./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ntdrivers/floppy.i.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_62cff51d-36f1-44be-87b4-b43e3cd74802/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62cff51d-36f1-44be-87b4-b43e3cd74802/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62cff51d-36f1-44be-87b4-b43e3cd74802/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62cff51d-36f1-44be-87b4-b43e3cd74802/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/ntdrivers/floppy.i.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62cff51d-36f1-44be-87b4-b43e3cd74802/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62cff51d-36f1-44be-87b4-b43e3cd74802/bin/utaipan-verify-nQ1chXbOIh --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 986945cc1d8674c803a19893f7d2aec71de46e5693e78eba56c7bdad24c6e341 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 17:08:50,830 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 17:08:50,896 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62cff51d-36f1-44be-87b4-b43e3cd74802/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 17:08:50,900 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 17:08:50,901 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 17:08:50,924 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 17:08:50,925 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 17:08:50,925 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 17:08:50,926 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 17:08:50,927 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 17:08:50,927 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 17:08:50,928 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 17:08:50,928 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 17:08:50,929 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 17:08:50,929 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 17:08:50,930 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 17:08:50,931 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 17:08:50,931 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 17:08:50,932 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 17:08:50,932 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 17:08:50,933 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 17:08:50,934 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 17:08:50,934 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 17:08:50,935 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 17:08:50,935 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 17:08:50,936 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 17:08:50,936 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 17:08:50,937 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 17:08:50,937 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 17:08:50,938 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 17:08:50,938 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 17:08:50,938 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 17:08:50,939 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 17:08:50,939 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 17:08:50,939 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 17:08:50,939 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 17:08:50,939 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 17:08:50,940 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:08:50,940 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 17:08:50,940 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 17:08:50,940 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 17:08:50,941 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 17:08:50,941 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 17:08:50,941 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 17:08:50,941 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 17:08:50,942 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 17:08:50,942 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 17:08:50,942 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_62cff51d-36f1-44be-87b4-b43e3cd74802/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62cff51d-36f1-44be-87b4-b43e3cd74802/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 986945cc1d8674c803a19893f7d2aec71de46e5693e78eba56c7bdad24c6e341 [2023-12-02 17:08:51,138 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 17:08:51,157 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 17:08:51,159 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 17:08:51,160 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 17:08:51,161 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 17:08:51,162 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62cff51d-36f1-44be-87b4-b43e3cd74802/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/ntdrivers/floppy.i.cil-1.c [2023-12-02 17:08:53,890 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 17:08:54,265 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 17:08:54,265 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62cff51d-36f1-44be-87b4-b43e3cd74802/sv-benchmarks/c/ntdrivers/floppy.i.cil-1.c [2023-12-02 17:08:54,301 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62cff51d-36f1-44be-87b4-b43e3cd74802/bin/utaipan-verify-nQ1chXbOIh/data/9112abb16/105987b4e05240839b2d0c9a67afc136/FLAGd92e24ffd [2023-12-02 17:08:54,314 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62cff51d-36f1-44be-87b4-b43e3cd74802/bin/utaipan-verify-nQ1chXbOIh/data/9112abb16/105987b4e05240839b2d0c9a67afc136 [2023-12-02 17:08:54,316 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 17:08:54,317 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 17:08:54,318 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 17:08:54,319 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 17:08:54,324 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 17:08:54,324 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:08:54" (1/1) ... [2023-12-02 17:08:54,325 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bc88b38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:08:54, skipping insertion in model container [2023-12-02 17:08:54,326 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:08:54" (1/1) ... [2023-12-02 17:08:54,462 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 17:08:55,106 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_62cff51d-36f1-44be-87b4-b43e3cd74802/sv-benchmarks/c/ntdrivers/floppy.i.cil-1.c[76734,76747] [2023-12-02 17:08:55,512 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:08:55,554 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 17:08:55,564 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma pack(push,8) [11] [2023-12-02 17:08:55,565 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma pack(pop) [14] [2023-12-02 17:08:55,565 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma pack(push,8) [15] [2023-12-02 17:08:55,565 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma pack(pop) [16] [2023-12-02 17:08:55,566 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma pack(push,4) [177] [2023-12-02 17:08:55,566 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma pack(pop) [183] [2023-12-02 17:08:55,566 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma pack(push,4) [431] [2023-12-02 17:08:55,566 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma pack(pop) [485] [2023-12-02 17:08:55,566 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma pack(push,1) [505] [2023-12-02 17:08:55,566 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma pack(pop) [506] [2023-12-02 17:08:55,567 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma pack(push,4) [1208] [2023-12-02 17:08:55,567 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma pack(pop) [1381] [2023-12-02 17:08:55,567 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma pack(push,1) [1460] [2023-12-02 17:08:55,567 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma pack(pop) [1461] [2023-12-02 17:08:55,567 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma pack(push,1) [1462] [2023-12-02 17:08:55,567 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma pack(pop) [1463] [2023-12-02 17:08:55,568 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma pack(push,1) [1464] [2023-12-02 17:08:55,568 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma pack(pop) [1465] [2023-12-02 17:08:55,568 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma pack(push,1) [1466] [2023-12-02 17:08:55,568 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma pack(pop) [1467] [2023-12-02 17:08:55,568 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma pack(push,1) [1468] [2023-12-02 17:08:55,569 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma pack(pop) [1469] [2023-12-02 17:08:55,569 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma pack(push,8) [1714] [2023-12-02 17:08:55,569 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma pack(pop) [1715] [2023-12-02 17:08:55,569 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma pack(push,4) [1718] [2023-12-02 17:08:55,569 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma pack(pop) [1719] [2023-12-02 17:08:55,569 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma pack(push,4) [1720] [2023-12-02 17:08:55,569 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma pack(pop) [1721] [2023-12-02 17:08:55,570 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma pack(push,1) [1722] [2023-12-02 17:08:55,570 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma pack(pop) [1723] [2023-12-02 17:08:55,570 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma pack(push,4) [1730] [2023-12-02 17:08:55,570 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma pack(pop) [1731] [2023-12-02 17:08:55,570 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(push) [1734] [2023-12-02 17:08:55,571 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(disable:4035) [1735] [2023-12-02 17:08:55,571 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(pop) [1736] [2023-12-02 17:08:55,571 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(disable:4103) [1740] [2023-12-02 17:08:55,571 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(disable:4103) [1741] [2023-12-02 17:08:55,571 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(push) [1763] [2023-12-02 17:08:55,572 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(disable:4035) [1764] [2023-12-02 17:08:55,572 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(pop) [1765] [2023-12-02 17:08:55,572 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(disable:4035) [1771] [2023-12-02 17:08:55,572 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(push) [1772] [2023-12-02 17:08:55,572 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(disable:4164) [1773] [2023-12-02 17:08:55,572 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma function(_enable) [1774] [2023-12-02 17:08:55,572 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma function(_disable) [1775] [2023-12-02 17:08:55,573 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(pop) [1776] [2023-12-02 17:08:55,573 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(disable:4103) [1777] [2023-12-02 17:08:55,573 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(disable:4103) [1778] [2023-12-02 17:08:55,573 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(disable:4103) [1779] [2023-12-02 17:08:55,573 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(disable:4103) [1780] [2023-12-02 17:08:55,574 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(disable:4103) [1831] [2023-12-02 17:08:55,574 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(disable:4103) [1832] [2023-12-02 17:08:55,574 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(disable:4200) [1896] [2023-12-02 17:08:55,574 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(default:4200) [1897] [2023-12-02 17:08:55,574 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(disable:4103) [1909] [2023-12-02 17:08:55,574 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(disable:4103) [1910] [2023-12-02 17:08:55,575 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(disable:4103) [1911] [2023-12-02 17:08:55,575 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(disable:4103) [1912] [2023-12-02 17:08:55,575 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(disable:4103) [1913] [2023-12-02 17:08:55,575 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(disable:4103) [1914] [2023-12-02 17:08:55,576 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(disable:4103) [1915] [2023-12-02 17:08:55,576 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(disable:4103) [1916] [2023-12-02 17:08:55,576 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(disable:4103) [1917] [2023-12-02 17:08:55,576 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(disable:4103) [1918] [2023-12-02 17:08:55,576 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma alloc_text(INIT,DriverEntry) [2057] [2023-12-02 17:08:55,577 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma alloc_text(PAGE,FloppyAddDevice) [2058] [2023-12-02 17:08:55,577 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma alloc_text(PAGE,FloppyPnp) [2059] [2023-12-02 17:08:55,577 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma alloc_text(PAGE,FloppyPower) [2060] [2023-12-02 17:08:55,577 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma alloc_text(PAGE,FlConfigCallBack) [2061] [2023-12-02 17:08:55,577 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma alloc_text(PAGE,FlInitializeControllerHardware) [2062] [2023-12-02 17:08:55,578 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma alloc_text(PAGE,FlInterpretError) [2063] [2023-12-02 17:08:55,578 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma alloc_text(PAGE,FlDatarateSpecifyConfigure) [2064] [2023-12-02 17:08:55,578 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma alloc_text(PAGE,FlRecalibrateDrive) [2065] [2023-12-02 17:08:55,578 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma alloc_text(PAGE,FlDetermineMediaType) [2066] [2023-12-02 17:08:55,578 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma alloc_text(PAGE,FlCheckBootSector) [2067] [2023-12-02 17:08:55,578 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma alloc_text(PAGE,FlConsolidateMediaTypeWithBootSector) [2068] [2023-12-02 17:08:55,578 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma alloc_text(PAGE,FlIssueCommand) [2069] [2023-12-02 17:08:55,578 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma alloc_text(PAGE,FlReadWriteTrack) [2070] [2023-12-02 17:08:55,579 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma alloc_text(PAGE,FlReadWrite) [2071] [2023-12-02 17:08:55,579 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma alloc_text(PAGE,FlFormat) [2072] [2023-12-02 17:08:55,579 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma alloc_text(PAGE,FlFinishOperation) [2073] [2023-12-02 17:08:55,579 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma alloc_text(PAGE,FlStartDrive) [2074] [2023-12-02 17:08:55,579 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma alloc_text(PAGE,FloppyThread) [2075] [2023-12-02 17:08:55,579 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma alloc_text(PAGE,FlAllocateIoBuffer) [2076] [2023-12-02 17:08:55,579 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma alloc_text(PAGE,FlFreeIoBuffer) [2077] [2023-12-02 17:08:55,580 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma alloc_text(PAGE,FloppyCreateClose) [2078] [2023-12-02 17:08:55,580 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma alloc_text(PAGE,FloppyDeviceControl) [2079] [2023-12-02 17:08:55,580 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma alloc_text(PAGE,FloppyReadWrite) [2080] [2023-12-02 17:08:55,580 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma alloc_text(PAGE,FlCheckFormatParameters) [2081] [2023-12-02 17:08:55,580 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma alloc_text(PAGE,FlFdcDeviceIo) [2082] [2023-12-02 17:08:55,581 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma alloc_text(PAGE,FlHdbit) [2083] [2023-12-02 17:08:55,581 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(push) [6979] [2023-12-02 17:08:55,581 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(disable:4035) [6980] [2023-12-02 17:08:55,581 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(pop) [6981] [2023-12-02 17:08:55,581 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(disable:4103) [6982] [2023-12-02 17:08:55,581 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(disable:4103) [6983] [2023-12-02 17:08:55,582 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(push) [6984] [2023-12-02 17:08:55,582 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(disable:4035) [6985] [2023-12-02 17:08:55,582 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(pop) [6986] [2023-12-02 17:08:55,582 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(disable:4035) [6987] [2023-12-02 17:08:55,582 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(push) [6988] [2023-12-02 17:08:55,583 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(disable:4164) [6989] [2023-12-02 17:08:55,583 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma function(_enable) [6990] [2023-12-02 17:08:55,583 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma function(_disable) [6991] [2023-12-02 17:08:55,583 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(pop) [6992] [2023-12-02 17:08:55,583 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(disable:4103) [6993] [2023-12-02 17:08:55,584 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(disable:4103) [6994] [2023-12-02 17:08:55,584 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(disable:4103) [6995] [2023-12-02 17:08:55,584 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(disable:4103) [6996] [2023-12-02 17:08:55,584 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(disable:4103) [6997] [2023-12-02 17:08:55,584 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(disable:4103) [6998] [2023-12-02 17:08:55,584 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(disable:4200) [6999] [2023-12-02 17:08:55,584 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(default:4200) [7000] [2023-12-02 17:08:55,633 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_62cff51d-36f1-44be-87b4-b43e3cd74802/sv-benchmarks/c/ntdrivers/floppy.i.cil-1.c[76734,76747] [2023-12-02 17:08:55,876 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:08:55,921 WARN L675 CHandler]: The function swprintf is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 17:08:55,921 WARN L675 CHandler]: The function sprintf is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 17:08:55,929 INFO L206 MainTranslator]: Completed translation [2023-12-02 17:08:55,930 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:08:55 WrapperNode [2023-12-02 17:08:55,930 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 17:08:55,931 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 17:08:55,931 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 17:08:55,931 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 17:08:55,939 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:08:55" (1/1) ... [2023-12-02 17:08:56,005 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:08:55" (1/1) ... [2023-12-02 17:08:56,106 INFO L138 Inliner]: procedures = 126, calls = 2884, calls flagged for inlining = 36, calls inlined = 25, statements flattened = 3158 [2023-12-02 17:08:56,106 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 17:08:56,107 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 17:08:56,107 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 17:08:56,107 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 17:08:56,116 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:08:55" (1/1) ... [2023-12-02 17:08:56,116 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:08:55" (1/1) ... [2023-12-02 17:08:56,133 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:08:55" (1/1) ... [2023-12-02 17:08:56,134 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:08:55" (1/1) ... [2023-12-02 17:08:56,229 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:08:55" (1/1) ... [2023-12-02 17:08:56,244 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:08:55" (1/1) ... [2023-12-02 17:08:56,256 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:08:55" (1/1) ... [2023-12-02 17:08:56,271 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:08:55" (1/1) ... [2023-12-02 17:08:56,287 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 17:08:56,288 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 17:08:56,288 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 17:08:56,288 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 17:08:56,289 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:08:55" (1/1) ... [2023-12-02 17:08:56,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:08:56,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62cff51d-36f1-44be-87b4-b43e3cd74802/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:08:56,319 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62cff51d-36f1-44be-87b4-b43e3cd74802/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 17:08:56,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62cff51d-36f1-44be-87b4-b43e3cd74802/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 17:08:56,358 INFO L130 BoogieDeclarations]: Found specification of procedure IoGetConfigurationInformation [2023-12-02 17:08:56,358 INFO L138 BoogieDeclarations]: Found implementation of procedure IoGetConfigurationInformation [2023-12-02 17:08:56,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-12-02 17:08:56,359 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-12-02 17:08:56,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-12-02 17:08:56,359 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 17:08:56,359 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2023-12-02 17:08:56,359 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2023-12-02 17:08:56,359 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-12-02 17:08:56,360 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-12-02 17:08:56,360 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2023-12-02 17:08:56,360 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2023-12-02 17:08:56,360 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyCreateClose [2023-12-02 17:08:56,360 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyCreateClose [2023-12-02 17:08:56,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 17:08:56,360 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnpComplete [2023-12-02 17:08:56,361 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnpComplete [2023-12-02 17:08:56,361 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2023-12-02 17:08:56,361 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2023-12-02 17:08:56,361 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedExchange [2023-12-02 17:08:56,361 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedExchange [2023-12-02 17:08:56,361 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-12-02 17:08:56,362 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-12-02 17:08:56,362 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2023-12-02 17:08:56,362 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2023-12-02 17:08:56,362 INFO L130 BoogieDeclarations]: Found specification of procedure FlQueueIrpToThread [2023-12-02 17:08:56,362 INFO L138 BoogieDeclarations]: Found implementation of procedure FlQueueIrpToThread [2023-12-02 17:08:56,362 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyDeviceControl [2023-12-02 17:08:56,363 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyDeviceControl [2023-12-02 17:08:56,363 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 17:08:56,363 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 17:08:56,363 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyProcessQueuedRequests [2023-12-02 17:08:56,363 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyProcessQueuedRequests [2023-12-02 17:08:56,363 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertTailList [2023-12-02 17:08:56,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertTailList [2023-12-02 17:08:56,364 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 17:08:56,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 17:08:56,364 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2023-12-02 17:08:56,364 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2023-12-02 17:08:56,364 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 17:08:56,364 INFO L130 BoogieDeclarations]: Found specification of procedure FlFdcDeviceIo [2023-12-02 17:08:56,365 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFdcDeviceIo [2023-12-02 17:08:56,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 17:08:56,365 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2023-12-02 17:08:56,365 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2023-12-02 17:08:56,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 17:08:56,365 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyQueueRequest [2023-12-02 17:08:56,366 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyQueueRequest [2023-12-02 17:08:56,366 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-12-02 17:08:56,366 INFO L130 BoogieDeclarations]: Found specification of procedure ExAllocatePoolWithTag [2023-12-02 17:08:56,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAllocatePoolWithTag [2023-12-02 17:08:56,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 17:08:56,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 17:08:56,745 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 17:08:56,747 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 17:08:56,788 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-12-02 17:08:56,802 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2023-12-02 17:08:56,802 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2023-12-02 17:08:56,805 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-12-02 17:08:56,953 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##24: assume !false; [2023-12-02 17:08:56,953 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##23: assume false; [2023-12-02 17:08:56,978 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-12-02 17:08:56,994 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2023-12-02 17:08:56,994 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2023-12-02 17:08:57,079 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-12-02 17:08:57,106 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2023-12-02 17:08:57,106 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2023-12-02 17:08:57,107 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-12-02 17:08:57,107 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-12-02 17:08:57,108 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-12-02 17:08:57,284 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume !false; [2023-12-02 17:08:57,285 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##24: assume !false; [2023-12-02 17:08:57,285 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##23: assume false; [2023-12-02 17:08:57,285 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume false; [2023-12-02 17:08:57,285 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume false; [2023-12-02 17:08:57,285 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume !false; [2023-12-02 17:08:57,288 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-12-02 17:08:57,296 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-12-02 17:08:57,298 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-12-02 17:08:57,863 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##38: assume !false; [2023-12-02 17:08:57,863 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##37: assume false; [2023-12-02 17:08:57,863 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##139: assume false; [2023-12-02 17:08:57,864 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##140: assume !false; [2023-12-02 17:08:57,864 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##124: assume !false; [2023-12-02 17:08:57,864 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##123: assume false; [2023-12-02 17:08:57,896 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-12-02 17:08:57,931 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2023-12-02 17:08:57,932 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2023-12-02 17:08:57,942 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-12-02 17:08:57,943 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-12-02 17:08:57,945 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-12-02 17:08:57,947 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-12-02 17:08:57,948 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-12-02 17:08:57,951 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-12-02 17:08:57,952 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-12-02 17:08:57,953 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-12-02 17:09:01,265 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##89: assume !false; [2023-12-02 17:09:01,265 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume false; [2023-12-02 17:09:01,266 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##48: assume !false; [2023-12-02 17:09:01,266 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##47: assume false; [2023-12-02 17:09:01,266 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##127: assume !false; [2023-12-02 17:09:01,266 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##27: assume !false; [2023-12-02 17:09:01,266 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume false; [2023-12-02 17:09:01,266 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##261: assume false; [2023-12-02 17:09:01,266 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##262: assume !false; [2023-12-02 17:09:01,266 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##147: assume !false; [2023-12-02 17:09:01,267 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##146: assume false; [2023-12-02 17:09:01,267 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##214: assume !false; [2023-12-02 17:09:01,267 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##213: assume false; [2023-12-02 17:09:01,267 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##228: assume !false; [2023-12-02 17:09:01,267 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##227: assume false; [2023-12-02 17:09:01,267 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##126: assume false; [2023-12-02 17:09:01,286 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 17:09:02,118 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 17:09:02,118 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-12-02 17:09:02,120 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:09:02 BoogieIcfgContainer [2023-12-02 17:09:02,120 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 17:09:02,123 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 17:09:02,123 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 17:09:02,126 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 17:09:02,126 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 05:08:54" (1/3) ... [2023-12-02 17:09:02,127 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38e247d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:09:02, skipping insertion in model container [2023-12-02 17:09:02,127 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:08:55" (2/3) ... [2023-12-02 17:09:02,127 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38e247d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:09:02, skipping insertion in model container [2023-12-02 17:09:02,127 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:09:02" (3/3) ... [2023-12-02 17:09:02,129 INFO L112 eAbstractionObserver]: Analyzing ICFG floppy.i.cil-1.c [2023-12-02 17:09:02,148 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 17:09:02,148 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 17:09:02,205 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 17:09:02,212 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=FINITE_AUTOMATA, 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;@3f6957ad, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 17:09:02,212 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 17:09:02,219 INFO L276 IsEmpty]: Start isEmpty. Operand has 409 states, 298 states have (on average 1.5570469798657718) internal successors, (464), 331 states have internal predecessors, (464), 90 states have call successors, (90), 19 states have call predecessors, (90), 19 states have return successors, (90), 84 states have call predecessors, (90), 90 states have call successors, (90) [2023-12-02 17:09:02,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-02 17:09:02,228 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:09:02,229 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] [2023-12-02 17:09:02,229 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:09:02,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:09:02,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1721791624, now seen corresponding path program 1 times [2023-12-02 17:09:02,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:09:02,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312388573] [2023-12-02 17:09:02,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:09:02,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:09:02,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:09:03,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:09:03,214 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:09:03,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312388573] [2023-12-02 17:09:03,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312388573] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:09:03,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:09:03,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:09:03,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675473908] [2023-12-02 17:09:03,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:09:03,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:09:03,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:09:03,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:09:03,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:09:03,256 INFO L87 Difference]: Start difference. First operand has 409 states, 298 states have (on average 1.5570469798657718) internal successors, (464), 331 states have internal predecessors, (464), 90 states have call successors, (90), 19 states have call predecessors, (90), 19 states have return successors, (90), 84 states have call predecessors, (90), 90 states have call successors, (90) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 17:09:05,648 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:09:08,663 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:09:10,673 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:09:13,669 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 [] [2023-12-02 17:09:13,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:09:13,794 INFO L93 Difference]: Finished difference Result 1001 states and 1640 transitions. [2023-12-02 17:09:13,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:09:13,797 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2023-12-02 17:09:13,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:09:13,816 INFO L225 Difference]: With dead ends: 1001 [2023-12-02 17:09:13,816 INFO L226 Difference]: Without dead ends: 642 [2023-12-02 17:09:13,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:09:13,829 INFO L413 NwaCegarLoop]: 581 mSDtfsCounter, 446 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 28 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 969 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2023-12-02 17:09:13,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [446 Valid, 969 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 238 Invalid, 3 Unknown, 0 Unchecked, 10.4s Time] [2023-12-02 17:09:13,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2023-12-02 17:09:13,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 624. [2023-12-02 17:09:13,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 624 states, 475 states have (on average 1.5073684210526315) internal successors, (716), 503 states have internal predecessors, (716), 117 states have call successors, (117), 35 states have call predecessors, (117), 31 states have return successors, (114), 93 states have call predecessors, (114), 102 states have call successors, (114) [2023-12-02 17:09:13,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 947 transitions. [2023-12-02 17:09:13,933 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 947 transitions. Word has length 20 [2023-12-02 17:09:13,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:09:13,934 INFO L495 AbstractCegarLoop]: Abstraction has 624 states and 947 transitions. [2023-12-02 17:09:13,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 17:09:13,934 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 947 transitions. [2023-12-02 17:09:13,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-02 17:09:13,936 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:09:13,936 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] [2023-12-02 17:09:13,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 17:09:13,937 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:09:13,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:09:13,937 INFO L85 PathProgramCache]: Analyzing trace with hash -764051095, now seen corresponding path program 1 times [2023-12-02 17:09:13,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:09:13,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962018727] [2023-12-02 17:09:13,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:09:13,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:09:14,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:09:14,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:09:14,319 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:09:14,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962018727] [2023-12-02 17:09:14,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962018727] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:09:14,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:09:14,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:09:14,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038202457] [2023-12-02 17:09:14,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:09:14,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:09:14,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:09:14,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:09:14,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:09:14,323 INFO L87 Difference]: Start difference. First operand 624 states and 947 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 17:09:17,761 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:09:19,795 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:09:19,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:09:19,933 INFO L93 Difference]: Finished difference Result 646 states and 973 transitions. [2023-12-02 17:09:19,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:09:19,933 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), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2023-12-02 17:09:19,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:09:19,940 INFO L225 Difference]: With dead ends: 646 [2023-12-02 17:09:19,941 INFO L226 Difference]: Without dead ends: 629 [2023-12-02 17:09:19,941 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 [2023-12-02 17:09:19,942 INFO L413 NwaCegarLoop]: 522 mSDtfsCounter, 11 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 996 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2023-12-02 17:09:19,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 996 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 174 Invalid, 2 Unknown, 0 Unchecked, 5.6s Time] [2023-12-02 17:09:19,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2023-12-02 17:09:19,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 629. [2023-12-02 17:09:19,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 629 states, 478 states have (on average 1.50418410041841) internal successors, (719), 506 states have internal predecessors, (719), 117 states have call successors, (117), 37 states have call predecessors, (117), 33 states have return successors, (114), 93 states have call predecessors, (114), 102 states have call successors, (114) [2023-12-02 17:09:19,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 950 transitions. [2023-12-02 17:09:19,981 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 950 transitions. Word has length 20 [2023-12-02 17:09:19,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:09:19,981 INFO L495 AbstractCegarLoop]: Abstraction has 629 states and 950 transitions. [2023-12-02 17:09:19,981 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), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 17:09:19,981 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 950 transitions. [2023-12-02 17:09:19,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-02 17:09:19,984 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:09:19,984 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] [2023-12-02 17:09:19,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 17:09:19,985 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:09:19,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:09:19,985 INFO L85 PathProgramCache]: Analyzing trace with hash 2041634087, now seen corresponding path program 1 times [2023-12-02 17:09:19,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:09:19,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562532306] [2023-12-02 17:09:19,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:09:19,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:09:20,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:09:20,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:09:20,455 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:09:20,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562532306] [2023-12-02 17:09:20,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562532306] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:09:20,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:09:20,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:09:20,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121537059] [2023-12-02 17:09:20,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:09:20,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:09:20,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:09:20,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:09:20,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:09:20,458 INFO L87 Difference]: Start difference. First operand 629 states and 950 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 17:09:23,723 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:09:24,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:09:24,459 INFO L93 Difference]: Finished difference Result 1071 states and 1646 transitions. [2023-12-02 17:09:24,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:09:24,460 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2023-12-02 17:09:24,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:09:24,470 INFO L225 Difference]: With dead ends: 1071 [2023-12-02 17:09:24,470 INFO L226 Difference]: Without dead ends: 1053 [2023-12-02 17:09:24,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:09:24,472 INFO L413 NwaCegarLoop]: 533 mSDtfsCounter, 555 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 555 SdHoareTripleChecker+Valid, 879 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-12-02 17:09:24,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [555 Valid, 879 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 125 Invalid, 1 Unknown, 0 Unchecked, 4.0s Time] [2023-12-02 17:09:24,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1053 states. [2023-12-02 17:09:24,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1053 to 1030. [2023-12-02 17:09:24,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1030 states, 795 states have (on average 1.5245283018867926) internal successors, (1212), 834 states have internal predecessors, (1212), 179 states have call successors, (179), 59 states have call predecessors, (179), 55 states have return successors, (201), 149 states have call predecessors, (201), 164 states have call successors, (201) [2023-12-02 17:09:24,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1030 states to 1030 states and 1592 transitions. [2023-12-02 17:09:24,526 INFO L78 Accepts]: Start accepts. Automaton has 1030 states and 1592 transitions. Word has length 30 [2023-12-02 17:09:24,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:09:24,526 INFO L495 AbstractCegarLoop]: Abstraction has 1030 states and 1592 transitions. [2023-12-02 17:09:24,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 17:09:24,526 INFO L276 IsEmpty]: Start isEmpty. Operand 1030 states and 1592 transitions. [2023-12-02 17:09:24,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-02 17:09:24,529 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:09:24,529 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] [2023-12-02 17:09:24,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 17:09:24,529 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:09:24,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:09:24,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1579581309, now seen corresponding path program 1 times [2023-12-02 17:09:24,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:09:24,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093435183] [2023-12-02 17:09:24,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:09:24,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:09:24,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:09:24,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:09:24,796 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:09:24,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093435183] [2023-12-02 17:09:24,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093435183] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:09:24,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:09:24,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:09:24,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342247770] [2023-12-02 17:09:24,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:09:24,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:09:24,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:09:24,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:09:24,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:09:24,799 INFO L87 Difference]: Start difference. First operand 1030 states and 1592 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 17:09:27,978 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:09:30,025 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:09:32,439 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 [] [2023-12-02 17:09:32,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:09:32,568 INFO L93 Difference]: Finished difference Result 2747 states and 4325 transitions. [2023-12-02 17:09:32,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:09:32,569 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 28 [2023-12-02 17:09:32,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:09:32,581 INFO L225 Difference]: With dead ends: 2747 [2023-12-02 17:09:32,581 INFO L226 Difference]: Without dead ends: 1864 [2023-12-02 17:09:32,585 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 [2023-12-02 17:09:32,586 INFO L413 NwaCegarLoop]: 606 mSDtfsCounter, 551 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 6 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 551 SdHoareTripleChecker+Valid, 977 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2023-12-02 17:09:32,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [551 Valid, 977 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 130 Invalid, 3 Unknown, 0 Unchecked, 7.7s Time] [2023-12-02 17:09:32,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1864 states. [2023-12-02 17:09:32,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1864 to 1830. [2023-12-02 17:09:32,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1830 states, 1431 states have (on average 1.5394828791055206) internal successors, (2203), 1494 states have internal predecessors, (2203), 300 states have call successors, (300), 103 states have call predecessors, (300), 98 states have return successors, (378), 252 states have call predecessors, (378), 287 states have call successors, (378) [2023-12-02 17:09:32,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1830 states to 1830 states and 2881 transitions. [2023-12-02 17:09:32,664 INFO L78 Accepts]: Start accepts. Automaton has 1830 states and 2881 transitions. Word has length 28 [2023-12-02 17:09:32,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:09:32,665 INFO L495 AbstractCegarLoop]: Abstraction has 1830 states and 2881 transitions. [2023-12-02 17:09:32,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 17:09:32,665 INFO L276 IsEmpty]: Start isEmpty. Operand 1830 states and 2881 transitions. [2023-12-02 17:09:32,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-12-02 17:09:32,667 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:09:32,667 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] [2023-12-02 17:09:32,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 17:09:32,668 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:09:32,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:09:32,668 INFO L85 PathProgramCache]: Analyzing trace with hash 483627544, now seen corresponding path program 1 times [2023-12-02 17:09:32,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:09:32,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848535975] [2023-12-02 17:09:32,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:09:32,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:09:32,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:09:32,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:09:32,900 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:09:32,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848535975] [2023-12-02 17:09:32,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848535975] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:09:32,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:09:32,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:09:32,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719030014] [2023-12-02 17:09:32,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:09:32,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:09:32,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:09:32,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:09:32,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:09:32,903 INFO L87 Difference]: Start difference. First operand 1830 states and 2881 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 17:09:36,285 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 [] [2023-12-02 17:09:38,288 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:09:40,398 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:09:41,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:09:41,112 INFO L93 Difference]: Finished difference Result 2625 states and 4185 transitions. [2023-12-02 17:09:41,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:09:41,113 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 29 [2023-12-02 17:09:41,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:09:41,128 INFO L225 Difference]: With dead ends: 2625 [2023-12-02 17:09:41,128 INFO L226 Difference]: Without dead ends: 2622 [2023-12-02 17:09:41,129 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 [2023-12-02 17:09:41,130 INFO L413 NwaCegarLoop]: 813 mSDtfsCounter, 358 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 1273 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:09:41,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [358 Valid, 1273 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 261 Invalid, 3 Unknown, 0 Unchecked, 8.1s Time] [2023-12-02 17:09:41,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2622 states. [2023-12-02 17:09:41,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2622 to 2504. [2023-12-02 17:09:41,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2504 states, 1992 states have (on average 1.5602409638554218) internal successors, (3108), 2064 states have internal predecessors, (3108), 376 states have call successors, (376), 139 states have call predecessors, (376), 135 states have return successors, (509), 320 states have call predecessors, (509), 363 states have call successors, (509) [2023-12-02 17:09:41,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2504 states to 2504 states and 3993 transitions. [2023-12-02 17:09:41,240 INFO L78 Accepts]: Start accepts. Automaton has 2504 states and 3993 transitions. Word has length 29 [2023-12-02 17:09:41,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:09:41,240 INFO L495 AbstractCegarLoop]: Abstraction has 2504 states and 3993 transitions. [2023-12-02 17:09:41,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 17:09:41,241 INFO L276 IsEmpty]: Start isEmpty. Operand 2504 states and 3993 transitions. [2023-12-02 17:09:41,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-02 17:09:41,242 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:09:41,242 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] [2023-12-02 17:09:41,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 17:09:41,242 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:09:41,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:09:41,243 INFO L85 PathProgramCache]: Analyzing trace with hash 940480482, now seen corresponding path program 1 times [2023-12-02 17:09:41,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:09:41,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427910140] [2023-12-02 17:09:41,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:09:41,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:09:41,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:09:41,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:09:41,484 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:09:41,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427910140] [2023-12-02 17:09:41,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427910140] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:09:41,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:09:41,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:09:41,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355424037] [2023-12-02 17:09:41,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:09:41,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:09:41,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:09:41,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:09:41,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:09:41,486 INFO L87 Difference]: Start difference. First operand 2504 states and 3993 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 17:09:43,553 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:09:47,376 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:09:49,384 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 [] [2023-12-02 17:09:49,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:09:49,595 INFO L93 Difference]: Finished difference Result 2533 states and 4033 transitions. [2023-12-02 17:09:49,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:09:49,595 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 28 [2023-12-02 17:09:49,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:09:49,612 INFO L225 Difference]: With dead ends: 2533 [2023-12-02 17:09:49,612 INFO L226 Difference]: Without dead ends: 2529 [2023-12-02 17:09:49,613 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 [2023-12-02 17:09:49,614 INFO L413 NwaCegarLoop]: 511 mSDtfsCounter, 37 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 10 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 948 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2023-12-02 17:09:49,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 948 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 181 Invalid, 3 Unknown, 0 Unchecked, 8.0s Time] [2023-12-02 17:09:49,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2529 states. [2023-12-02 17:09:49,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2529 to 2524. [2023-12-02 17:09:49,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2524 states, 2011 states have (on average 1.557931377424167) internal successors, (3133), 2079 states have internal predecessors, (3133), 376 states have call successors, (376), 142 states have call predecessors, (376), 136 states have return successors, (510), 321 states have call predecessors, (510), 364 states have call successors, (510) [2023-12-02 17:09:49,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2524 states to 2524 states and 4019 transitions. [2023-12-02 17:09:49,742 INFO L78 Accepts]: Start accepts. Automaton has 2524 states and 4019 transitions. Word has length 28 [2023-12-02 17:09:49,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:09:49,743 INFO L495 AbstractCegarLoop]: Abstraction has 2524 states and 4019 transitions. [2023-12-02 17:09:49,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 17:09:49,743 INFO L276 IsEmpty]: Start isEmpty. Operand 2524 states and 4019 transitions. [2023-12-02 17:09:49,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-02 17:09:49,745 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:09:49,745 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] [2023-12-02 17:09:49,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-02 17:09:49,745 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:09:49,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:09:49,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1868608383, now seen corresponding path program 1 times [2023-12-02 17:09:49,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:09:49,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742616938] [2023-12-02 17:09:49,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:09:49,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:09:49,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:09:50,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:09:50,335 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:09:50,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742616938] [2023-12-02 17:09:50,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742616938] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:09:50,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:09:50,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 17:09:50,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172638341] [2023-12-02 17:09:50,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:09:50,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:09:50,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:09:50,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:09:50,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:09:50,337 INFO L87 Difference]: Start difference. First operand 2524 states and 4019 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 17:09:53,729 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 [] [2023-12-02 17:09:55,761 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:09:57,853 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:09:58,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:09:58,882 INFO L93 Difference]: Finished difference Result 2708 states and 4285 transitions. [2023-12-02 17:09:58,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 17:09:58,883 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 30 [2023-12-02 17:09:58,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:09:58,896 INFO L225 Difference]: With dead ends: 2708 [2023-12-02 17:09:58,896 INFO L226 Difference]: Without dead ends: 2633 [2023-12-02 17:09:58,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 17:09:58,897 INFO L413 NwaCegarLoop]: 565 mSDtfsCounter, 1086 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 159 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1089 SdHoareTripleChecker+Valid, 842 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2023-12-02 17:09:58,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1089 Valid, 842 Invalid, 529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 367 Invalid, 3 Unknown, 0 Unchecked, 8.4s Time] [2023-12-02 17:09:58,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2633 states. [2023-12-02 17:09:58,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2633 to 2518. [2023-12-02 17:09:58,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2518 states, 2005 states have (on average 1.5556109725685785) internal successors, (3119), 2073 states have internal predecessors, (3119), 376 states have call successors, (376), 142 states have call predecessors, (376), 136 states have return successors, (510), 321 states have call predecessors, (510), 364 states have call successors, (510) [2023-12-02 17:09:58,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2518 states to 2518 states and 4005 transitions. [2023-12-02 17:09:58,991 INFO L78 Accepts]: Start accepts. Automaton has 2518 states and 4005 transitions. Word has length 30 [2023-12-02 17:09:58,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:09:58,991 INFO L495 AbstractCegarLoop]: Abstraction has 2518 states and 4005 transitions. [2023-12-02 17:09:58,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 17:09:58,992 INFO L276 IsEmpty]: Start isEmpty. Operand 2518 states and 4005 transitions. [2023-12-02 17:09:58,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-02 17:09:58,993 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:09:58,993 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, 1, 1, 1] [2023-12-02 17:09:58,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-02 17:09:58,993 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:09:58,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:09:58,994 INFO L85 PathProgramCache]: Analyzing trace with hash 794772412, now seen corresponding path program 1 times [2023-12-02 17:09:58,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:09:58,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477035228] [2023-12-02 17:09:58,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:09:58,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:09:59,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:09:59,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:09:59,449 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:09:59,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477035228] [2023-12-02 17:09:59,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477035228] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:09:59,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:09:59,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 17:09:59,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176430735] [2023-12-02 17:09:59,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:09:59,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 17:09:59,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:09:59,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 17:09:59,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 17:09:59,451 INFO L87 Difference]: Start difference. First operand 2518 states and 4005 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 17:10:01,587 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:10:05,918 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:10:07,954 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:10:09,961 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:10:11,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:10:11,030 INFO L93 Difference]: Finished difference Result 3243 states and 5224 transitions. [2023-12-02 17:10:11,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 17:10:11,030 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) Word has length 33 [2023-12-02 17:10:11,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:10:11,048 INFO L225 Difference]: With dead ends: 3243 [2023-12-02 17:10:11,048 INFO L226 Difference]: Without dead ends: 3235 [2023-12-02 17:10:11,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-02 17:10:11,050 INFO L413 NwaCegarLoop]: 755 mSDtfsCounter, 1072 mSDsluCounter, 636 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 167 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1088 SdHoareTripleChecker+Valid, 1391 SdHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2023-12-02 17:10:11,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1088 Valid, 1391 Invalid, 748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 577 Invalid, 4 Unknown, 0 Unchecked, 11.4s Time] [2023-12-02 17:10:11,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3235 states. [2023-12-02 17:10:11,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3235 to 3143. [2023-12-02 17:10:11,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3143 states, 2534 states have (on average 1.568666140489345) internal successors, (3975), 2603 states have internal predecessors, (3975), 444 states have call successors, (444), 172 states have call predecessors, (444), 164 states have return successors, (615), 386 states have call predecessors, (615), 432 states have call successors, (615) [2023-12-02 17:10:11,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3143 states to 3143 states and 5034 transitions. [2023-12-02 17:10:11,242 INFO L78 Accepts]: Start accepts. Automaton has 3143 states and 5034 transitions. Word has length 33 [2023-12-02 17:10:11,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:10:11,243 INFO L495 AbstractCegarLoop]: Abstraction has 3143 states and 5034 transitions. [2023-12-02 17:10:11,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 17:10:11,243 INFO L276 IsEmpty]: Start isEmpty. Operand 3143 states and 5034 transitions. [2023-12-02 17:10:11,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-02 17:10:11,245 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:10:11,245 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, 1, 1, 1, 1] [2023-12-02 17:10:11,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-02 17:10:11,245 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:10:11,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:10:11,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1575367815, now seen corresponding path program 1 times [2023-12-02 17:10:11,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:10:11,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878301964] [2023-12-02 17:10:11,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:10:11,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:10:11,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:10:11,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:10:11,768 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:10:11,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878301964] [2023-12-02 17:10:11,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878301964] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:10:11,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:10:11,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 17:10:11,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798056751] [2023-12-02 17:10:11,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:10:11,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 17:10:11,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:10:11,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 17:10:11,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 17:10:11,771 INFO L87 Difference]: Start difference. First operand 3143 states and 5034 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 17:10:13,423 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:10:17,211 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:10:19,216 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:10:21,238 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:10:22,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:10:22,587 INFO L93 Difference]: Finished difference Result 3236 states and 5212 transitions. [2023-12-02 17:10:22,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 17:10:22,588 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) Word has length 34 [2023-12-02 17:10:22,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:10:22,605 INFO L225 Difference]: With dead ends: 3236 [2023-12-02 17:10:22,605 INFO L226 Difference]: Without dead ends: 3231 [2023-12-02 17:10:22,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-02 17:10:22,607 INFO L413 NwaCegarLoop]: 754 mSDtfsCounter, 1063 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 164 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1079 SdHoareTripleChecker+Valid, 1388 SdHoareTripleChecker+Invalid, 743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 576 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2023-12-02 17:10:22,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1079 Valid, 1388 Invalid, 743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 576 Invalid, 3 Unknown, 0 Unchecked, 10.6s Time] [2023-12-02 17:10:22,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3231 states. [2023-12-02 17:10:22,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3231 to 3143. [2023-12-02 17:10:22,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3143 states, 2534 states have (on average 1.568271507498027) internal successors, (3974), 2603 states have internal predecessors, (3974), 444 states have call successors, (444), 172 states have call predecessors, (444), 164 states have return successors, (615), 386 states have call predecessors, (615), 432 states have call successors, (615) [2023-12-02 17:10:22,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3143 states to 3143 states and 5033 transitions. [2023-12-02 17:10:22,846 INFO L78 Accepts]: Start accepts. Automaton has 3143 states and 5033 transitions. Word has length 34 [2023-12-02 17:10:22,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:10:22,847 INFO L495 AbstractCegarLoop]: Abstraction has 3143 states and 5033 transitions. [2023-12-02 17:10:22,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 17:10:22,847 INFO L276 IsEmpty]: Start isEmpty. Operand 3143 states and 5033 transitions. [2023-12-02 17:10:22,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-02 17:10:22,849 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:10:22,849 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, 1, 1, 1, 1, 1, 1] [2023-12-02 17:10:22,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-02 17:10:22,849 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:10:22,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:10:22,850 INFO L85 PathProgramCache]: Analyzing trace with hash 939757453, now seen corresponding path program 1 times [2023-12-02 17:10:22,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:10:22,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13680902] [2023-12-02 17:10:22,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:10:22,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:10:23,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:10:23,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:10:23,731 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:10:23,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13680902] [2023-12-02 17:10:23,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13680902] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:10:23,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:10:23,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 17:10:23,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047382387] [2023-12-02 17:10:23,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:10:23,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:10:23,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:10:23,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:10:23,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:10:23,733 INFO L87 Difference]: Start difference. First operand 3143 states and 5033 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 17:10:25,917 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:10:27,356 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:10:30,554 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:10:32,579 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:10:34,599 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 [] [2023-12-02 17:10:34,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:10:34,939 INFO L93 Difference]: Finished difference Result 6315 states and 10213 transitions. [2023-12-02 17:10:34,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 17:10:34,940 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 36 [2023-12-02 17:10:34,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:10:34,965 INFO L225 Difference]: With dead ends: 6315 [2023-12-02 17:10:34,965 INFO L226 Difference]: Without dead ends: 3160 [2023-12-02 17:10:34,984 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 17:10:34,985 INFO L413 NwaCegarLoop]: 508 mSDtfsCounter, 1 mSDsluCounter, 1012 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1520 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2023-12-02 17:10:34,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1520 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 200 Invalid, 4 Unknown, 0 Unchecked, 11.0s Time] [2023-12-02 17:10:34,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3160 states. [2023-12-02 17:10:35,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3160 to 3160. [2023-12-02 17:10:35,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3160 states, 2551 states have (on average 1.564484515876127) internal successors, (3991), 2620 states have internal predecessors, (3991), 444 states have call successors, (444), 172 states have call predecessors, (444), 164 states have return successors, (615), 386 states have call predecessors, (615), 432 states have call successors, (615) [2023-12-02 17:10:35,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3160 states to 3160 states and 5050 transitions. [2023-12-02 17:10:35,173 INFO L78 Accepts]: Start accepts. Automaton has 3160 states and 5050 transitions. Word has length 36 [2023-12-02 17:10:35,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:10:35,173 INFO L495 AbstractCegarLoop]: Abstraction has 3160 states and 5050 transitions. [2023-12-02 17:10:35,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 17:10:35,173 INFO L276 IsEmpty]: Start isEmpty. Operand 3160 states and 5050 transitions. [2023-12-02 17:10:35,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-02 17:10:35,174 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:10:35,174 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, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:10:35,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-02 17:10:35,175 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:10:35,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:10:35,175 INFO L85 PathProgramCache]: Analyzing trace with hash -923688630, now seen corresponding path program 1 times [2023-12-02 17:10:35,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:10:35,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636062763] [2023-12-02 17:10:35,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:10:35,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:10:35,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:10:35,838 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:10:35,838 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:10:35,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636062763] [2023-12-02 17:10:35,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636062763] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 17:10:35,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276043979] [2023-12-02 17:10:35,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:10:35,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:10:35,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62cff51d-36f1-44be-87b4-b43e3cd74802/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:10:35,840 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62cff51d-36f1-44be-87b4-b43e3cd74802/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:10:35,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62cff51d-36f1-44be-87b4-b43e3cd74802/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 17:10:36,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:10:36,803 INFO L262 TraceCheckSpWp]: Trace formula consists of 2275 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 17:10:36,811 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:10:36,854 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:10:36,854 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:10:36,934 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:10:36,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1276043979] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:10:36,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1687959287] [2023-12-02 17:10:36,956 INFO L159 IcfgInterpreter]: Started Sifa with 37 locations of interest [2023-12-02 17:10:36,956 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:10:36,959 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 17:10:36,964 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 17:10:36,965 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 17:12:17,636 WARN L293 SmtUtils]: Spent 6.24s on a formula simplification. DAG size of input: 2371 DAG size of output: 2363 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-12-02 17:12:32,326 WARN L293 SmtUtils]: Spent 6.04s on a formula simplification. DAG size of input: 2371 DAG size of output: 2363 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-12-02 17:16:24,043 WARN L293 SmtUtils]: Spent 5.39s on a formula simplification that was a NOOP. DAG size: 2433 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-02 17:19:16,705 WARN L293 SmtUtils]: Spent 5.07s on a formula simplification. DAG size of input: 2494 DAG size of output: 2493 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)