./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-media-usb-gspca-gspca_xirlink_cit.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_9be3a32e-e194-415d-910e-61f1523821e5/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be3a32e-e194-415d-910e-61f1523821e5/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be3a32e-e194-415d-910e-61f1523821e5/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be3a32e-e194-415d-910e-61f1523821e5/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-media-usb-gspca-gspca_xirlink_cit.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be3a32e-e194-415d-910e-61f1523821e5/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be3a32e-e194-415d-910e-61f1523821e5/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash da295a433f96a090e97fd0ee72a58f7ad7a804da074c3950d4e4dc7d412af0ef --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 02:01:29,736 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:01:29,738 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:01:29,780 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:01:29,780 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:01:29,786 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:01:29,788 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:01:29,791 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:01:29,797 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:01:29,804 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:01:29,805 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:01:29,806 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:01:29,807 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:01:29,809 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:01:29,811 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:01:29,813 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:01:29,816 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:01:29,817 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:01:29,818 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:01:29,825 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:01:29,827 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:01:29,829 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:01:29,833 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:01:29,834 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:01:29,840 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:01:29,840 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:01:29,840 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:01:29,843 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:01:29,843 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:01:29,844 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:01:29,845 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:01:29,846 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:01:29,848 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:01:29,850 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:01:29,851 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:01:29,851 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:01:29,852 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:01:29,852 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:01:29,852 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:01:29,853 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:01:29,854 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:01:29,855 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be3a32e-e194-415d-910e-61f1523821e5/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 02:01:29,896 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:01:29,900 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:01:29,901 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:01:29,901 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:01:29,902 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:01:29,902 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:01:29,903 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:01:29,903 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:01:29,903 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:01:29,903 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:01:29,904 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:01:29,905 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:01:29,905 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:01:29,905 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:01:29,905 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:01:29,906 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:01:29,906 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:01:29,906 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:01:29,907 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:01:29,907 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:01:29,907 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:01:29,908 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:01:29,908 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:01:29,908 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:01:29,908 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:01:29,908 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:01:29,909 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:01:29,909 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:01:29,909 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:01:29,909 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:01:29,910 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:01:29,910 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:01:29,910 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:01:29,910 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:01:29,911 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:01:29,911 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:01:29,911 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:01:29,911 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:01:29,912 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be3a32e-e194-415d-910e-61f1523821e5/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be3a32e-e194-415d-910e-61f1523821e5/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> da295a433f96a090e97fd0ee72a58f7ad7a804da074c3950d4e4dc7d412af0ef [2022-11-03 02:01:30,247 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:01:30,278 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:01:30,281 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:01:30,283 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:01:30,283 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:01:30,285 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be3a32e-e194-415d-910e-61f1523821e5/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-media-usb-gspca-gspca_xirlink_cit.cil.i [2022-11-03 02:01:30,375 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be3a32e-e194-415d-910e-61f1523821e5/bin/utaipan-7li7fVZpFI/data/ccf5bb2bc/f9edbf44c4dd463288e40dcc1a4e35a5/FLAGdaea0c1c2 [2022-11-03 02:01:31,356 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:01:31,357 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be3a32e-e194-415d-910e-61f1523821e5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-media-usb-gspca-gspca_xirlink_cit.cil.i [2022-11-03 02:01:31,396 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be3a32e-e194-415d-910e-61f1523821e5/bin/utaipan-7li7fVZpFI/data/ccf5bb2bc/f9edbf44c4dd463288e40dcc1a4e35a5/FLAGdaea0c1c2 [2022-11-03 02:01:31,898 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be3a32e-e194-415d-910e-61f1523821e5/bin/utaipan-7li7fVZpFI/data/ccf5bb2bc/f9edbf44c4dd463288e40dcc1a4e35a5 [2022-11-03 02:01:31,901 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:01:31,904 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:01:31,905 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:01:31,905 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:01:31,910 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:01:31,911 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:01:31" (1/1) ... [2022-11-03 02:01:31,912 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e943263 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:01:31, skipping insertion in model container [2022-11-03 02:01:31,912 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:01:31" (1/1) ... [2022-11-03 02:01:31,921 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:01:32,079 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:01:33,885 WARN L230 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_9be3a32e-e194-415d-910e-61f1523821e5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-media-usb-gspca-gspca_xirlink_cit.cil.i[277615,277628] [2022-11-03 02:01:33,889 WARN L230 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_9be3a32e-e194-415d-910e-61f1523821e5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-media-usb-gspca-gspca_xirlink_cit.cil.i[277762,277775] [2022-11-03 02:01:33,889 WARN L230 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_9be3a32e-e194-415d-910e-61f1523821e5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-media-usb-gspca-gspca_xirlink_cit.cil.i[277901,277914] [2022-11-03 02:01:33,890 WARN L230 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_9be3a32e-e194-415d-910e-61f1523821e5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-media-usb-gspca-gspca_xirlink_cit.cil.i[278059,278072] [2022-11-03 02:01:33,907 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:01:34,039 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:01:34,370 WARN L230 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_9be3a32e-e194-415d-910e-61f1523821e5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-media-usb-gspca-gspca_xirlink_cit.cil.i[277615,277628] [2022-11-03 02:01:34,371 WARN L230 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_9be3a32e-e194-415d-910e-61f1523821e5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-media-usb-gspca-gspca_xirlink_cit.cil.i[277762,277775] [2022-11-03 02:01:34,372 WARN L230 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_9be3a32e-e194-415d-910e-61f1523821e5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-media-usb-gspca-gspca_xirlink_cit.cil.i[277901,277914] [2022-11-03 02:01:34,372 WARN L230 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_9be3a32e-e194-415d-910e-61f1523821e5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-media-usb-gspca-gspca_xirlink_cit.cil.i[278059,278072] [2022-11-03 02:01:34,379 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:01:34,568 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:01:34,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:01:34 WrapperNode [2022-11-03 02:01:34,569 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:01:34,570 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:01:34,570 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:01:34,571 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:01:34,579 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:01:34" (1/1) ... [2022-11-03 02:01:34,667 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:01:34" (1/1) ... [2022-11-03 02:01:34,892 INFO L138 Inliner]: procedures = 202, calls = 3694, calls flagged for inlining = 99, calls inlined = 91, statements flattened = 6973 [2022-11-03 02:01:34,893 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:01:34,894 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:01:34,894 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:01:34,895 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:01:34,905 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:01:34" (1/1) ... [2022-11-03 02:01:34,905 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:01:34" (1/1) ... [2022-11-03 02:01:34,974 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:01:34" (1/1) ... [2022-11-03 02:01:34,976 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:01:34" (1/1) ... [2022-11-03 02:01:35,108 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:01:34" (1/1) ... [2022-11-03 02:01:35,122 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:01:34" (1/1) ... [2022-11-03 02:01:35,145 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:01:34" (1/1) ... [2022-11-03 02:01:35,161 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:01:34" (1/1) ... [2022-11-03 02:01:35,204 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:01:35,205 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:01:35,205 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:01:35,205 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:01:35,219 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:01:34" (1/1) ... [2022-11-03 02:01:35,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:01:35,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be3a32e-e194-415d-910e-61f1523821e5/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:01:35,262 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be3a32e-e194-415d-910e-61f1523821e5/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:01:35,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be3a32e-e194-415d-910e-61f1523821e5/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:01:35,324 INFO L130 BoogieDeclarations]: Found specification of procedure sd_isoc_init [2022-11-03 02:01:35,324 INFO L138 BoogieDeclarations]: Found implementation of procedure sd_isoc_init [2022-11-03 02:01:35,324 INFO L130 BoogieDeclarations]: Found specification of procedure cit_check_button [2022-11-03 02:01:35,325 INFO L138 BoogieDeclarations]: Found implementation of procedure cit_check_button [2022-11-03 02:01:35,325 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 02:01:35,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 02:01:35,325 INFO L130 BoogieDeclarations]: Found specification of procedure cit_send_x_01_00_05 [2022-11-03 02:01:35,325 INFO L138 BoogieDeclarations]: Found implementation of procedure cit_send_x_01_00_05 [2022-11-03 02:01:35,326 INFO L130 BoogieDeclarations]: Found specification of procedure cit_send_x_00_05 [2022-11-03 02:01:35,326 INFO L138 BoogieDeclarations]: Found implementation of procedure cit_send_x_00_05 [2022-11-03 02:01:35,326 INFO L130 BoogieDeclarations]: Found specification of procedure cit_PacketFormat2 [2022-11-03 02:01:35,326 INFO L138 BoogieDeclarations]: Found implementation of procedure cit_PacketFormat2 [2022-11-03 02:01:35,326 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 02:01:35,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 02:01:35,327 INFO L130 BoogieDeclarations]: Found specification of procedure sd_start [2022-11-03 02:01:35,327 INFO L138 BoogieDeclarations]: Found implementation of procedure sd_start [2022-11-03 02:01:35,327 INFO L130 BoogieDeclarations]: Found specification of procedure cit_send_x_00 [2022-11-03 02:01:35,327 INFO L138 BoogieDeclarations]: Found implementation of procedure cit_send_x_00 [2022-11-03 02:01:35,327 INFO L130 BoogieDeclarations]: Found specification of procedure sd_isoc_nego [2022-11-03 02:01:35,328 INFO L138 BoogieDeclarations]: Found implementation of procedure sd_isoc_nego [2022-11-03 02:01:35,328 INFO L130 BoogieDeclarations]: Found specification of procedure gspca_frame_add [2022-11-03 02:01:35,328 INFO L138 BoogieDeclarations]: Found implementation of procedure gspca_frame_add [2022-11-03 02:01:35,328 INFO L130 BoogieDeclarations]: Found specification of procedure cit_model2_Packet1 [2022-11-03 02:01:35,395 INFO L138 BoogieDeclarations]: Found implementation of procedure cit_model2_Packet1 [2022-11-03 02:01:35,395 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:01:35,395 INFO L130 BoogieDeclarations]: Found specification of procedure input_event [2022-11-03 02:01:35,395 INFO L138 BoogieDeclarations]: Found implementation of procedure input_event [2022-11-03 02:01:35,395 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 02:01:35,396 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-03 02:01:35,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-03 02:01:35,396 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_new_std [2022-11-03 02:01:35,396 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_new_std [2022-11-03 02:01:35,396 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-03 02:01:35,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-03 02:01:35,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:01:35,396 INFO L130 BoogieDeclarations]: Found specification of procedure cit_read_reg [2022-11-03 02:01:35,397 INFO L138 BoogieDeclarations]: Found implementation of procedure cit_read_reg [2022-11-03 02:01:35,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 02:01:35,397 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-03 02:01:35,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-03 02:01:35,397 INFO L130 BoogieDeclarations]: Found specification of procedure cit_get_packet_size [2022-11-03 02:01:35,397 INFO L138 BoogieDeclarations]: Found implementation of procedure cit_get_packet_size [2022-11-03 02:01:35,397 INFO L130 BoogieDeclarations]: Found specification of procedure usb_clear_halt [2022-11-03 02:01:35,398 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_clear_halt [2022-11-03 02:01:35,398 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_key [2022-11-03 02:01:35,398 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_key [2022-11-03 02:01:35,398 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-03 02:01:35,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-03 02:01:35,398 INFO L130 BoogieDeclarations]: Found specification of procedure cit_model4_Packet1 [2022-11-03 02:01:35,398 INFO L138 BoogieDeclarations]: Found implementation of procedure cit_model4_Packet1 [2022-11-03 02:01:35,398 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_grab [2022-11-03 02:01:35,399 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_grab [2022-11-03 02:01:35,399 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 02:01:35,399 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_instance_release_2_4 [2022-11-03 02:01:35,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_instance_release_2_4 [2022-11-03 02:01:35,399 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-11-03 02:01:35,399 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-11-03 02:01:35,399 INFO L130 BoogieDeclarations]: Found specification of procedure sd_init [2022-11-03 02:01:35,400 INFO L138 BoogieDeclarations]: Found implementation of procedure sd_init [2022-11-03 02:01:35,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 02:01:35,400 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_sd_driver_exit_6_2 [2022-11-03 02:01:35,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_sd_driver_exit_6_2 [2022-11-03 02:01:35,400 INFO L130 BoogieDeclarations]: Found specification of procedure input_sync [2022-11-03 02:01:35,400 INFO L138 BoogieDeclarations]: Found implementation of procedure input_sync [2022-11-03 02:01:35,400 INFO L130 BoogieDeclarations]: Found specification of procedure gspca_disconnect [2022-11-03 02:01:35,401 INFO L138 BoogieDeclarations]: Found implementation of procedure gspca_disconnect [2022-11-03 02:01:35,401 INFO L130 BoogieDeclarations]: Found specification of procedure cit_restart_stream [2022-11-03 02:01:35,401 INFO L138 BoogieDeclarations]: Found implementation of procedure cit_restart_stream [2022-11-03 02:01:35,401 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 02:01:35,404 INFO L130 BoogieDeclarations]: Found specification of procedure gspca_resume [2022-11-03 02:01:35,404 INFO L138 BoogieDeclarations]: Found implementation of procedure gspca_resume [2022-11-03 02:01:35,404 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-03 02:01:35,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-03 02:01:35,405 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:01:35,406 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-03 02:01:35,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-03 02:01:35,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 02:01:35,406 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-03 02:01:35,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-03 02:01:35,406 INFO L130 BoogieDeclarations]: Found specification of procedure cit_write_reg [2022-11-03 02:01:35,407 INFO L138 BoogieDeclarations]: Found implementation of procedure cit_write_reg [2022-11-03 02:01:35,408 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2022-11-03 02:01:35,408 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2022-11-03 02:01:35,408 INFO L130 BoogieDeclarations]: Found specification of procedure sd_stopN [2022-11-03 02:01:35,408 INFO L138 BoogieDeclarations]: Found implementation of procedure sd_stopN [2022-11-03 02:01:35,408 INFO L130 BoogieDeclarations]: Found specification of procedure sd_s_ctrl [2022-11-03 02:01:35,409 INFO L138 BoogieDeclarations]: Found implementation of procedure sd_s_ctrl [2022-11-03 02:01:35,409 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_g_ctrl [2022-11-03 02:01:35,410 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_g_ctrl [2022-11-03 02:01:35,410 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-03 02:01:35,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-03 02:01:35,410 INFO L130 BoogieDeclarations]: Found specification of procedure sd_stop0 [2022-11-03 02:01:35,410 INFO L138 BoogieDeclarations]: Found implementation of procedure sd_stop0 [2022-11-03 02:01:35,411 INFO L130 BoogieDeclarations]: Found specification of procedure cit_get_clock_div [2022-11-03 02:01:35,411 INFO L138 BoogieDeclarations]: Found implementation of procedure cit_get_clock_div [2022-11-03 02:01:35,411 INFO L130 BoogieDeclarations]: Found specification of procedure cit_model3_Packet1 [2022-11-03 02:01:35,411 INFO L138 BoogieDeclarations]: Found implementation of procedure cit_model3_Packet1 [2022-11-03 02:01:35,412 INFO L130 BoogieDeclarations]: Found specification of procedure cit_Packet_Format1 [2022-11-03 02:01:35,412 INFO L138 BoogieDeclarations]: Found implementation of procedure cit_Packet_Format1 [2022-11-03 02:01:35,412 INFO L130 BoogieDeclarations]: Found specification of procedure sd_init_controls [2022-11-03 02:01:35,412 INFO L138 BoogieDeclarations]: Found implementation of procedure sd_init_controls [2022-11-03 02:01:35,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:01:35,413 INFO L130 BoogieDeclarations]: Found specification of procedure cit_send_FF_04_02 [2022-11-03 02:01:35,413 INFO L138 BoogieDeclarations]: Found implementation of procedure cit_send_FF_04_02 [2022-11-03 02:01:35,414 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-03 02:01:35,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-03 02:01:35,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:01:35,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:01:36,131 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:01:36,134 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:01:36,359 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 02:01:45,787 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-03 02:01:46,126 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:01:47,250 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:01:47,257 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 02:01:47,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:01:47 BoogieIcfgContainer [2022-11-03 02:01:47,263 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:01:47,267 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:01:47,267 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:01:47,270 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:01:47,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:01:31" (1/3) ... [2022-11-03 02:01:47,271 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a520ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:01:47, skipping insertion in model container [2022-11-03 02:01:47,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:01:34" (2/3) ... [2022-11-03 02:01:47,272 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a520ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:01:47, skipping insertion in model container [2022-11-03 02:01:47,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:01:47" (3/3) ... [2022-11-03 02:01:47,275 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-usb-dev_drivers-media-usb-gspca-gspca_xirlink_cit.cil.i [2022-11-03 02:01:47,295 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:01:47,295 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-03 02:01:47,426 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:01:47,435 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=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@10ae4543, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:01:47,435 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-03 02:01:47,448 INFO L276 IsEmpty]: Start isEmpty. Operand has 2449 states, 1187 states have (on average 1.2080876158382476) internal successors, (1434), 1204 states have internal predecessors, (1434), 1213 states have call successors, (1213), 48 states have call predecessors, (1213), 47 states have return successors, (1207), 1200 states have call predecessors, (1207), 1207 states have call successors, (1207) [2022-11-03 02:01:47,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-03 02:01:47,479 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:01:47,480 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:01:47,481 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:01:47,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:01:47,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1200665609, now seen corresponding path program 1 times [2022-11-03 02:01:47,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:01:47,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120892702] [2022-11-03 02:01:47,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:01:47,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:01:48,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:01:48,727 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2022-11-03 02:01:48,728 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:01:48,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120892702] [2022-11-03 02:01:48,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120892702] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:01:48,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:01:48,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:01:48,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992039911] [2022-11-03 02:01:48,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:01:48,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:01:48,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:01:48,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:01:48,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:01:48,784 INFO L87 Difference]: Start difference. First operand has 2449 states, 1187 states have (on average 1.2080876158382476) internal successors, (1434), 1204 states have internal predecessors, (1434), 1213 states have call successors, (1213), 48 states have call predecessors, (1213), 47 states have return successors, (1207), 1200 states have call predecessors, (1207), 1207 states have call successors, (1207) Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-03 02:01:50,954 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:01:53,213 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:01:55,317 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:01:57,603 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 [] [2022-11-03 02:01:58,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:01:58,581 INFO L93 Difference]: Finished difference Result 7181 states and 11328 transitions. [2022-11-03 02:01:58,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:01:58,583 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 103 [2022-11-03 02:01:58,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:01:58,674 INFO L225 Difference]: With dead ends: 7181 [2022-11-03 02:01:58,674 INFO L226 Difference]: Without dead ends: 4739 [2022-11-03 02:01:58,717 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 [2022-11-03 02:01:58,722 INFO L413 NwaCegarLoop]: 4819 mSDtfsCounter, 3693 mSDsluCounter, 3749 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 9 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3695 SdHoareTripleChecker+Valid, 8414 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:01:58,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3695 Valid, 8414 Invalid, 368 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 356 Invalid, 3 Unknown, 0 Unchecked, 9.2s Time] [2022-11-03 02:01:58,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4739 states. [2022-11-03 02:02:00,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4739 to 4737. [2022-11-03 02:02:00,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4737 states, 2287 states have (on average 1.1967643200699607) internal successors, (2737), 2318 states have internal predecessors, (2737), 2357 states have call successors, (2357), 92 states have call predecessors, (2357), 91 states have return successors, (2356), 2340 states have call predecessors, (2356), 2354 states have call successors, (2356) [2022-11-03 02:02:00,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4737 states to 4737 states and 7450 transitions. [2022-11-03 02:02:00,556 INFO L78 Accepts]: Start accepts. Automaton has 4737 states and 7450 transitions. Word has length 103 [2022-11-03 02:02:00,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:02:00,557 INFO L495 AbstractCegarLoop]: Abstraction has 4737 states and 7450 transitions. [2022-11-03 02:02:00,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-03 02:02:00,558 INFO L276 IsEmpty]: Start isEmpty. Operand 4737 states and 7450 transitions. [2022-11-03 02:02:00,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-11-03 02:02:00,568 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:02:00,568 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:02:00,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:02:00,569 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:02:00,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:02:00,569 INFO L85 PathProgramCache]: Analyzing trace with hash -796856215, now seen corresponding path program 1 times [2022-11-03 02:02:00,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:02:00,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47868241] [2022-11-03 02:02:00,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:02:00,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:02:00,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:02:01,225 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2022-11-03 02:02:01,225 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:02:01,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47868241] [2022-11-03 02:02:01,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47868241] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:02:01,226 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:02:01,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:02:01,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055080998] [2022-11-03 02:02:01,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:02:01,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:02:01,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:02:01,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:02:01,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:02:01,229 INFO L87 Difference]: Start difference. First operand 4737 states and 7450 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-03 02:02:03,380 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 [] [2022-11-03 02:02:05,379 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:02:07,519 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:02:09,694 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 [] [2022-11-03 02:02:10,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:02:10,970 INFO L93 Difference]: Finished difference Result 13967 states and 21990 transitions. [2022-11-03 02:02:10,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:02:10,972 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 157 [2022-11-03 02:02:10,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:02:11,088 INFO L225 Difference]: With dead ends: 13967 [2022-11-03 02:02:11,088 INFO L226 Difference]: Without dead ends: 9247 [2022-11-03 02:02:11,155 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 [2022-11-03 02:02:11,156 INFO L413 NwaCegarLoop]: 4955 mSDtfsCounter, 3568 mSDsluCounter, 3743 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 16 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3569 SdHoareTripleChecker+Valid, 8546 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:02:11,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3569 Valid, 8546 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 365 Invalid, 3 Unknown, 0 Unchecked, 8.9s Time] [2022-11-03 02:02:11,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9247 states. [2022-11-03 02:02:13,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9247 to 9236. [2022-11-03 02:02:13,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9236 states, 4425 states have (on average 1.1884745762711864) internal successors, (5259), 4491 states have internal predecessors, (5259), 4636 states have call successors, (4636), 174 states have call predecessors, (4636), 173 states have return successors, (4638), 4598 states have call predecessors, (4638), 4633 states have call successors, (4638) [2022-11-03 02:02:14,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9236 states to 9236 states and 14533 transitions. [2022-11-03 02:02:14,003 INFO L78 Accepts]: Start accepts. Automaton has 9236 states and 14533 transitions. Word has length 157 [2022-11-03 02:02:14,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:02:14,005 INFO L495 AbstractCegarLoop]: Abstraction has 9236 states and 14533 transitions. [2022-11-03 02:02:14,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-03 02:02:14,008 INFO L276 IsEmpty]: Start isEmpty. Operand 9236 states and 14533 transitions. [2022-11-03 02:02:14,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-11-03 02:02:14,022 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:02:14,022 INFO L195 NwaCegarLoop]: trace histogram [12, 8, 8, 8, 8, 8, 8, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:02:14,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:02:14,024 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:02:14,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:02:14,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1320808926, now seen corresponding path program 1 times [2022-11-03 02:02:14,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:02:14,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84771902] [2022-11-03 02:02:14,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:02:14,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:02:14,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:02:15,295 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 335 trivial. 0 not checked. [2022-11-03 02:02:15,295 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:02:15,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84771902] [2022-11-03 02:02:15,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84771902] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:02:15,298 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:02:15,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:02:15,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845518011] [2022-11-03 02:02:15,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:02:15,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:02:15,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:02:15,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:02:15,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:02:15,300 INFO L87 Difference]: Start difference. First operand 9236 states and 14533 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-03 02:02:18,383 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 [] [2022-11-03 02:02:20,823 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:02:23,020 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:02:23,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:02:23,983 INFO L93 Difference]: Finished difference Result 9347 states and 14677 transitions. [2022-11-03 02:02:23,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:02:23,984 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 148 [2022-11-03 02:02:23,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:02:24,105 INFO L225 Difference]: With dead ends: 9347 [2022-11-03 02:02:24,106 INFO L226 Difference]: Without dead ends: 9322 [2022-11-03 02:02:24,125 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 [2022-11-03 02:02:24,129 INFO L413 NwaCegarLoop]: 3635 mSDtfsCounter, 3712 mSDsluCounter, 3893 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3714 SdHoareTripleChecker+Valid, 7354 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:02:24,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3714 Valid, 7354 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 342 Invalid, 3 Unknown, 0 Unchecked, 8.1s Time] [2022-11-03 02:02:24,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9322 states. [2022-11-03 02:02:26,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9322 to 9322. [2022-11-03 02:02:26,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9322 states, 4485 states have (on average 1.187736900780379) internal successors, (5327), 4547 states have internal predecessors, (5327), 4651 states have call successors, (4651), 183 states have call predecessors, (4651), 185 states have return successors, (4659), 4619 states have call predecessors, (4659), 4651 states have call successors, (4659) [2022-11-03 02:02:26,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9322 states to 9322 states and 14637 transitions. [2022-11-03 02:02:26,953 INFO L78 Accepts]: Start accepts. Automaton has 9322 states and 14637 transitions. Word has length 148 [2022-11-03 02:02:26,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:02:26,953 INFO L495 AbstractCegarLoop]: Abstraction has 9322 states and 14637 transitions. [2022-11-03 02:02:26,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-03 02:02:26,954 INFO L276 IsEmpty]: Start isEmpty. Operand 9322 states and 14637 transitions. [2022-11-03 02:02:26,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-03 02:02:26,964 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:02:26,964 INFO L195 NwaCegarLoop]: trace histogram [10, 8, 8, 8, 8, 8, 8, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:02:26,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:02:26,965 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:02:26,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:02:26,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1899393976, now seen corresponding path program 1 times [2022-11-03 02:02:26,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:02:26,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658883860] [2022-11-03 02:02:26,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:02:26,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:02:27,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:02:27,519 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2022-11-03 02:02:27,520 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:02:27,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658883860] [2022-11-03 02:02:27,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658883860] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:02:27,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:02:27,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:02:27,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109398160] [2022-11-03 02:02:27,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:02:27,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:02:27,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:02:27,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:02:27,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:02:27,524 INFO L87 Difference]: Start difference. First operand 9322 states and 14637 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-03 02:02:29,729 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:02:31,823 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:02:34,058 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:02:36,538 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:02:37,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:02:37,374 INFO L93 Difference]: Finished difference Result 19289 states and 30202 transitions. [2022-11-03 02:02:37,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:02:37,375 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 167 [2022-11-03 02:02:37,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:02:37,466 INFO L225 Difference]: With dead ends: 19289 [2022-11-03 02:02:37,466 INFO L226 Difference]: Without dead ends: 9984 [2022-11-03 02:02:37,580 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 [2022-11-03 02:02:37,581 INFO L413 NwaCegarLoop]: 4852 mSDtfsCounter, 3545 mSDsluCounter, 3715 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 7 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3547 SdHoareTripleChecker+Valid, 8422 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:02:37,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3547 Valid, 8422 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 358 Invalid, 4 Unknown, 0 Unchecked, 9.0s Time] [2022-11-03 02:02:37,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9984 states. [2022-11-03 02:02:40,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9984 to 9978. [2022-11-03 02:02:40,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9978 states, 4866 states have (on average 1.1884504726674887) internal successors, (5783), 4946 states have internal predecessors, (5783), 4885 states have call successors, (4885), 224 states have call predecessors, (4885), 226 states have return successors, (4897), 4843 states have call predecessors, (4897), 4885 states have call successors, (4897) [2022-11-03 02:02:40,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9978 states to 9978 states and 15565 transitions. [2022-11-03 02:02:40,636 INFO L78 Accepts]: Start accepts. Automaton has 9978 states and 15565 transitions. Word has length 167 [2022-11-03 02:02:40,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:02:40,638 INFO L495 AbstractCegarLoop]: Abstraction has 9978 states and 15565 transitions. [2022-11-03 02:02:40,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-03 02:02:40,638 INFO L276 IsEmpty]: Start isEmpty. Operand 9978 states and 15565 transitions. [2022-11-03 02:02:40,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-11-03 02:02:40,647 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:02:40,647 INFO L195 NwaCegarLoop]: trace histogram [10, 8, 8, 8, 8, 8, 8, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:02:40,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 02:02:40,647 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:02:40,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:02:40,648 INFO L85 PathProgramCache]: Analyzing trace with hash -572571958, now seen corresponding path program 1 times [2022-11-03 02:02:40,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:02:40,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016752048] [2022-11-03 02:02:40,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:02:40,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:02:40,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:02:41,260 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 348 trivial. 0 not checked. [2022-11-03 02:02:41,260 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:02:41,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016752048] [2022-11-03 02:02:41,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016752048] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:02:41,263 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:02:41,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:02:41,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866753893] [2022-11-03 02:02:41,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:02:41,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:02:41,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:02:41,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:02:41,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:02:41,265 INFO L87 Difference]: Start difference. First operand 9978 states and 15565 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-03 02:02:43,539 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:02:45,576 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:02:47,744 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:02:50,066 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:02:52,423 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:02:54,160 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:02:56,175 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:02:58,407 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:03:02,166 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:03:11,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:03:11,646 INFO L93 Difference]: Finished difference Result 27665 states and 43144 transitions. [2022-11-03 02:03:11,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:03:11,647 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 174 [2022-11-03 02:03:11,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:03:11,779 INFO L225 Difference]: With dead ends: 27665 [2022-11-03 02:03:11,779 INFO L226 Difference]: Without dead ends: 17704 [2022-11-03 02:03:11,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:03:11,873 INFO L413 NwaCegarLoop]: 8103 mSDtfsCounter, 7371 mSDsluCounter, 8088 mSDsCounter, 0 mSdLazyCounter, 5439 mSolverCounterSat, 43 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7412 SdHoareTripleChecker+Valid, 15702 SdHoareTripleChecker+Invalid, 5489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 5439 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:03:11,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7412 Valid, 15702 Invalid, 5489 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [43 Valid, 5439 Invalid, 7 Unknown, 0 Unchecked, 29.0s Time] [2022-11-03 02:03:11,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17704 states. [2022-11-03 02:03:16,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17704 to 17684. [2022-11-03 02:03:16,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17684 states, 8664 states have (on average 1.1922899353647276) internal successors, (10330), 8809 states have internal predecessors, (10330), 8604 states have call successors, (8604), 412 states have call predecessors, (8604), 415 states have return successors, (8638), 8527 states have call predecessors, (8638), 8604 states have call successors, (8638) [2022-11-03 02:03:16,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17684 states to 17684 states and 27572 transitions. [2022-11-03 02:03:16,989 INFO L78 Accepts]: Start accepts. Automaton has 17684 states and 27572 transitions. Word has length 174 [2022-11-03 02:03:16,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:03:16,990 INFO L495 AbstractCegarLoop]: Abstraction has 17684 states and 27572 transitions. [2022-11-03 02:03:16,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-03 02:03:16,991 INFO L276 IsEmpty]: Start isEmpty. Operand 17684 states and 27572 transitions. [2022-11-03 02:03:17,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2022-11-03 02:03:17,026 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:03:17,027 INFO L195 NwaCegarLoop]: trace histogram [13, 11, 11, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:03:17,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 02:03:17,027 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:03:17,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:03:17,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1822965268, now seen corresponding path program 1 times [2022-11-03 02:03:17,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:03:17,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280425960] [2022-11-03 02:03:17,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:03:17,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:03:17,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:03:18,209 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 528 trivial. 0 not checked. [2022-11-03 02:03:18,209 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:03:18,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280425960] [2022-11-03 02:03:18,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280425960] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:03:18,210 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:03:18,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:03:18,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117159323] [2022-11-03 02:03:18,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:03:18,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:03:18,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:03:18,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:03:18,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:03:18,212 INFO L87 Difference]: Start difference. First operand 17684 states and 27572 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-03 02:03:20,442 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 [] [2022-11-03 02:03:22,592 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:03:24,695 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:03:27,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:03:27,653 INFO L93 Difference]: Finished difference Result 37473 states and 58608 transitions. [2022-11-03 02:03:27,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:03:27,654 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 223 [2022-11-03 02:03:27,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:03:27,951 INFO L225 Difference]: With dead ends: 37473 [2022-11-03 02:03:27,951 INFO L226 Difference]: Without dead ends: 37471 [2022-11-03 02:03:28,006 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 [2022-11-03 02:03:28,008 INFO L413 NwaCegarLoop]: 5447 mSDtfsCounter, 3930 mSDsluCounter, 9319 mSDsCounter, 0 mSdLazyCounter, 779 mSolverCounterSat, 60 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3989 SdHoareTripleChecker+Valid, 14364 SdHoareTripleChecker+Invalid, 842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 779 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:03:28,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3989 Valid, 14364 Invalid, 842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 779 Invalid, 3 Unknown, 0 Unchecked, 7.7s Time] [2022-11-03 02:03:28,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37471 states. [2022-11-03 02:03:36,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37471 to 34827. [2022-11-03 02:03:36,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34827 states, 16996 states have (on average 1.191162626500353) internal successors, (20245), 17277 states have internal predecessors, (20245), 17037 states have call successors, (17037), 790 states have call predecessors, (17037), 793 states have return successors, (17103), 16885 states have call predecessors, (17103), 17037 states have call successors, (17103) [2022-11-03 02:03:37,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34827 states to 34827 states and 54385 transitions. [2022-11-03 02:03:37,024 INFO L78 Accepts]: Start accepts. Automaton has 34827 states and 54385 transitions. Word has length 223 [2022-11-03 02:03:37,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:03:37,025 INFO L495 AbstractCegarLoop]: Abstraction has 34827 states and 54385 transitions. [2022-11-03 02:03:37,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-03 02:03:37,025 INFO L276 IsEmpty]: Start isEmpty. Operand 34827 states and 54385 transitions. [2022-11-03 02:03:37,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2022-11-03 02:03:37,070 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:03:37,070 INFO L195 NwaCegarLoop]: trace histogram [14, 10, 10, 8, 8, 8, 8, 8, 8, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:03:37,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 02:03:37,071 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:03:37,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:03:37,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1538898762, now seen corresponding path program 1 times [2022-11-03 02:03:37,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:03:37,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35315115] [2022-11-03 02:03:37,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:03:37,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:03:37,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:03:37,627 INFO L134 CoverageAnalysis]: Checked inductivity of 537 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 520 trivial. 0 not checked. [2022-11-03 02:03:37,628 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:03:37,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35315115] [2022-11-03 02:03:37,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35315115] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:03:37,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:03:37,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:03:37,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087501845] [2022-11-03 02:03:37,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:03:37,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:03:37,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:03:37,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:03:37,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:03:37,631 INFO L87 Difference]: Start difference. First operand 34827 states and 54385 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-11-03 02:03:39,858 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:03:41,982 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:03:44,418 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 [] [2022-11-03 02:03:47,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:03:47,243 INFO L93 Difference]: Finished difference Result 80747 states and 126009 transitions. [2022-11-03 02:03:47,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:03:47,243 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 227 [2022-11-03 02:03:47,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:03:47,622 INFO L225 Difference]: With dead ends: 80747 [2022-11-03 02:03:47,622 INFO L226 Difference]: Without dead ends: 46267 [2022-11-03 02:03:47,922 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 [2022-11-03 02:03:47,923 INFO L413 NwaCegarLoop]: 7020 mSDtfsCounter, 3570 mSDsluCounter, 3713 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 4 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3572 SdHoareTripleChecker+Valid, 10588 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:03:47,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3572 Valid, 10588 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 474 Invalid, 3 Unknown, 0 Unchecked, 7.1s Time] [2022-11-03 02:03:47,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46267 states. [2022-11-03 02:03:59,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46267 to 46245. [2022-11-03 02:03:59,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46245 states, 22758 states have (on average 1.1961068635205203) internal successors, (27221), 23161 states have internal predecessors, (27221), 22377 states have call successors, (22377), 1106 states have call predecessors, (22377), 1109 states have return successors, (22469), 22155 states have call predecessors, (22469), 22377 states have call successors, (22469) [2022-11-03 02:04:00,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46245 states to 46245 states and 72067 transitions. [2022-11-03 02:04:00,675 INFO L78 Accepts]: Start accepts. Automaton has 46245 states and 72067 transitions. Word has length 227 [2022-11-03 02:04:00,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:04:00,681 INFO L495 AbstractCegarLoop]: Abstraction has 46245 states and 72067 transitions. [2022-11-03 02:04:00,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-11-03 02:04:00,681 INFO L276 IsEmpty]: Start isEmpty. Operand 46245 states and 72067 transitions. [2022-11-03 02:04:00,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2022-11-03 02:04:00,756 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:04:00,757 INFO L195 NwaCegarLoop]: trace histogram [16, 10, 10, 8, 8, 8, 8, 8, 8, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:04:00,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 02:04:00,757 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:04:00,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:04:00,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1879227478, now seen corresponding path program 1 times [2022-11-03 02:04:00,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:04:00,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019756149] [2022-11-03 02:04:00,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:04:00,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:04:01,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:04:02,066 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 585 trivial. 0 not checked. [2022-11-03 02:04:02,066 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:04:02,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019756149] [2022-11-03 02:04:02,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019756149] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:04:02,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:04:02,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:04:02,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593316222] [2022-11-03 02:04:02,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:04:02,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:04:02,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:04:02,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:04:02,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:04:02,069 INFO L87 Difference]: Start difference. First operand 46245 states and 72067 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 3 states have call successors, (27), 1 states have call predecessors, (27), 2 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-03 02:04:04,405 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 [] [2022-11-03 02:04:06,668 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:04:09,022 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:04:12,356 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:04:15,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:04:15,055 INFO L93 Difference]: Finished difference Result 103451 states and 161115 transitions. [2022-11-03 02:04:15,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:04:15,056 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 3 states have call successors, (27), 1 states have call predecessors, (27), 2 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) Word has length 248 [2022-11-03 02:04:15,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:04:15,469 INFO L225 Difference]: With dead ends: 103451 [2022-11-03 02:04:15,469 INFO L226 Difference]: Without dead ends: 57553 [2022-11-03 02:04:15,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:04:15,929 INFO L413 NwaCegarLoop]: 7019 mSDtfsCounter, 3539 mSDsluCounter, 18300 mSDsCounter, 0 mSdLazyCounter, 1038 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3544 SdHoareTripleChecker+Valid, 24625 SdHoareTripleChecker+Invalid, 1043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1038 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:04:15,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3544 Valid, 24625 Invalid, 1043 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1038 Invalid, 4 Unknown, 0 Unchecked, 9.9s Time] [2022-11-03 02:04:15,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57553 states. [2022-11-03 02:04:28,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57553 to 57509. [2022-11-03 02:04:29,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57509 states, 28376 states have (on average 1.1964688469128841) internal successors, (33951), 28901 states have internal predecessors, (33951), 27707 states have call successors, (27707), 1412 states have call predecessors, (27707), 1425 states have return successors, (27841), 27425 states have call predecessors, (27841), 27707 states have call successors, (27841) [2022-11-03 02:04:29,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57509 states to 57509 states and 89499 transitions. [2022-11-03 02:04:29,624 INFO L78 Accepts]: Start accepts. Automaton has 57509 states and 89499 transitions. Word has length 248 [2022-11-03 02:04:29,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:04:29,624 INFO L495 AbstractCegarLoop]: Abstraction has 57509 states and 89499 transitions. [2022-11-03 02:04:29,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 3 states have call successors, (27), 1 states have call predecessors, (27), 2 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-03 02:04:29,625 INFO L276 IsEmpty]: Start isEmpty. Operand 57509 states and 89499 transitions. [2022-11-03 02:04:29,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2022-11-03 02:04:29,725 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:04:29,726 INFO L195 NwaCegarLoop]: trace histogram [16, 10, 10, 8, 8, 8, 8, 8, 8, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:04:29,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 02:04:29,726 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:04:29,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:04:29,727 INFO L85 PathProgramCache]: Analyzing trace with hash -250124374, now seen corresponding path program 1 times [2022-11-03 02:04:29,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:04:29,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71299900] [2022-11-03 02:04:29,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:04:29,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:04:30,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:04:30,797 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 613 trivial. 0 not checked. [2022-11-03 02:04:30,798 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:04:30,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71299900] [2022-11-03 02:04:30,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71299900] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:04:30,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:04:30,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:04:30,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500882224] [2022-11-03 02:04:30,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:04:30,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:04:30,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:04:30,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:04:30,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:04:30,801 INFO L87 Difference]: Start difference. First operand 57509 states and 89499 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-11-03 02:04:33,055 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 [] [2022-11-03 02:04:35,126 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:04:37,049 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:04:39,589 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 [] [2022-11-03 02:04:42,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:04:42,201 INFO L93 Difference]: Finished difference Result 92961 states and 144594 transitions. [2022-11-03 02:04:42,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:04:42,201 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 249 [2022-11-03 02:04:42,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:04:42,737 INFO L225 Difference]: With dead ends: 92961 [2022-11-03 02:04:42,737 INFO L226 Difference]: Without dead ends: 64283 [2022-11-03 02:04:42,901 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 [2022-11-03 02:04:42,902 INFO L413 NwaCegarLoop]: 6440 mSDtfsCounter, 3501 mSDsluCounter, 3720 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 16 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3502 SdHoareTripleChecker+Valid, 10010 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:04:42,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3502 Valid, 10010 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 388 Invalid, 3 Unknown, 0 Unchecked, 8.6s Time] [2022-11-03 02:04:42,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64283 states.