./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ntdrivers/kbfiltr.i.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e498ba58-a034-4cf1-ba14-3bb2e299e5e1/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e498ba58-a034-4cf1-ba14-3bb2e299e5e1/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e498ba58-a034-4cf1-ba14-3bb2e299e5e1/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e498ba58-a034-4cf1-ba14-3bb2e299e5e1/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ntdrivers/kbfiltr.i.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e498ba58-a034-4cf1-ba14-3bb2e299e5e1/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e498ba58-a034-4cf1-ba14-3bb2e299e5e1/bin/uautomizer-verify-bycVGegfSx --witnessprinter.witness.filename witness --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 32bit --witnessprinter.graph.data.programhash 791fd4c1f54f973c646b3f11f7eb2f654eca269cacf7e504443ee0d13fbe9694 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 21:03:30,406 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 21:03:30,481 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e498ba58-a034-4cf1-ba14-3bb2e299e5e1/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-21 21:03:30,487 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 21:03:30,487 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 21:03:30,532 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 21:03:30,533 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 21:03:30,533 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 21:03:30,534 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 21:03:30,535 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 21:03:30,535 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 21:03:30,539 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 21:03:30,540 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 21:03:30,545 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 21:03:30,546 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 21:03:30,547 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 21:03:30,549 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 21:03:30,549 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 21:03:30,550 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 21:03:30,551 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 21:03:30,551 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 21:03:30,552 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 21:03:30,552 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 21:03:30,553 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 21:03:30,553 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 21:03:30,553 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 21:03:30,554 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 21:03:30,555 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 21:03:30,555 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 21:03:30,556 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 21:03:30,557 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 21:03:30,558 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 21:03:30,558 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 21:03:30,558 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 21:03:30,559 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 21:03:30,559 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 21:03:30,566 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 21:03:30,567 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 21:03:30,567 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 21:03:30,567 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 21:03:30,568 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 21:03:30,568 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 21:03:30,568 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e498ba58-a034-4cf1-ba14-3bb2e299e5e1/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e498ba58-a034-4cf1-ba14-3bb2e299e5e1/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 791fd4c1f54f973c646b3f11f7eb2f654eca269cacf7e504443ee0d13fbe9694 [2023-11-21 21:03:30,837 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 21:03:30,861 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 21:03:30,864 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 21:03:30,865 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 21:03:30,866 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 21:03:30,867 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e498ba58-a034-4cf1-ba14-3bb2e299e5e1/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/ntdrivers/kbfiltr.i.cil-2.c [2023-11-21 21:03:34,144 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 21:03:34,644 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 21:03:34,645 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e498ba58-a034-4cf1-ba14-3bb2e299e5e1/sv-benchmarks/c/ntdrivers/kbfiltr.i.cil-2.c [2023-11-21 21:03:34,685 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e498ba58-a034-4cf1-ba14-3bb2e299e5e1/bin/uautomizer-verify-bycVGegfSx/data/270a1484d/2b69b60085ac4b348a3f3ea7d4573296/FLAGeb4c59dc0 [2023-11-21 21:03:34,705 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e498ba58-a034-4cf1-ba14-3bb2e299e5e1/bin/uautomizer-verify-bycVGegfSx/data/270a1484d/2b69b60085ac4b348a3f3ea7d4573296 [2023-11-21 21:03:34,710 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 21:03:34,712 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 21:03:34,717 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 21:03:34,717 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 21:03:34,722 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 21:03:34,725 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:03:34" (1/1) ... [2023-11-21 21:03:34,726 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bc680e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:34, skipping insertion in model container [2023-11-21 21:03:34,727 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:03:34" (1/1) ... [2023-11-21 21:03:34,824 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 21:03:35,473 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e498ba58-a034-4cf1-ba14-3bb2e299e5e1/sv-benchmarks/c/ntdrivers/kbfiltr.i.cil-2.c[62209,62222] [2023-11-21 21:03:35,789 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 21:03:35,835 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 21:03:35,846 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma pack(push,8) [16] [2023-11-21 21:03:35,848 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma pack(pop) [17] [2023-11-21 21:03:35,849 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma pack(push,4) [175] [2023-11-21 21:03:35,849 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma pack(pop) [181] [2023-11-21 21:03:35,849 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma pack(push,4) [402] [2023-11-21 21:03:35,850 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma pack(pop) [455] [2023-11-21 21:03:35,850 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma pack(push,1) [474] [2023-11-21 21:03:35,850 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma pack(pop) [475] [2023-11-21 21:03:35,850 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma pack(push,4) [1148] [2023-11-21 21:03:35,850 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma pack(pop) [1321] [2023-11-21 21:03:35,851 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma pack(push,8) [1417] [2023-11-21 21:03:35,851 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma pack(pop) [1418] [2023-11-21 21:03:35,851 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma pack(push,4) [1421] [2023-11-21 21:03:35,851 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma pack(pop) [1422] [2023-11-21 21:03:35,852 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma pack(push,4) [1423] [2023-11-21 21:03:35,852 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma pack(pop) [1424] [2023-11-21 21:03:35,852 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma pack(push,1) [1425] [2023-11-21 21:03:35,852 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma pack(pop) [1426] [2023-11-21 21:03:35,852 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma pack(push,4) [1433] [2023-11-21 21:03:35,853 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma pack(pop) [1434] [2023-11-21 21:03:35,853 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(push) [1435] [2023-11-21 21:03:35,853 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(disable:4035) [1436] [2023-11-21 