./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-net-usb-pegasus.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d95d635-df2e-4f06-a66b-77416ae1d1e8/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d95d635-df2e-4f06-a66b-77416ae1d1e8/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_7d95d635-df2e-4f06-a66b-77416ae1d1e8/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d95d635-df2e-4f06-a66b-77416ae1d1e8/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-usb-pegasus.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d95d635-df2e-4f06-a66b-77416ae1d1e8/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_7d95d635-df2e-4f06-a66b-77416ae1d1e8/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 c247f7785da4bad35b227af25ef3ffc26bc077e1b05f1520f2d707a8c759410c --- 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 03:27:45,943 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:27:45,957 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:27:45,997 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:27:45,998 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:27:46,002 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:27:46,004 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:27:46,006 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:27:46,010 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:27:46,016 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:27:46,017 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:27:46,020 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:27:46,021 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:27:46,023 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:27:46,025 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:27:46,027 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:27:46,028 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:27:46,029 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:27:46,031 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:27:46,039 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:27:46,041 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:27:46,042 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:27:46,046 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:27:46,047 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:27:46,055 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:27:46,056 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:27:46,056 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:27:46,058 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:27:46,059 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:27:46,061 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:27:46,062 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:27:46,063 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:27:46,065 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:27:46,067 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:27:46,068 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:27:46,068 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:27:46,069 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:27:46,069 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:27:46,070 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:27:46,071 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:27:46,072 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:27:46,073 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d95d635-df2e-4f06-a66b-77416ae1d1e8/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 03:27:46,116 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:27:46,116 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:27:46,117 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:27:46,117 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:27:46,118 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:27:46,118 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:27:46,119 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:27:46,119 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:27:46,119 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:27:46,119 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 03:27:46,120 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:27:46,121 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:27:46,121 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 03:27:46,121 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 03:27:46,121 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:27:46,121 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 03:27:46,122 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 03:27:46,122 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 03:27:46,123 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:27:46,123 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 03:27:46,123 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:27:46,123 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:27:46,123 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:27:46,124 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:27:46,124 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:27:46,124 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:27:46,124 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:27:46,124 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:27:46,125 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:27:46,125 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:27:46,125 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:27:46,126 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 03:27:46,126 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:27:46,126 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:27:46,126 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 03:27:46,126 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 03:27:46,127 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:27:46,127 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:27:46,128 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_7d95d635-df2e-4f06-a66b-77416ae1d1e8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d95d635-df2e-4f06-a66b-77416ae1d1e8/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c247f7785da4bad35b227af25ef3ffc26bc077e1b05f1520f2d707a8c759410c [2022-11-03 03:27:46,430 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:27:46,460 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:27:46,463 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:27:46,464 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:27:46,465 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:27:46,466 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d95d635-df2e-4f06-a66b-77416ae1d1e8/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-usb-pegasus.cil.i [2022-11-03 03:27:46,565 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d95d635-df2e-4f06-a66b-77416ae1d1e8/bin/utaipan-7li7fVZpFI/data/59029fe6c/542beba164f04b689d6f927a63f65e57/FLAG5a60d9319 [2022-11-03 03:27:47,591 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:27:47,593 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d95d635-df2e-4f06-a66b-77416ae1d1e8/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-usb-pegasus.cil.i [2022-11-03 03:27:47,642 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d95d635-df2e-4f06-a66b-77416ae1d1e8/bin/utaipan-7li7fVZpFI/data/59029fe6c/542beba164f04b689d6f927a63f65e57/FLAG5a60d9319 [2022-11-03 03:27:47,943 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d95d635-df2e-4f06-a66b-77416ae1d1e8/bin/utaipan-7li7fVZpFI/data/59029fe6c/542beba164f04b689d6f927a63f65e57 [2022-11-03 03:27:47,947 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:27:47,949 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:27:47,954 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:27:47,954 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:27:47,958 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:27:47,960 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:27:47" (1/1) ... [2022-11-03 03:27:47,961 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15b0fa3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:27:47, skipping insertion in model container [2022-11-03 03:27:47,962 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:27:47" (1/1) ... [2022-11-03 03:27:47,969 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:27:48,135 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:27:50,662 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_7d95d635-df2e-4f06-a66b-77416ae1d1e8/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-usb-pegasus.cil.i[298288,298301] [2022-11-03 03:27:50,665 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_7d95d635-df2e-4f06-a66b-77416ae1d1e8/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-usb-pegasus.cil.i[298435,298448] [2022-11-03 03:27:50,666 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_7d95d635-df2e-4f06-a66b-77416ae1d1e8/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-usb-pegasus.cil.i[298574,298587] [2022-11-03 03:27:50,666 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_7d95d635-df2e-4f06-a66b-77416ae1d1e8/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-usb-pegasus.cil.i[298732,298745] [2022-11-03 03:27:50,684 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:27:50,756 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:27:51,175 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_7d95d635-df2e-4f06-a66b-77416ae1d1e8/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-usb-pegasus.cil.i[298288,298301] [2022-11-03 03:27:51,175 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_7d95d635-df2e-4f06-a66b-77416ae1d1e8/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-usb-pegasus.cil.i[298435,298448] [2022-11-03 03:27:51,176 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_7d95d635-df2e-4f06-a66b-77416ae1d1e8/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-usb-pegasus.cil.i[298574,298587] [2022-11-03 03:27:51,176 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_7d95d635-df2e-4f06-a66b-77416ae1d1e8/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-usb-pegasus.cil.i[298732,298745] [2022-11-03 03:27:51,196 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:27:51,414 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:27:51,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:27:51 WrapperNode [2022-11-03 03:27:51,415 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:27:51,416 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:27:51,416 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:27:51,417 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:27:51,425 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:27:51" (1/1) ... [2022-11-03 03:27:51,542 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:27:51" (1/1) ... [2022-11-03 03:27:51,702 INFO L138 Inliner]: procedures = 311, calls = 3006, calls flagged for inlining = 171, calls inlined = 158, statements flattened = 5219 [2022-11-03 03:27:51,702 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:27:51,703 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:27:51,703 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:27:51,703 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:27:51,715 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:27:51" (1/1) ... [2022-11-03 03:27:51,722 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:27:51" (1/1) ... [2022-11-03 03:27:51,776 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:27:51" (1/1) ... [2022-11-03 03:27:51,776 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:27:51" (1/1) ... [2022-11-03 03:27:51,938 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:27:51" (1/1) ... [2022-11-03 03:27:52,027 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:27:51" (1/1) ... [2022-11-03 03:27:52,056 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:27:51" (1/1) ... [2022-11-03 03:27:52,068 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:27:51" (1/1) ... [2022-11-03 03:27:52,101 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:27:52,102 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:27:52,102 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:27:52,102 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:27:52,103 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:27:51" (1/1) ... [2022-11-03 03:27:52,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:27:52,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d95d635-df2e-4f06-a66b-77416ae1d1e8/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:27:52,136 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d95d635-df2e-4f06-a66b-77416ae1d1e8/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:27:52,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d95d635-df2e-4f06-a66b-77416ae1d1e8/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:27:52,184 INFO L130 BoogieDeclarations]: Found specification of procedure read_bulk_callback [2022-11-03 03:27:52,184 INFO L138 BoogieDeclarations]: Found implementation of procedure read_bulk_callback [2022-11-03 03:27:52,184 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2022-11-03 03:27:52,185 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2022-11-03 03:27:52,185 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2022-11-03 03:27:52,185 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2022-11-03 03:27:52,185 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 03:27:52,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 03:27:52,185 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 03:27:52,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 03:27:52,186 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 03:27:52,186 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 03:27:52,186 INFO L130 BoogieDeclarations]: Found specification of procedure write_mii_word [2022-11-03 03:27:52,186 INFO L138 BoogieDeclarations]: Found implementation of procedure write_mii_word [2022-11-03 03:27:52,186 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_present [2022-11-03 03:27:52,186 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_present [2022-11-03 03:27:52,186 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 03:27:52,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 03:27:52,187 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work [2022-11-03 03:27:52,187 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work [2022-11-03 03:27:52,187 INFO L130 BoogieDeclarations]: Found specification of procedure set_carrier [2022-11-03 03:27:52,187 INFO L138 BoogieDeclarations]: Found implementation of procedure set_carrier [2022-11-03 03:27:52,187 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2022-11-03 03:27:52,187 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2022-11-03 03:27:52,188 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2022-11-03 03:27:52,188 INFO L138 BoogieDeclarations]: Found implementation of procedure strsep [2022-11-03 03:27:52,188 INFO L130 BoogieDeclarations]: Found specification of procedure read_mii_word [2022-11-03 03:27:52,188 INFO L138 BoogieDeclarations]: Found implementation of procedure read_mii_word [2022-11-03 03:27:52,188 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-03 03:27:52,188 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-03 03:27:52,189 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_open [2022-11-03 03:27:52,189 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_open [2022-11-03 03:27:52,189 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-03 03:27:52,190 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-03 03:27:52,190 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2022-11-03 03:27:52,190 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2022-11-03 03:27:52,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 03:27:52,190 INFO L130 BoogieDeclarations]: Found specification of procedure read_eprom_word [2022-11-03 03:27:52,190 INFO L138 BoogieDeclarations]: Found implementation of procedure read_eprom_word [2022-11-03 03:27:52,190 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-03 03:27:52,191 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-03 03:27:52,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 03:27:52,192 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_nway_reset [2022-11-03 03:27:52,193 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_nway_reset [2022-11-03 03:27:52,193 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-03 03:27:52,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-03 03:27:52,193 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-03 03:27:52,194 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-03 03:27:52,194 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-03 03:27:52,194 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-03 03:27:52,194 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-03 03:27:52,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-03 03:27:52,194 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_resume [2022-11-03 03:27:52,195 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_resume [2022-11-03 03:27:52,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 03:27:52,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 03:27:52,195 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2022-11-03 03:27:52,195 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2022-11-03 03:27:52,195 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_tx_timeout [2022-11-03 03:27:52,196 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_tx_timeout [2022-11-03 03:27:52,196 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-03 03:27:52,196 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-03 03:27:52,196 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_dec_workqueue [2022-11-03 03:27:52,196 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_dec_workqueue [2022-11-03 03:27:52,196 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2022-11-03 03:27:52,197 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2022-11-03 03:27:52,197 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-03 03:27:52,197 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-03 03:27:52,197 INFO L130 BoogieDeclarations]: Found specification of procedure free_all_urbs [2022-11-03 03:27:52,197 INFO L138 BoogieDeclarations]: Found implementation of procedure free_all_urbs [2022-11-03 03:27:52,198 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-03 03:27:52,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-03 03:27:52,198 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_disconnect [2022-11-03 03:27:52,198 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_disconnect [2022-11-03 03:27:52,198 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2022-11-03 03:27:52,198 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2022-11-03 03:27:52,199 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 03:27:52,199 INFO L130 BoogieDeclarations]: Found specification of procedure simple_strtoul [2022-11-03 03:27:52,199 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_strtoul [2022-11-03 03:27:52,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 03:27:52,199 INFO L130 BoogieDeclarations]: Found specification of procedure __mii_op [2022-11-03 03:27:52,199 INFO L138 BoogieDeclarations]: Found implementation of procedure __mii_op [2022-11-03 03:27:52,200 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-03 03:27:52,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-03 03:27:52,200 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 03:27:52,200 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-03 03:27:52,200 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-03 03:27:52,201 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-03 03:27:52,201 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-03 03:27:52,201 INFO L130 BoogieDeclarations]: Found specification of procedure intr_callback [2022-11-03 03:27:52,201 INFO L138 BoogieDeclarations]: Found implementation of procedure intr_callback [2022-11-03 03:27:52,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-03 03:27:52,201 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-03 03:27:52,202 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_set_wol [2022-11-03 03:27:52,202 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_set_wol [2022-11-03 03:27:52,202 INFO L130 BoogieDeclarations]: Found specification of procedure __netdev_alloc_skb_ip_align [2022-11-03 03:27:52,202 INFO L138 BoogieDeclarations]: Found implementation of procedure __netdev_alloc_skb_ip_align [2022-11-03 03:27:52,202 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-11-03 03:27:52,202 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-11-03 03:27:52,203 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-03 03:27:52,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-03 03:27:52,203 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-03 03:27:52,203 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-03 03:27:52,203 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-11-03 03:27:52,203 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-11-03 03:27:52,204 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_pegasus_exit_11_2 [2022-11-03 03:27:52,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_pegasus_exit_11_2 [2022-11-03 03:27:52,204 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 03:27:52,204 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 03:27:52,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 03:27:52,204 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 03:27:52,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 03:27:52,205 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_set_multicast [2022-11-03 03:27:52,205 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_set_multicast [2022-11-03 03:27:52,205 INFO L130 BoogieDeclarations]: Found specification of procedure set_register [2022-11-03 03:27:52,205 INFO L138 BoogieDeclarations]: Found implementation of procedure set_register [2022-11-03 03:27:52,206 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 03:27:52,206 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-03 03:27:52,206 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-03 03:27:52,206 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-03 03:27:52,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-03 03:27:52,206 INFO L130 BoogieDeclarations]: Found specification of procedure unlink_all_urbs [2022-11-03 03:27:52,207 INFO L138 BoogieDeclarations]: Found implementation of procedure unlink_all_urbs [2022-11-03 03:27:52,207 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 03:27:52,207 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-03 03:27:52,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-03 03:27:52,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 03:27:52,207 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-03 03:27:52,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-03 03:27:52,208 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2022-11-03 03:27:52,208 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2022-11-03 03:27:52,208 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2022-11-03 03:27:52,208 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2022-11-03 03:27:52,208 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2022-11-03 03:27:52,209 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2022-11-03 03:27:52,209 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-03 03:27:52,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-03 03:27:52,209 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_close [2022-11-03 03:27:52,209 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_close [2022-11-03 03:27:52,209 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-03 03:27:52,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-03 03:27:52,210 INFO L130 BoogieDeclarations]: Found specification of procedure get_registers [2022-11-03 03:27:52,210 INFO L138 BoogieDeclarations]: Found implementation of procedure get_registers [2022-11-03 03:27:52,210 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work [2022-11-03 03:27:52,210 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work [2022-11-03 03:27:52,210 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2022-11-03 03:27:52,210 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_instance_release_3_4 [2022-11-03 03:27:52,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_instance_release_3_4 [2022-11-03 03:27:52,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 03:27:52,211 INFO L130 BoogieDeclarations]: Found specification of procedure set_registers [2022-11-03 03:27:52,211 INFO L138 BoogieDeclarations]: Found implementation of procedure set_registers [2022-11-03 03:27:52,211 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-03 03:27:52,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-03 03:27:52,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:27:52,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:27:53,065 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:27:53,069 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:27:53,927 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 03:28:01,109 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-03 03:28:01,616 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:28:02,911 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:28:02,911 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 03:28:02,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:28:02 BoogieIcfgContainer [2022-11-03 03:28:02,917 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:28:02,920 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:28:02,920 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:28:02,924 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:28:02,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:27:47" (1/3) ... [2022-11-03 03:28:02,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d5baa39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:28:02, skipping insertion in model container [2022-11-03 03:28:02,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:27:51" (2/3) ... [2022-11-03 03:28:02,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d5baa39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:28:02, skipping insertion in model container [2022-11-03 03:28:02,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:28:02" (3/3) ... [2022-11-03 03:28:02,929 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-usb-dev_drivers-net-usb-pegasus.cil.i [2022-11-03 03:28:02,953 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:28:02,953 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-03 03:28:03,071 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:28:03,081 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;@579ee6e4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:28:03,081 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-03 03:28:03,091 INFO L276 IsEmpty]: Start isEmpty. Operand has 1013 states, 638 states have (on average 1.329153605015674) internal successors, (848), 647 states have internal predecessors, (848), 305 states have call successors, (305), 69 states have call predecessors, (305), 68 states have return successors, (299), 297 states have call predecessors, (299), 299 states have call successors, (299) [2022-11-03 03:28:03,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-11-03 03:28:03,125 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:28:03,126 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:28:03,127 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 03:28:03,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:28:03,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1674150278, now seen corresponding path program 1 times [2022-11-03 03:28:03,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:28:03,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988534836] [2022-11-03 03:28:03,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:28:03,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:28:03,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:28:04,445 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2022-11-03 03:28:04,446 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:28:04,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988534836] [2022-11-03 03:28:04,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988534836] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:28:04,452 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:28:04,452 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:28:04,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7198222] [2022-11-03 03:28:04,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:28:04,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:28:04,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:28:04,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:28:04,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:28:04,510 INFO L87 Difference]: Start difference. First operand has 1013 states, 638 states have (on average 1.329153605015674) internal successors, (848), 647 states have internal predecessors, (848), 305 states have call successors, (305), 69 states have call predecessors, (305), 68 states have return successors, (299), 297 states have call predecessors, (299), 299 states have call successors, (299) Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-03 03:28:09,366 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 03:28:09,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:28:09,752 INFO L93 Difference]: Finished difference Result 2777 states and 3974 transitions. [2022-11-03 03:28:09,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:28:09,755 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 140 [2022-11-03 03:28:09,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:28:09,786 INFO L225 Difference]: With dead ends: 2777 [2022-11-03 03:28:09,787 INFO L226 Difference]: Without dead ends: 1779 [2022-11-03 03:28:09,798 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 03:28:09,802 INFO L413 NwaCegarLoop]: 1444 mSDtfsCounter, 1159 mSDsluCounter, 1362 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1159 SdHoareTripleChecker+Valid, 2598 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:28:09,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1159 Valid, 2598 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 458 Invalid, 1 Unknown, 0 Unchecked, 5.0s Time] [2022-11-03 03:28:09,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1779 states. [2022-11-03 03:28:09,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1779 to 1777. [2022-11-03 03:28:09,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1777 states, 1131 states have (on average 1.3253757736516356) internal successors, (1499), 1144 states have internal predecessors, (1499), 514 states have call successors, (514), 131 states have call predecessors, (514), 130 states have return successors, (511), 508 states have call predecessors, (511), 511 states have call successors, (511) [2022-11-03 03:28:10,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1777 states to 1777 states and 2524 transitions. [2022-11-03 03:28:10,009 INFO L78 Accepts]: Start accepts. Automaton has 1777 states and 2524 transitions. Word has length 140 [2022-11-03 03:28:10,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:28:10,012 INFO L495 AbstractCegarLoop]: Abstraction has 1777 states and 2524 transitions. [2022-11-03 03:28:10,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-03 03:28:10,012 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states and 2524 transitions. [2022-11-03 03:28:10,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-11-03 03:28:10,034 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:28:10,035 INFO L195 NwaCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 4, 4, 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] [2022-11-03 03:28:10,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 03:28:10,035 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:28:10,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:28:10,036 INFO L85 PathProgramCache]: Analyzing trace with hash -373618320, now seen corresponding path program 1 times [2022-11-03 03:28:10,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:28:10,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924976254] [2022-11-03 03:28:10,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:28:10,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:28:10,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:28:11,572 INFO L134 CoverageAnalysis]: Checked inductivity of 663 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 663 trivial. 0 not checked. [2022-11-03 03:28:11,572 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:28:11,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924976254] [2022-11-03 03:28:11,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924976254] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:28:11,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:28:11,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:28:11,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149136156] [2022-11-03 03:28:11,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:28:11,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:28:11,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:28:11,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:28:11,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:28:11,587 INFO L87 Difference]: Start difference. First operand 1777 states and 2524 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-03 03:28:16,242 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 03:28:18,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:28:18,036 INFO L93 Difference]: Finished difference Result 2648 states and 3746 transitions. [2022-11-03 03:28:18,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:28:18,037 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 184 [2022-11-03 03:28:18,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:28:18,057 INFO L225 Difference]: With dead ends: 2648 [2022-11-03 03:28:18,057 INFO L226 Difference]: Without dead ends: 2632 [2022-11-03 03:28:18,060 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 03:28:18,061 INFO L413 NwaCegarLoop]: 1443 mSDtfsCounter, 1180 mSDsluCounter, 3051 mSDsCounter, 0 mSdLazyCounter, 668 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1180 SdHoareTripleChecker+Valid, 4054 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 668 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:28:18,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1180 Valid, 4054 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 668 Invalid, 1 Unknown, 0 Unchecked, 6.2s Time] [2022-11-03 03:28:18,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2632 states. [2022-11-03 03:28:18,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2632 to 2630. [2022-11-03 03:28:18,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2630 states, 1676 states have (on average 1.3251789976133652) internal successors, (2221), 1692 states have internal predecessors, (2221), 752 states have call successors, (752), 201 states have call predecessors, (752), 200 states have return successors, (749), 745 states have call predecessors, (749), 749 states have call successors, (749) [2022-11-03 03:28:18,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2630 states to 2630 states and 3722 transitions. [2022-11-03 03:28:18,258 INFO L78 Accepts]: Start accepts. Automaton has 2630 states and 3722 transitions. Word has length 184 [2022-11-03 03:28:18,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:28:18,261 INFO L495 AbstractCegarLoop]: Abstraction has 2630 states and 3722 transitions. [2022-11-03 03:28:18,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-03 03:28:18,262 INFO L276 IsEmpty]: Start isEmpty. Operand 2630 states and 3722 transitions. [2022-11-03 03:28:18,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2022-11-03 03:28:18,270 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:28:18,270 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:28:18,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 03:28:18,271 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:28:18,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:28:18,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1910621480, now seen corresponding path program 1 times [2022-11-03 03:28:18,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:28:18,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655272343] [2022-11-03 03:28:18,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:28:18,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:28:18,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:28:18,939 INFO L134 CoverageAnalysis]: Checked inductivity of 642 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 642 trivial. 0 not checked. [2022-11-03 03:28:18,939 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:28:18,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655272343] [2022-11-03 03:28:18,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655272343] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:28:18,940 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:28:18,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:28:18,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137810254] [2022-11-03 03:28:18,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:28:18,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:28:18,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:28:18,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:28:18,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:28:18,943 INFO L87 Difference]: Start difference. First operand 2630 states and 3722 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-11-03 03:28:23,277 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 03:28:23,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:28:23,592 INFO L93 Difference]: Finished difference Result 6500 states and 9181 transitions. [2022-11-03 03:28:23,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:28:23,593 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 201 [2022-11-03 03:28:23,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:28:23,618 INFO L225 Difference]: With dead ends: 6500 [2022-11-03 03:28:23,618 INFO L226 Difference]: Without dead ends: 3895 [2022-11-03 03:28:23,630 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 03:28:23,631 INFO L413 NwaCegarLoop]: 1334 mSDtfsCounter, 599 mSDsluCounter, 1390 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 599 SdHoareTripleChecker+Valid, 2513 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:28:23,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [599 Valid, 2513 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 479 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2022-11-03 03:28:23,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3895 states. [2022-11-03 03:28:23,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3895 to 3882. [2022-11-03 03:28:23,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3882 states, 2512 states have (on average 1.3335987261146496) internal successors, (3350), 2546 states have internal predecessors, (3350), 1052 states have call successors, (1052), 317 states have call predecessors, (1052), 316 states have return successors, (1049), 1033 states have call predecessors, (1049), 1049 states have call successors, (1049) [2022-11-03 03:28:23,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3882 states to 3882 states and 5451 transitions. [2022-11-03 03:28:23,845 INFO L78 Accepts]: Start accepts. Automaton has 3882 states and 5451 transitions. Word has length 201 [2022-11-03 03:28:23,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:28:23,847 INFO L495 AbstractCegarLoop]: Abstraction has 3882 states and 5451 transitions. [2022-11-03 03:28:23,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-11-03 03:28:23,847 INFO L276 IsEmpty]: Start isEmpty. Operand 3882 states and 5451 transitions. [2022-11-03 03:28:23,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2022-11-03 03:28:23,857 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:28:23,857 INFO L195 NwaCegarLoop]: trace histogram [14, 12, 12, 12, 12, 12, 12, 8, 8, 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] [2022-11-03 03:28:23,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 03:28:23,858 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:28:23,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:28:23,859 INFO L85 PathProgramCache]: Analyzing trace with hash 525359793, now seen corresponding path program 1 times [2022-11-03 03:28:23,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:28:23,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177225342] [2022-11-03 03:28:23,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:28:23,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:28:24,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:28:24,396 INFO L134 CoverageAnalysis]: Checked inductivity of 696 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 689 trivial. 0 not checked. [2022-11-03 03:28:24,397 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:28:24,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177225342] [2022-11-03 03:28:24,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177225342] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:28:24,397 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:28:24,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:28:24,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050663300] [2022-11-03 03:28:24,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:28:24,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:28:24,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:28:24,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:28:24,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:28:24,400 INFO L87 Difference]: Start difference. First operand 3882 states and 5451 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-11-03 03:28:29,071 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 03:28:29,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:28:29,322 INFO L93 Difference]: Finished difference Result 7879 states and 11023 transitions. [2022-11-03 03:28:29,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:28:29,323 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 219 [2022-11-03 03:28:29,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:28:29,347 INFO L225 Difference]: With dead ends: 7879 [2022-11-03 03:28:29,347 INFO L226 Difference]: Without dead ends: 4022 [2022-11-03 03:28:29,362 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 03:28:29,363 INFO L413 NwaCegarLoop]: 1346 mSDtfsCounter, 600 mSDsluCounter, 1413 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 600 SdHoareTripleChecker+Valid, 2545 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:28:29,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [600 Valid, 2545 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 452 Invalid, 1 Unknown, 0 Unchecked, 4.7s Time] [2022-11-03 03:28:29,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4022 states. [2022-11-03 03:28:29,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4022 to 4014. [2022-11-03 03:28:29,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4014 states, 2614 states have (on average 1.3339709257842387) internal successors, (3487), 2654 states have internal predecessors, (3487), 1056 states have call successors, (1056), 344 states have call predecessors, (1056), 342 states have return successors, (1053), 1032 states have call predecessors, (1053), 1053 states have call successors, (1053) [2022-11-03 03:28:29,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4014 states to 4014 states and 5596 transitions. [2022-11-03 03:28:29,587 INFO L78 Accepts]: Start accepts. Automaton has 4014 states and 5596 transitions. Word has length 219 [2022-11-03 03:28:29,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:28:29,588 INFO L495 AbstractCegarLoop]: Abstraction has 4014 states and 5596 transitions. [2022-11-03 03:28:29,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-11-03 03:28:29,589 INFO L276 IsEmpty]: Start isEmpty. Operand 4014 states and 5596 transitions. [2022-11-03 03:28:29,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2022-11-03 03:28:29,600 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:28:29,603 INFO L195 NwaCegarLoop]: trace histogram [17, 12, 12, 12, 12, 12, 12, 12, 12, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:28:29,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 03:28:29,604 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:28:29,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:28:29,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1853447411, now seen corresponding path program 1 times [2022-11-03 03:28:29,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:28:29,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647414573] [2022-11-03 03:28:29,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:28:29,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:28:29,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:28:30,814 INFO L134 CoverageAnalysis]: Checked inductivity of 906 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 906 trivial. 0 not checked. [2022-11-03 03:28:30,815 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:28:30,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647414573] [2022-11-03 03:28:30,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647414573] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:28:30,816 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:28:30,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:28:30,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140079921] [2022-11-03 03:28:30,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:28:30,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:28:30,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:28:30,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:28:30,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:28:30,818 INFO L87 Difference]: Start difference. First operand 4014 states and 5596 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-03 03:28:35,876 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 03:28:37,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:28:37,718 INFO L93 Difference]: Finished difference Result 5482 states and 7925 transitions. [2022-11-03 03:28:37,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:28:37,719 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 268 [2022-11-03 03:28:37,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:28:37,751 INFO L225 Difference]: With dead ends: 5482 [2022-11-03 03:28:37,751 INFO L226 Difference]: Without dead ends: 5480 [2022-11-03 03:28:37,756 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 03:28:37,757 INFO L413 NwaCegarLoop]: 1872 mSDtfsCounter, 1822 mSDsluCounter, 3568 mSDsCounter, 0 mSdLazyCounter, 915 mSolverCounterSat, 103 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1929 SdHoareTripleChecker+Valid, 4939 SdHoareTripleChecker+Invalid, 1019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 915 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-11-03 03:28:37,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1929 Valid, 4939 Invalid, 1019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 915 Invalid, 1 Unknown, 0 Unchecked, 6.6s Time] [2022-11-03 03:28:37,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5480 states. [2022-11-03 03:28:38,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5480 to 4014. [2022-11-03 03:28:38,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4014 states, 2614 states have (on average 1.3335883703136955) internal successors, (3486), 2654 states have internal predecessors, (3486), 1056 states have call successors, (1056), 344 states have call predecessors, (1056), 342 states have return successors, (1053), 1032 states have call predecessors, (1053), 1053 states have call successors, (1053) [2022-11-03 03:28:38,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4014 states to 4014 states and 5595 transitions. [2022-11-03 03:28:38,158 INFO L78 Accepts]: Start accepts. Automaton has 4014 states and 5595 transitions. Word has length 268 [2022-11-03 03:28:38,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:28:38,168 INFO L495 AbstractCegarLoop]: Abstraction has 4014 states and 5595 transitions. [2022-11-03 03:28:38,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-03 03:28:38,177 INFO L276 IsEmpty]: Start isEmpty. Operand 4014 states and 5595 transitions. [2022-11-03 03:28:38,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2022-11-03 03:28:38,197 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:28:38,198 INFO L195 NwaCegarLoop]: trace histogram [20, 14, 14, 14, 14, 14, 14, 12, 12, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:28:38,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 03:28:38,198 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:28:38,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:28:38,199 INFO L85 PathProgramCache]: Analyzing trace with hash 99450017, now seen corresponding path program 1 times [2022-11-03 03:28:38,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:28:38,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51596600] [2022-11-03 03:28:38,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:28:38,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:28:38,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:28:39,083 INFO L134 CoverageAnalysis]: Checked inductivity of 1242 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1242 trivial. 0 not checked. [2022-11-03 03:28:39,083 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:28:39,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51596600] [2022-11-03 03:28:39,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51596600] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:28:39,084 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:28:39,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:28:39,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342274444] [2022-11-03 03:28:39,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:28:39,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:28:39,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:28:39,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:28:39,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:28:39,086 INFO L87 Difference]: Start difference. First operand 4014 states and 5595 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 3 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) [2022-11-03 03:28:42,720 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 03:28:44,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:28:44,538 INFO L93 Difference]: Finished difference Result 11092 states and 15445 transitions. [2022-11-03 03:28:44,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:28:44,539 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 3 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) Word has length 407 [2022-11-03 03:28:44,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:28:44,588 INFO L225 Difference]: With dead ends: 11092 [2022-11-03 03:28:44,588 INFO L226 Difference]: Without dead ends: 7454 [2022-11-03 03:28:44,602 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 03:28:44,604 INFO L413 NwaCegarLoop]: 1450 mSDtfsCounter, 1095 mSDsluCounter, 1388 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1095 SdHoareTripleChecker+Valid, 2620 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:28:44,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1095 Valid, 2620 Invalid, 451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 449 Invalid, 1 Unknown, 0 Unchecked, 5.0s Time] [2022-11-03 03:28:44,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7454 states. [2022-11-03 03:28:44,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7454 to 7437. [2022-11-03 03:28:45,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7437 states, 4839 states have (on average 1.3343666046703864) internal successors, (6457), 4914 states have internal predecessors, (6457), 1946 states have call successors, (1946), 653 states have call predecessors, (1946), 650 states have return successors, (1949), 1898 states have call predecessors, (1949), 1943 states have call successors, (1949) [2022-11-03 03:28:45,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7437 states to 7437 states and 10352 transitions. [2022-11-03 03:28:45,042 INFO L78 Accepts]: Start accepts. Automaton has 7437 states and 10352 transitions. Word has length 407 [2022-11-03 03:28:45,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:28:45,043 INFO L495 AbstractCegarLoop]: Abstraction has 7437 states and 10352 transitions. [2022-11-03 03:28:45,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 3 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) [2022-11-03 03:28:45,044 INFO L276 IsEmpty]: Start isEmpty. Operand 7437 states and 10352 transitions. [2022-11-03 03:28:45,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2022-11-03 03:28:45,069 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:28:45,070 INFO L195 NwaCegarLoop]: trace histogram [20, 14, 14, 14, 14, 14, 14, 12, 12, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:28:45,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 03:28:45,070 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:28:45,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:28:45,071 INFO L85 PathProgramCache]: Analyzing trace with hash -2010502779, now seen corresponding path program 1 times [2022-11-03 03:28:45,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:28:45,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863078593] [2022-11-03 03:28:45,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:28:45,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:28:45,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:28:45,999 INFO L134 CoverageAnalysis]: Checked inductivity of 1242 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1242 trivial. 0 not checked. [2022-11-03 03:28:45,999 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:28:46,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863078593] [2022-11-03 03:28:46,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863078593] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:28:46,000 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:28:46,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:28:46,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854764474] [2022-11-03 03:28:46,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:28:46,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:28:46,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:28:46,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:28:46,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:28:46,003 INFO L87 Difference]: Start difference. First operand 7437 states and 10352 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 2 states have call successors, (49), 1 states have call predecessors, (49), 2 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2022-11-03 03:28:50,730 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 03:28:51,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:28:51,130 INFO L93 Difference]: Finished difference Result 11070 states and 15438 transitions. [2022-11-03 03:28:51,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:28:51,131 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 2 states have call successors, (49), 1 states have call predecessors, (49), 2 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) Word has length 408 [2022-11-03 03:28:51,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:28:51,170 INFO L225 Difference]: With dead ends: 11070 [2022-11-03 03:28:51,170 INFO L226 Difference]: Without dead ends: 7448 [2022-11-03 03:28:51,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 03:28:51,189 INFO L413 NwaCegarLoop]: 1206 mSDtfsCounter, 9 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2405 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-03 03:28:51,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2405 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 451 Invalid, 1 Unknown, 0 Unchecked, 4.8s Time] [2022-11-03 03:28:51,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7448 states. [2022-11-03 03:28:51,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7448 to 7442. [2022-11-03 03:28:51,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7442 states, 4843 states have (on average 1.33429692339459) internal successors, (6462), 4918 states have internal predecessors, (6462), 1947 states have call successors, (1947), 653 states have call predecessors, (1947), 650 states have return successors, (1950), 1899 states have call predecessors, (1950), 1944 states have call successors, (1950) [2022-11-03 03:28:51,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7442 states to 7442 states and 10359 transitions. [2022-11-03 03:28:51,616 INFO L78 Accepts]: Start accepts. Automaton has 7442 states and 10359 transitions. Word has length 408 [2022-11-03 03:28:51,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:28:51,617 INFO L495 AbstractCegarLoop]: Abstraction has 7442 states and 10359 transitions. [2022-11-03 03:28:51,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 2 states have call successors, (49), 1 states have call predecessors, (49), 2 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2022-11-03 03:28:51,618 INFO L276 IsEmpty]: Start isEmpty. Operand 7442 states and 10359 transitions. [2022-11-03 03:28:51,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2022-11-03 03:28:51,644 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:28:51,645 INFO L195 NwaCegarLoop]: trace histogram [20, 14, 14, 14, 14, 14, 14, 12, 12, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:28:51,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 03:28:51,645 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:28:51,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:28:51,646 INFO L85 PathProgramCache]: Analyzing trace with hash -598643858, now seen corresponding path program 1 times [2022-11-03 03:28:51,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:28:51,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263435980] [2022-11-03 03:28:51,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:28:51,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:28:52,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:28:52,672 INFO L134 CoverageAnalysis]: Checked inductivity of 1258 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1258 trivial. 0 not checked. [2022-11-03 03:28:52,673 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:28:52,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263435980] [2022-11-03 03:28:52,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263435980] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:28:52,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:28:52,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:28:52,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720913423] [2022-11-03 03:28:52,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:28:52,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:28:52,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:28:52,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:28:52,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:28:52,676 INFO L87 Difference]: Start difference. First operand 7442 states and 10359 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 2 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2022-11-03 03:28:57,003 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 03:28:57,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:28:57,557 INFO L93 Difference]: Finished difference Result 12622 states and 17911 transitions. [2022-11-03 03:28:57,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:28:57,558 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 2 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) Word has length 423 [2022-11-03 03:28:57,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:28:57,601 INFO L225 Difference]: With dead ends: 12622 [2022-11-03 03:28:57,601 INFO L226 Difference]: Without dead ends: 8995 [2022-11-03 03:28:57,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 03:28:57,620 INFO L413 NwaCegarLoop]: 1733 mSDtfsCounter, 389 mSDsluCounter, 1548 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 3062 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:28:57,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [534 Valid, 3062 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 538 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2022-11-03 03:28:57,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8995 states. [2022-11-03 03:28:58,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8995 to 7458. [2022-11-03 03:28:58,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7458 states, 4854 states have (on average 1.3341573959620932) internal successors, (6476), 4929 states have internal predecessors, (6476), 1952 states have call successors, (1952), 653 states have call predecessors, (1952), 650 states have return successors, (1955), 1904 states have call predecessors, (1955), 1949 states have call successors, (1955) [2022-11-03 03:28:58,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7458 states to 7458 states and 10383 transitions. [2022-11-03 03:28:58,334 INFO L78 Accepts]: Start accepts. Automaton has 7458 states and 10383 transitions. Word has length 423 [2022-11-03 03:28:58,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:28:58,335 INFO L495 AbstractCegarLoop]: Abstraction has 7458 states and 10383 transitions. [2022-11-03 03:28:58,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 2 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2022-11-03 03:28:58,336 INFO L276 IsEmpty]: Start isEmpty. Operand 7458 states and 10383 transitions. [2022-11-03 03:28:58,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2022-11-03 03:28:58,364 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:28:58,364 INFO L195 NwaCegarLoop]: trace histogram [20, 14, 14, 14, 14, 14, 14, 12, 12, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:28:58,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 03:28:58,365 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:28:58,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:28:58,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1662425290, now seen corresponding path program 1 times [2022-11-03 03:28:58,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:28:58,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006938089] [2022-11-03 03:28:58,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:28:58,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:28:58,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:28:59,611 INFO L134 CoverageAnalysis]: Checked inductivity of 1287 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1286 trivial. 0 not checked. [2022-11-03 03:28:59,611 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:28:59,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006938089] [2022-11-03 03:28:59,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006938089] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:28:59,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44310907] [2022-11-03 03:28:59,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:28:59,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:28:59,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d95d635-df2e-4f06-a66b-77416ae1d1e8/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:28:59,616 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d95d635-df2e-4f06-a66b-77416ae1d1e8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:28:59,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d95d635-df2e-4f06-a66b-77416ae1d1e8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 03:29:01,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:29:01,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 7542 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 03:29:01,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:29:01,839 INFO L134 CoverageAnalysis]: Checked inductivity of 1287 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1287 trivial. 0 not checked. [2022-11-03 03:29:01,839 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:29:01,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [44310907] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:29:01,839 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:29:01,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-03 03:29:01,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664461304] [2022-11-03 03:29:01,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:29:01,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:29:01,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:29:01,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:29:01,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:29:01,843 INFO L87 Difference]: Start difference. First operand 7458 states and 10383 transitions. Second operand has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 3 states have call successors, (53), 2 states have call predecessors, (53), 2 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) [2022-11-03 03:29:08,071 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 03:29:10,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:29:10,348 INFO L93 Difference]: Finished difference Result 20233 states and 29976 transitions. [2022-11-03 03:29:10,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:29:10,349 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 3 states have call successors, (53), 2 states have call predecessors, (53), 2 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) Word has length 439 [2022-11-03 03:29:10,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:29:10,424 INFO L225 Difference]: With dead ends: 20233 [2022-11-03 03:29:10,425 INFO L226 Difference]: Without dead ends: 16590 [2022-11-03 03:29:10,444 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 446 GetRequests, 439 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-03 03:29:10,444 INFO L413 NwaCegarLoop]: 2187 mSDtfsCounter, 1200 mSDsluCounter, 6643 mSDsCounter, 0 mSdLazyCounter, 1452 mSolverCounterSat, 517 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1396 SdHoareTripleChecker+Valid, 7779 SdHoareTripleChecker+Invalid, 1970 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 517 IncrementalHoareTripleChecker+Valid, 1452 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:29:10,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1396 Valid, 7779 Invalid, 1970 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [517 Valid, 1452 Invalid, 1 Unknown, 0 Unchecked, 7.3s Time] [2022-11-03 03:29:10,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16590 states. [2022-11-03 03:29:11,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16590 to 7462. [2022-11-03 03:29:11,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7462 states, 4858 states have (on average 1.3338822560724577) internal successors, (6480), 4933 states have internal predecessors, (6480), 1952 states have call successors, (1952), 653 states have call predecessors, (1952), 650 states have return successors, (1955), 1904 states have call predecessors, (1955), 1949 states have call successors, (1955) [2022-11-03 03:29:11,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7462 states to 7462 states and 10387 transitions. [2022-11-03 03:29:11,325 INFO L78 Accepts]: Start accepts. Automaton has 7462 states and 10387 transitions. Word has length 439 [2022-11-03 03:29:11,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:29:11,326 INFO L495 AbstractCegarLoop]: Abstraction has 7462 states and 10387 transitions. [2022-11-03 03:29:11,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 3 states have call successors, (53), 2 states have call predecessors, (53), 2 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) [2022-11-03 03:29:11,327 INFO L276 IsEmpty]: Start isEmpty. Operand 7462 states and 10387 transitions. [2022-11-03 03:29:11,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2022-11-03 03:29:11,351 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:29:11,352 INFO L195 NwaCegarLoop]: trace histogram [22, 16, 16, 16, 16, 16, 16, 12, 12, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:29:11,407 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d95d635-df2e-4f06-a66b-77416ae1d1e8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 03:29:11,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d95d635-df2e-4f06-a66b-77416ae1d1e8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-03 03:29:11,579 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:29:11,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:29:11,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1064320962, now seen corresponding path program 1 times [2022-11-03 03:29:11,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:29:11,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714265514] [2022-11-03 03:29:11,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:29:11,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:29:11,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:29:12,712 INFO L134 CoverageAnalysis]: Checked inductivity of 1555 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1554 trivial. 0 not checked. [2022-11-03 03:29:12,713 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:29:12,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714265514] [2022-11-03 03:29:12,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714265514] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:29:12,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348841864] [2022-11-03 03:29:12,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:29:12,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:29:12,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d95d635-df2e-4f06-a66b-77416ae1d1e8/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:29:12,732 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d95d635-df2e-4f06-a66b-77416ae1d1e8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:29:12,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d95d635-df2e-4f06-a66b-77416ae1d1e8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 03:29:14,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:29:14,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 7683 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 03:29:14,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:29:14,678 INFO L134 CoverageAnalysis]: Checked inductivity of 1555 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 1491 trivial. 0 not checked. [2022-11-03 03:29:14,678 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:29:14,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1348841864] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:29:14,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:29:14,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4] total 8 [2022-11-03 03:29:14,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883716905] [2022-11-03 03:29:14,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:29:14,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:29:14,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:29:14,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:29:14,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:29:14,681 INFO L87 Difference]: Start difference. First operand 7462 states and 10387 transitions. Second operand has 6 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 2 states have call successors, (59), 2 states have call predecessors, (59), 3 states have return successors, (59), 3 states have call predecessors, (59), 2 states have call successors, (59) [2022-11-03 03:29:22,099 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 03:29:22,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:29:22,750 INFO L93 Difference]: Finished difference Result 11149 states and 15560 transitions. [2022-11-03 03:29:22,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:29:22,759 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 2 states have call successors, (59), 2 states have call predecessors, (59), 3 states have return successors, (59), 3 states have call predecessors, (59), 2 states have call successors, (59) Word has length 469 [2022-11-03 03:29:22,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:29:22,795 INFO L225 Difference]: With dead ends: 11149 [2022-11-03 03:29:22,795 INFO L226 Difference]: Without dead ends: 7504 [2022-11-03 03:29:22,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 466 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-03 03:29:22,813 INFO L413 NwaCegarLoop]: 1211 mSDtfsCounter, 9 mSDsluCounter, 5707 mSDsCounter, 0 mSdLazyCounter, 1139 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 6035 SdHoareTripleChecker+Invalid, 1140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1139 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:29:22,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 6035 Invalid, 1140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1139 Invalid, 1 Unknown, 0 Unchecked, 7.5s Time] [2022-11-03 03:29:22,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7504 states. [2022-11-03 03:29:23,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7504 to 7469. [2022-11-03 03:29:23,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7469 states, 4864 states have (on average 1.3338815789473684) internal successors, (6488), 4938 states have internal predecessors, (6488), 1952 states have call successors, (1952), 653 states have call predecessors, (1952), 651 states have return successors, (1964), 1906 states have call predecessors, (1964), 1949 states have call successors, (1964) [2022-11-03 03:29:23,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7469 states to 7469 states and 10404 transitions. [2022-11-03 03:29:23,360 INFO L78 Accepts]: Start accepts. Automaton has 7469 states and 10404 transitions. Word has length 469 [2022-11-03 03:29:23,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:29:23,361 INFO L495 AbstractCegarLoop]: Abstraction has 7469 states and 10404 transitions. [2022-11-03 03:29:23,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 2 states have call successors, (59), 2 states have call predecessors, (59), 3 states have return successors, (59), 3 states have call predecessors, (59), 2 states have call successors, (59) [2022-11-03 03:29:23,362 INFO L276 IsEmpty]: Start isEmpty. Operand 7469 states and 10404 transitions. [2022-11-03 03:29:23,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2022-11-03 03:29:23,383 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:29:23,384 INFO L195 NwaCegarLoop]: trace histogram [22, 16, 16, 16, 16, 16, 16, 12, 12, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:29:23,442 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d95d635-df2e-4f06-a66b-77416ae1d1e8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 03:29:23,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d95d635-df2e-4f06-a66b-77416ae1d1e8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:29:23,599 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:29:23,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:29:23,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1453851145, now seen corresponding path program 1 times [2022-11-03 03:29:23,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:29:23,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079124176] [2022-11-03 03:29:23,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:29:23,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:29:23,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:29:24,618 INFO L134 CoverageAnalysis]: Checked inductivity of 1555 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1554 trivial. 0 not checked. [2022-11-03 03:29:24,618 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:29:24,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079124176] [2022-11-03 03:29:24,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079124176] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:29:24,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965531705] [2022-11-03 03:29:24,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:29:24,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:29:24,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d95d635-df2e-4f06-a66b-77416ae1d1e8/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:29:24,623 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d95d635-df2e-4f06-a66b-77416ae1d1e8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:29:24,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d95d635-df2e-4f06-a66b-77416ae1d1e8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 03:29:26,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:29:26,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 7687 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 03:29:26,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:29:26,691 INFO L134 CoverageAnalysis]: Checked inductivity of 1555 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1554 trivial. 0 not checked. [2022-11-03 03:29:26,692 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:29:27,179 INFO L134 CoverageAnalysis]: Checked inductivity of 1555 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1554 trivial. 0 not checked. [2022-11-03 03:29:27,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965531705] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:29:27,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1743546976] [2022-11-03 03:29:27,209 INFO L159 IcfgInterpreter]: Started Sifa with 213 locations of interest [2022-11-03 03:29:27,209 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:29:27,214 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:29:27,219 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:29:27,220 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs