./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-ethernet-dec-tulip-tulip.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3680134b-b231-4fc6-9475-e18c92e1934e/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3680134b-b231-4fc6-9475-e18c92e1934e/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3680134b-b231-4fc6-9475-e18c92e1934e/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3680134b-b231-4fc6-9475-e18c92e1934e/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-dec-tulip-tulip.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3680134b-b231-4fc6-9475-e18c92e1934e/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3680134b-b231-4fc6-9475-e18c92e1934e/bin/utaipan-TEXQjIfE4P --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 b5d2eeaaae10ee4c57bd86d22cba165fc727430aa2a7f660f053fb73e5712838 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 00:01:37,098 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 00:01:37,101 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 00:01:37,131 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 00:01:37,132 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 00:01:37,133 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 00:01:37,135 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 00:01:37,137 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 00:01:37,139 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 00:01:37,141 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 00:01:37,142 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 00:01:37,143 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 00:01:37,144 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 00:01:37,145 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 00:01:37,147 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 00:01:37,148 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 00:01:37,149 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 00:01:37,150 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 00:01:37,152 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 00:01:37,155 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 00:01:37,156 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 00:01:37,161 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 00:01:37,162 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 00:01:37,163 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 00:01:37,167 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 00:01:37,167 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 00:01:37,167 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 00:01:37,168 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 00:01:37,169 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 00:01:37,170 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 00:01:37,170 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 00:01:37,171 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 00:01:37,172 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 00:01:37,173 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 00:01:37,174 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 00:01:37,175 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 00:01:37,176 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 00:01:37,179 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 00:01:37,179 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 00:01:37,181 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 00:01:37,182 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 00:01:37,182 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3680134b-b231-4fc6-9475-e18c92e1934e/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-21 00:01:37,225 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 00:01:37,226 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 00:01:37,226 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 00:01:37,226 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 00:01:37,227 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 00:01:37,233 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 00:01:37,234 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 00:01:37,234 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 00:01:37,234 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 00:01:37,234 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 00:01:37,235 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 00:01:37,236 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 00:01:37,236 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 00:01:37,236 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 00:01:37,236 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 00:01:37,236 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 00:01:37,237 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 00:01:37,237 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 00:01:37,238 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 00:01:37,238 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 00:01:37,238 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 00:01:37,238 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 00:01:37,238 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 00:01:37,239 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 00:01:37,239 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 00:01:37,239 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 00:01:37,241 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 00:01:37,241 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 00:01:37,241 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 00:01:37,242 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:01:37,242 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 00:01:37,242 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 00:01:37,242 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 00:01:37,243 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 00:01:37,243 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 00:01:37,243 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 00:01:37,243 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 00:01:37,243 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 00:01:37,244 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3680134b-b231-4fc6-9475-e18c92e1934e/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3680134b-b231-4fc6-9475-e18c92e1934e/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b5d2eeaaae10ee4c57bd86d22cba165fc727430aa2a7f660f053fb73e5712838 [2021-11-21 00:01:37,506 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 00:01:37,539 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 00:01:37,540 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 00:01:37,541 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 00:01:37,542 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 00:01:37,543 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3680134b-b231-4fc6-9475-e18c92e1934e/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-dec-tulip-tulip.cil.i [2021-11-21 00:01:37,619 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3680134b-b231-4fc6-9475-e18c92e1934e/bin/utaipan-TEXQjIfE4P/data/f4da1b0bf/d76319c07f2e4627b482c1a867836973/FLAG078bd153a [2021-11-21 00:01:38,530 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 00:01:38,530 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3680134b-b231-4fc6-9475-e18c92e1934e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-dec-tulip-tulip.cil.i [2021-11-21 00:01:38,596 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3680134b-b231-4fc6-9475-e18c92e1934e/bin/utaipan-TEXQjIfE4P/data/f4da1b0bf/d76319c07f2e4627b482c1a867836973/FLAG078bd153a [2021-11-21 00:01:38,913 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3680134b-b231-4fc6-9475-e18c92e1934e/bin/utaipan-TEXQjIfE4P/data/f4da1b0bf/d76319c07f2e4627b482c1a867836973 [2021-11-21 00:01:38,926 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 00:01:38,927 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 00:01:38,929 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 00:01:38,929 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 00:01:38,932 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 00:01:38,933 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:01:38" (1/1) ... [2021-11-21 00:01:38,934 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@456c4c22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:01:38, skipping insertion in model container [2021-11-21 00:01:38,934 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:01:38" (1/1) ... [2021-11-21 00:01:38,941 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 00:01:39,153 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 00:01:43,038 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_3680134b-b231-4fc6-9475-e18c92e1934e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-dec-tulip-tulip.cil.i[454757,454770] [2021-11-21 00:01:43,041 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_3680134b-b231-4fc6-9475-e18c92e1934e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-dec-tulip-tulip.cil.i[454904,454917] [2021-11-21 00:01:43,043 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_3680134b-b231-4fc6-9475-e18c92e1934e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-dec-tulip-tulip.cil.i[455043,455056] [2021-11-21 00:01:43,044 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_3680134b-b231-4fc6-9475-e18c92e1934e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-dec-tulip-tulip.cil.i[455201,455214] [2021-11-21 00:01:43,084 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:01:43,156 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 00:01:43,682 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_3680134b-b231-4fc6-9475-e18c92e1934e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-dec-tulip-tulip.cil.i[454757,454770] [2021-11-21 00:01:43,683 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_3680134b-b231-4fc6-9475-e18c92e1934e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-dec-tulip-tulip.cil.i[454904,454917] [2021-11-21 00:01:43,683 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_3680134b-b231-4fc6-9475-e18c92e1934e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-dec-tulip-tulip.cil.i[455043,455056] [2021-11-21 00:01:43,684 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_3680134b-b231-4fc6-9475-e18c92e1934e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-dec-tulip-tulip.cil.i[455201,455214] [2021-11-21 00:01:43,697 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:01:43,970 INFO L208 MainTranslator]: Completed translation [2021-11-21 00:01:43,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:01:43 WrapperNode [2021-11-21 00:01:43,971 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 00:01:43,972 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 00:01:43,972 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 00:01:43,972 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 00:01:43,980 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:01:43" (1/1) ... [2021-11-21 00:01:44,174 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:01:43" (1/1) ... [2021-11-21 00:01:44,566 INFO L137 Inliner]: procedures = 460, calls = 5099, calls flagged for inlining = 268, calls inlined = 251, statements flattened = 11051 [2021-11-21 00:01:44,567 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 00:01:44,568 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 00:01:44,568 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 00:01:44,569 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 00:01:44,578 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:01:43" (1/1) ... [2021-11-21 00:01:44,578 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:01:43" (1/1) ... [2021-11-21 00:01:44,703 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:01:43" (1/1) ... [2021-11-21 00:01:44,704 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:01:43" (1/1) ... [2021-11-21 00:01:44,927 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:01:43" (1/1) ... [2021-11-21 00:01:45,092 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:01:43" (1/1) ... [2021-11-21 00:01:45,124 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:01:43" (1/1) ... [2021-11-21 00:01:45,167 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 00:01:45,168 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 00:01:45,168 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 00:01:45,168 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 00:01:45,169 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:01:43" (1/1) ... [2021-11-21 00:01:45,176 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:01:45,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3680134b-b231-4fc6-9475-e18c92e1934e/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:01:45,201 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3680134b-b231-4fc6-9475-e18c92e1934e/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 00:01:45,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3680134b-b231-4fc6-9475-e18c92e1934e/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 00:01:45,246 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_up [2021-11-21 00:01:45,246 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_up [2021-11-21 00:01:45,246 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_media_task [2021-11-21 00:01:45,246 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_media_task [2021-11-21 00:01:45,247 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-21 00:01:45,247 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-21 00:01:45,247 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-21 00:01:45,247 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-21 00:01:45,247 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2021-11-21 00:01:45,247 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2021-11-21 00:01:45,248 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-21 00:01:45,248 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-21 00:01:45,248 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_select_media [2021-11-21 00:01:45,248 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_select_media [2021-11-21 00:01:45,248 INFO L130 BoogieDeclarations]: Found specification of procedure __set_bit_le [2021-11-21 00:01:45,248 INFO L138 BoogieDeclarations]: Found implementation of procedure __set_bit_le [2021-11-21 00:01:45,249 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-21 00:01:45,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-21 00:01:45,249 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-21 00:01:45,249 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-21 00:01:45,249 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-21 00:01:45,249 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-21 00:01:45,249 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2021-11-21 00:01:45,250 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2021-11-21 00:01:45,250 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-21 00:01:45,250 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-21 00:01:45,250 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite16 [2021-11-21 00:01:45,250 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite16 [2021-11-21 00:01:45,250 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2021-11-21 00:01:45,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2021-11-21 00:01:45,251 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-11-21 00:01:45,251 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-11-21 00:01:45,251 INFO L130 BoogieDeclarations]: Found specification of procedure crc32_le [2021-11-21 00:01:45,251 INFO L138 BoogieDeclarations]: Found implementation of procedure crc32_le [2021-11-21 00:01:45,251 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-21 00:01:45,252 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-21 00:01:45,252 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-21 00:01:45,252 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-21 00:01:45,252 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-21 00:01:45,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-21 00:01:45,252 INFO L130 BoogieDeclarations]: Found specification of procedure pnic_do_nway [2021-11-21 00:01:45,253 INFO L138 BoogieDeclarations]: Found implementation of procedure pnic_do_nway [2021-11-21 00:01:45,253 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-21 00:01:45,253 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-21 00:01:45,253 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2021-11-21 00:01:45,253 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2021-11-21 00:01:45,253 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-21 00:01:45,254 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-21 00:01:45,254 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-21 00:01:45,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-21 00:01:45,254 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-21 00:01:45,254 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-21 00:01:45,254 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-21 00:01:45,255 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-21 00:01:45,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 00:01:45,255 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_set_wolopts [2021-11-21 00:01:45,255 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_set_wolopts [2021-11-21 00:01:45,255 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_resume [2021-11-21 00:01:45,255 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_resume [2021-11-21 00:01:45,256 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer_sync [2021-11-21 00:01:45,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer_sync [2021-11-21 00:01:45,256 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_interrupt [2021-11-21 00:01:45,256 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_interrupt [2021-11-21 00:01:45,256 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-21 00:01:45,256 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-21 00:01:45,257 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-21 00:01:45,257 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-21 00:01:45,257 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_restart_rxtx___3 [2021-11-21 00:01:45,257 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_restart_rxtx___3 [2021-11-21 00:01:45,257 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_restart_rxtx___1 [2021-11-21 00:01:45,257 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_restart_rxtx___1 [2021-11-21 00:01:45,258 INFO L130 BoogieDeclarations]: Found specification of procedure t21142_media_task [2021-11-21 00:01:45,258 INFO L138 BoogieDeclarations]: Found implementation of procedure t21142_media_task [2021-11-21 00:01:45,258 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-21 00:01:45,258 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_restart_rxtx___4 [2021-11-21 00:01:45,258 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_restart_rxtx___4 [2021-11-21 00:01:45,258 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-21 00:01:45,258 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-21 00:01:45,259 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-21 00:01:45,259 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-21 00:01:45,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-21 00:01:45,259 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-21 00:01:45,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-21 00:01:45,259 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 00:01:45,260 INFO L130 BoogieDeclarations]: Found specification of procedure set_rx_mode [2021-11-21 00:01:45,260 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rx_mode [2021-11-21 00:01:45,260 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-21 00:01:45,260 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-21 00:01:45,260 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-21 00:01:45,260 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-21 00:01:45,261 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-21 00:01:45,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-21 00:01:45,261 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-21 00:01:45,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-21 00:01:45,261 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-21 00:01:45,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-21 00:01:45,262 INFO L130 BoogieDeclarations]: Found specification of procedure pnic_timer [2021-11-21 00:01:45,262 INFO L138 BoogieDeclarations]: Found implementation of procedure pnic_timer [2021-11-21 00:01:45,262 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-21 00:01:45,262 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-21 00:01:45,262 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-21 00:01:45,262 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-21 00:01:45,262 INFO L130 BoogieDeclarations]: Found specification of procedure poll_tulip [2021-11-21 00:01:45,263 INFO L138 BoogieDeclarations]: Found implementation of procedure poll_tulip [2021-11-21 00:01:45,263 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_mdio_write [2021-11-21 00:01:45,263 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_mdio_write [2021-11-21 00:01:45,263 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 00:01:45,263 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-21 00:01:45,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-21 00:01:45,264 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-21 00:01:45,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-21 00:01:45,264 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2021-11-21 00:01:45,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2021-11-21 00:01:45,264 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2021-11-21 00:01:45,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2021-11-21 00:01:45,265 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 00:01:45,265 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-21 00:01:45,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-21 00:01:45,265 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-21 00:01:45,265 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-21 00:01:45,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 00:01:45,266 INFO L130 BoogieDeclarations]: Found specification of procedure t21142_start_nway [2021-11-21 00:01:45,266 INFO L138 BoogieDeclarations]: Found implementation of procedure t21142_start_nway [2021-11-21 00:01:45,266 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_dword [2021-11-21 00:01:45,266 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_dword [2021-11-21 00:01:45,266 INFO L130 BoogieDeclarations]: Found specification of procedure ioread16 [2021-11-21 00:01:45,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread16 [2021-11-21 00:01:45,267 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-21 00:01:45,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-21 00:01:45,267 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2021-11-21 00:01:45,267 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2021-11-21 00:01:45,267 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-21 00:01:45,267 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-21 00:01:45,267 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-21 00:01:45,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-21 00:01:45,268 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-21 00:01:45,268 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-21 00:01:45,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 00:01:45,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 00:01:45,268 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_close [2021-11-21 00:01:45,268 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_close [2021-11-21 00:01:45,269 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-21 00:01:45,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-21 00:01:45,269 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-21 00:01:45,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-21 00:01:45,269 INFO L130 BoogieDeclarations]: Found specification of procedure napi_schedule [2021-11-21 00:01:45,269 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_schedule [2021-11-21 00:01:45,269 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2021-11-21 00:01:45,270 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2021-11-21 00:01:45,270 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_set_power_state [2021-11-21 00:01:45,270 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_set_power_state [2021-11-21 00:01:45,270 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-21 00:01:45,270 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-21 00:01:45,270 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_tulip_cleanup_19_2 [2021-11-21 00:01:45,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_tulip_cleanup_19_2 [2021-11-21 00:01:45,271 INFO L130 BoogieDeclarations]: Found specification of procedure disable_irq [2021-11-21 00:01:45,271 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_irq [2021-11-21 00:01:45,271 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-21 00:01:45,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-21 00:01:45,271 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_tx_timeout [2021-11-21 00:01:45,271 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_tx_timeout [2021-11-21 00:01:45,271 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_check_duplex [2021-11-21 00:01:45,272 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_check_duplex [2021-11-21 00:01:45,272 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-21 00:01:45,272 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-21 00:01:45,272 INFO L130 BoogieDeclarations]: Found specification of procedure bitrev32 [2021-11-21 00:01:45,272 INFO L138 BoogieDeclarations]: Found implementation of procedure bitrev32 [2021-11-21 00:01:45,272 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_le16 [2021-11-21 00:01:45,273 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_le16 [2021-11-21 00:01:45,273 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-21 00:01:45,273 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-21 00:01:45,273 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-21 00:01:45,273 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-21 00:01:45,273 INFO L130 BoogieDeclarations]: Found specification of procedure comet_timer [2021-11-21 00:01:45,273 INFO L138 BoogieDeclarations]: Found implementation of procedure comet_timer [2021-11-21 00:01:45,274 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_le16 [2021-11-21 00:01:45,274 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_le16 [2021-11-21 00:01:45,274 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-21 00:01:45,274 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-21 00:01:45,274 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 00:01:45,274 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_mdio_read [2021-11-21 00:01:45,274 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_mdio_read [2021-11-21 00:01:45,275 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-21 00:01:45,275 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-21 00:01:45,275 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 00:01:45,275 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2021-11-21 00:01:45,275 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2021-11-21 00:01:45,275 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_wake [2021-11-21 00:01:45,276 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_wake [2021-11-21 00:01:45,276 INFO L130 BoogieDeclarations]: Found specification of procedure pci_clear_mwi [2021-11-21 00:01:45,276 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_clear_mwi [2021-11-21 00:01:45,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-21 00:01:45,276 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_down [2021-11-21 00:01:45,276 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_down [2021-11-21 00:01:45,276 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_stop_rxtx___2 [2021-11-21 00:01:45,277 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_stop_rxtx___2 [2021-11-21 00:01:45,277 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-11-21 00:01:45,277 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-11-21 00:01:45,277 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_remove_one [2021-11-21 00:01:45,277 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_remove_one [2021-11-21 00:01:45,277 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-21 00:01:45,277 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-21 00:01:45,278 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq [2021-11-21 00:01:45,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq [2021-11-21 00:01:45,278 INFO L130 BoogieDeclarations]: Found specification of procedure mxic_timer [2021-11-21 00:01:45,278 INFO L138 BoogieDeclarations]: Found implementation of procedure mxic_timer [2021-11-21 00:01:45,278 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-21 00:01:45,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-21 00:01:45,278 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-11-21 00:01:45,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-11-21 00:01:45,279 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_free_ring [2021-11-21 00:01:45,279 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_free_ring [2021-11-21 00:01:45,279 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2021-11-21 00:01:45,279 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2021-11-21 00:01:45,279 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_refill_rx [2021-11-21 00:01:45,279 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_refill_rx [2021-11-21 00:01:45,280 INFO L130 BoogieDeclarations]: Found specification of procedure pnic2_timer [2021-11-21 00:01:45,280 INFO L138 BoogieDeclarations]: Found implementation of procedure pnic2_timer [2021-11-21 00:01:45,280 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-21 00:01:45,280 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-21 00:01:45,280 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-21 00:01:45,280 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-21 00:01:45,281 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2021-11-21 00:01:45,281 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2021-11-21 00:01:45,281 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-21 00:01:45,281 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-21 00:01:45,281 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-21 00:01:45,282 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-21 00:01:45,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 00:01:45,282 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_restart_rxtx [2021-11-21 00:01:45,282 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_restart_rxtx [2021-11-21 00:01:45,282 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-21 00:01:45,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-21 00:01:45,282 INFO L130 BoogieDeclarations]: Found specification of procedure enable_irq [2021-11-21 00:01:45,283 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_irq [2021-11-21 00:01:45,283 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_start_rxtx [2021-11-21 00:01:45,283 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_start_rxtx [2021-11-21 00:01:45,283 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-21 00:01:45,283 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-21 00:01:45,283 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_open [2021-11-21 00:01:45,283 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_open [2021-11-21 00:01:45,284 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2021-11-21 00:01:45,284 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2021-11-21 00:01:45,284 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-21 00:01:45,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-21 00:01:45,284 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2021-11-21 00:01:45,284 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2021-11-21 00:01:45,285 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2021-11-21 00:01:45,285 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2021-11-21 00:01:45,285 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-11-21 00:01:45,285 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-11-21 00:01:45,285 INFO L130 BoogieDeclarations]: Found specification of procedure pnic2_start_nway [2021-11-21 00:01:45,285 INFO L138 BoogieDeclarations]: Found implementation of procedure pnic2_start_nway [2021-11-21 00:01:45,285 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-11-21 00:01:45,286 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-11-21 00:01:45,286 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_read_eeprom [2021-11-21 00:01:45,286 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_read_eeprom [2021-11-21 00:01:45,286 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-21 00:01:45,286 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-21 00:01:45,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 00:01:45,287 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_timer [2021-11-21 00:01:45,287 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_timer [2021-11-21 00:01:45,287 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-21 00:01:45,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-21 00:01:46,408 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 00:01:46,411 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 00:01:47,568 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-21 00:01:56,390 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-21 00:01:56,587 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 00:01:59,974 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 00:01:59,974 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-21 00:01:59,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:01:59 BoogieIcfgContainer [2021-11-21 00:01:59,983 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 00:01:59,985 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 00:01:59,985 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 00:01:59,988 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 00:01:59,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 12:01:38" (1/3) ... [2021-11-21 00:01:59,989 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1af95e26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:01:59, skipping insertion in model container [2021-11-21 00:01:59,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:01:43" (2/3) ... [2021-11-21 00:01:59,990 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1af95e26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:01:59, skipping insertion in model container [2021-11-21 00:01:59,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:01:59" (3/3) ... [2021-11-21 00:01:59,992 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-dec-tulip-tulip.cil.i [2021-11-21 00:02:00,007 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 00:02:00,007 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-21 00:02:00,087 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 00:02:00,103 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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, mLoopAccelerationTechnique=FAST_UPR [2021-11-21 00:02:00,111 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-21 00:02:00,201 INFO L276 IsEmpty]: Start isEmpty. Operand has 2561 states, 1523 states have (on average 1.3545633617859487) internal successors, (2063), 1622 states have internal predecessors, (2063), 914 states have call successors, (914), 124 states have call predecessors, (914), 123 states have return successors, (907), 863 states have call predecessors, (907), 907 states have call successors, (907) [2021-11-21 00:02:00,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-11-21 00:02:00,220 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:02:00,221 INFO L514 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:02:00,222 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:02:00,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:02:00,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1599478790, now seen corresponding path program 1 times [2021-11-21 00:02:00,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:02:00,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317405949] [2021-11-21 00:02:00,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:02:00,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:02:00,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:02:01,226 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2021-11-21 00:02:01,227 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:02:01,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317405949] [2021-11-21 00:02:01,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317405949] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:02:01,228 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:02:01,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:02:01,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318598238] [2021-11-21 00:02:01,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:02:01,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:02:01,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:02:01,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:02:01,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:02:01,314 INFO L87 Difference]: Start difference. First operand has 2561 states, 1523 states have (on average 1.3545633617859487) internal successors, (2063), 1622 states have internal predecessors, (2063), 914 states have call successors, (914), 124 states have call predecessors, (914), 123 states have return successors, (907), 863 states have call predecessors, (907), 907 states have call successors, (907) Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-11-21 00:02:06,552 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:02:07,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:02:07,507 INFO L93 Difference]: Finished difference Result 7403 states and 11260 transitions. [2021-11-21 00:02:07,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:02:07,510 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 150 [2021-11-21 00:02:07,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:02:07,577 INFO L225 Difference]: With dead ends: 7403 [2021-11-21 00:02:07,577 INFO L226 Difference]: Without dead ends: 4858 [2021-11-21 00:02:07,603 INFO L932 BasicCegarLoop]: 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 [2021-11-21 00:02:07,607 INFO L933 BasicCegarLoop]: 4275 mSDtfsCounter, 3515 mSDsluCounter, 3825 mSDsCounter, 0 mSdLazyCounter, 875 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3515 SdHoareTripleChecker+Valid, 7683 SdHoareTripleChecker+Invalid, 883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 875 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2021-11-21 00:02:07,609 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3515 Valid, 7683 Invalid, 883 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 875 Invalid, 1 Unknown, 0 Unchecked, 5.7s Time] [2021-11-21 00:02:07,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4858 states. [2021-11-21 00:02:08,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4858 to 4845. [2021-11-21 00:02:08,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4845 states, 2879 states have (on average 1.3459534560611324) internal successors, (3875), 3064 states have internal predecessors, (3875), 1724 states have call successors, (1724), 241 states have call predecessors, (1724), 240 states have return successors, (1721), 1638 states have call predecessors, (1721), 1721 states have call successors, (1721) [2021-11-21 00:02:08,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4845 states to 4845 states and 7320 transitions. [2021-11-21 00:02:08,204 INFO L78 Accepts]: Start accepts. Automaton has 4845 states and 7320 transitions. Word has length 150 [2021-11-21 00:02:08,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:02:08,209 INFO L470 AbstractCegarLoop]: Abstraction has 4845 states and 7320 transitions. [2021-11-21 00:02:08,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-11-21 00:02:08,214 INFO L276 IsEmpty]: Start isEmpty. Operand 4845 states and 7320 transitions. [2021-11-21 00:02:08,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-11-21 00:02:08,234 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:02:08,234 INFO L514 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:02:08,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 00:02:08,235 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:02:08,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:02:08,237 INFO L85 PathProgramCache]: Analyzing trace with hash 606345749, now seen corresponding path program 1 times [2021-11-21 00:02:08,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:02:08,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754291981] [2021-11-21 00:02:08,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:02:08,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:02:08,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:02:08,937 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2021-11-21 00:02:08,938 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:02:08,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754291981] [2021-11-21 00:02:08,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754291981] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:02:08,939 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:02:08,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:02:08,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160349356] [2021-11-21 00:02:08,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:02:08,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:02:08,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:02:08,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:02:08,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:02:08,945 INFO L87 Difference]: Start difference. First operand 4845 states and 7320 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-11-21 00:02:14,789 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:02:15,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:02:15,397 INFO L93 Difference]: Finished difference Result 10695 states and 16180 transitions. [2021-11-21 00:02:15,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:02:15,398 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 163 [2021-11-21 00:02:15,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:02:15,469 INFO L225 Difference]: With dead ends: 10695 [2021-11-21 00:02:15,470 INFO L226 Difference]: Without dead ends: 5877 [2021-11-21 00:02:15,521 INFO L932 BasicCegarLoop]: 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 [2021-11-21 00:02:15,522 INFO L933 BasicCegarLoop]: 4000 mSDtfsCounter, 2522 mSDsluCounter, 3797 mSDsCounter, 0 mSdLazyCounter, 903 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2522 SdHoareTripleChecker+Valid, 7385 SdHoareTripleChecker+Invalid, 921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 903 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:02:15,526 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2522 Valid, 7385 Invalid, 921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 903 Invalid, 1 Unknown, 0 Unchecked, 6.0s Time] [2021-11-21 00:02:15,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5877 states. [2021-11-21 00:02:16,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5877 to 5870. [2021-11-21 00:02:16,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5870 states, 3539 states have (on average 1.3520768578694546) internal successors, (4785), 3752 states have internal predecessors, (4785), 2041 states have call successors, (2041), 290 states have call predecessors, (2041), 288 states have return successors, (2038), 1941 states have call predecessors, (2038), 2038 states have call successors, (2038) [2021-11-21 00:02:16,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5870 states to 5870 states and 8864 transitions. [2021-11-21 00:02:16,160 INFO L78 Accepts]: Start accepts. Automaton has 5870 states and 8864 transitions. Word has length 163 [2021-11-21 00:02:16,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:02:16,164 INFO L470 AbstractCegarLoop]: Abstraction has 5870 states and 8864 transitions. [2021-11-21 00:02:16,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-11-21 00:02:16,165 INFO L276 IsEmpty]: Start isEmpty. Operand 5870 states and 8864 transitions. [2021-11-21 00:02:16,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-11-21 00:02:16,187 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:02:16,188 INFO L514 BasicCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 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, 1] [2021-11-21 00:02:16,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 00:02:16,191 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:02:16,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:02:16,193 INFO L85 PathProgramCache]: Analyzing trace with hash -913755738, now seen corresponding path program 1 times [2021-11-21 00:02:16,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:02:16,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805705016] [2021-11-21 00:02:16,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:02:16,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:02:16,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:02:16,736 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 767 trivial. 0 not checked. [2021-11-21 00:02:16,736 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:02:16,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805705016] [2021-11-21 00:02:16,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805705016] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:02:16,737 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:02:16,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:02:16,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725844490] [2021-11-21 00:02:16,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:02:16,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:02:16,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:02:16,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:02:16,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:02:16,742 INFO L87 Difference]: Start difference. First operand 5870 states and 8864 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-21 00:02:23,057 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:02:26,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:02:26,189 INFO L93 Difference]: Finished difference Result 9918 states and 14960 transitions. [2021-11-21 00:02:26,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:02:26,191 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 192 [2021-11-21 00:02:26,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:02:26,282 INFO L225 Difference]: With dead ends: 9918 [2021-11-21 00:02:26,283 INFO L226 Difference]: Without dead ends: 9895 [2021-11-21 00:02:26,294 INFO L932 BasicCegarLoop]: 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 [2021-11-21 00:02:26,300 INFO L933 BasicCegarLoop]: 4265 mSDtfsCounter, 3537 mSDsluCounter, 8500 mSDsCounter, 0 mSdLazyCounter, 1289 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3537 SdHoareTripleChecker+Valid, 11912 SdHoareTripleChecker+Invalid, 1290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1289 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2021-11-21 00:02:26,302 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3537 Valid, 11912 Invalid, 1290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1289 Invalid, 1 Unknown, 0 Unchecked, 8.9s Time] [2021-11-21 00:02:26,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9895 states. [2021-11-21 00:02:27,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9895 to 9882. [2021-11-21 00:02:27,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9882 states, 5946 states have (on average 1.3491422805247224) internal successors, (8022), 6301 states have internal predecessors, (8022), 3441 states have call successors, (3441), 495 states have call predecessors, (3441), 493 states have return successors, (3438), 3277 states have call predecessors, (3438), 3438 states have call successors, (3438) [2021-11-21 00:02:27,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9882 states to 9882 states and 14901 transitions. [2021-11-21 00:02:27,175 INFO L78 Accepts]: Start accepts. Automaton has 9882 states and 14901 transitions. Word has length 192 [2021-11-21 00:02:27,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:02:27,176 INFO L470 AbstractCegarLoop]: Abstraction has 9882 states and 14901 transitions. [2021-11-21 00:02:27,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-21 00:02:27,177 INFO L276 IsEmpty]: Start isEmpty. Operand 9882 states and 14901 transitions. [2021-11-21 00:02:27,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-11-21 00:02:27,204 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:02:27,205 INFO L514 BasicCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 5, 5, 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] [2021-11-21 00:02:27,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-21 00:02:27,205 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:02:27,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:02:27,206 INFO L85 PathProgramCache]: Analyzing trace with hash -443860512, now seen corresponding path program 1 times [2021-11-21 00:02:27,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:02:27,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172316455] [2021-11-21 00:02:27,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:02:27,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:02:27,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:02:27,770 INFO L134 CoverageAnalysis]: Checked inductivity of 773 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2021-11-21 00:02:27,771 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:02:27,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172316455] [2021-11-21 00:02:27,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172316455] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:02:27,771 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:02:27,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:02:27,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38472358] [2021-11-21 00:02:27,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:02:27,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:02:27,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:02:27,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:02:27,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:02:27,774 INFO L87 Difference]: Start difference. First operand 9882 states and 14901 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-11-21 00:02:33,622 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:02:34,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:02:34,213 INFO L93 Difference]: Finished difference Result 21476 states and 32400 transitions. [2021-11-21 00:02:34,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:02:34,214 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 210 [2021-11-21 00:02:34,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:02:34,314 INFO L225 Difference]: With dead ends: 21476 [2021-11-21 00:02:34,314 INFO L226 Difference]: Without dead ends: 13259 [2021-11-21 00:02:34,368 INFO L932 BasicCegarLoop]: 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 [2021-11-21 00:02:34,369 INFO L933 BasicCegarLoop]: 5674 mSDtfsCounter, 2526 mSDsluCounter, 3795 mSDsCounter, 0 mSdLazyCounter, 1161 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2526 SdHoareTripleChecker+Valid, 9057 SdHoareTripleChecker+Invalid, 1177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1161 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:02:34,369 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2526 Valid, 9057 Invalid, 1177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1161 Invalid, 1 Unknown, 0 Unchecked, 6.1s Time] [2021-11-21 00:02:34,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13259 states. [2021-11-21 00:02:35,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13259 to 13251. [2021-11-21 00:02:35,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13251 states, 7993 states have (on average 1.349931189791067) internal successors, (10790), 8463 states have internal predecessors, (10790), 4593 states have call successors, (4593), 666 states have call predecessors, (4593), 663 states have return successors, (4590), 4375 states have call predecessors, (4590), 4590 states have call successors, (4590) [2021-11-21 00:02:35,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13251 states to 13251 states and 19973 transitions. [2021-11-21 00:02:35,482 INFO L78 Accepts]: Start accepts. Automaton has 13251 states and 19973 transitions. Word has length 210 [2021-11-21 00:02:35,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:02:35,483 INFO L470 AbstractCegarLoop]: Abstraction has 13251 states and 19973 transitions. [2021-11-21 00:02:35,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-11-21 00:02:35,484 INFO L276 IsEmpty]: Start isEmpty. Operand 13251 states and 19973 transitions. [2021-11-21 00:02:35,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2021-11-21 00:02:35,535 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:02:35,535 INFO L514 BasicCegarLoop]: trace histogram [19, 13, 13, 13, 13, 13, 13, 9, 9, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:02:35,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-21 00:02:35,536 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:02:35,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:02:35,537 INFO L85 PathProgramCache]: Analyzing trace with hash -1032084219, now seen corresponding path program 1 times [2021-11-21 00:02:35,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:02:35,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960719595] [2021-11-21 00:02:35,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:02:35,538 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:02:35,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:02:36,205 INFO L134 CoverageAnalysis]: Checked inductivity of 953 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 953 trivial. 0 not checked. [2021-11-21 00:02:36,206 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:02:36,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960719595] [2021-11-21 00:02:36,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960719595] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:02:36,206 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:02:36,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:02:36,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942708890] [2021-11-21 00:02:36,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:02:36,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:02:36,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:02:36,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:02:36,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:02:36,209 INFO L87 Difference]: Start difference. First operand 13251 states and 19973 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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) [2021-11-21 00:02:41,824 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:02:45,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:02:45,373 INFO L93 Difference]: Finished difference Result 15446 states and 23537 transitions. [2021-11-21 00:02:45,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 00:02:45,373 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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 272 [2021-11-21 00:02:45,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:02:45,461 INFO L225 Difference]: With dead ends: 15446 [2021-11-21 00:02:45,464 INFO L226 Difference]: Without dead ends: 15444 [2021-11-21 00:02:45,473 INFO L932 BasicCegarLoop]: 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 [2021-11-21 00:02:45,474 INFO L933 BasicCegarLoop]: 4960 mSDtfsCounter, 4578 mSDsluCounter, 9280 mSDsCounter, 0 mSdLazyCounter, 1629 mSolverCounterSat, 166 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4747 SdHoareTripleChecker+Valid, 13315 SdHoareTripleChecker+Invalid, 1796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 1629 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2021-11-21 00:02:45,475 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4747 Valid, 13315 Invalid, 1796 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [166 Valid, 1629 Invalid, 1 Unknown, 0 Unchecked, 8.6s Time] [2021-11-21 00:02:45,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15444 states. [2021-11-21 00:02:46,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15444 to 13251. [2021-11-21 00:02:46,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13251 states, 7993 states have (on average 1.3498060803202803) internal successors, (10789), 8463 states have internal predecessors, (10789), 4593 states have call successors, (4593), 666 states have call predecessors, (4593), 663 states have return successors, (4590), 4375 states have call predecessors, (4590), 4590 states have call successors, (4590) [2021-11-21 00:02:46,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13251 states to 13251 states and 19972 transitions. [2021-11-21 00:02:46,593 INFO L78 Accepts]: Start accepts. Automaton has 13251 states and 19972 transitions. Word has length 272 [2021-11-21 00:02:46,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:02:46,597 INFO L470 AbstractCegarLoop]: Abstraction has 13251 states and 19972 transitions. [2021-11-21 00:02:46,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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) [2021-11-21 00:02:46,598 INFO L276 IsEmpty]: Start isEmpty. Operand 13251 states and 19972 transitions. [2021-11-21 00:02:46,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2021-11-21 00:02:46,668 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:02:46,668 INFO L514 BasicCegarLoop]: trace histogram [23, 15, 15, 15, 15, 15, 15, 12, 12, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:02:46,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-21 00:02:46,669 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:02:46,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:02:46,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1178571194, now seen corresponding path program 1 times [2021-11-21 00:02:46,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:02:46,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57357224] [2021-11-21 00:02:46,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:02:46,671 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:02:46,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:02:47,324 INFO L134 CoverageAnalysis]: Checked inductivity of 1379 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1379 trivial. 0 not checked. [2021-11-21 00:02:47,325 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:02:47,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57357224] [2021-11-21 00:02:47,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57357224] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:02:47,325 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:02:47,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:02:47,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721890704] [2021-11-21 00:02:47,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:02:47,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:02:47,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:02:47,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:02:47,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:02:47,328 INFO L87 Difference]: Start difference. First operand 13251 states and 19972 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 2 states have call successors, (53), 1 states have call predecessors, (53), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2021-11-21 00:02:52,369 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:02:53,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:02:53,155 INFO L93 Difference]: Finished difference Result 21250 states and 32299 transitions. [2021-11-21 00:02:53,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:02:53,156 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 2 states have call successors, (53), 1 states have call predecessors, (53), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) Word has length 413 [2021-11-21 00:02:53,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:02:53,236 INFO L225 Difference]: With dead ends: 21250 [2021-11-21 00:02:53,236 INFO L226 Difference]: Without dead ends: 15357 [2021-11-21 00:02:53,270 INFO L932 BasicCegarLoop]: 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 [2021-11-21 00:02:53,271 INFO L933 BasicCegarLoop]: 4116 mSDtfsCounter, 513 mSDsluCounter, 3908 mSDsCounter, 0 mSdLazyCounter, 937 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 722 SdHoareTripleChecker+Valid, 7627 SdHoareTripleChecker+Invalid, 954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 937 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2021-11-21 00:02:53,271 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [722 Valid, 7627 Invalid, 954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 937 Invalid, 1 Unknown, 0 Unchecked, 5.4s Time] [2021-11-21 00:02:53,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15357 states. [2021-11-21 00:02:54,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15357 to 13259. [2021-11-21 00:02:54,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13259 states, 8001 states have (on average 1.349456317960255) internal successors, (10797), 8471 states have internal predecessors, (10797), 4593 states have call successors, (4593), 666 states have call predecessors, (4593), 663 states have return successors, (4590), 4375 states have call predecessors, (4590), 4590 states have call successors, (4590) [2021-11-21 00:02:54,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13259 states to 13259 states and 19980 transitions. [2021-11-21 00:02:54,315 INFO L78 Accepts]: Start accepts. Automaton has 13259 states and 19980 transitions. Word has length 413 [2021-11-21 00:02:54,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:02:54,316 INFO L470 AbstractCegarLoop]: Abstraction has 13259 states and 19980 transitions. [2021-11-21 00:02:54,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 2 states have call successors, (53), 1 states have call predecessors, (53), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2021-11-21 00:02:54,317 INFO L276 IsEmpty]: Start isEmpty. Operand 13259 states and 19980 transitions. [2021-11-21 00:02:54,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2021-11-21 00:02:54,378 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:02:54,379 INFO L514 BasicCegarLoop]: trace histogram [23, 15, 15, 15, 15, 15, 15, 12, 12, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:02:54,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-21 00:02:54,379 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:02:54,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:02:54,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1170876873, now seen corresponding path program 1 times [2021-11-21 00:02:54,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:02:54,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613125497] [2021-11-21 00:02:54,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:02:54,381 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:02:54,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:02:55,080 INFO L134 CoverageAnalysis]: Checked inductivity of 1391 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1391 trivial. 0 not checked. [2021-11-21 00:02:55,081 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:02:55,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613125497] [2021-11-21 00:02:55,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613125497] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:02:55,081 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:02:55,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:02:55,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891579623] [2021-11-21 00:02:55,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:02:55,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:02:55,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:02:55,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:02:55,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:02:55,086 INFO L87 Difference]: Start difference. First operand 13259 states and 19980 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 3 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) [2021-11-21 00:02:58,796 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:03:01,076 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:03:01,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:03:01,856 INFO L93 Difference]: Finished difference Result 20379 states and 30861 transitions. [2021-11-21 00:03:01,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:03:01,857 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 3 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) Word has length 428 [2021-11-21 00:03:01,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:03:01,932 INFO L225 Difference]: With dead ends: 20379 [2021-11-21 00:03:01,932 INFO L226 Difference]: Without dead ends: 14470 [2021-11-21 00:03:01,957 INFO L932 BasicCegarLoop]: 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 [2021-11-21 00:03:01,958 INFO L933 BasicCegarLoop]: 4023 mSDtfsCounter, 565 mSDsluCounter, 3905 mSDsCounter, 0 mSdLazyCounter, 955 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 765 SdHoareTripleChecker+Valid, 7511 SdHoareTripleChecker+Invalid, 969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 955 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:03:01,959 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [765 Valid, 7511 Invalid, 969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 955 Invalid, 1 Unknown, 0 Unchecked, 6.3s Time] [2021-11-21 00:03:01,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14470 states. [2021-11-21 00:03:02,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14470 to 13458. [2021-11-21 00:03:02,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13458 states, 8143 states have (on average 1.3508534937983545) internal successors, (11000), 8620 states have internal predecessors, (11000), 4650 states have call successors, (4650), 666 states have call predecessors, (4650), 663 states have return successors, (4647), 4431 states have call predecessors, (4647), 4647 states have call successors, (4647) [2021-11-21 00:03:03,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13458 states to 13458 states and 20297 transitions. [2021-11-21 00:03:03,042 INFO L78 Accepts]: Start accepts. Automaton has 13458 states and 20297 transitions. Word has length 428 [2021-11-21 00:03:03,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:03:03,045 INFO L470 AbstractCegarLoop]: Abstraction has 13458 states and 20297 transitions. [2021-11-21 00:03:03,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 3 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) [2021-11-21 00:03:03,045 INFO L276 IsEmpty]: Start isEmpty. Operand 13458 states and 20297 transitions. [2021-11-21 00:03:03,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2021-11-21 00:03:03,099 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:03:03,101 INFO L514 BasicCegarLoop]: trace histogram [23, 15, 15, 15, 15, 15, 15, 12, 12, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:03:03,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-21 00:03:03,101 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:03:03,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:03:03,103 INFO L85 PathProgramCache]: Analyzing trace with hash -2078071760, now seen corresponding path program 1 times [2021-11-21 00:03:03,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:03:03,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310066038] [2021-11-21 00:03:03,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:03:03,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:03:03,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:03:03,966 INFO L134 CoverageAnalysis]: Checked inductivity of 1391 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1390 trivial. 0 not checked. [2021-11-21 00:03:03,966 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:03:03,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310066038] [2021-11-21 00:03:03,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310066038] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:03:03,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658541597] [2021-11-21 00:03:03,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:03:03,967 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:03:03,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3680134b-b231-4fc6-9475-e18c92e1934e/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:03:03,974 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3680134b-b231-4fc6-9475-e18c92e1934e/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:03:03,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3680134b-b231-4fc6-9475-e18c92e1934e/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-21 00:03:06,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:03:06,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 7617 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 00:03:06,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:03:07,072 INFO L134 CoverageAnalysis]: Checked inductivity of 1391 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1391 trivial. 0 not checked. [2021-11-21 00:03:07,072 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 00:03:07,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [658541597] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:03:07,073 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 00:03:07,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-21 00:03:07,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411632074] [2021-11-21 00:03:07,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:03:07,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:03:07,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:03:07,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:03:07,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:03:07,076 INFO L87 Difference]: Start difference. First operand 13458 states and 20297 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 3 states have call successors, (57), 2 states have call predecessors, (57), 2 states have return successors, (57), 3 states have call predecessors, (57), 3 states have call successors, (57) [2021-11-21 00:03:11,921 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:03:12,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:03:12,938 INFO L93 Difference]: Finished difference Result 20694 states and 31364 transitions. [2021-11-21 00:03:12,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:03:12,939 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 3 states have call successors, (57), 2 states have call predecessors, (57), 2 states have return successors, (57), 3 states have call predecessors, (57), 3 states have call successors, (57) Word has length 432 [2021-11-21 00:03:12,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:03:13,026 INFO L225 Difference]: With dead ends: 20694 [2021-11-21 00:03:13,027 INFO L226 Difference]: Without dead ends: 14616 [2021-11-21 00:03:13,057 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:03:13,058 INFO L933 BasicCegarLoop]: 4225 mSDtfsCounter, 528 mSDsluCounter, 4000 mSDsCounter, 0 mSdLazyCounter, 1005 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 708 SdHoareTripleChecker+Valid, 7808 SdHoareTripleChecker+Invalid, 1015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1005 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2021-11-21 00:03:13,058 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [708 Valid, 7808 Invalid, 1015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1005 Invalid, 1 Unknown, 0 Unchecked, 5.5s Time] [2021-11-21 00:03:13,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14616 states. [2021-11-21 00:03:14,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14616 to 13596. [2021-11-21 00:03:14,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13596 states, 8246 states have (on average 1.3507154984234782) internal successors, (11138), 8728 states have internal predecessors, (11138), 4685 states have call successors, (4685), 666 states have call predecessors, (4685), 663 states have return successors, (4682), 4465 states have call predecessors, (4682), 4682 states have call successors, (4682) [2021-11-21 00:03:14,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13596 states to 13596 states and 20505 transitions. [2021-11-21 00:03:14,270 INFO L78 Accepts]: Start accepts. Automaton has 13596 states and 20505 transitions. Word has length 432 [2021-11-21 00:03:14,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:03:14,271 INFO L470 AbstractCegarLoop]: Abstraction has 13596 states and 20505 transitions. [2021-11-21 00:03:14,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 3 states have call successors, (57), 2 states have call predecessors, (57), 2 states have return successors, (57), 3 states have call predecessors, (57), 3 states have call successors, (57) [2021-11-21 00:03:14,272 INFO L276 IsEmpty]: Start isEmpty. Operand 13596 states and 20505 transitions. [2021-11-21 00:03:14,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2021-11-21 00:03:14,332 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:03:14,333 INFO L514 BasicCegarLoop]: trace histogram [23, 15, 15, 15, 15, 15, 15, 12, 12, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:03:14,388 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3680134b-b231-4fc6-9475-e18c92e1934e/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-21 00:03:14,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3680134b-b231-4fc6-9475-e18c92e1934e/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-21 00:03:14,560 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:03:14,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:03:14,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1416015219, now seen corresponding path program 1 times [2021-11-21 00:03:14,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:03:14,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408619186] [2021-11-21 00:03:14,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:03:14,562 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:03:14,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:03:15,136 INFO L134 CoverageAnalysis]: Checked inductivity of 1385 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1384 trivial. 0 not checked. [2021-11-21 00:03:15,137 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:03:15,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408619186] [2021-11-21 00:03:15,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408619186] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:03:15,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860828895] [2021-11-21 00:03:15,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:03:15,138 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:03:15,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3680134b-b231-4fc6-9475-e18c92e1934e/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:03:15,140 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3680134b-b231-4fc6-9475-e18c92e1934e/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:03:15,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3680134b-b231-4fc6-9475-e18c92e1934e/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-21 00:03:17,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:03:17,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 7545 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 00:03:17,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:03:18,281 INFO L134 CoverageAnalysis]: Checked inductivity of 1385 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1385 trivial. 0 not checked. [2021-11-21 00:03:18,282 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 00:03:18,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1860828895] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:03:18,282 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 00:03:18,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-21 00:03:18,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222955299] [2021-11-21 00:03:18,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:03:18,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:03:18,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:03:18,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:03:18,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:03:18,284 INFO L87 Difference]: Start difference. First operand 13596 states and 20505 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 3 states have call successors, (56), 2 states have call predecessors, (56), 2 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) [2021-11-21 00:03:23,715 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:03:25,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:03:25,087 INFO L93 Difference]: Finished difference Result 20932 states and 31726 transitions. [2021-11-21 00:03:25,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:03:25,088 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 3 states have call successors, (56), 2 states have call predecessors, (56), 2 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) Word has length 428 [2021-11-21 00:03:25,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:03:25,192 INFO L225 Difference]: With dead ends: 20932 [2021-11-21 00:03:25,192 INFO L226 Difference]: Without dead ends: 14737 [2021-11-21 00:03:25,229 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 428 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:03:25,230 INFO L933 BasicCegarLoop]: 4220 mSDtfsCounter, 549 mSDsluCounter, 3972 mSDsCounter, 0 mSdLazyCounter, 1003 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 750 SdHoareTripleChecker+Valid, 7776 SdHoareTripleChecker+Invalid, 1013 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1003 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2021-11-21 00:03:25,230 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [750 Valid, 7776 Invalid, 1013 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1003 Invalid, 1 Unknown, 0 Unchecked, 6.4s Time] [2021-11-21 00:03:25,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14737 states. [2021-11-21 00:03:26,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14737 to 13714. [2021-11-21 00:03:26,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13714 states, 8333 states have (on average 1.3517340693627744) internal successors, (11264), 8820 states have internal predecessors, (11264), 4716 states have call successors, (4716), 666 states have call predecessors, (4716), 663 states have return successors, (4713), 4495 states have call predecessors, (4713), 4713 states have call successors, (4713) [2021-11-21 00:03:26,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13714 states to 13714 states and 20693 transitions. [2021-11-21 00:03:26,511 INFO L78 Accepts]: Start accepts. Automaton has 13714 states and 20693 transitions. Word has length 428 [2021-11-21 00:03:26,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:03:26,512 INFO L470 AbstractCegarLoop]: Abstraction has 13714 states and 20693 transitions. [2021-11-21 00:03:26,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 3 states have call successors, (56), 2 states have call predecessors, (56), 2 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) [2021-11-21 00:03:26,513 INFO L276 IsEmpty]: Start isEmpty. Operand 13714 states and 20693 transitions. [2021-11-21 00:03:26,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2021-11-21 00:03:26,578 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:03:26,579 INFO L514 BasicCegarLoop]: trace histogram [23, 15, 15, 15, 15, 15, 15, 12, 12, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:03:26,634 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3680134b-b231-4fc6-9475-e18c92e1934e/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-21 00:03:26,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3680134b-b231-4fc6-9475-e18c92e1934e/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-11-21 00:03:26,804 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:03:26,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:03:26,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1893952043, now seen corresponding path program 1 times [2021-11-21 00:03:26,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:03:26,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411771757] [2021-11-21 00:03:26,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:03:26,806 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:03:27,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:03:27,629 INFO L134 CoverageAnalysis]: Checked inductivity of 1384 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1383 trivial. 0 not checked. [2021-11-21 00:03:27,629 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:03:27,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411771757] [2021-11-21 00:03:27,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411771757] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:03:27,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [622487538] [2021-11-21 00:03:27,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:03:27,631 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:03:27,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3680134b-b231-4fc6-9475-e18c92e1934e/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:03:27,632 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3680134b-b231-4fc6-9475-e18c92e1934e/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:03:27,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3680134b-b231-4fc6-9475-e18c92e1934e/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-21 00:03:29,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:03:29,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 7563 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 00:03:29,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:03:30,726 INFO L134 CoverageAnalysis]: Checked inductivity of 1384 backedges. 129 proven. 1 refuted. 0 times theorem prover too weak. 1254 trivial. 0 not checked. [2021-11-21 00:03:30,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:03:31,841 INFO L134 CoverageAnalysis]: Checked inductivity of 1384 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1383 trivial. 0 not checked. [2021-11-21 00:03:31,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [622487538] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:03:31,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [807428335] [2021-11-21 00:03:31,874 INFO L159 IcfgInterpreter]: Started Sifa with 224 locations of interest [2021-11-21 00:03:31,875 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:03:31,882 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:03:31,888 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:03:31,888 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs