./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_hash_iter_next_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ae007674 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_hash_iter_next_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 13ab51b5126028da19fd5973a25f590452a4763e1cc4e396aeee438668151298 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 03:18:17,675 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 03:18:17,676 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 03:18:17,710 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 03:18:17,711 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 03:18:17,713 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 03:18:17,715 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 03:18:17,719 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 03:18:17,721 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 03:18:17,725 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 03:18:17,726 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 03:18:17,729 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 03:18:17,730 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 03:18:17,732 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 03:18:17,733 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 03:18:17,735 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 03:18:17,736 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 03:18:17,737 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 03:18:17,738 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 03:18:17,742 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 03:18:17,743 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 03:18:17,745 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 03:18:17,746 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 03:18:17,747 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 03:18:17,758 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 03:18:17,759 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 03:18:17,759 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 03:18:17,761 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 03:18:17,761 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 03:18:17,762 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 03:18:17,762 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 03:18:17,762 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 03:18:17,763 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 03:18:17,763 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 03:18:17,765 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 03:18:17,765 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 03:18:17,766 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 03:18:17,766 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 03:18:17,766 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 03:18:17,767 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 03:18:17,768 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 03:18:17,771 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-28 03:18:17,800 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 03:18:17,801 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 03:18:17,801 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 03:18:17,802 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 03:18:17,802 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 03:18:17,803 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 03:18:17,804 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 03:18:17,804 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 03:18:17,804 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 03:18:17,804 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 03:18:17,805 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 03:18:17,805 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 03:18:17,805 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 03:18:17,805 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 03:18:17,805 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 03:18:17,806 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 03:18:17,806 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 03:18:17,806 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 03:18:17,806 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 03:18:17,806 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 03:18:17,806 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 03:18:17,807 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:18:17,807 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 03:18:17,807 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 03:18:17,807 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 03:18:17,807 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 03:18:17,807 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 03:18:17,807 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 03:18:17,808 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 03:18:17,808 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 03:18:17,808 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 13ab51b5126028da19fd5973a25f590452a4763e1cc4e396aeee438668151298 [2021-12-28 03:18:18,063 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 03:18:18,086 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 03:18:18,088 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 03:18:18,090 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 03:18:18,090 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 03:18:18,091 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_hash_iter_next_harness.i [2021-12-28 03:18:18,129 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6e954af9/adb44f3e99b348278070b19edf7c886e/FLAG5cf2bf905 [2021-12-28 03:18:18,699 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 03:18:18,699 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_iter_next_harness.i [2021-12-28 03:18:18,722 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6e954af9/adb44f3e99b348278070b19edf7c886e/FLAG5cf2bf905 [2021-12-28 03:18:18,861 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6e954af9/adb44f3e99b348278070b19edf7c886e [2021-12-28 03:18:18,863 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 03:18:18,864 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 03:18:18,866 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 03:18:18,866 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 03:18:18,869 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 03:18:18,870 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:18:18" (1/1) ... [2021-12-28 03:18:18,870 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27f54e79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:18:18, skipping insertion in model container [2021-12-28 03:18:18,870 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:18:18" (1/1) ... [2021-12-28 03:18:18,875 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 03:18:19,008 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 03:18:19,257 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_iter_next_harness.i[4492,4505] [2021-12-28 03:18:19,261 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_iter_next_harness.i[4552,4565] [2021-12-28 03:18:19,768 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:19,772 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:19,773 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:19,773 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:19,774 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:19,784 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:19,787 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:19,790 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:19,792 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:19,796 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:19,797 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:19,797 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:19,798 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:20,038 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-28 03:18:20,039 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-28 03:18:20,041 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-28 03:18:20,042 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-28 03:18:20,044 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-28 03:18:20,052 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-28 03:18:20,052 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-28 03:18:20,052 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-28 03:18:20,053 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-28 03:18:20,054 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-28 03:18:20,179 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-28 03:18:20,346 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:20,346 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:20,355 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:20,355 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:20,358 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:20,358 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:20,364 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:20,364 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:20,365 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:20,365 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:20,365 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:20,365 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:20,366 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:20,386 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:18:20,423 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 03:18:20,441 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_iter_next_harness.i[4492,4505] [2021-12-28 03:18:20,441 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_iter_next_harness.i[4552,4565] [2021-12-28 03:18:20,470 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:20,470 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:20,471 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:20,471 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:20,472 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:20,477 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:20,478 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:20,479 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:20,479 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:20,479 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:20,480 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:20,480 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:20,480 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:20,507 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-28 03:18:20,508 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-28 03:18:20,508 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-28 03:18:20,509 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-28 03:18:20,511 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-28 03:18:20,511 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-28 03:18:20,511 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-28 03:18:20,512 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-28 03:18:20,512 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-28 03:18:20,512 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-28 03:18:20,530 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-28 03:18:20,643 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:20,643 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:20,647 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:20,648 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:20,649 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:20,650 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:20,659 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:20,659 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:20,660 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:20,660 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:20,660 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:20,660 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:20,661 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:20,680 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:18:20,855 INFO L208 MainTranslator]: Completed translation [2021-12-28 03:18:20,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:18:20 WrapperNode [2021-12-28 03:18:20,855 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 03:18:20,857 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 03:18:20,857 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 03:18:20,857 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 03:18:20,861 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:18:20" (1/1) ... [2021-12-28 03:18:20,956 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:18:20" (1/1) ... [2021-12-28 03:18:21,024 INFO L137 Inliner]: procedures = 774, calls = 2452, calls flagged for inlining = 67, calls inlined = 11, statements flattened = 641 [2021-12-28 03:18:21,024 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 03:18:21,025 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 03:18:21,026 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 03:18:21,026 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 03:18:21,031 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:18:20" (1/1) ... [2021-12-28 03:18:21,032 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:18:20" (1/1) ... [2021-12-28 03:18:21,042 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:18:20" (1/1) ... [2021-12-28 03:18:21,043 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:18:20" (1/1) ... [2021-12-28 03:18:21,087 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:18:20" (1/1) ... [2021-12-28 03:18:21,092 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:18:20" (1/1) ... [2021-12-28 03:18:21,105 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:18:20" (1/1) ... [2021-12-28 03:18:21,123 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 03:18:21,128 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 03:18:21,128 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 03:18:21,128 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 03:18:21,129 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:18:20" (1/1) ... [2021-12-28 03:18:21,134 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:18:21,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:18:21,151 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-28 03:18:21,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-28 03:18:21,179 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-12-28 03:18:21,179 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-28 03:18:21,179 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-12-28 03:18:21,179 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-12-28 03:18:21,180 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-28 03:18:21,180 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-28 03:18:21,180 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2021-12-28 03:18:21,180 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2021-12-28 03:18:21,180 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-28 03:18:21,180 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 03:18:21,180 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_iter_next [2021-12-28 03:18:21,181 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_iter_next [2021-12-28 03:18:21,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-28 03:18:21,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 03:18:21,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 03:18:21,181 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-28 03:18:21,181 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-28 03:18:21,181 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-12-28 03:18:21,182 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-12-28 03:18:21,182 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-28 03:18:21,182 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2021-12-28 03:18:21,182 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2021-12-28 03:18:21,182 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-28 03:18:21,182 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-12-28 03:18:21,182 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-12-28 03:18:21,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-28 03:18:21,183 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2021-12-28 03:18:21,183 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2021-12-28 03:18:21,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-28 03:18:21,183 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2021-12-28 03:18:21,183 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2021-12-28 03:18:21,183 INFO L130 BoogieDeclarations]: Found specification of procedure s_get_next_element [2021-12-28 03:18:21,184 INFO L138 BoogieDeclarations]: Found implementation of procedure s_get_next_element [2021-12-28 03:18:21,184 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-28 03:18:21,184 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-28 03:18:21,184 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_iter_is_valid [2021-12-28 03:18:21,184 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_iter_is_valid [2021-12-28 03:18:21,184 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2021-12-28 03:18:21,184 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2021-12-28 03:18:21,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-28 03:18:21,185 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-12-28 03:18:21,185 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-12-28 03:18:21,185 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2021-12-28 03:18:21,186 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2021-12-28 03:18:21,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 03:18:21,460 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 03:18:21,461 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 03:18:22,047 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 03:18:22,054 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 03:18:22,054 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-28 03:18:22,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:18:22 BoogieIcfgContainer [2021-12-28 03:18:22,056 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 03:18:22,057 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 03:18:22,061 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 03:18:22,063 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 03:18:22,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 03:18:18" (1/3) ... [2021-12-28 03:18:22,063 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f676bc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:18:22, skipping insertion in model container [2021-12-28 03:18:22,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:18:20" (2/3) ... [2021-12-28 03:18:22,064 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f676bc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:18:22, skipping insertion in model container [2021-12-28 03:18:22,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:18:22" (3/3) ... [2021-12-28 03:18:22,065 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_iter_next_harness.i [2021-12-28 03:18:22,068 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 03:18:22,068 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-28 03:18:22,109 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 03:18:22,113 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-28 03:18:22,114 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-28 03:18:22,129 INFO L276 IsEmpty]: Start isEmpty. Operand has 167 states, 106 states have (on average 1.2452830188679245) internal successors, (132), 107 states have internal predecessors, (132), 43 states have call successors, (43), 16 states have call predecessors, (43), 16 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2021-12-28 03:18:22,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-12-28 03:18:22,138 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:18:22,138 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:18:22,139 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:18:22,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:18:22,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1338571704, now seen corresponding path program 1 times [2021-12-28 03:18:22,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:18:22,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284747307] [2021-12-28 03:18:22,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:18:22,160 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:18:22,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:22,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:18:22,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:22,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:18:22,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:22,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:18:22,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:22,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-28 03:18:22,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:22,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-28 03:18:22,540 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:18:22,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284747307] [2021-12-28 03:18:22,540 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-12-28 03:18:22,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836425384] [2021-12-28 03:18:22,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:18:22,541 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:18:22,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:18:22,542 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) [2021-12-28 03:18:22,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-28 03:18:22,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:23,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 2581 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-28 03:18:23,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:18:23,270 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2021-12-28 03:18:23,270 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:18:23,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1836425384] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:18:23,271 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:18:23,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-28 03:18:23,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935165890] [2021-12-28 03:18:23,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:18:23,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-28 03:18:23,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:18:23,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-28 03:18:23,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:18:23,296 INFO L87 Difference]: Start difference. First operand has 167 states, 106 states have (on average 1.2452830188679245) internal successors, (132), 107 states have internal predecessors, (132), 43 states have call successors, (43), 16 states have call predecessors, (43), 16 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) Second operand has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-28 03:18:23,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:18:23,346 INFO L93 Difference]: Finished difference Result 326 states and 449 transitions. [2021-12-28 03:18:23,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-28 03:18:23,348 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 154 [2021-12-28 03:18:23,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:18:23,355 INFO L225 Difference]: With dead ends: 326 [2021-12-28 03:18:23,355 INFO L226 Difference]: Without dead ends: 161 [2021-12-28 03:18:23,358 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:18:23,361 INFO L933 BasicCegarLoop]: 215 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, 215 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 03:18:23,362 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 03:18:23,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-12-28 03:18:23,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2021-12-28 03:18:23,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 101 states have (on average 1.2277227722772277) internal successors, (124), 102 states have internal predecessors, (124), 43 states have call successors, (43), 16 states have call predecessors, (43), 16 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2021-12-28 03:18:23,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 209 transitions. [2021-12-28 03:18:23,417 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 209 transitions. Word has length 154 [2021-12-28 03:18:23,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:18:23,418 INFO L470 AbstractCegarLoop]: Abstraction has 161 states and 209 transitions. [2021-12-28 03:18:23,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-28 03:18:23,418 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 209 transitions. [2021-12-28 03:18:23,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-12-28 03:18:23,421 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:18:23,421 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:18:23,444 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-28 03:18:23,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-12-28 03:18:23,641 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:18:23,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:18:23,642 INFO L85 PathProgramCache]: Analyzing trace with hash 539862202, now seen corresponding path program 1 times [2021-12-28 03:18:23,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:18:23,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547075515] [2021-12-28 03:18:23,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:18:23,643 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:18:23,724 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:18:23,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [74048261] [2021-12-28 03:18:23,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:18:23,725 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:18:23,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:18:23,726 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) [2021-12-28 03:18:23,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-28 03:18:24,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:24,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 2581 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-28 03:18:24,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:18:24,448 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-12-28 03:18:24,449 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:18:24,449 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:18:24,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547075515] [2021-12-28 03:18:24,449 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:18:24,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74048261] [2021-12-28 03:18:24,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [74048261] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:18:24,449 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:18:24,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 03:18:24,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483450514] [2021-12-28 03:18:24,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:18:24,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 03:18:24,451 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:18:24,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 03:18:24,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-28 03:18:24,452 INFO L87 Difference]: Start difference. First operand 161 states and 209 transitions. Second operand has 6 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (24), 2 states have call predecessors, (24), 3 states have call successors, (24) [2021-12-28 03:18:24,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:18:24,585 INFO L93 Difference]: Finished difference Result 297 states and 388 transitions. [2021-12-28 03:18:24,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 03:18:24,586 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (24), 2 states have call predecessors, (24), 3 states have call successors, (24) Word has length 154 [2021-12-28 03:18:24,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:18:24,591 INFO L225 Difference]: With dead ends: 297 [2021-12-28 03:18:24,592 INFO L226 Difference]: Without dead ends: 163 [2021-12-28 03:18:24,593 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-12-28 03:18:24,593 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 173 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 651 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:18:24,594 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [179 Valid, 651 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 03:18:24,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-12-28 03:18:24,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2021-12-28 03:18:24,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 102 states have (on average 1.2254901960784315) internal successors, (125), 104 states have internal predecessors, (125), 43 states have call successors, (43), 16 states have call predecessors, (43), 17 states have return successors, (45), 42 states have call predecessors, (45), 42 states have call successors, (45) [2021-12-28 03:18:24,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 213 transitions. [2021-12-28 03:18:24,610 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 213 transitions. Word has length 154 [2021-12-28 03:18:24,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:18:24,611 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 213 transitions. [2021-12-28 03:18:24,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (24), 2 states have call predecessors, (24), 3 states have call successors, (24) [2021-12-28 03:18:24,615 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 213 transitions. [2021-12-28 03:18:24,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-12-28 03:18:24,620 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:18:24,620 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:18:24,642 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-28 03:18:24,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-12-28 03:18:24,835 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:18:24,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:18:24,835 INFO L85 PathProgramCache]: Analyzing trace with hash 706357182, now seen corresponding path program 1 times [2021-12-28 03:18:24,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:18:24,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010311272] [2021-12-28 03:18:24,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:18:24,836 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:18:24,886 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:18:24,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1462279644] [2021-12-28 03:18:24,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:18:24,887 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:18:24,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:18:24,888 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) [2021-12-28 03:18:24,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-28 03:18:25,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:25,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 2586 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-28 03:18:25,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:18:25,553 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 102 proven. 55 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-12-28 03:18:25,553 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:18:25,865 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2021-12-28 03:18:25,865 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:18:25,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010311272] [2021-12-28 03:18:25,866 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:18:25,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462279644] [2021-12-28 03:18:25,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1462279644] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 03:18:25,866 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-28 03:18:25,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-12-28 03:18:25,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473169378] [2021-12-28 03:18:25,867 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-28 03:18:25,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-28 03:18:25,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:18:25,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-28 03:18:25,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-12-28 03:18:25,869 INFO L87 Difference]: Start difference. First operand 163 states and 213 transitions. Second operand has 13 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 8 states have call successors, (48), 5 states have call predecessors, (48), 4 states have return successors, (44), 6 states have call predecessors, (44), 8 states have call successors, (44) [2021-12-28 03:18:26,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:18:26,096 INFO L93 Difference]: Finished difference Result 249 states and 329 transitions. [2021-12-28 03:18:26,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-28 03:18:26,097 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 8 states have call successors, (48), 5 states have call predecessors, (48), 4 states have return successors, (44), 6 states have call predecessors, (44), 8 states have call successors, (44) Word has length 155 [2021-12-28 03:18:26,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:18:26,098 INFO L225 Difference]: With dead ends: 249 [2021-12-28 03:18:26,098 INFO L226 Difference]: Without dead ends: 163 [2021-12-28 03:18:26,099 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 298 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2021-12-28 03:18:26,100 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 216 mSDsluCounter, 1071 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 1235 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-28 03:18:26,100 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [218 Valid, 1235 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-28 03:18:26,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-12-28 03:18:26,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2021-12-28 03:18:26,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 102 states have (on average 1.2254901960784315) internal successors, (125), 104 states have internal predecessors, (125), 43 states have call successors, (43), 16 states have call predecessors, (43), 17 states have return successors, (43), 42 states have call predecessors, (43), 42 states have call successors, (43) [2021-12-28 03:18:26,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 211 transitions. [2021-12-28 03:18:26,112 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 211 transitions. Word has length 155 [2021-12-28 03:18:26,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:18:26,112 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 211 transitions. [2021-12-28 03:18:26,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 8 states have call successors, (48), 5 states have call predecessors, (48), 4 states have return successors, (44), 6 states have call predecessors, (44), 8 states have call successors, (44) [2021-12-28 03:18:26,113 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 211 transitions. [2021-12-28 03:18:26,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-28 03:18:26,114 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:18:26,114 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:18:26,134 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-28 03:18:26,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:18:26,324 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:18:26,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:18:26,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1731864020, now seen corresponding path program 2 times [2021-12-28 03:18:26,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:18:26,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466982212] [2021-12-28 03:18:26,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:18:26,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:18:26,425 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:18:26,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1777278502] [2021-12-28 03:18:26,426 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-28 03:18:26,426 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:18:26,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:18:26,427 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) [2021-12-28 03:18:26,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-28 03:18:27,006 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-28 03:18:27,006 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 03:18:27,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 2591 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-28 03:18:27,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:18:27,264 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 6 proven. 122 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2021-12-28 03:18:27,264 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:18:27,562 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2021-12-28 03:18:27,563 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:18:27,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466982212] [2021-12-28 03:18:27,563 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:18:27,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1777278502] [2021-12-28 03:18:27,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1777278502] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-28 03:18:27,564 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:18:27,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 17 [2021-12-28 03:18:27,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622165225] [2021-12-28 03:18:27,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:18:27,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-28 03:18:27,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:18:27,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-28 03:18:27,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2021-12-28 03:18:27,566 INFO L87 Difference]: Start difference. First operand 163 states and 211 transitions. Second operand has 10 states, 10 states have (on average 5.8) internal successors, (58), 8 states have internal predecessors, (58), 6 states have call successors, (25), 4 states have call predecessors, (25), 2 states have return successors, (22), 6 states have call predecessors, (22), 5 states have call successors, (22) [2021-12-28 03:18:27,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:18:27,904 INFO L93 Difference]: Finished difference Result 231 states and 301 transitions. [2021-12-28 03:18:27,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-28 03:18:27,905 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 8 states have internal predecessors, (58), 6 states have call successors, (25), 4 states have call predecessors, (25), 2 states have return successors, (22), 6 states have call predecessors, (22), 5 states have call successors, (22) Word has length 156 [2021-12-28 03:18:27,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:18:27,906 INFO L225 Difference]: With dead ends: 231 [2021-12-28 03:18:27,906 INFO L226 Difference]: Without dead ends: 161 [2021-12-28 03:18:27,907 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=479, Unknown=0, NotChecked=0, Total=552 [2021-12-28 03:18:27,908 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 226 mSDsluCounter, 889 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 1044 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-28 03:18:27,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [226 Valid, 1044 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-28 03:18:27,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-12-28 03:18:27,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2021-12-28 03:18:27,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 101 states have (on average 1.2178217821782178) internal successors, (123), 102 states have internal predecessors, (123), 43 states have call successors, (43), 16 states have call predecessors, (43), 16 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2021-12-28 03:18:27,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 208 transitions. [2021-12-28 03:18:27,918 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 208 transitions. Word has length 156 [2021-12-28 03:18:27,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:18:27,919 INFO L470 AbstractCegarLoop]: Abstraction has 161 states and 208 transitions. [2021-12-28 03:18:27,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 8 states have internal predecessors, (58), 6 states have call successors, (25), 4 states have call predecessors, (25), 2 states have return successors, (22), 6 states have call predecessors, (22), 5 states have call successors, (22) [2021-12-28 03:18:27,919 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 208 transitions. [2021-12-28 03:18:27,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-12-28 03:18:27,921 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:18:27,921 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:18:27,946 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-28 03:18:28,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:18:28,142 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:18:28,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:18:28,142 INFO L85 PathProgramCache]: Analyzing trace with hash 2064715578, now seen corresponding path program 1 times [2021-12-28 03:18:28,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:18:28,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141591229] [2021-12-28 03:18:28,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:18:28,143 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:18:28,203 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:18:28,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1169285570] [2021-12-28 03:18:28,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:18:28,223 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:18:28,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:18:28,225 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) [2021-12-28 03:18:28,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-28 03:18:28,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:28,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 2588 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-28 03:18:28,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:18:28,834 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2021-12-28 03:18:28,835 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:18:28,835 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:18:28,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141591229] [2021-12-28 03:18:28,835 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:18:28,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169285570] [2021-12-28 03:18:28,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1169285570] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:18:28,835 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:18:28,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 03:18:28,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115971312] [2021-12-28 03:18:28,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:18:28,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 03:18:28,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:18:28,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 03:18:28,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:18:28,837 INFO L87 Difference]: Start difference. First operand 161 states and 208 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) [2021-12-28 03:18:28,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:18:28,857 INFO L93 Difference]: Finished difference Result 315 states and 408 transitions. [2021-12-28 03:18:28,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 03:18:28,858 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) Word has length 155 [2021-12-28 03:18:28,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:18:28,871 INFO L225 Difference]: With dead ends: 315 [2021-12-28 03:18:28,871 INFO L226 Difference]: Without dead ends: 166 [2021-12-28 03:18:28,872 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-28 03:18:28,873 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 2 mSDsluCounter, 611 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 816 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 03:18:28,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 816 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 03:18:28,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-12-28 03:18:28,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2021-12-28 03:18:28,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 105 states have (on average 1.2095238095238094) internal successors, (127), 106 states have internal predecessors, (127), 43 states have call successors, (43), 16 states have call predecessors, (43), 17 states have return successors, (43), 43 states have call predecessors, (43), 42 states have call successors, (43) [2021-12-28 03:18:28,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 213 transitions. [2021-12-28 03:18:28,881 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 213 transitions. Word has length 155 [2021-12-28 03:18:28,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:18:28,881 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 213 transitions. [2021-12-28 03:18:28,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) [2021-12-28 03:18:28,881 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 213 transitions. [2021-12-28 03:18:28,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-12-28 03:18:28,882 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:18:28,882 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:18:28,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-28 03:18:29,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:18:29,104 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:18:29,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:18:29,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1425847546, now seen corresponding path program 1 times [2021-12-28 03:18:29,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:18:29,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420775868] [2021-12-28 03:18:29,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:18:29,105 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:18:29,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:29,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:18:29,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:29,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:18:29,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:29,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:18:29,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:29,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-28 03:18:29,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:29,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-28 03:18:29,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:29,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:29,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:29,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:29,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:29,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:18:29,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:29,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-28 03:18:29,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:29,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-28 03:18:29,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:29,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:29,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:29,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-28 03:18:29,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:29,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-28 03:18:29,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:29,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-28 03:18:29,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:29,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-28 03:18:29,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:29,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-28 03:18:29,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:29,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:29,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:29,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:29,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:29,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:18:29,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:29,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-28 03:18:29,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:29,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-28 03:18:29,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:29,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-28 03:18:29,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:29,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-28 03:18:29,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:29,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:29,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:29,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:18:29,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:29,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-28 03:18:29,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:29,728 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2021-12-28 03:18:29,729 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:18:29,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420775868] [2021-12-28 03:18:29,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420775868] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:18:29,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303099652] [2021-12-28 03:18:29,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:18:29,730 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:18:29,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:18:29,744 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) [2021-12-28 03:18:29,745 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-28 03:18:30,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:30,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 2596 conjuncts, 32 conjunts are in the unsatisfiable core [2021-12-28 03:18:30,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:18:30,489 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-28 03:18:30,856 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2021-12-28 03:18:30,856 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:18:30,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [303099652] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:18:30,856 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:18:30,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [15] total 23 [2021-12-28 03:18:30,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484739661] [2021-12-28 03:18:30,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:18:30,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-28 03:18:30,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:18:30,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-28 03:18:30,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=436, Unknown=0, NotChecked=0, Total=506 [2021-12-28 03:18:30,858 INFO L87 Difference]: Start difference. First operand 166 states and 213 transitions. Second operand has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 9 states have internal predecessors, (85), 4 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2021-12-28 03:18:30,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:18:30,932 INFO L93 Difference]: Finished difference Result 315 states and 404 transitions. [2021-12-28 03:18:30,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-28 03:18:30,933 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 9 states have internal predecessors, (85), 4 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) Word has length 167 [2021-12-28 03:18:30,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:18:30,936 INFO L225 Difference]: With dead ends: 315 [2021-12-28 03:18:30,936 INFO L226 Difference]: Without dead ends: 170 [2021-12-28 03:18:30,937 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=475, Unknown=0, NotChecked=0, Total=552 [2021-12-28 03:18:30,939 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 24 mSDsluCounter, 913 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 1113 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 33 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:18:30,939 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 1113 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 33 Unchecked, 0.1s Time] [2021-12-28 03:18:30,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-12-28 03:18:30,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2021-12-28 03:18:30,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 109 states have (on average 1.2110091743119267) internal successors, (132), 109 states have internal predecessors, (132), 43 states have call successors, (43), 17 states have call predecessors, (43), 17 states have return successors, (43), 43 states have call predecessors, (43), 42 states have call successors, (43) [2021-12-28 03:18:30,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 218 transitions. [2021-12-28 03:18:30,952 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 218 transitions. Word has length 167 [2021-12-28 03:18:30,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:18:30,952 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 218 transitions. [2021-12-28 03:18:30,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 9 states have internal predecessors, (85), 4 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2021-12-28 03:18:30,952 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 218 transitions. [2021-12-28 03:18:30,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-12-28 03:18:30,954 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:18:30,954 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:18:30,981 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-28 03:18:31,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:18:31,174 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:18:31,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:18:31,174 INFO L85 PathProgramCache]: Analyzing trace with hash -440861128, now seen corresponding path program 1 times [2021-12-28 03:18:31,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:18:31,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265907445] [2021-12-28 03:18:31,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:18:31,175 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:18:31,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:31,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:18:31,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:31,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:18:31,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:31,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:18:31,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:31,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-28 03:18:31,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:31,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-28 03:18:31,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:31,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:31,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:31,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:31,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:31,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:18:31,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:31,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-28 03:18:31,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:31,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-28 03:18:31,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:31,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:31,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:31,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-28 03:18:31,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:31,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-28 03:18:31,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:31,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-28 03:18:31,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:31,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-28 03:18:31,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:31,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-28 03:18:31,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:31,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:31,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:31,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:31,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:31,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:18:31,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:31,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-28 03:18:31,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:31,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-28 03:18:31,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:31,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-28 03:18:31,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:31,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-28 03:18:31,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:31,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:31,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:31,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:18:31,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:31,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-28 03:18:31,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:31,540 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2021-12-28 03:18:31,541 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:18:31,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265907445] [2021-12-28 03:18:31,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265907445] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:18:31,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1251210716] [2021-12-28 03:18:31,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:18:31,541 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:18:31,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:18:31,542 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) [2021-12-28 03:18:31,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-28 03:18:31,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:31,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 2591 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-28 03:18:31,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:18:32,256 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2021-12-28 03:18:32,256 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:18:32,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1251210716] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:18:32,256 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:18:32,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2021-12-28 03:18:32,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983274802] [2021-12-28 03:18:32,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:18:32,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 03:18:32,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:18:32,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 03:18:32,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-12-28 03:18:32,258 INFO L87 Difference]: Start difference. First operand 170 states and 218 transitions. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-12-28 03:18:32,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:18:32,380 INFO L93 Difference]: Finished difference Result 319 states and 412 transitions. [2021-12-28 03:18:32,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 03:18:32,381 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 167 [2021-12-28 03:18:32,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:18:32,382 INFO L225 Difference]: With dead ends: 319 [2021-12-28 03:18:32,382 INFO L226 Difference]: Without dead ends: 177 [2021-12-28 03:18:32,383 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2021-12-28 03:18:32,383 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 213 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 682 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:18:32,383 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [213 Valid, 682 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 03:18:32,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-12-28 03:18:32,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2021-12-28 03:18:32,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 114 states have (on average 1.2105263157894737) internal successors, (138), 115 states have internal predecessors, (138), 44 states have call successors, (44), 17 states have call predecessors, (44), 18 states have return successors, (46), 44 states have call predecessors, (46), 43 states have call successors, (46) [2021-12-28 03:18:32,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 228 transitions. [2021-12-28 03:18:32,405 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 228 transitions. Word has length 167 [2021-12-28 03:18:32,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:18:32,405 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 228 transitions. [2021-12-28 03:18:32,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-12-28 03:18:32,406 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 228 transitions. [2021-12-28 03:18:32,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-12-28 03:18:32,407 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:18:32,407 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:18:32,430 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-28 03:18:32,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:18:32,624 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:18:32,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:18:32,624 INFO L85 PathProgramCache]: Analyzing trace with hash -529280984, now seen corresponding path program 1 times [2021-12-28 03:18:32,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:18:32,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147108042] [2021-12-28 03:18:32,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:18:32,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:18:32,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:32,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:18:32,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:32,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:18:32,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:32,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:18:32,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:32,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-28 03:18:32,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:32,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-28 03:18:32,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:32,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:32,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:32,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:32,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:32,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:18:32,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:32,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-28 03:18:32,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:32,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-28 03:18:32,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:32,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:32,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:32,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-28 03:18:32,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:32,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 03:18:32,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:32,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-28 03:18:32,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:32,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-28 03:18:32,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:32,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-28 03:18:32,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:32,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-28 03:18:32,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:32,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:32,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:32,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:32,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:32,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:18:32,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:32,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-28 03:18:32,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:32,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-28 03:18:32,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:32,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-28 03:18:32,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:32,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-28 03:18:32,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:32,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:32,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:32,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:18:32,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:32,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-28 03:18:32,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:32,954 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2021-12-28 03:18:32,954 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:18:32,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147108042] [2021-12-28 03:18:32,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147108042] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:18:32,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697487013] [2021-12-28 03:18:32,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:18:32,955 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:18:32,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:18:32,956 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) [2021-12-28 03:18:32,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-28 03:18:33,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:33,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 2620 conjuncts, 23 conjunts are in the unsatisfiable core [2021-12-28 03:18:33,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:18:34,376 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((aws_hash_table_is_valid_~map.base Int) (aws_hash_table_is_valid_~map.offset Int)) (not (= 0 (select (select |c_#memory_$Pointer$.offset| aws_hash_table_is_valid_~map.base) aws_hash_table_is_valid_~map.offset)))) (exists ((aws_hash_table_is_valid_~map.base Int) (aws_hash_table_is_valid_~map.offset Int)) (not (= (select (select |c_#memory_$Pointer$.base| aws_hash_table_is_valid_~map.base) aws_hash_table_is_valid_~map.offset) 0)))) is different from true [2021-12-28 03:18:40,396 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2021-12-28 03:18:40,396 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:18:40,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1697487013] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:18:40,396 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:18:40,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2021-12-28 03:18:40,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521694598] [2021-12-28 03:18:40,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:18:40,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-28 03:18:40,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:18:40,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-28 03:18:40,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=202, Unknown=3, NotChecked=28, Total=272 [2021-12-28 03:18:40,397 INFO L87 Difference]: Start difference. First operand 177 states and 228 transitions. Second operand has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (27), 2 states have call predecessors, (27), 3 states have call successors, (27) [2021-12-28 03:18:40,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:18:40,572 INFO L93 Difference]: Finished difference Result 331 states and 437 transitions. [2021-12-28 03:18:40,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-28 03:18:40,573 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (27), 2 states have call predecessors, (27), 3 states have call successors, (27) Word has length 173 [2021-12-28 03:18:40,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:18:40,574 INFO L225 Difference]: With dead ends: 331 [2021-12-28 03:18:40,574 INFO L226 Difference]: Without dead ends: 180 [2021-12-28 03:18:40,574 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=54, Invalid=253, Unknown=3, NotChecked=32, Total=342 [2021-12-28 03:18:40,575 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 5 mSDsluCounter, 917 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 1122 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 298 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:18:40,575 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 1122 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 298 Unchecked, 0.1s Time] [2021-12-28 03:18:40,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-12-28 03:18:40,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 179. [2021-12-28 03:18:40,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 116 states have (on average 1.206896551724138) internal successors, (140), 116 states have internal predecessors, (140), 44 states have call successors, (44), 18 states have call predecessors, (44), 18 states have return successors, (46), 44 states have call predecessors, (46), 43 states have call successors, (46) [2021-12-28 03:18:40,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 230 transitions. [2021-12-28 03:18:40,582 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 230 transitions. Word has length 173 [2021-12-28 03:18:40,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:18:40,583 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 230 transitions. [2021-12-28 03:18:40,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (27), 2 states have call predecessors, (27), 3 states have call successors, (27) [2021-12-28 03:18:40,583 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 230 transitions. [2021-12-28 03:18:40,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-28 03:18:40,584 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:18:40,584 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:18:40,605 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-28 03:18:40,805 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,SelfDestructingSolverStorable7 [2021-12-28 03:18:40,805 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:18:40,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:18:40,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1330201512, now seen corresponding path program 1 times [2021-12-28 03:18:40,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:18:40,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337088999] [2021-12-28 03:18:40,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:18:40,806 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:18:40,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:41,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:18:41,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:41,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:18:41,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:41,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:18:41,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:41,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-28 03:18:41,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:41,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-28 03:18:41,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:41,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:41,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:41,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:41,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:41,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:18:41,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:41,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-28 03:18:41,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:41,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-28 03:18:41,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:41,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:41,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:41,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-28 03:18:41,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:41,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 03:18:41,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:41,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:18:41,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:41,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-28 03:18:41,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:41,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-28 03:18:41,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:41,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-28 03:18:41,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:41,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-28 03:18:41,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:41,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:41,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:41,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:41,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:41,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:18:41,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:41,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-28 03:18:41,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:41,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-28 03:18:41,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:41,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-28 03:18:41,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:41,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-28 03:18:41,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:41,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:41,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:41,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:18:41,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:41,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-28 03:18:41,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:41,546 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2021-12-28 03:18:41,547 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:18:41,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337088999] [2021-12-28 03:18:41,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337088999] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:18:41,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2000558931] [2021-12-28 03:18:41,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:18:41,547 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:18:41,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:18:41,548 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) [2021-12-28 03:18:41,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-28 03:18:41,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:41,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 2650 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-28 03:18:41,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:18:42,159 INFO L387 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 [2021-12-28 03:18:42,533 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 133 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2021-12-28 03:18:42,533 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:18:42,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2000558931] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:18:42,533 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:18:42,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [15] total 22 [2021-12-28 03:18:42,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196438273] [2021-12-28 03:18:42,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:18:42,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-28 03:18:42,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:18:42,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-28 03:18:42,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=409, Unknown=0, NotChecked=0, Total=462 [2021-12-28 03:18:42,535 INFO L87 Difference]: Start difference. First operand 179 states and 230 transitions. Second operand has 9 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 4 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (28), 3 states have call predecessors, (28), 4 states have call successors, (28) [2021-12-28 03:18:42,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:18:42,707 INFO L93 Difference]: Finished difference Result 359 states and 455 transitions. [2021-12-28 03:18:42,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 03:18:42,707 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 4 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (28), 3 states have call predecessors, (28), 4 states have call successors, (28) Word has length 178 [2021-12-28 03:18:42,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:18:42,708 INFO L225 Difference]: With dead ends: 359 [2021-12-28 03:18:42,709 INFO L226 Difference]: Without dead ends: 209 [2021-12-28 03:18:42,709 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=79, Invalid=571, Unknown=0, NotChecked=0, Total=650 [2021-12-28 03:18:42,711 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 178 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 55 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:18:42,711 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [181 Valid, 542 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 33 Invalid, 0 Unknown, 55 Unchecked, 0.1s Time] [2021-12-28 03:18:42,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2021-12-28 03:18:42,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 205. [2021-12-28 03:18:42,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 136 states have (on average 1.2058823529411764) internal successors, (164), 135 states have internal predecessors, (164), 47 states have call successors, (47), 23 states have call predecessors, (47), 21 states have return successors, (48), 46 states have call predecessors, (48), 46 states have call successors, (48) [2021-12-28 03:18:42,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 259 transitions. [2021-12-28 03:18:42,720 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 259 transitions. Word has length 178 [2021-12-28 03:18:42,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:18:42,721 INFO L470 AbstractCegarLoop]: Abstraction has 205 states and 259 transitions. [2021-12-28 03:18:42,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 4 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (28), 3 states have call predecessors, (28), 4 states have call successors, (28) [2021-12-28 03:18:42,721 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 259 transitions. [2021-12-28 03:18:42,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-12-28 03:18:42,722 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:18:42,722 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:18:42,750 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-28 03:18:42,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:18:42,937 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:18:42,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:18:42,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1571474099, now seen corresponding path program 1 times [2021-12-28 03:18:42,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:18:42,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667364571] [2021-12-28 03:18:42,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:18:42,938 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:18:43,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:43,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:18:43,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:43,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:18:43,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:43,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:18:43,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:43,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-28 03:18:43,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:43,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-28 03:18:43,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:43,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:43,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:43,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:43,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:43,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:18:43,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:43,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-28 03:18:43,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:43,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-28 03:18:43,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:43,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:43,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:43,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-28 03:18:43,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:43,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 03:18:43,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:43,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:18:43,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:43,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-28 03:18:43,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:43,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-28 03:18:43,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:43,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:18:43,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:43,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-28 03:18:43,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:43,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-28 03:18:43,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:43,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:43,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:43,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:43,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:43,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:18:43,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:43,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-28 03:18:43,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:43,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-28 03:18:43,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:43,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-28 03:18:43,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:43,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-28 03:18:43,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:43,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:43,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:43,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:18:43,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:43,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-28 03:18:43,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:43,668 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 16 proven. 12 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2021-12-28 03:18:43,669 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:18:43,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667364571] [2021-12-28 03:18:43,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667364571] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:18:43,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863246088] [2021-12-28 03:18:43,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:18:43,669 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:18:43,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:18:43,670 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) [2021-12-28 03:18:43,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-28 03:18:44,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:44,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 2677 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-28 03:18:44,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:18:44,467 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2021-12-28 03:18:44,467 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:18:44,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863246088] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:18:44,468 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:18:44,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [18] total 25 [2021-12-28 03:18:44,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139124723] [2021-12-28 03:18:44,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:18:44,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-28 03:18:44,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:18:44,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-28 03:18:44,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=546, Unknown=0, NotChecked=0, Total=600 [2021-12-28 03:18:44,469 INFO L87 Difference]: Start difference. First operand 205 states and 259 transitions. Second operand has 9 states, 8 states have (on average 12.625) internal successors, (101), 7 states have internal predecessors, (101), 3 states have call successors, (31), 2 states have call predecessors, (31), 5 states have return successors, (29), 4 states have call predecessors, (29), 3 states have call successors, (29) [2021-12-28 03:18:44,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:18:44,585 INFO L93 Difference]: Finished difference Result 389 states and 501 transitions. [2021-12-28 03:18:44,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 03:18:44,586 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 12.625) internal successors, (101), 7 states have internal predecessors, (101), 3 states have call successors, (31), 2 states have call predecessors, (31), 5 states have return successors, (29), 4 states have call predecessors, (29), 3 states have call successors, (29) Word has length 187 [2021-12-28 03:18:44,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:18:44,587 INFO L225 Difference]: With dead ends: 389 [2021-12-28 03:18:44,587 INFO L226 Difference]: Without dead ends: 217 [2021-12-28 03:18:44,588 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2021-12-28 03:18:44,588 INFO L933 BasicCegarLoop]: 194 mSDtfsCounter, 2 mSDsluCounter, 1319 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1513 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:18:44,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1513 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 03:18:44,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-12-28 03:18:44,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 214. [2021-12-28 03:18:44,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 142 states have (on average 1.1971830985915493) internal successors, (170), 143 states have internal predecessors, (170), 47 states have call successors, (47), 23 states have call predecessors, (47), 24 states have return successors, (55), 47 states have call predecessors, (55), 46 states have call successors, (55) [2021-12-28 03:18:44,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 272 transitions. [2021-12-28 03:18:44,601 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 272 transitions. Word has length 187 [2021-12-28 03:18:44,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:18:44,601 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 272 transitions. [2021-12-28 03:18:44,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 12.625) internal successors, (101), 7 states have internal predecessors, (101), 3 states have call successors, (31), 2 states have call predecessors, (31), 5 states have return successors, (29), 4 states have call predecessors, (29), 3 states have call successors, (29) [2021-12-28 03:18:44,602 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 272 transitions. [2021-12-28 03:18:44,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-12-28 03:18:44,603 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:18:44,603 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:18:44,641 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-28 03:18:44,824 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,SelfDestructingSolverStorable9 [2021-12-28 03:18:44,825 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:18:44,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:18:44,825 INFO L85 PathProgramCache]: Analyzing trace with hash -798306709, now seen corresponding path program 1 times [2021-12-28 03:18:44,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:18:44,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463077240] [2021-12-28 03:18:44,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:18:44,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:18:44,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:44,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:18:44,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:44,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:18:44,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:44,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:18:44,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:44,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-28 03:18:44,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:44,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-28 03:18:44,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:44,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:44,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:44,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:44,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:44,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:18:44,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:44,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-28 03:18:44,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:44,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-28 03:18:44,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:44,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:44,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:45,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-28 03:18:45,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:45,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 03:18:45,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:45,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:18:45,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:45,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-28 03:18:45,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:45,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-28 03:18:45,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:45,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:18:45,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:45,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 03:18:45,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:45,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-28 03:18:45,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:45,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-28 03:18:45,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:45,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:45,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:45,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:45,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:45,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:18:45,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:45,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-28 03:18:45,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:45,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-28 03:18:45,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:45,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-28 03:18:45,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:45,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-12-28 03:18:45,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:45,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:45,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:45,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:18:45,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:45,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-28 03:18:45,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:45,160 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2021-12-28 03:18:45,160 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:18:45,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463077240] [2021-12-28 03:18:45,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463077240] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:18:45,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2081653721] [2021-12-28 03:18:45,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:18:45,161 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:18:45,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:18:45,162 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) [2021-12-28 03:18:45,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-28 03:18:45,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:45,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 2712 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-28 03:18:45,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:18:45,858 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-12-28 03:18:45,858 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:18:45,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2081653721] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:18:45,859 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:18:45,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 8 [2021-12-28 03:18:45,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831617784] [2021-12-28 03:18:45,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:18:45,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 03:18:45,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:18:45,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 03:18:45,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-28 03:18:45,860 INFO L87 Difference]: Start difference. First operand 214 states and 272 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-12-28 03:18:45,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:18:45,881 INFO L93 Difference]: Finished difference Result 388 states and 503 transitions. [2021-12-28 03:18:45,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 03:18:45,881 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 195 [2021-12-28 03:18:45,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:18:45,882 INFO L225 Difference]: With dead ends: 388 [2021-12-28 03:18:45,883 INFO L226 Difference]: Without dead ends: 208 [2021-12-28 03:18:45,883 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-12-28 03:18:45,884 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 3 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 03:18:45,884 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 609 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 03:18:45,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-12-28 03:18:45,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 207. [2021-12-28 03:18:45,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 137 states have (on average 1.1751824817518248) internal successors, (161), 139 states have internal predecessors, (161), 45 states have call successors, (45), 21 states have call predecessors, (45), 24 states have return successors, (53), 46 states have call predecessors, (53), 44 states have call successors, (53) [2021-12-28 03:18:45,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 259 transitions. [2021-12-28 03:18:45,891 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 259 transitions. Word has length 195 [2021-12-28 03:18:45,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:18:45,892 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 259 transitions. [2021-12-28 03:18:45,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-12-28 03:18:45,892 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 259 transitions. [2021-12-28 03:18:45,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-12-28 03:18:45,893 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:18:45,893 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:18:45,917 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-28 03:18:46,107 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,SelfDestructingSolverStorable10 [2021-12-28 03:18:46,107 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:18:46,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:18:46,107 INFO L85 PathProgramCache]: Analyzing trace with hash -715385865, now seen corresponding path program 1 times [2021-12-28 03:18:46,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:18:46,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825142112] [2021-12-28 03:18:46,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:18:46,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:18:46,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:46,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:18:46,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:46,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:18:46,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:46,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:18:46,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:46,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-28 03:18:46,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:46,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-28 03:18:46,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:46,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:46,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:46,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:46,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:46,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:18:46,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:46,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-28 03:18:46,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:46,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-28 03:18:46,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:46,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:46,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:46,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-28 03:18:46,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:46,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 03:18:46,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:46,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:18:46,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:46,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-28 03:18:46,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:46,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-28 03:18:46,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:46,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:18:46,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:46,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 03:18:46,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:46,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:18:46,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:46,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-28 03:18:46,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:46,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-28 03:18:46,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:46,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:46,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:46,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:46,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:46,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:18:46,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:46,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-28 03:18:46,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:46,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-28 03:18:46,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:46,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-28 03:18:46,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:46,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-12-28 03:18:46,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:46,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:46,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:46,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:18:46,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:46,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-28 03:18:46,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:46,738 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 16 proven. 14 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2021-12-28 03:18:46,739 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:18:46,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825142112] [2021-12-28 03:18:46,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825142112] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:18:46,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124080446] [2021-12-28 03:18:46,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:18:46,740 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:18:46,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:18:46,744 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) [2021-12-28 03:18:46,745 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-28 03:18:47,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:47,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 2747 conjuncts, 60 conjunts are in the unsatisfiable core [2021-12-28 03:18:47,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:18:47,360 INFO L387 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 [2021-12-28 03:18:47,363 INFO L387 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 [2021-12-28 03:18:47,682 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-28 03:18:47,683 INFO L387 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 15 treesize of output 7 [2021-12-28 03:18:48,169 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 173 proven. 5 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-12-28 03:18:48,169 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:18:48,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1124080446] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:18:48,416 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-28 03:18:48,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 32 [2021-12-28 03:18:48,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16177569] [2021-12-28 03:18:48,417 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-28 03:18:48,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-12-28 03:18:48,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:18:48,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-12-28 03:18:48,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=1084, Unknown=0, NotChecked=0, Total=1190 [2021-12-28 03:18:48,419 INFO L87 Difference]: Start difference. First operand 207 states and 259 transitions. Second operand has 32 states, 28 states have (on average 5.285714285714286) internal successors, (148), 25 states have internal predecessors, (148), 14 states have call successors, (55), 11 states have call predecessors, (55), 10 states have return successors, (45), 11 states have call predecessors, (45), 14 states have call successors, (45) [2021-12-28 03:18:50,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:18:50,177 INFO L93 Difference]: Finished difference Result 411 states and 519 transitions. [2021-12-28 03:18:50,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-12-28 03:18:50,177 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 28 states have (on average 5.285714285714286) internal successors, (148), 25 states have internal predecessors, (148), 14 states have call successors, (55), 11 states have call predecessors, (55), 10 states have return successors, (45), 11 states have call predecessors, (45), 14 states have call successors, (45) Word has length 200 [2021-12-28 03:18:50,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:18:50,179 INFO L225 Difference]: With dead ends: 411 [2021-12-28 03:18:50,179 INFO L226 Difference]: Without dead ends: 278 [2021-12-28 03:18:50,180 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 306 SyntacticMatches, 4 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 675 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=318, Invalid=2544, Unknown=0, NotChecked=0, Total=2862 [2021-12-28 03:18:50,180 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 196 mSDsluCounter, 1988 mSDsCounter, 0 mSdLazyCounter, 2108 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 2193 SdHoareTripleChecker+Invalid, 3430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 2108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1185 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-28 03:18:50,181 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 2193 Invalid, 3430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 2108 Invalid, 0 Unknown, 1185 Unchecked, 1.2s Time] [2021-12-28 03:18:50,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2021-12-28 03:18:50,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 263. [2021-12-28 03:18:50,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 178 states have (on average 1.1685393258426966) internal successors, (208), 183 states have internal predecessors, (208), 52 states have call successors, (52), 27 states have call predecessors, (52), 32 states have return successors, (70), 52 states have call predecessors, (70), 51 states have call successors, (70) [2021-12-28 03:18:50,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 330 transitions. [2021-12-28 03:18:50,199 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 330 transitions. Word has length 200 [2021-12-28 03:18:50,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:18:50,201 INFO L470 AbstractCegarLoop]: Abstraction has 263 states and 330 transitions. [2021-12-28 03:18:50,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 28 states have (on average 5.285714285714286) internal successors, (148), 25 states have internal predecessors, (148), 14 states have call successors, (55), 11 states have call predecessors, (55), 10 states have return successors, (45), 11 states have call predecessors, (45), 14 states have call successors, (45) [2021-12-28 03:18:50,202 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 330 transitions. [2021-12-28 03:18:50,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-12-28 03:18:50,203 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:18:50,204 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:18:50,225 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-12-28 03:18:50,423 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,SelfDestructingSolverStorable11 [2021-12-28 03:18:50,424 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:18:50,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:18:50,424 INFO L85 PathProgramCache]: Analyzing trace with hash 39081338, now seen corresponding path program 1 times [2021-12-28 03:18:50,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:18:50,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104888269] [2021-12-28 03:18:50,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:18:50,425 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:18:50,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:50,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:18:50,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:50,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:18:50,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:50,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:18:50,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:50,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-28 03:18:50,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:50,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-28 03:18:50,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:50,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:50,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:50,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:50,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:50,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:18:50,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:50,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-28 03:18:50,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:50,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-28 03:18:50,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:50,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:50,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:50,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-28 03:18:50,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:50,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 03:18:50,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:50,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:18:50,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:50,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-28 03:18:50,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:50,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-28 03:18:50,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:50,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:18:50,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:50,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 03:18:50,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:50,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:18:50,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:50,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-28 03:18:50,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:50,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-28 03:18:50,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:50,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:50,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:51,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:51,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:51,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:18:51,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:51,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-28 03:18:51,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:51,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-28 03:18:51,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:51,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:18:51,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:51,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-12-28 03:18:51,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:51,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-12-28 03:18:51,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:51,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:51,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:51,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:18:51,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:51,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-28 03:18:51,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:51,233 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 26 proven. 21 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2021-12-28 03:18:51,233 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:18:51,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104888269] [2021-12-28 03:18:51,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104888269] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:18:51,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1728446139] [2021-12-28 03:18:51,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:18:51,234 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:18:51,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:18:51,252 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) [2021-12-28 03:18:51,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-28 03:18:51,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:51,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 2774 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-28 03:18:51,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:18:52,342 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2021-12-28 03:18:52,342 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:18:52,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1728446139] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:18:52,344 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:18:52,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [23] total 30 [2021-12-28 03:18:52,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513439940] [2021-12-28 03:18:52,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:18:52,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-28 03:18:52,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:18:52,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-28 03:18:52,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=801, Unknown=0, NotChecked=0, Total=870 [2021-12-28 03:18:52,348 INFO L87 Difference]: Start difference. First operand 263 states and 330 transitions. Second operand has 9 states, 8 states have (on average 10.875) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (28), 2 states have call predecessors, (28), 5 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) [2021-12-28 03:18:52,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:18:52,492 INFO L93 Difference]: Finished difference Result 383 states and 484 transitions. [2021-12-28 03:18:52,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 03:18:52,493 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.875) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (28), 2 states have call predecessors, (28), 5 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) Word has length 209 [2021-12-28 03:18:52,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:18:52,495 INFO L225 Difference]: With dead ends: 383 [2021-12-28 03:18:52,495 INFO L226 Difference]: Without dead ends: 263 [2021-12-28 03:18:52,495 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=857, Unknown=0, NotChecked=0, Total=930 [2021-12-28 03:18:52,496 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 2 mSDsluCounter, 1325 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1520 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:18:52,496 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1520 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 03:18:52,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2021-12-28 03:18:52,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 261. [2021-12-28 03:18:52,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 177 states have (on average 1.1694915254237288) internal successors, (207), 181 states have internal predecessors, (207), 52 states have call successors, (52), 27 states have call predecessors, (52), 31 states have return successors, (64), 52 states have call predecessors, (64), 51 states have call successors, (64) [2021-12-28 03:18:52,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 323 transitions. [2021-12-28 03:18:52,510 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 323 transitions. Word has length 209 [2021-12-28 03:18:52,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:18:52,511 INFO L470 AbstractCegarLoop]: Abstraction has 261 states and 323 transitions. [2021-12-28 03:18:52,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.875) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (28), 2 states have call predecessors, (28), 5 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) [2021-12-28 03:18:52,511 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 323 transitions. [2021-12-28 03:18:52,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2021-12-28 03:18:52,513 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:18:52,513 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:18:52,538 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-12-28 03:18:52,736 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,SelfDestructingSolverStorable12 [2021-12-28 03:18:52,736 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:18:52,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:18:52,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1531477198, now seen corresponding path program 1 times [2021-12-28 03:18:52,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:18:52,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584854138] [2021-12-28 03:18:52,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:18:52,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:18:52,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:52,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:18:52,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:52,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:18:52,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:52,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:18:52,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:52,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-28 03:18:52,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:52,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-28 03:18:52,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:52,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:52,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:52,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:52,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:52,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:18:52,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:52,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-28 03:18:52,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:52,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-28 03:18:52,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:52,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:52,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:52,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-28 03:18:52,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:52,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 03:18:52,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:52,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:18:52,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:52,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-28 03:18:52,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:52,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-28 03:18:52,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:52,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:18:52,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:52,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 03:18:52,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:52,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:18:52,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:52,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-28 03:18:52,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:52,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-28 03:18:52,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:53,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:53,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:53,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:53,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:53,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:18:53,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:53,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-28 03:18:53,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:53,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:53,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:53,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-28 03:18:53,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:53,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-12-28 03:18:53,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:53,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:18:53,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:53,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 03:18:53,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:53,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:18:53,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:53,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-12-28 03:18:53,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:53,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2021-12-28 03:18:53,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:53,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:53,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:53,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:18:53,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:53,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-28 03:18:53,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:53,144 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2021-12-28 03:18:53,144 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:18:53,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584854138] [2021-12-28 03:18:53,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584854138] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:18:53,144 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:18:53,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-28 03:18:53,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623921455] [2021-12-28 03:18:53,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:18:53,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-28 03:18:53,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:18:53,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-28 03:18:53,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-12-28 03:18:53,145 INFO L87 Difference]: Start difference. First operand 261 states and 323 transitions. Second operand has 9 states, 9 states have (on average 9.0) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (30), 6 states have call predecessors, (30), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) [2021-12-28 03:18:53,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:18:53,743 INFO L93 Difference]: Finished difference Result 516 states and 640 transitions. [2021-12-28 03:18:53,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-28 03:18:53,743 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (30), 6 states have call predecessors, (30), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) Word has length 234 [2021-12-28 03:18:53,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:18:53,744 INFO L225 Difference]: With dead ends: 516 [2021-12-28 03:18:53,745 INFO L226 Difference]: Without dead ends: 267 [2021-12-28 03:18:53,745 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2021-12-28 03:18:53,746 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 232 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 636 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-28 03:18:53,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [241 Valid, 519 Invalid, 819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 636 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-28 03:18:53,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2021-12-28 03:18:53,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 263. [2021-12-28 03:18:53,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 179 states have (on average 1.1675977653631284) internal successors, (209), 182 states have internal predecessors, (209), 52 states have call successors, (52), 27 states have call predecessors, (52), 31 states have return successors, (64), 53 states have call predecessors, (64), 51 states have call successors, (64) [2021-12-28 03:18:53,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 325 transitions. [2021-12-28 03:18:53,757 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 325 transitions. Word has length 234 [2021-12-28 03:18:53,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:18:53,757 INFO L470 AbstractCegarLoop]: Abstraction has 263 states and 325 transitions. [2021-12-28 03:18:53,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (30), 6 states have call predecessors, (30), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) [2021-12-28 03:18:53,757 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 325 transitions. [2021-12-28 03:18:53,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2021-12-28 03:18:53,758 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:18:53,759 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:18:53,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-28 03:18:53,759 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:18:53,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:18:53,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1909848278, now seen corresponding path program 1 times [2021-12-28 03:18:53,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:18:53,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308458761] [2021-12-28 03:18:53,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:18:53,760 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:18:53,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:53,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:18:53,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:53,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:18:53,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:53,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:18:53,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:53,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-28 03:18:53,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:53,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-28 03:18:53,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:53,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:53,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:53,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:53,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:53,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:18:53,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:53,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-28 03:18:53,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:53,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-28 03:18:53,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:53,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:53,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:53,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-28 03:18:54,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:54,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 03:18:54,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:54,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:18:54,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:54,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-28 03:18:54,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:54,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-28 03:18:54,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:54,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:18:54,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:54,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 03:18:54,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:54,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:18:54,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:54,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-28 03:18:54,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:54,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-28 03:18:54,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:54,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:54,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:54,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:54,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:54,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:18:54,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:54,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-28 03:18:54,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:54,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-28 03:18:54,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:54,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:18:54,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:54,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 03:18:54,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:54,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:18:54,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:54,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2021-12-28 03:18:54,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:54,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-12-28 03:18:54,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:54,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:54,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:54,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:18:54,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:54,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-28 03:18:54,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:54,792 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 32 proven. 21 refuted. 0 times theorem prover too weak. 241 trivial. 0 not checked. [2021-12-28 03:18:54,793 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:18:54,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308458761] [2021-12-28 03:18:54,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308458761] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:18:54,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49999133] [2021-12-28 03:18:54,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:18:54,794 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:18:54,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:18:54,795 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) [2021-12-28 03:18:54,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-28 03:18:55,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:55,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 2844 conjuncts, 26 conjunts are in the unsatisfiable core [2021-12-28 03:18:55,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:18:55,936 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 24 proven. 170 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-12-28 03:18:55,936 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:18:56,559 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2021-12-28 03:18:56,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [49999133] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-28 03:18:56,559 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-12-28 03:18:56,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [25, 12] total 40 [2021-12-28 03:18:56,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317422060] [2021-12-28 03:18:56,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:18:56,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-28 03:18:56,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:18:56,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-28 03:18:56,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=1459, Unknown=0, NotChecked=0, Total=1560 [2021-12-28 03:18:56,561 INFO L87 Difference]: Start difference. First operand 263 states and 325 transitions. Second operand has 9 states, 8 states have (on average 9.5) internal successors, (76), 7 states have internal predecessors, (76), 3 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26) [2021-12-28 03:18:56,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:18:56,649 INFO L93 Difference]: Finished difference Result 370 states and 460 transitions. [2021-12-28 03:18:56,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-28 03:18:56,649 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.5) internal successors, (76), 7 states have internal predecessors, (76), 3 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26) Word has length 222 [2021-12-28 03:18:56,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:18:56,651 INFO L225 Difference]: With dead ends: 370 [2021-12-28 03:18:56,651 INFO L226 Difference]: Without dead ends: 258 [2021-12-28 03:18:56,652 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 529 GetRequests, 491 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=101, Invalid=1459, Unknown=0, NotChecked=0, Total=1560 [2021-12-28 03:18:56,652 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 3 mSDsluCounter, 1139 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1334 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:18:56,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 1334 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 03:18:56,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2021-12-28 03:18:56,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 258. [2021-12-28 03:18:56,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 175 states have (on average 1.16) internal successors, (203), 177 states have internal predecessors, (203), 52 states have call successors, (52), 27 states have call predecessors, (52), 30 states have return successors, (62), 53 states have call predecessors, (62), 51 states have call successors, (62) [2021-12-28 03:18:56,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 317 transitions. [2021-12-28 03:18:56,662 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 317 transitions. Word has length 222 [2021-12-28 03:18:56,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:18:56,663 INFO L470 AbstractCegarLoop]: Abstraction has 258 states and 317 transitions. [2021-12-28 03:18:56,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.5) internal successors, (76), 7 states have internal predecessors, (76), 3 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26) [2021-12-28 03:18:56,663 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 317 transitions. [2021-12-28 03:18:56,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-12-28 03:18:56,664 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:18:56,665 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:18:56,701 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2021-12-28 03:18:56,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:18:56,880 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:18:56,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:18:56,880 INFO L85 PathProgramCache]: Analyzing trace with hash -696080334, now seen corresponding path program 1 times [2021-12-28 03:18:56,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:18:56,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119214305] [2021-12-28 03:18:56,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:18:56,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:18:57,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:57,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:18:57,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:57,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:18:57,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:57,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:18:57,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:57,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-28 03:18:57,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:57,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-28 03:18:57,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:57,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:57,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:57,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:57,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:57,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:18:57,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:57,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-28 03:18:57,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:57,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-28 03:18:57,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:57,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:57,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:57,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-28 03:18:57,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:57,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 03:18:57,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:57,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:18:57,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:57,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-28 03:18:57,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:57,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-28 03:18:57,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:57,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:18:57,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:57,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 03:18:57,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:57,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:18:57,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:57,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-28 03:18:57,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:57,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-28 03:18:57,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:57,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:57,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:57,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:57,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:57,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:18:57,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:57,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-28 03:18:57,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:57,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-28 03:18:57,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:57,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:18:57,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:57,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 03:18:57,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:57,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:18:57,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:57,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2021-12-28 03:18:57,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:57,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-12-28 03:18:57,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:57,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:57,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:57,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:18:57,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:57,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 03:18:57,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:57,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:18:57,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:57,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-28 03:18:57,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:57,687 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 6 proven. 23 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2021-12-28 03:18:57,687 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:18:57,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119214305] [2021-12-28 03:18:57,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119214305] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:18:57,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884089507] [2021-12-28 03:18:57,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:18:57,688 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:18:57,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:18:57,704 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) [2021-12-28 03:18:57,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-28 03:18:58,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:58,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 2898 conjuncts, 23 conjunts are in the unsatisfiable core [2021-12-28 03:18:58,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:18:58,606 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2021-12-28 03:18:58,606 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:18:58,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [884089507] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:18:58,606 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:18:58,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 15 [2021-12-28 03:18:58,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158139534] [2021-12-28 03:18:58,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:18:58,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 03:18:58,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:18:58,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 03:18:58,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2021-12-28 03:18:58,608 INFO L87 Difference]: Start difference. First operand 258 states and 317 transitions. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 6 states have internal predecessors, (92), 3 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2021-12-28 03:18:58,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:18:58,862 INFO L93 Difference]: Finished difference Result 508 states and 623 transitions. [2021-12-28 03:18:58,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 03:18:58,863 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 6 states have internal predecessors, (92), 3 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) Word has length 233 [2021-12-28 03:18:58,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:18:58,864 INFO L225 Difference]: With dead ends: 508 [2021-12-28 03:18:58,864 INFO L226 Difference]: Without dead ends: 262 [2021-12-28 03:18:58,865 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-12-28 03:18:58,865 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 163 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 622 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-28 03:18:58,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 622 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-28 03:18:58,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-12-28 03:18:58,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 262. [2021-12-28 03:18:58,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 177 states have (on average 1.1581920903954803) internal successors, (205), 181 states have internal predecessors, (205), 52 states have call successors, (52), 27 states have call predecessors, (52), 32 states have return successors, (64), 53 states have call predecessors, (64), 51 states have call successors, (64) [2021-12-28 03:18:58,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 321 transitions. [2021-12-28 03:18:58,875 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 321 transitions. Word has length 233 [2021-12-28 03:18:58,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:18:58,876 INFO L470 AbstractCegarLoop]: Abstraction has 262 states and 321 transitions. [2021-12-28 03:18:58,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 6 states have internal predecessors, (92), 3 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2021-12-28 03:18:58,876 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 321 transitions. [2021-12-28 03:18:58,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2021-12-28 03:18:58,877 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:18:58,877 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:18:58,903 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-12-28 03:18:59,099 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,SelfDestructingSolverStorable15 [2021-12-28 03:18:59,099 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:18:59,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:18:59,100 INFO L85 PathProgramCache]: Analyzing trace with hash 883605678, now seen corresponding path program 1 times [2021-12-28 03:18:59,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:18:59,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886953646] [2021-12-28 03:18:59,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:18:59,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:18:59,149 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:18:59,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1802829120] [2021-12-28 03:18:59,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:18:59,150 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:18:59,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:18:59,151 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) [2021-12-28 03:18:59,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-12-28 03:18:59,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:59,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 3112 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-28 03:18:59,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:19:00,120 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 202 proven. 0 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2021-12-28 03:19:00,121 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:19:00,121 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:19:00,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886953646] [2021-12-28 03:19:00,121 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:19:00,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1802829120] [2021-12-28 03:19:00,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1802829120] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:19:00,122 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:19:00,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 03:19:00,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812853444] [2021-12-28 03:19:00,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:19:00,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 03:19:00,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:19:00,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 03:19:00,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 03:19:00,123 INFO L87 Difference]: Start difference. First operand 262 states and 321 transitions. Second operand has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 6 states have internal predecessors, (115), 2 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (34), 4 states have call predecessors, (34), 2 states have call successors, (34) [2021-12-28 03:19:00,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:19:00,154 INFO L93 Difference]: Finished difference Result 507 states and 621 transitions. [2021-12-28 03:19:00,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 03:19:00,159 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 6 states have internal predecessors, (115), 2 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (34), 4 states have call predecessors, (34), 2 states have call successors, (34) Word has length 251 [2021-12-28 03:19:00,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:19:00,161 INFO L225 Difference]: With dead ends: 507 [2021-12-28 03:19:00,161 INFO L226 Difference]: Without dead ends: 257 [2021-12-28 03:19:00,162 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-28 03:19:00,163 INFO L933 BasicCegarLoop]: 207 mSDtfsCounter, 2 mSDsluCounter, 1022 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1229 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 03:19:00,163 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1229 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 03:19:00,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2021-12-28 03:19:00,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 257. [2021-12-28 03:19:00,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 174 states have (on average 1.1494252873563218) internal successors, (200), 177 states have internal predecessors, (200), 51 states have call successors, (51), 27 states have call predecessors, (51), 31 states have return successors, (60), 52 states have call predecessors, (60), 50 states have call successors, (60) [2021-12-28 03:19:00,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 311 transitions. [2021-12-28 03:19:00,176 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 311 transitions. Word has length 251 [2021-12-28 03:19:00,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:19:00,178 INFO L470 AbstractCegarLoop]: Abstraction has 257 states and 311 transitions. [2021-12-28 03:19:00,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 6 states have internal predecessors, (115), 2 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (34), 4 states have call predecessors, (34), 2 states have call successors, (34) [2021-12-28 03:19:00,178 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 311 transitions. [2021-12-28 03:19:00,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2021-12-28 03:19:00,179 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:19:00,180 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:19:00,223 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-12-28 03:19:00,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-12-28 03:19:00,402 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:19:00,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:19:00,402 INFO L85 PathProgramCache]: Analyzing trace with hash -824952845, now seen corresponding path program 1 times [2021-12-28 03:19:00,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:19:00,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936754900] [2021-12-28 03:19:00,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:19:00,403 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:19:00,468 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:19:00,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1153441426] [2021-12-28 03:19:00,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:19:00,469 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:19:00,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:19:00,470 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) [2021-12-28 03:19:00,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-12-28 03:19:01,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:19:01,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 3111 conjuncts, 21 conjunts are in the unsatisfiable core [2021-12-28 03:19:01,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:19:01,366 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 192 proven. 11 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2021-12-28 03:19:01,367 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:19:01,718 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 307 trivial. 0 not checked. [2021-12-28 03:19:01,719 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:19:01,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936754900] [2021-12-28 03:19:01,719 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:19:01,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1153441426] [2021-12-28 03:19:01,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1153441426] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 03:19:01,719 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-28 03:19:01,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-12-28 03:19:01,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896955471] [2021-12-28 03:19:01,720 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-28 03:19:01,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-28 03:19:01,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:19:01,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-28 03:19:01,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-12-28 03:19:01,721 INFO L87 Difference]: Start difference. First operand 257 states and 311 transitions. Second operand has 13 states, 13 states have (on average 9.384615384615385) internal successors, (122), 12 states have internal predecessors, (122), 5 states have call successors, (42), 3 states have call predecessors, (42), 6 states have return successors, (41), 5 states have call predecessors, (41), 5 states have call successors, (41) [2021-12-28 03:19:01,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:19:01,850 INFO L93 Difference]: Finished difference Result 384 states and 471 transitions. [2021-12-28 03:19:01,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-28 03:19:01,850 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.384615384615385) internal successors, (122), 12 states have internal predecessors, (122), 5 states have call successors, (42), 3 states have call predecessors, (42), 6 states have return successors, (41), 5 states have call predecessors, (41), 5 states have call successors, (41) Word has length 251 [2021-12-28 03:19:01,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:19:01,851 INFO L225 Difference]: With dead ends: 384 [2021-12-28 03:19:01,852 INFO L226 Difference]: Without dead ends: 236 [2021-12-28 03:19:01,852 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 501 GetRequests, 488 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-12-28 03:19:01,853 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 5 mSDsluCounter, 1688 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1883 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:19:01,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 1883 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 03:19:01,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2021-12-28 03:19:01,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 229. [2021-12-28 03:19:01,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 154 states have (on average 1.1493506493506493) internal successors, (177), 156 states have internal predecessors, (177), 47 states have call successors, (47), 25 states have call predecessors, (47), 27 states have return successors, (52), 47 states have call predecessors, (52), 46 states have call successors, (52) [2021-12-28 03:19:01,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 276 transitions. [2021-12-28 03:19:01,864 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 276 transitions. Word has length 251 [2021-12-28 03:19:01,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:19:01,864 INFO L470 AbstractCegarLoop]: Abstraction has 229 states and 276 transitions. [2021-12-28 03:19:01,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.384615384615385) internal successors, (122), 12 states have internal predecessors, (122), 5 states have call successors, (42), 3 states have call predecessors, (42), 6 states have return successors, (41), 5 states have call predecessors, (41), 5 states have call successors, (41) [2021-12-28 03:19:01,864 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 276 transitions. [2021-12-28 03:19:01,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2021-12-28 03:19:01,866 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:19:01,866 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:19:01,887 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2021-12-28 03:19:02,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-12-28 03:19:02,087 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:19:02,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:19:02,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1453240668, now seen corresponding path program 1 times [2021-12-28 03:19:02,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:19:02,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613850650] [2021-12-28 03:19:02,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:19:02,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:19:02,127 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:19:02,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1086295468] [2021-12-28 03:19:02,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:19:02,128 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:19:02,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:19:02,144 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) [2021-12-28 03:19:02,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-12-28 03:19:02,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:19:02,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 3108 conjuncts, 31 conjunts are in the unsatisfiable core [2021-12-28 03:19:02,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:19:03,090 INFO L353 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-12-28 03:19:03,091 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2021-12-28 03:19:03,115 INFO L387 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 [2021-12-28 03:19:03,144 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 6 proven. 23 refuted. 0 times theorem prover too weak. 307 trivial. 0 not checked. [2021-12-28 03:19:03,144 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:19:03,237 INFO L387 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 178 treesize of output 166 [2021-12-28 03:19:03,641 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2021-12-28 03:19:03,641 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:19:03,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613850650] [2021-12-28 03:19:03,642 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:19:03,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086295468] [2021-12-28 03:19:03,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1086295468] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-28 03:19:03,642 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:19:03,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 14 [2021-12-28 03:19:03,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306421061] [2021-12-28 03:19:03,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:19:03,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-28 03:19:03,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:19:03,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-28 03:19:03,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-12-28 03:19:03,643 INFO L87 Difference]: Start difference. First operand 229 states and 276 transitions. Second operand has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 3 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 3 states have call predecessors, (27), 2 states have call successors, (27) [2021-12-28 03:19:03,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:19:03,908 INFO L93 Difference]: Finished difference Result 248 states and 300 transitions. [2021-12-28 03:19:03,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-28 03:19:03,908 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 3 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 3 states have call predecessors, (27), 2 states have call successors, (27) Word has length 245 [2021-12-28 03:19:03,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:19:03,910 INFO L225 Difference]: With dead ends: 248 [2021-12-28 03:19:03,910 INFO L226 Difference]: Without dead ends: 246 [2021-12-28 03:19:03,910 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 491 GetRequests, 476 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2021-12-28 03:19:03,911 INFO L933 BasicCegarLoop]: 194 mSDtfsCounter, 19 mSDsluCounter, 1069 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 1263 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-28 03:19:03,911 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 1263 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-28 03:19:03,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2021-12-28 03:19:03,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 238. [2021-12-28 03:19:03,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 160 states have (on average 1.15) internal successors, (184), 163 states have internal predecessors, (184), 48 states have call successors, (48), 26 states have call predecessors, (48), 29 states have return successors, (54), 48 states have call predecessors, (54), 47 states have call successors, (54) [2021-12-28 03:19:03,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 286 transitions. [2021-12-28 03:19:03,919 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 286 transitions. Word has length 245 [2021-12-28 03:19:03,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:19:03,920 INFO L470 AbstractCegarLoop]: Abstraction has 238 states and 286 transitions. [2021-12-28 03:19:03,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 3 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 3 states have call predecessors, (27), 2 states have call successors, (27) [2021-12-28 03:19:03,920 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 286 transitions. [2021-12-28 03:19:03,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2021-12-28 03:19:03,921 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:19:03,921 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:19:03,946 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2021-12-28 03:19:04,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:19:04,144 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:19:04,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:19:04,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1646844524, now seen corresponding path program 1 times [2021-12-28 03:19:04,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:19:04,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599587608] [2021-12-28 03:19:04,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:19:04,145 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:19:04,186 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:19:04,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [636182987] [2021-12-28 03:19:04,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:19:04,190 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:19:04,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:19:04,191 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) [2021-12-28 03:19:04,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-12-28 03:19:04,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:19:04,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 3116 conjuncts, 52 conjunts are in the unsatisfiable core [2021-12-28 03:19:04,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:19:05,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:19:05,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:19:05,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:19:05,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:19:05,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:19:05,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:19:05,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:19:05,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:19:05,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:19:05,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:19:05,307 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 57 [2021-12-28 03:19:05,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:19:05,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:19:05,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:19:05,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:19:05,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:19:05,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:19:05,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:19:05,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:19:05,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:19:05,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:19:05,317 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 57 [2021-12-28 03:19:05,467 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2021-12-28 03:19:05,468 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:19:05,468 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:19:05,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599587608] [2021-12-28 03:19:05,468 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:19:05,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636182987] [2021-12-28 03:19:05,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [636182987] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:19:05,468 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:19:05,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-12-28 03:19:05,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115258552] [2021-12-28 03:19:05,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:19:05,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-28 03:19:05,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:19:05,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-28 03:19:05,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-12-28 03:19:05,469 INFO L87 Difference]: Start difference. First operand 238 states and 286 transitions. Second operand has 15 states, 14 states have (on average 6.071428571428571) internal successors, (85), 13 states have internal predecessors, (85), 8 states have call successors, (31), 5 states have call predecessors, (31), 4 states have return successors, (28), 7 states have call predecessors, (28), 7 states have call successors, (28) [2021-12-28 03:19:05,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:19:05,829 INFO L93 Difference]: Finished difference Result 350 states and 420 transitions. [2021-12-28 03:19:05,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-28 03:19:05,830 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 6.071428571428571) internal successors, (85), 13 states have internal predecessors, (85), 8 states have call successors, (31), 5 states have call predecessors, (31), 4 states have return successors, (28), 7 states have call predecessors, (28), 7 states have call successors, (28) Word has length 247 [2021-12-28 03:19:05,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:19:05,831 INFO L225 Difference]: With dead ends: 350 [2021-12-28 03:19:05,831 INFO L226 Difference]: Without dead ends: 248 [2021-12-28 03:19:05,832 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 231 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2021-12-28 03:19:05,832 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 44 mSDsluCounter, 1878 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 2065 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 156 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-28 03:19:05,832 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 2065 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 200 Invalid, 0 Unknown, 156 Unchecked, 0.3s Time] [2021-12-28 03:19:05,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2021-12-28 03:19:05,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 245. [2021-12-28 03:19:05,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 166 states have (on average 1.144578313253012) internal successors, (190), 168 states have internal predecessors, (190), 48 states have call successors, (48), 28 states have call predecessors, (48), 30 states have return successors, (54), 48 states have call predecessors, (54), 47 states have call successors, (54) [2021-12-28 03:19:05,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 292 transitions. [2021-12-28 03:19:05,848 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 292 transitions. Word has length 247 [2021-12-28 03:19:05,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:19:05,848 INFO L470 AbstractCegarLoop]: Abstraction has 245 states and 292 transitions. [2021-12-28 03:19:05,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 6.071428571428571) internal successors, (85), 13 states have internal predecessors, (85), 8 states have call successors, (31), 5 states have call predecessors, (31), 4 states have return successors, (28), 7 states have call predecessors, (28), 7 states have call successors, (28) [2021-12-28 03:19:05,849 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 292 transitions. [2021-12-28 03:19:05,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2021-12-28 03:19:05,861 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:19:05,862 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:19:05,886 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-12-28 03:19:06,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:19:06,062 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:19:06,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:19:06,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1408230311, now seen corresponding path program 1 times [2021-12-28 03:19:06,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:19:06,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303123959] [2021-12-28 03:19:06,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:19:06,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:19:06,146 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:19:06,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1916977545] [2021-12-28 03:19:06,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:19:06,147 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:19:06,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:19:06,148 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) [2021-12-28 03:19:06,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-12-28 03:19:21,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:19:21,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 3197 conjuncts, 615 conjunts are in the unsatisfiable core [2021-12-28 03:19:21,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:19:21,627 INFO L387 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 [2021-12-28 03:19:22,136 INFO L353 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-28 03:19:22,136 INFO L387 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 17 treesize of output 21 [2021-12-28 03:19:22,197 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-28 03:19:22,398 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-28 03:19:22,525 INFO L387 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 17 treesize of output 9 [2021-12-28 03:19:22,715 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-28 03:19:23,110 INFO L353 Elim1Store]: treesize reduction 173, result has 26.4 percent of original size [2021-12-28 03:19:23,111 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 93 treesize of output 134