21:03:35,853 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(pop) [1437] [2023-11-21 21:03:35,854 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(disable:4103) [1441] [2023-11-21 21:03:35,854 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(disable:4103) [1442] [2023-11-21 21:03:35,854 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(push) [1464] [2023-11-21 21:03:35,854 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(disable:4035) [1465] [2023-11-21 21:03:35,854 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(pop) [1466] [2023-11-21 21:03:35,855 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(disable:4035) [1473] [2023-11-21 21:03:35,855 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(push) [1474] [2023-11-21 21:03:35,855 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(disable:4164) [1475] [2023-11-21 21:03:35,856 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma function(_enable) [1476] [2023-11-21 21:03:35,856 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma function(_disable) [1477] [2023-11-21 21:03:35,856 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(pop) [1478] [2023-11-21 21:03:35,857 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(disable:4103) [1479] [2023-11-21 21:03:35,857 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(disable:4103) [1480] [2023-11-21 21:03:35,858 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(disable:4103) [1481] [2023-11-21 21:03:35,858 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(disable:4103) [1482] [2023-11-21 21:03:35,858 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(disable:4103) [1535] [2023-11-21 21:03:35,858 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(disable:4103) [1536] [2023-11-21 21:03:35,858 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(disable:4200) [1600] [2023-11-21 21:03:35,859 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(default:4200) [1601] [2023-11-21 21:03:35,859 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma alloc_text(INIT,DriverEntry) [1642] [2023-11-21 21:03:35,860 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma alloc_text(PAGE,KbFilter_AddDevice) [1643] [2023-11-21 21:03:35,860 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma alloc_text(PAGE,KbFilter_CreateClose) [1644] [2023-11-21 21:03:35,860 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma alloc_text(PAGE,KbFilter_IoCtl) [1645] [2023-11-21 21:03:35,860 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma alloc_text(PAGE,KbFilter_InternIoCtl) [1646] [2023-11-21 21:03:35,860 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma alloc_text(PAGE,KbFilter_Unload) [1647] [2023-11-21 21:03:35,861 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma alloc_text(PAGE,KbFilter_DispatchPassThrough) [1648] [2023-11-21 21:03:35,861 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma alloc_text(PAGE,KbFilter_PnP) [1649] [2023-11-21 21:03:35,861 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma alloc_text(PAGE,KbFilter_Power) [1650] [2023-11-21 21:03:35,861 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(push) [2349] [2023-11-21 21:03:35,862 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(disable:4035) [2350] [2023-11-21 21:03:35,862 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(pop) [2351] [2023-11-21 21:03:35,863 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(disable:4103) [2352] [2023-11-21 21:03:35,863 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(disable:4103) [2353] [2023-11-21 21:03:35,863 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(push) [2354] [2023-11-21 21:03:35,863 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(disable:4035) [2355] [2023-11-21 21:03:35,863 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(pop) [2356] [2023-11-21 21:03:35,864 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(disable:4035) [2357] [2023-11-21 21:03:35,865 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(push) [2358] [2023-11-21 21:03:35,865 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(disable:4164) [2359] [2023-11-21 21:03:35,867 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma function(_enable) [2360] [2023-11-21 21:03:35,868 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma function(_disable) [2361] [2023-11-21 21:03:35,868 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(pop) [2362] [2023-11-21 21:03:35,868 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(disable:4103) [2363] [2023-11-21 21:03:35,868 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(disable:4103) [2364] [2023-11-21 21:03:35,868 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(disable:4103) [2365] [2023-11-21 21:03:35,869 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(disable:4103) [2366] [2023-11-21 21:03:35,869 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(disable:4103) [2367] [2023-11-21 21:03:35,869 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(disable:4103) [2368] [2023-11-21 21:03:35,869 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(disable:4200) [2369] [2023-11-21 21:03:35,869 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(default:4200) [2370] [2023-11-21 21:03:35,959 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e498ba58-a034-4cf1-ba14-3bb2e299e5e1/sv-benchmarks/c/ntdrivers/kbfiltr.i.cil-2.c[62209,62222] [2023-11-21 21:03:36,132 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 21:03:36,171 INFO L206 MainTranslator]: Completed translation [2023-11-21 21:03:36,172 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:36 WrapperNode [2023-11-21 21:03:36,172 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 21:03:36,173 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 21:03:36,173 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 21:03:36,174 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 21:03:36,182 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:36" (1/1) ... [2023-11-21 21:03:36,240 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:36" (1/1) ... [2023-11-21 21:03:36,322 INFO L138 Inliner]: procedures = 109, calls = 328, calls flagged for inlining = 23, calls inlined = 20, statements flattened = 1141 [2023-11-21 21:03:36,322 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 21:03:36,323 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 21:03:36,324 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 21:03:36,324 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 21:03:36,345 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:36" (1/1) ... [2023-11-21 21:03:36,346 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:36" (1/1) ... [2023-11-21 21:03:36,357 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:36" (1/1) ... [2023-11-21 21:03:36,449 INFO L187 HeapSplitter]: Split 201 memory accesses to 7 slices as follows [8, 2, 3, 37, 79, 63, 9] [2023-11-21 21:03:36,449 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:36" (1/1) ... [2023-11-21 21:03:36,450 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:36" (1/1) ... [2023-11-21 21:03:36,533 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:36" (1/1) ... [2023-11-21 21:03:36,558 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:36" (1/1) ... [2023-11-21 21:03:36,568 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:36" (1/1) ... [2023-11-21 21:03:36,590 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:36" (1/1) ... [2023-11-21 21:03:36,615 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 21:03:36,617 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 21:03:36,617 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 21:03:36,618 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 21:03:36,619 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:36" (1/1) ... [2023-11-21 21:03:36,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 21:03:36,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e498ba58-a034-4cf1-ba14-3bb2e299e5e1/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:03:36,653 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e498ba58-a034-4cf1-ba14-3bb2e299e5e1/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 21:03:36,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e498ba58-a034-4cf1-ba14-3bb2e299e5e1/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 21:03:36,698 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Complete [2023-11-21 21:03:36,698 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Complete [2023-11-21 21:03:36,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2023-11-21 21:03:36,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2023-11-21 21:03:36,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2023-11-21 21:03:36,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2023-11-21 21:03:36,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2023-11-21 21:03:36,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2023-11-21 21:03:36,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#6 [2023-11-21 21:03:36,699 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#0 [2023-11-21 21:03:36,700 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#1 [2023-11-21 21:03:36,700 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#2 [2023-11-21 21:03:36,700 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#3 [2023-11-21 21:03:36,700 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#4 [2023-11-21 21:03:36,701 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#5 [2023-11-21 21:03:36,701 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#6 [2023-11-21 21:03:36,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2023-11-21 21:03:36,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2023-11-21 21:03:36,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2023-11-21 21:03:36,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2023-11-21 21:03:36,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2023-11-21 21:03:36,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2023-11-21 21:03:36,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#6 [2023-11-21 21:03:36,702 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-21 21:03:36,702 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-21 21:03:36,702 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-21 21:03:36,702 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-21 21:03:36,702 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-21 21:03:36,702 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-21 21:03:36,702 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-21 21:03:36,703 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2023-11-21 21:03:36,703 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2023-11-21 21:03:36,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-21 21:03:36,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-21 21:03:36,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-21 21:03:36,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-21 21:03:36,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-21 21:03:36,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-21 21:03:36,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-21 21:03:36,704 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2023-11-21 21:03:36,704 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2023-11-21 21:03:36,705 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2023-11-21 21:03:36,705 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2023-11-21 21:03:36,705 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-21 21:03:36,705 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 21:03:36,706 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 21:03:36,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-21 21:03:36,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-21 21:03:36,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-21 21:03:36,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-21 21:03:36,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-21 21:03:36,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2023-11-21 21:03:36,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2023-11-21 21:03:36,707 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2023-11-21 21:03:36,707 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2023-11-21 21:03:36,707 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_CreateClose [2023-11-21 21:03:36,707 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_CreateClose [2023-11-21 21:03:36,707 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-21 21:03:36,707 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-21 21:03:36,708 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-21 21:03:36,708 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-21 21:03:36,708 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-21 21:03:36,708 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2023-11-21 21:03:36,709 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2023-11-21 21:03:36,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 21:03:36,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-21 21:03:36,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-21 21:03:36,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-21 21:03:36,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-21 21:03:36,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-21 21:03:36,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-21 21:03:36,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-21 21:03:36,710 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#0 [2023-11-21 21:03:36,711 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#1 [2023-11-21 21:03:36,712 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#2 [2023-11-21 21:03:36,715 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#3 [2023-11-21 21:03:36,715 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#4 [2023-11-21 21:03:36,715 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#5 [2023-11-21 21:03:36,716 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#6 [2023-11-21 21:03:36,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 21:03:36,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 21:03:36,717 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_DispatchPassThrough [2023-11-21 21:03:36,718 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_DispatchPassThrough [2023-11-21 21:03:37,217 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 21:03:37,219 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 21:03:37,363 WARN L820 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-21 21:03:37,396 INFO L774 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2023-11-21 21:03:37,396 INFO L774 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2023-11-21 21:03:37,398 WARN L820 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-21 21:03:37,400 WARN L820 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-21 21:03:37,403 WARN L820 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-21 21:03:37,407 WARN L820 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-21 21:03:37,411 WARN L820 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-21 21:03:37,415 WARN L820 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-21 21:03:37,416 WARN L820 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-21 21:03:39,294 INFO L774 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##96: assume !false; [2023-11-21 21:03:39,294 INFO L774 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##95: assume false; [2023-11-21 21:03:39,294 INFO L774 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##180: assume false; [2023-11-21 21:03:39,295 INFO L774 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##181: assume !false; [2023-11-21 21:03:39,295 INFO L774 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##48: assume !false; [2023-11-21 21:03:39,295 INFO L774 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##47: assume false; [2023-11-21 21:03:39,295 INFO L774 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##137: assume false; [2023-11-21 21:03:39,295 INFO L774 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##138: assume !false; [2023-11-21 21:03:39,295 INFO L774 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume !false; [2023-11-21 21:03:39,296 INFO L774 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume false; [2023-11-21 21:03:39,296 INFO L774 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume false; [2023-11-21 21:03:39,296 INFO L774 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume !false; [2023-11-21 21:03:39,296 INFO L774 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##164: assume !false; [2023-11-21 21:03:39,296 INFO L774 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##163: assume false; [2023-11-21 21:03:39,318 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 21:03:40,171 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 21:03:40,171 INFO L308 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-21 21:03:40,173 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:03:40 BoogieIcfgContainer [2023-11-21 21:03:40,173 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 21:03:40,177 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 21:03:40,178 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 21:03:40,181 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 21:03:40,181 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 09:03:34" (1/3) ... [2023-11-21 21:03:40,182 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@188b47e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:03:40, skipping insertion in model container [2023-11-21 21:03:40,182 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:36" (2/3) ... [2023-11-21 21:03:40,184 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@188b47e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:03:40, skipping insertion in model container [2023-11-21 21:03:40,184 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:03:40" (3/3) ... [2023-11-21 21:03:40,185 INFO L112 eAbstractionObserver]: Analyzing ICFG kbfiltr.i.cil-2.c [2023-11-21 21:03:40,205 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 21:03:40,206 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-21 21:03:40,277 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 21:03:40,284 INFO L357 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=LoopHeads, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@65d0959b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 21:03:40,284 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-21 21:03:40,289 INFO L276 IsEmpty]: Start isEmpty. Operand has 146 states, 108 states have (on average 1.6203703703703705) internal successors, (175), 126 states have internal predecessors, (175), 29 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (29), 27 states have call predecessors, (29), 29 states have call successors, (29) [2023-11-21 21:03:40,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-21 21:03:40,298 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:03:40,299 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:03:40,300 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:03:40,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:03:40,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1176593563, now seen corresponding path program 1 times [2023-11-21 21:03:40,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:03:40,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418007667] [2023-11-21 21:03:40,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:03:40,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:03:40,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:41,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:03:41,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:03:41,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418007667] [2023-11-21 21:03:41,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418007667] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:03:41,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:03:41,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 21:03:41,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508479009] [2023-11-21 21:03:41,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:03:41,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 21:03:41,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:03:41,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 21:03:41,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 21:03:41,147 INFO L87 Difference]: Start difference. First operand has 146 states, 108 states have (on average 1.6203703703703705) internal successors, (175), 126 states have internal predecessors, (175), 29 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (29), 27 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:03:43,177 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 21:03:44,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:03:44,370 INFO L93 Difference]: Finished difference Result 248 states and 394 transitions. [2023-11-21 21:03:44,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 21:03:44,373 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-21 21:03:44,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:03:44,385 INFO L225 Difference]: With dead ends: 248 [2023-11-21 21:03:44,385 INFO L226 Difference]: Without dead ends: 142 [2023-11-21 21:03:44,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 21:03:44,393 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 96 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-11-21 21:03:44,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 261 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 61 Invalid, 1 Unknown, 0 Unchecked, 3.2s Time] [2023-11-21 21:03:44,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2023-11-21 21:03:44,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2023-11-21 21:03:44,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 106 states have (on average 1.5) internal successors, (159), 122 states have internal predecessors, (159), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-21 21:03:44,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 203 transitions. [2023-11-21 21:03:44,453 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 203 transitions. Word has length 11 [2023-11-21 21:03:44,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:03:44,453 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 203 transitions. [2023-11-21 21:03:44,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:03:44,454 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 203 transitions. [2023-11-21 21:03:44,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-21 21:03:44,455 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:03:44,455 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:03:44,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 21:03:44,456 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:03:44,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:03:44,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1164418678, now seen corresponding path program 1 times [2023-11-21 21:03:44,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:03:44,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588753524] [2023-11-21 21:03:44,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:03:44,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:03:44,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:44,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:03:44,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:03:44,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588753524] [2023-11-21 21:03:44,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588753524] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:03:44,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:03:44,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 21:03:44,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287323438] [2023-11-21 21:03:44,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:03:44,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 21:03:44,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:03:44,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 21:03:44,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 21:03:44,836 INFO L87 Difference]: Start difference. First operand 142 states and 203 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:03:46,850 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 21:03:48,853 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 21:03:50,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:03:50,026 INFO L93 Difference]: Finished difference Result 216 states and 300 transitions. [2023-11-21 21:03:50,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 21:03:50,032 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-21 21:03:50,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:03:50,041 INFO L225 Difference]: With dead ends: 216 [2023-11-21 21:03:50,043 INFO L226 Difference]: Without dead ends: 169 [2023-11-21 21:03:50,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 21:03:50,046 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 98 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 12 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2023-11-21 21:03:50,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 216 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 106 Invalid, 2 Unknown, 0 Unchecked, 5.2s Time] [2023-11-21 21:03:50,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2023-11-21 21:03:50,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 154. [2023-11-21 21:03:50,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 120 states have (on average 1.4083333333333334) internal successors, (169), 129 states have internal predecessors, (169), 26 states have call successors, (26), 11 states have call predecessors, (26), 7 states have return successors, (18), 16 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-21 21:03:50,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 213 transitions. [2023-11-21 21:03:50,090 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 213 transitions. Word has length 13 [2023-11-21 21:03:50,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:03:50,090 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 213 transitions. [2023-11-21 21:03:50,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:03:50,091 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 213 transitions. [2023-11-21 21:03:50,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-21 21:03:50,092 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:03:50,092 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:03:50,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 21:03:50,093 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:03:50,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:03:50,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1094751201, now seen corresponding path program 1 times [2023-11-21 21:03:50,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:03:50,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091889255] [2023-11-21 21:03:50,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:03:50,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:03:50,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:50,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:03:50,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:03:50,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091889255] [2023-11-21 21:03:50,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091889255] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:03:50,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:03:50,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 21:03:50,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253337729] [2023-11-21 21:03:50,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:03:50,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 21:03:50,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:03:50,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 21:03:50,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 21:03:50,545 INFO L87 Difference]: Start difference. First operand 154 states and 213 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:03:52,557 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 21:03:53,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:03:53,149 INFO L93 Difference]: Finished difference Result 247 states and 334 transitions. [2023-11-21 21:03:53,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 21:03:53,150 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-11-21 21:03:53,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:03:53,152 INFO L225 Difference]: With dead ends: 247 [2023-11-21 21:03:53,153 INFO L226 Difference]: Without dead ends: 189 [2023-11-21 21:03:53,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 21:03:53,155 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 153 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-21 21:03:53,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 219 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 47 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2023-11-21 21:03:53,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2023-11-21 21:03:53,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 167. [2023-11-21 21:03:53,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 136 states have (on average 1.3823529411764706) internal successors, (188), 142 states have internal predecessors, (188), 22 states have call successors, (22), 11 states have call predecessors, (22), 8 states have return successors, (17), 14 states have call predecessors, (17), 16 states have call successors, (17) [2023-11-21 21:03:53,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 227 transitions. [2023-11-21 21:03:53,191 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 227 transitions. Word has length 16 [2023-11-21 21:03:53,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:03:53,192 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 227 transitions. [2023-11-21 21:03:53,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:03:53,192 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 227 transitions. [2023-11-21 21:03:53,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-21 21:03:53,194 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:03:53,195 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:03:53,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 21:03:53,195 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:03:53,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:03:53,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1599792477, now seen corresponding path program 1 times [2023-11-21 21:03:53,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:03:53,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540918645] [2023-11-21 21:03:53,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:03:53,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:03:53,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:53,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:03:53,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:03:53,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540918645] [2023-11-21 21:03:53,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540918645] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:03:53,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:03:53,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 21:03:53,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054414100] [2023-11-21 21:03:53,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:03:53,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 21:03:53,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:03:53,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 21:03:53,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 21:03:53,697 INFO L87 Difference]: Start difference. First operand 167 states and 227 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:03:55,708 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 21:03:57,729 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 21:03:58,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:03:58,619 INFO L93 Difference]: Finished difference Result 190 states and 253 transitions. [2023-11-21 21:03:58,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 21:03:58,620 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-11-21 21:03:58,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:03:58,623 INFO L225 Difference]: With dead ends: 190 [2023-11-21 21:03:58,623 INFO L226 Difference]: Without dead ends: 182 [2023-11-21 21:03:58,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 21:03:58,630 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 265 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 26 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-11-21 21:03:58,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 152 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 136 Invalid, 2 Unknown, 0 Unchecked, 4.9s Time] [2023-11-21 21:03:58,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2023-11-21 21:03:58,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 172. [2023-11-21 21:03:58,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 141 states have (on average 1.375886524822695) internal successors, (194), 147 states have internal predecessors, (194), 22 states have call successors, (22), 11 states have call predecessors, (22), 8 states have return successors, (17), 14 states have call predecessors, (17), 16 states have call successors, (17) [2023-11-21 21:03:58,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 233 transitions. [2023-11-21 21:03:58,673 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 233 transitions. Word has length 18 [2023-11-21 21:03:58,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:03:58,674 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 233 transitions. [2023-11-21 21:03:58,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:03:58,675 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 233 transitions. [2023-11-21 21:03:58,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-21 21:03:58,684 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:03:58,684 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:03:58,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-21 21:03:58,685 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:03:58,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:03:58,686 INFO L85 PathProgramCache]: Analyzing trace with hash 872074331, now seen corresponding path program 1 times [2023-11-21 21:03:58,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:03:58,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510767404] [2023-11-21 21:03:58,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:03:58,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:03:58,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:59,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:03:59,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:03:59,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510767404] [2023-11-21 21:03:59,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510767404] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:03:59,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:03:59,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 21:03:59,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231326528] [2023-11-21 21:03:59,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:03:59,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 21:03:59,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:03:59,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 21:03:59,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 21:03:59,012 INFO L87 Difference]: Start difference. First operand 172 states and 233 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:04:01,026 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 21:04:03,032 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 21:04:04,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:04:04,734 INFO L93 Difference]: Finished difference Result 175 states and 235 transitions. [2023-11-21 21:04:04,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 21:04:04,735 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-11-21 21:04:04,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:04:04,737 INFO L225 Difference]: With dead ends: 175 [2023-11-21 21:04:04,737 INFO L226 Difference]: Without dead ends: 171 [2023-11-21 21:04:04,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 21:04:04,738 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 13 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 5 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2023-11-21 21:04:04,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 235 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 99 Invalid, 2 Unknown, 0 Unchecked, 5.7s Time] [2023-11-21 21:04:04,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2023-11-21 21:04:04,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2023-11-21 21:04:04,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 141 states have (on average 1.3617021276595744) internal successors, (192), 146 states have internal predecessors, (192), 21 states have call successors, (21), 11 states have call predecessors, (21), 8 states have return successors, (17), 14 states have call predecessors, (17), 16 states have call successors, (17) [2023-11-21 21:04:04,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 230 transitions. [2023-11-21 21:04:04,765 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 230 transitions. Word has length 19 [2023-11-21 21:04:04,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:04:04,766 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 230 transitions. [2023-11-21 21:04:04,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:04:04,767 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 230 transitions. [2023-11-21 21:04:04,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-21 21:04:04,769 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:04:04,770 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:04:04,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-21 21:04:04,770 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:04:04,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:04:04,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1538617619, now seen corresponding path program 1 times [2023-11-21 21:04:04,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:04:04,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715516052] [2023-11-21 21:04:04,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:04:04,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:04:04,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:04:05,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:04:05,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:04:05,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715516052] [2023-11-21 21:04:05,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715516052] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:04:05,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:04:05,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 21:04:05,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028444590] [2023-11-21 21:04:05,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:04:05,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 21:04:05,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:04:05,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 21:04:05,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 21:04:05,298 INFO L87 Difference]: Start difference. First operand 171 states and 230 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:04:07,309 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 21:04:09,317 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 21:04:10,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:04:10,572 INFO L93 Difference]: Finished difference Result 189 states and 249 transitions. [2023-11-21 21:04:10,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 21:04:10,573 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-11-21 21:04:10,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:04:10,575 INFO L225 Difference]: With dead ends: 189 [2023-11-21 21:04:10,575 INFO L226 Difference]: Without dead ends: 181 [2023-11-21 21:04:10,575 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 21:04:10,576 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 261 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 26 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2023-11-21 21:04:10,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [261 Valid, 152 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 131 Invalid, 2 Unknown, 0 Unchecked, 5.2s Time] [2023-11-21 21:04:10,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2023-11-21 21:04:10,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 172. [2023-11-21 21:04:10,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 142 states have (on average 1.3591549295774648) internal successors, (193), 147 states have internal predecessors, (193), 21 states have call successors, (21), 11 states have call predecessors, (21), 8 states have return successors, (17), 14 states have call predecessors, (17), 16 states have call successors, (17) [2023-11-21 21:04:10,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 231 transitions. [2023-11-21 21:04:10,598 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 231 transitions. Word has length 19 [2023-11-21 21:04:10,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:04:10,598 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 231 transitions. [2023-11-21 21:04:10,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:04:10,599 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 231 transitions. [2023-11-21 21:04:10,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-21 21:04:10,600 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:04:10,600 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:04:10,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-21 21:04:10,601 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:04:10,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:04:10,601 INFO L85 PathProgramCache]: Analyzing trace with hash 214087130, now seen corresponding path program 1 times [2023-11-21 21:04:10,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:04:10,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226736271] [2023-11-21 21:04:10,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:04:10,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:04:10,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:04:11,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:04:11,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:04:11,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226736271] [2023-11-21 21:04:11,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226736271] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:04:11,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:04:11,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 21:04:11,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604371696] [2023-11-21 21:04:11,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:04:11,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 21:04:11,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:04:11,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 21:04:11,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 21:04:11,040 INFO L87 Difference]: Start difference. First operand 172 states and 231 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:04:13,051 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 21:04:13,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:04:13,858 INFO L93 Difference]: Finished difference Result 181 states and 240 transitions. [2023-11-21 21:04:13,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 21:04:13,859 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-11-21 21:04:13,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:04:13,862 INFO L225 Difference]: With dead ends: 181 [2023-11-21 21:04:13,862 INFO L226 Difference]: Without dead ends: 164 [2023-11-21 21:04:13,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 21:04:13,863 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 246 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 23 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-11-21 21:04:13,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 153 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 130 Invalid, 1 Unknown, 0 Unchecked, 2.8s Time] [2023-11-21 21:04:13,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2023-11-21 21:04:13,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2023-11-21 21:04:13,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 134 states have (on average 1.3656716417910448) internal successors, (183), 139 states have internal predecessors, (183), 21 states have call successors, (21), 11 states have call predecessors, (21), 8 states have return successors, (17), 14 states have call predecessors, (17), 16 states have call successors, (17) [2023-11-21 21:04:13,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 221 transitions. [2023-11-21 21:04:13,880 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 221 transitions. Word has length 20 [2023-11-21 21:04:13,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:04:13,880 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 221 transitions. [2023-11-21 21:04:13,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:04:13,881 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 221 transitions. [2023-11-21 21:04:13,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-21 21:04:13,882 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:04:13,882 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:04:13,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-21 21:04:13,883 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:04:13,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:04:13,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1406655149, now seen corresponding path program 1 times [2023-11-21 21:04:13,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:04:13,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269860226] [2023-11-21 21:04:13,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:04:13,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:04:14,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:04:14,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:04:14,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:04:14,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269860226] [2023-11-21 21:04:14,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269860226] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:04:14,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:04:14,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 21:04:14,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49078529] [2023-11-21 21:04:14,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:04:14,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 21:04:14,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:04:14,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 21:04:14,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 21:04:14,274 INFO L87 Difference]: Start difference. First operand 164 states and 221 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:04:16,285 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 21:04:17,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:04:17,873 INFO L93 Difference]: Finished difference Result 212 states and 281 transitions. [2023-11-21 21:04:17,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 21:04:17,873 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2023-11-21 21:04:17,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:04:17,875 INFO L225 Difference]: With dead ends: 212 [2023-11-21 21:04:17,875 INFO L226 Difference]: Without dead ends: 179 [2023-11-21 21:04:17,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 21:04:17,877 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 191 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 23 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-11-21 21:04:17,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 205 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 136 Invalid, 1 Unknown, 0 Unchecked, 3.6s Time] [2023-11-21 21:04:17,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2023-11-21 21:04:17,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 164. [2023-11-21 21:04:17,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 134 states have (on average 1.3507462686567164) internal successors, (181), 139 states have internal predecessors, (181), 21 states have call successors, (21), 11 states have call predecessors, (21), 8 states have return successors, (17), 14 states have call predecessors, (17), 16 states have call successors, (17) [2023-11-21 21:04:17,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 219 transitions. [2023-11-21 21:04:17,896 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 219 transitions. Word has length 26 [2023-11-21 21:04:17,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:04:17,896 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 219 transitions. [2023-11-21 21:04:17,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:04:17,897 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 219 transitions. [2023-11-21 21:04:17,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-21 21:04:17,898 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:04:17,898 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:04:17,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-21 21:04:17,899 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:04:17,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:04:17,899 INFO L85 PathProgramCache]: Analyzing trace with hash 2005333923, now seen corresponding path program 1 times [2023-11-21 21:04:17,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:04:17,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223354974] [2023-11-21 21:04:17,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:04:17,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:04:18,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:04:18,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:04:18,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:04:18,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223354974] [2023-11-21 21:04:18,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223354974] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:04:18,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:04:18,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 21:04:18,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699084424] [2023-11-21 21:04:18,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:04:18,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 21:04:18,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:04:18,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 21:04:18,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 21:04:18,385 INFO L87 Difference]: Start difference. First operand 164 states and 219 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:04:20,396 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 21:04:22,400 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 21:04:24,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:04:24,731 INFO L93 Difference]: Finished difference Result 197 states and 261 transitions. [2023-11-21 21:04:24,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 21:04:24,732 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-11-21 21:04:24,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:04:24,734 INFO L225 Difference]: With dead ends: 197 [2023-11-21 21:04:24,734 INFO L226 Difference]: Without dead ends: 164 [2023-11-21 21:04:24,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 21:04:24,735 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 176 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 13 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2023-11-21 21:04:24,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 202 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 126 Invalid, 2 Unknown, 0 Unchecked, 6.3s Time] [2023-11-21 21:04:24,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2023-11-21 21:04:24,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2023-11-21 21:04:24,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 134 states have (on average 1.335820895522388) internal successors, (179), 139 states have internal predecessors, (179), 21 states have call successors, (21), 11 states have call predecessors, (21), 8 states have return successors, (17), 14 states have call predecessors, (17), 16 states have call successors, (17) [2023-11-21 21:04:24,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 217 transitions. [2023-11-21 21:04:24,753 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 217 transitions. Word has length 27 [2023-11-21 21:04:24,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:04:24,754 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 217 transitions. [2023-11-21 21:04:24,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:04:24,754 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 217 transitions. [2023-11-21 21:04:24,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-21 21:04:24,756 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:04:24,756 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:04:24,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-21 21:04:24,756 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:04:24,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:04:24,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1897855570, now seen corresponding path program 1 times [2023-11-21 21:04:24,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:04:24,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237235722] [2023-11-21 21:04:24,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:04:24,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:04:24,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:04:25,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:04:25,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:04:25,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237235722] [2023-11-21 21:04:25,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237235722] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:04:25,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:04:25,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 21:04:25,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493711385] [2023-11-21 21:04:25,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:04:25,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 21:04:25,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:04:25,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 21:04:25,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 21:04:25,053 INFO L87 Difference]: Start difference. First operand 164 states and 217 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:04:27,065 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 21:04:27,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:04:27,835 INFO L93 Difference]: Finished difference Result 176 states and 232 transitions. [2023-11-21 21:04:27,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 21:04:27,836 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2023-11-21 21:04:27,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:04:27,838 INFO L225 Difference]: With dead ends: 176 [2023-11-21 21:04:27,838 INFO L226 Difference]: Without dead ends: 160 [2023-11-21 21:04:27,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 21:04:27,839 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 159 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-11-21 21:04:27,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 134 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 32 Invalid, 1 Unknown, 0 Unchecked, 2.8s Time] [2023-11-21 21:04:27,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2023-11-21 21:04:27,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2023-11-21 21:04:27,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 131 states have (on average 1.3206106870229009) internal successors, (173), 135 states have internal predecessors, (173), 20 states have call successors, (20), 11 states have call predecessors, (20), 8 states have return successors, (17), 14 states have call predecessors, (17), 16 states have call successors, (17) [2023-11-21 21:04:27,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 210 transitions. [2023-11-21 21:04:27,860 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 210 transitions. Word has length 28 [2023-11-21 21:04:27,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:04:27,861 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 210 transitions. [2023-11-21 21:04:27,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:04:27,861 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 210 transitions. [2023-11-21 21:04:27,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-21 21:04:27,863 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:04:27,864 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:04:27,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-21 21:04:27,864 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:04:27,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:04:27,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1927283987, now seen corresponding path program 1 times [2023-11-21 21:04:27,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:04:27,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72686027] [2023-11-21 21:04:27,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:04:27,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:04:28,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:04:28,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-21 21:04:28,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:04:28,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:04:28,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:04:28,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72686027] [2023-11-21 21:04:28,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72686027] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:04:28,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:04:28,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 21:04:28,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146831795] [2023-11-21 21:04:28,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:04:28,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 21:04:28,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:04:28,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 21:04:28,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 21:04:28,253 INFO L87 Difference]: Start difference. First operand 160 states and 210 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 21:04:30,264 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 21:04:32,272 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 21:04:34,276 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []