:34:32,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:34:32,968 INFO L225 Difference]: With dead ends: 29580 [2021-11-22 20:34:32,968 INFO L226 Difference]: Without dead ends: 26873 [2021-11-22 20:34:32,990 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 508 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 342 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51330 ImplicationChecksByTransitivity, 17.1s TimeCoverageRelationStatistics Valid=10119, Invalid=107873, Unknown=0, NotChecked=0, Total=117992 [2021-11-22 20:34:32,990 INFO L933 BasicCegarLoop]: 7761 mSDtfsCounter, 77011 mSDsluCounter, 133534 mSDsCounter, 0 mSdLazyCounter, 50853 mSolverCounterSat, 3110 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77011 SdHoareTripleChecker+Valid, 141295 SdHoareTripleChecker+Invalid, 53964 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 3110 IncrementalHoareTripleChecker+Valid, 50853 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.8s IncrementalHoareTripleChecker+Time [2021-11-22 20:34:32,991 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77011 Valid, 141295 Invalid, 53964 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [3110 Valid, 50853 Invalid, 1 Unknown, 0 Unchecked, 40.8s Time] [2021-11-22 20:34:33,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26873 states. [2021-11-22 20:34:33,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26873 to 10949. [2021-11-22 20:34:33,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10949 states, 10885 states have (on average 1.268626550298576) internal successors, (13809), 10948 states have internal predecessors, (13809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:34:33,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10949 states to 10949 states and 13809 transitions. [2021-11-22 20:34:33,654 INFO L78 Accepts]: Start accepts. Automaton has 10949 states and 13809 transitions. Word has length 195 [2021-11-22 20:34:33,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:34:33,655 INFO L470 AbstractCegarLoop]: Abstraction has 10949 states and 13809 transitions. [2021-11-22 20:34:33,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 6.5) internal successors, (195), 30 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:34:33,655 INFO L276 IsEmpty]: Start isEmpty. Operand 10949 states and 13809 transitions. [2021-11-22 20:34:33,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-11-22 20:34:33,657 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:34:33,657 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:34:33,682 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-11-22 20:34:33,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-11-22 20:34:33,867 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-22 20:34:33,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:34:33,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1441585269, now seen corresponding path program 1 times [2021-11-22 20:34:33,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:34:33,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022123094] [2021-11-22 20:34:33,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:34:33,868 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:34:33,917 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:34:33,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [824876366] [2021-11-22 20:34:33,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:34:33,917 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:34:33,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:34:33,918 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 20:34:33,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-11-22 20:34:34,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:34:34,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 3505 conjuncts, 189 conjunts are in the unsatisfiable core [2021-11-22 20:34:34,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:34:34,838 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 [2021-11-22 20:34:34,973 INFO L354 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2021-11-22 20:34:34,973 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 37 [2021-11-22 20:34:35,200 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-11-22 20:34:35,200 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 21 [2021-11-22 20:34:35,286 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-22 20:34:35,286 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-22 20:34:35,320 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-22 20:34:35,320 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 35 treesize of output 37 [2021-11-22 20:34:35,327 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-22 20:34:35,327 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 29 treesize of output 31 [2021-11-22 20:34:35,630 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-22 20:34:35,630 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 33 [2021-11-22 20:34:35,637 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-22 20:34:35,637 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 28 treesize of output 34 [2021-11-22 20:34:35,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:34:35,877 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 0 case distinctions, treesize of input 41 treesize of output 40 [2021-11-22 20:34:35,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:34:35,879 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 0 case distinctions, treesize of input 30 treesize of output 29 [2021-11-22 20:34:36,040 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 0 case distinctions, treesize of input 37 treesize of output 36 [2021-11-22 20:34:36,043 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 0 case distinctions, treesize of input 26 treesize of output 25 [2021-11-22 20:34:36,144 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-22 20:34:36,145 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 33 [2021-11-22 20:34:36,154 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-22 20:34:36,154 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 28 treesize of output 34 [2021-11-22 20:34:36,211 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 [2021-11-22 20:34:36,213 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 [2021-11-22 20:34:36,216 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 10 treesize of output 4 [2021-11-22 20:34:36,218 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-22 20:34:36,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:34:36,607 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:34:36,607 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:34:36,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022123094] [2021-11-22 20:34:36,608 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:34:36,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824876366] [2021-11-22 20:34:36,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [824876366] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:34:36,608 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:34:36,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2021-11-22 20:34:36,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994692971] [2021-11-22 20:34:36,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:34:36,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-11-22 20:34:36,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:34:36,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-11-22 20:34:36,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=955, Unknown=0, NotChecked=0, Total=1056 [2021-11-22 20:34:36,612 INFO L87 Difference]: Start difference. First operand 10949 states and 13809 transitions. Second operand has 33 states, 33 states have (on average 5.96969696969697) internal successors, (197), 33 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:35:27,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:35:27,247 INFO L93 Difference]: Finished difference Result 60171 states and 75640 transitions. [2021-11-22 20:35:27,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2021-11-22 20:35:27,250 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.96969696969697) internal successors, (197), 33 states have internal predecessors, (197), 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 197 [2021-11-22 20:35:27,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:35:27,333 INFO L225 Difference]: With dead ends: 60171 [2021-11-22 20:35:27,334 INFO L226 Difference]: Without dead ends: 49368 [2021-11-22 20:35:27,352 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8976 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=3609, Invalid=20571, Unknown=0, NotChecked=0, Total=24180 [2021-11-22 20:35:27,353 INFO L933 BasicCegarLoop]: 6773 mSDtfsCounter, 27085 mSDsluCounter, 96441 mSDsCounter, 0 mSdLazyCounter, 34105 mSolverCounterSat, 2221 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27085 SdHoareTripleChecker+Valid, 103214 SdHoareTripleChecker+Invalid, 36326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 2221 IncrementalHoareTripleChecker+Valid, 34105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.5s IncrementalHoareTripleChecker+Time [2021-11-22 20:35:27,353 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27085 Valid, 103214 Invalid, 36326 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [2221 Valid, 34105 Invalid, 0 Unknown, 0 Unchecked, 37.5s Time] [2021-11-22 20:35:27,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49368 states. [2021-11-22 20:35:29,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49368 to 25379. [2021-11-22 20:35:29,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25379 states, 25315 states have (on average 1.2698400158009087) internal successors, (32146), 25378 states have internal predecessors, (32146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:35:29,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25379 states to 25379 states and 32146 transitions. [2021-11-22 20:35:29,211 INFO L78 Accepts]: Start accepts. Automaton has 25379 states and 32146 transitions. Word has length 197 [2021-11-22 20:35:29,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:35:29,211 INFO L470 AbstractCegarLoop]: Abstraction has 25379 states and 32146 transitions. [2021-11-22 20:35:29,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 5.96969696969697) internal successors, (197), 33 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:35:29,212 INFO L276 IsEmpty]: Start isEmpty. Operand 25379 states and 32146 transitions. [2021-11-22 20:35:29,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-11-22 20:35:29,216 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:35:29,216 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:35:29,242 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-11-22 20:35:29,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:35:29,432 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-22 20:35:29,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:35:29,432 INFO L85 PathProgramCache]: Analyzing trace with hash 603789911, now seen corresponding path program 1 times [2021-11-22 20:35:29,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:35:29,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30470993] [2021-11-22 20:35:29,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:35:29,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:35:29,485 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:35:29,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1552945771] [2021-11-22 20:35:29,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:35:29,486 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:35:29,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:35:29,487 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 20:35:29,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-22 20:35:30,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:35:30,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 3505 conjuncts, 91 conjunts are in the unsatisfiable core [2021-11-22 20:35:30,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:35:30,527 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 [2021-11-22 20:35:30,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:35:30,811 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 0 case distinctions, treesize of input 25 treesize of output 24 [2021-11-22 20:35:30,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:35:30,861 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 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-22 20:35:30,965 INFO L354 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2021-11-22 20:35:30,965 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 37 [2021-11-22 20:35:31,021 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 0 case distinctions, treesize of input 16 treesize of output 18 [2021-11-22 20:35:31,142 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-11-22 20:35:31,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 21 [2021-11-22 20:35:31,218 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-22 20:35:31,218 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-22 20:35:31,272 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-22 20:35:31,272 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 20 treesize of output 22 [2021-11-22 20:35:31,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:35:31,512 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:35:31,512 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:35:31,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30470993] [2021-11-22 20:35:31,512 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:35:31,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552945771] [2021-11-22 20:35:31,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1552945771] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:35:31,512 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:35:31,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-22 20:35:31,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362617632] [2021-11-22 20:35:31,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:35:31,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-22 20:35:31,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:35:31,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-22 20:35:31,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-11-22 20:35:31,513 INFO L87 Difference]: Start difference. First operand 25379 states and 32146 transitions. Second operand has 16 states, 16 states have (on average 12.3125) internal successors, (197), 16 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:35:46,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:35:46,267 INFO L93 Difference]: Finished difference Result 52630 states and 66179 transitions. [2021-11-22 20:35:46,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-22 20:35:46,270 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 12.3125) internal successors, (197), 16 states have internal predecessors, (197), 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 197 [2021-11-22 20:35:46,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:35:46,311 INFO L225 Difference]: With dead ends: 52630 [2021-11-22 20:35:46,311 INFO L226 Difference]: Without dead ends: 27323 [2021-11-22 20:35:46,330 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=179, Invalid=691, Unknown=0, NotChecked=0, Total=870 [2021-11-22 20:35:46,331 INFO L933 BasicCegarLoop]: 3083 mSDtfsCounter, 410 mSDsluCounter, 21262 mSDsCounter, 0 mSdLazyCounter, 7718 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 24345 SdHoareTripleChecker+Invalid, 7852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 7718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2021-11-22 20:35:46,331 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [410 Valid, 24345 Invalid, 7852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 7718 Invalid, 0 Unknown, 0 Unchecked, 12.5s Time] [2021-11-22 20:35:46,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27323 states. [2021-11-22 20:35:47,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27323 to 25433. [2021-11-22 20:35:47,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25433 states, 25369 states have (on average 1.2696598210414285) internal successors, (32210), 25432 states have internal predecessors, (32210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:35:47,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25433 states to 25433 states and 32210 transitions. [2021-11-22 20:35:47,965 INFO L78 Accepts]: Start accepts. Automaton has 25433 states and 32210 transitions. Word has length 197 [2021-11-22 20:35:47,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:35:47,965 INFO L470 AbstractCegarLoop]: Abstraction has 25433 states and 32210 transitions. [2021-11-22 20:35:47,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 12.3125) internal successors, (197), 16 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:35:47,965 INFO L276 IsEmpty]: Start isEmpty. Operand 25433 states and 32210 transitions. [2021-11-22 20:35:47,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-11-22 20:35:47,969 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:35:47,969 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:35:48,000 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-11-22 20:35:48,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:35:48,195 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-22 20:35:48,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:35:48,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1821519332, now seen corresponding path program 1 times [2021-11-22 20:35:48,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:35:48,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048297435] [2021-11-22 20:35:48,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:35:48,196 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:35:48,264 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:35:48,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1542245691] [2021-11-22 20:35:48,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:35:48,265 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:35:48,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:35:48,266 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 20:35:48,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-11-22 20:35:49,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:35:49,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 3568 conjuncts, 179 conjunts are in the unsatisfiable core [2021-11-22 20:35:49,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:35:49,756 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-22 20:35:49,756 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 16 treesize of output 22 [2021-11-22 20:35:49,763 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 7 treesize of output 3 [2021-11-22 20:35:50,094 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 [2021-11-22 20:35:50,226 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-22 20:35:50,227 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 14 treesize of output 20 [2021-11-22 20:35:50,294 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 6 treesize of output 5 [2021-11-22 20:35:50,589 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-22 20:35:50,590 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 31 treesize of output 37 [2021-11-22 20:35:50,598 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-22 20:35:50,598 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 32 treesize of output 38 [2021-11-22 20:35:50,624 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 7 treesize of output 3 [2021-11-22 20:35:50,626 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 7 treesize of output 3 [2021-11-22 20:35:50,701 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 12 [2021-11-22 20:35:50,704 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 6 treesize of output 5 [2021-11-22 20:35:50,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:35:50,985 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:35:50,985 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:35:50,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048297435] [2021-11-22 20:35:50,985 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:35:50,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542245691] [2021-11-22 20:35:50,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1542245691] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:35:50,985 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:35:50,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [41] imperfect sequences [] total 41 [2021-11-22 20:35:50,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816576205] [2021-11-22 20:35:50,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:35:50,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2021-11-22 20:35:50,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:35:50,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-11-22 20:35:50,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1530, Unknown=0, NotChecked=0, Total=1640 [2021-11-22 20:35:50,987 INFO L87 Difference]: Start difference. First operand 25433 states and 32210 transitions. Second operand has 41 states, 41 states have (on average 4.878048780487805) internal successors, (200), 41 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:43:05,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:43:05,806 INFO L93 Difference]: Finished difference Result 286241 states and 357621 transitions. [2021-11-22 20:43:05,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1266 states. [2021-11-22 20:43:05,810 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 4.878048780487805) internal successors, (200), 41 states have internal predecessors, (200), 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 200 [2021-11-22 20:43:05,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:43:06,504 INFO L225 Difference]: With dead ends: 286241 [2021-11-22 20:43:06,504 INFO L226 Difference]: Without dead ends: 263326 [2021-11-22 20:43:06,938 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1460 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 1300 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 828346 ImplicationChecksByTransitivity, 253.5s TimeCoverageRelationStatistics Valid=97849, Invalid=1596053, Unknown=0, NotChecked=0, Total=1693902 [2021-11-22 20:43:06,939 INFO L933 BasicCegarLoop]: 11691 mSDtfsCounter, 164570 mSDsluCounter, 268550 mSDsCounter, 0 mSdLazyCounter, 104318 mSolverCounterSat, 8601 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 114.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164570 SdHoareTripleChecker+Valid, 280241 SdHoareTripleChecker+Invalid, 112919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.9s SdHoareTripleChecker+Time, 8601 IncrementalHoareTripleChecker+Valid, 104318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 152.7s IncrementalHoareTripleChecker+Time [2021-11-22 20:43:06,939 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [164570 Valid, 280241 Invalid, 112919 Unknown, 0 Unchecked, 0.9s Time], IncrementalHoareTripleChecker [8601 Valid, 104318 Invalid, 0 Unknown, 0 Unchecked, 152.7s Time] [2021-11-22 20:43:07,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263326 states. [2021-11-22 20:43:13,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263326 to 69021. [2021-11-22 20:43:13,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69021 states, 68957 states have (on average 1.2687761938599418) internal successors, (87491), 69020 states have internal predecessors, (87491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:43:13,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69021 states to 69021 states and 87491 transitions. [2021-11-22 20:43:13,897 INFO L78 Accepts]: Start accepts. Automaton has 69021 states and 87491 transitions. Word has length 200 [2021-11-22 20:43:13,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:43:13,898 INFO L470 AbstractCegarLoop]: Abstraction has 69021 states and 87491 transitions. [2021-11-22 20:43:13,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 4.878048780487805) internal successors, (200), 41 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:43:13,898 INFO L276 IsEmpty]: Start isEmpty. Operand 69021 states and 87491 transitions. [2021-11-22 20:43:13,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-11-22 20:43:13,905 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:43:13,905 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:43:13,945 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-11-22 20:43:14,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-11-22 20:43:14,131 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-22 20:43:14,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:43:14,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1963974874, now seen corresponding path program 1 times [2021-11-22 20:43:14,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:43:14,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998563363] [2021-11-22 20:43:14,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:43:14,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:43:14,180 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:43:14,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [220978532] [2021-11-22 20:43:14,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:43:14,181 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:43:14,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:43:14,181 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 20:43:14,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-11-22 20:43:15,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:43:15,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 3563 conjuncts, 64 conjunts are in the unsatisfiable core [2021-11-22 20:43:15,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:43:15,796 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 20:43:15,796 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 55 [2021-11-22 20:43:16,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:43:16,139 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:43:16,139 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:43:16,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998563363] [2021-11-22 20:43:16,140 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:43:16,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [220978532] [2021-11-22 20:43:16,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [220978532] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:43:16,140 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:43:16,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-22 20:43:16,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142036408] [2021-11-22 20:43:16,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:43:16,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 20:43:16,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:43:16,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 20:43:16,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-22 20:43:16,141 INFO L87 Difference]: Start difference. First operand 69021 states and 87491 transitions. Second operand has 7 states, 7 states have (on average 28.571428571428573) internal successors, (200), 7 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:43:36,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:43:36,522 INFO L93 Difference]: Finished difference Result 229097 states and 289514 transitions. [2021-11-22 20:43:36,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-22 20:43:36,522 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 28.571428571428573) internal successors, (200), 7 states have internal predecessors, (200), 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 200 [2021-11-22 20:43:36,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:43:36,787 INFO L225 Difference]: With dead ends: 229097 [2021-11-22 20:43:36,787 INFO L226 Difference]: Without dead ends: 160285 [2021-11-22 20:43:36,849 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2021-11-22 20:43:36,850 INFO L933 BasicCegarLoop]: 5160 mSDtfsCounter, 12309 mSDsluCounter, 12777 mSDsCounter, 0 mSdLazyCounter, 1999 mSolverCounterSat, 532 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12309 SdHoareTripleChecker+Valid, 17937 SdHoareTripleChecker+Invalid, 2531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 532 IncrementalHoareTripleChecker+Valid, 1999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2021-11-22 20:43:36,850 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12309 Valid, 17937 Invalid, 2531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [532 Valid, 1999 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2021-11-22 20:43:37,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160285 states. [2021-11-22 20:43:43,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160285 to 71978. [2021-11-22 20:43:43,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71978 states, 71914 states have (on average 1.2669021331034291) internal successors, (91108), 71977 states have internal predecessors, (91108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:43:43,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71978 states to 71978 states and 91108 transitions. [2021-11-22 20:43:43,154 INFO L78 Accepts]: Start accepts. Automaton has 71978 states and 91108 transitions. Word has length 200 [2021-11-22 20:43:43,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:43:43,154 INFO L470 AbstractCegarLoop]: Abstraction has 71978 states and 91108 transitions. [2021-11-22 20:43:43,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 28.571428571428573) internal successors, (200), 7 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:43:43,154 INFO L276 IsEmpty]: Start isEmpty. Operand 71978 states and 91108 transitions. [2021-11-22 20:43:43,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-11-22 20:43:43,161 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:43:43,161 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:43:43,191 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2021-11-22 20:43:43,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-11-22 20:43:43,371 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-22 20:43:43,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:43:43,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1664302736, now seen corresponding path program 1 times [2021-11-22 20:43:43,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:43:43,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373761915] [2021-11-22 20:43:43,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:43:43,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:43:43,472 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:43:43,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [539903169] [2021-11-22 20:43:43,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:43:43,473 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:43:43,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:43:43,474 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 20:43:43,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-11-22 20:43:44,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:43:44,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 3572 conjuncts, 35 conjunts are in the unsatisfiable core [2021-11-22 20:43:44,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:43:44,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:43:44,577 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:43:44,577 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:43:44,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373761915] [2021-11-22 20:43:44,578 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:43:44,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539903169] [2021-11-22 20:43:44,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [539903169] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:43:44,578 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:43:44,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-22 20:43:44,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129274526] [2021-11-22 20:43:44,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:43:44,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 20:43:44,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:43:44,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 20:43:44,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-22 20:43:44,581 INFO L87 Difference]: Start difference. First operand 71978 states and 91108 transitions. Second operand has 7 states, 7 states have (on average 28.571428571428573) internal successors, (200), 7 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:43:53,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:43:53,533 INFO L93 Difference]: Finished difference Result 163128 states and 206680 transitions. [2021-11-22 20:43:53,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-22 20:43:53,535 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 28.571428571428573) internal successors, (200), 7 states have internal predecessors, (200), 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 200 [2021-11-22 20:43:53,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:43:53,681 INFO L225 Difference]: With dead ends: 163128 [2021-11-22 20:43:53,681 INFO L226 Difference]: Without dead ends: 90554 [2021-11-22 20:43:53,720 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-11-22 20:43:53,721 INFO L933 BasicCegarLoop]: 4385 mSDtfsCounter, 3297 mSDsluCounter, 19373 mSDsCounter, 0 mSdLazyCounter, 798 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3297 SdHoareTripleChecker+Valid, 23758 SdHoareTripleChecker+Invalid, 927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 798 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-22 20:43:53,721 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3297 Valid, 23758 Invalid, 927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 798 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-22 20:43:53,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90554 states. [2021-11-22 20:43:58,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90554 to 51919. [2021-11-22 20:43:58,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51919 states, 51855 states have (on average 1.2653553177128531) internal successors, (65615), 51918 states have internal predecessors, (65615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:43:58,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51919 states to 51919 states and 65615 transitions. [2021-11-22 20:43:58,426 INFO L78 Accepts]: Start accepts. Automaton has 51919 states and 65615 transitions. Word has length 200 [2021-11-22 20:43:58,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:43:58,426 INFO L470 AbstractCegarLoop]: Abstraction has 51919 states and 65615 transitions. [2021-11-22 20:43:58,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 28.571428571428573) internal successors, (200), 7 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:43:58,426 INFO L276 IsEmpty]: Start isEmpty. Operand 51919 states and 65615 transitions. [2021-11-22 20:43:58,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-11-22 20:43:58,432 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:43:58,432 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:43:58,457 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2021-11-22 20:43:58,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-11-22 20:43:58,648 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-22 20:43:58,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:43:58,648 INFO L85 PathProgramCache]: Analyzing trace with hash -248396583, now seen corresponding path program 1 times [2021-11-22 20:43:58,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:43:58,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722490930] [2021-11-22 20:43:58,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:43:58,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:43:58,717 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:43:58,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2106080149] [2021-11-22 20:43:58,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:43:58,718 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:43:58,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:43:58,719 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 20:43:58,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-11-22 20:44:02,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:44:02,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 3530 conjuncts, 531 conjunts are in the unsatisfiable core [2021-11-22 20:44:02,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:44:02,758 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 [2021-11-22 20:44:03,000 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-11-22 20:44:03,000 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 20 [2021-11-22 20:44:03,141 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 [2021-11-22 20:44:03,361 INFO L354 Elim1Store]: treesize reduction 106, result has 23.2 percent of original size [2021-11-22 20:44:03,361 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 37 treesize of output 56 [2021-11-22 20:44:03,513 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-22 20:44:03,927 INFO L354 Elim1Store]: treesize reduction 52, result has 17.5 percent of original size [2021-11-22 20:44:03,927 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 33 treesize of output 36 [2021-11-22 20:44:04,471 INFO L354 Elim1Store]: treesize reduction 106, result has 23.2 percent of original size [2021-11-22 20:44:04,471 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 37 treesize of output 56 [2021-11-22 20:44:04,766 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 0 case distinctions, treesize of input 32 treesize of output 31 [2021-11-22 20:44:05,567 INFO L354 Elim1Store]: treesize reduction 52, result has 17.5 percent of original size [2021-11-22 20:44:05,568 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 33 treesize of output 36 [2021-11-22 20:44:07,316 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-11-22 20:44:07,316 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 28 [2021-11-22 20:44:07,952 INFO L354 Elim1Store]: treesize reduction 110, result has 20.3 percent of original size [2021-11-22 20:44:07,952 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 44 treesize of output 59 [2021-11-22 20:44:08,132 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 0 case distinctions, treesize of input 22 treesize of output 21 [2021-11-22 20:44:08,458 INFO L354 Elim1Store]: treesize reduction 52, result has 17.5 percent of original size [2021-11-22 20:44:08,459 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 36 treesize of output 39 [2021-11-22 20:44:08,895 INFO L354 Elim1Store]: treesize reduction 106, result has 23.2 percent of original size [2021-11-22 20:44:08,895 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 39 treesize of output 58 [2021-11-22 20:44:09,116 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 0 case distinctions, treesize of input 22 treesize of output 21 [2021-11-22 20:44:09,756 INFO L354 Elim1Store]: treesize reduction 52, result has 17.5 percent of original size [2021-11-22 20:44:09,756 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 38 [2021-11-22 20:44:10,087 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 0 case distinctions, treesize of input 65 treesize of output 64 [2021-11-22 20:44:10,090 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 54 treesize of output 50 [2021-11-22 20:44:10,107 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-11-22 20:44:10,108 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 55 [2021-11-22 20:44:10,110 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 49 treesize of output 45 [2021-11-22 20:44:10,240 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 20:44:10,240 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 56 [2021-11-22 20:44:10,246 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 20:44:10,246 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 49 [2021-11-22 20:44:10,418 INFO L354 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2021-11-22 20:44:10,418 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 38 treesize of output 42 [2021-11-22 20:44:10,564 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-22 20:44:10,564 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 21 treesize of output 23 [2021-11-22 20:44:10,895 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 20:44:10,895 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 24 [2021-11-22 20:44:11,745 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 20:44:11,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:44:11,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:44:11,751 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 20:44:11,752 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 37 [2021-11-22 20:44:25,861 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-11-22 20:44:25,861 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 4 new quantified variables, introduced 7 case distinctions, treesize of input 63 treesize of output 63 [2021-11-22 20:44:28,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:44:28,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:44:28,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:44:28,320 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 20:44:28,321 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 20:44:28,325 INFO L354 Elim1Store]: treesize reduction 6, result has 14.3 percent of original size [2021-11-22 20:44:28,325 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 73 treesize of output 72 [2021-11-22 20:44:32,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:44:32,885 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:44:32,885 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:44:32,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722490930] [2021-11-22 20:44:32,885 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:44:32,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2106080149] [2021-11-22 20:44:32,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2106080149] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:44:32,886 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:44:32,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [60] imperfect sequences [] total 60 [2021-11-22 20:44:32,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379027401] [2021-11-22 20:44:32,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:44:32,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2021-11-22 20:44:32,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:44:32,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2021-11-22 20:44:32,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=3329, Unknown=0, NotChecked=0, Total=3540 [2021-11-22 20:44:32,887 INFO L87 Difference]: Start difference. First operand 51919 states and 65615 transitions. Second operand has 60 states, 60 states have (on average 3.3333333333333335) internal successors, (200), 60 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:44:36,924 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-22 20:44:52,454 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-22 20:44:53,975 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-22 20:45:00,375 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-22 20:45:04,450 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-22 20:45:06,747 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-22 20:45:09,400 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-22 20:45:20,224 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-22 20:45:23,172 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-22 20:45:25,393 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-22 20:45:27,713 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-22 20:45:29,927 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-22 20:45:36,543 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-22 20:45:39,566 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-22 20:45:48,982 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-22 20:45:52,288 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-22 20:45:54,851 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-22 20:45:58,431 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-22 20:46:00,821 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-22 20:46:06,801 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-22 20:46:11,383 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-22 20:46:16,175 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-22 20:46:19,697 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-22 20:46:21,922 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-22 20:46:27,810 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-22 20:46:29,898 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-22 20:46:34,353 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-22 20:46:42,999 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-22 20:46:46,010 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] Killed by 15