./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-winbond-840.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f36d74b-57c8-4633-9c69-71b6a50962ed/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f36d74b-57c8-4633-9c69-71b6a50962ed/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f36d74b-57c8-4633-9c69-71b6a50962ed/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f36d74b-57c8-4633-9c69-71b6a50962ed/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-winbond-840.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f36d74b-57c8-4633-9c69-71b6a50962ed/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f36d74b-57c8-4633-9c69-71b6a50962ed/bin/utaipan-vmNK8stdcF --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 3760bd11965082d9ea48923d727f263a9d5646ba9eaff63a7884fbc3852defe0 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 02:31:13,585 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 02:31:13,588 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 02:31:13,629 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 02:31:13,629 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 02:31:13,631 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 02:31:13,633 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 02:31:13,636 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 02:31:13,639 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 02:31:13,640 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 02:31:13,642 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 02:31:13,643 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 02:31:13,644 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 02:31:13,646 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 02:31:13,648 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 02:31:13,650 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 02:31:13,651 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 02:31:13,652 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 02:31:13,655 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 02:31:13,658 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 02:31:13,660 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 02:31:13,662 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 02:31:13,664 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 02:31:13,665 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 02:31:13,670 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 02:31:13,670 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 02:31:13,671 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 02:31:13,672 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 02:31:13,673 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 02:31:13,674 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 02:31:13,675 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 02:31:13,676 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 02:31:13,677 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 02:31:13,678 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 02:31:13,680 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 02:31:13,680 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 02:31:13,682 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 02:31:13,682 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 02:31:13,683 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 02:31:13,684 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 02:31:13,685 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 02:31:13,686 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f36d74b-57c8-4633-9c69-71b6a50962ed/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-13 02:31:13,718 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 02:31:13,718 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 02:31:13,719 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 02:31:13,720 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 02:31:13,720 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 02:31:13,721 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 02:31:13,721 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 02:31:13,721 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-13 02:31:13,722 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 02:31:13,722 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 02:31:13,722 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-13 02:31:13,723 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-13 02:31:13,723 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 02:31:13,723 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-13 02:31:13,723 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-13 02:31:13,724 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-13 02:31:13,724 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 02:31:13,725 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 02:31:13,725 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 02:31:13,725 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 02:31:13,725 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 02:31:13,726 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 02:31:13,726 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 02:31:13,726 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 02:31:13,726 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 02:31:13,727 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 02:31:13,727 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 02:31:13,727 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 02:31:13,727 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 02:31:13,728 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 02:31:13,728 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 02:31:13,728 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 02:31:13,728 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-13 02:31:13,729 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 02:31:13,729 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 02:31:13,729 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 02:31:13,729 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 02:31:13,730 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_9f36d74b-57c8-4633-9c69-71b6a50962ed/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f36d74b-57c8-4633-9c69-71b6a50962ed/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3760bd11965082d9ea48923d727f263a9d5646ba9eaff63a7884fbc3852defe0 [2021-11-13 02:31:14,054 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 02:31:14,097 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 02:31:14,102 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 02:31:14,104 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 02:31:14,105 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 02:31:14,107 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f36d74b-57c8-4633-9c69-71b6a50962ed/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-winbond-840.cil.i [2021-11-13 02:31:14,197 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f36d74b-57c8-4633-9c69-71b6a50962ed/bin/utaipan-vmNK8stdcF/data/12a66ad58/02a23efb691c473c8c3a79be76ef0a46/FLAG7c52e8309 [2021-11-13 02:31:15,344 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 02:31:15,345 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f36d74b-57c8-4633-9c69-71b6a50962ed/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-winbond-840.cil.i [2021-11-13 02:31:15,428 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f36d74b-57c8-4633-9c69-71b6a50962ed/bin/utaipan-vmNK8stdcF/data/12a66ad58/02a23efb691c473c8c3a79be76ef0a46/FLAG7c52e8309 [2021-11-13 02:31:15,671 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f36d74b-57c8-4633-9c69-71b6a50962ed/bin/utaipan-vmNK8stdcF/data/12a66ad58/02a23efb691c473c8c3a79be76ef0a46 [2021-11-13 02:31:15,674 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 02:31:15,676 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 02:31:15,678 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 02:31:15,678 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 02:31:15,682 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 02:31:15,683 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:31:15" (1/1) ... [2021-11-13 02:31:15,684 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@512230b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:31:15, skipping insertion in model container [2021-11-13 02:31:15,685 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:31:15" (1/1) ... [2021-11-13 02:31:15,693 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 02:31:15,902 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 02:31:18,285 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:31:18,287 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:31:19,255 WARN L228 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_9f36d74b-57c8-4633-9c69-71b6a50962ed/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-winbond-840.cil.i[328915,328928] [2021-11-13 02:31:19,258 WARN L228 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_9f36d74b-57c8-4633-9c69-71b6a50962ed/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-winbond-840.cil.i[329060,329073] [2021-11-13 02:31:19,288 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:31:19,348 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-13 02:31:19,348 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1f602401 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:31:19, skipping insertion in model container [2021-11-13 02:31:19,348 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 02:31:19,349 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-13 02:31:19,351 INFO L158 Benchmark]: Toolchain (without parser) took 3673.74ms. Allocated memory was 98.6MB in the beginning and 142.6MB in the end (delta: 44.0MB). Free memory was 63.7MB in the beginning and 78.7MB in the end (delta: -15.0MB). Peak memory consumption was 46.5MB. Max. memory is 16.1GB. [2021-11-13 02:31:19,352 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 98.6MB. Free memory was 72.7MB in the beginning and 72.6MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 02:31:19,354 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3670.97ms. Allocated memory was 98.6MB in the beginning and 142.6MB in the end (delta: 44.0MB). Free memory was 63.7MB in the beginning and 78.7MB in the end (delta: -15.0MB). Peak memory consumption was 46.5MB. Max. memory is 16.1GB. [2021-11-13 02:31:19,356 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 98.6MB. Free memory was 72.7MB in the beginning and 72.6MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3670.97ms. Allocated memory was 98.6MB in the beginning and 142.6MB in the end (delta: 44.0MB). Free memory was 63.7MB in the beginning and 78.7MB in the end (delta: -15.0MB). Peak memory consumption was 46.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 6543]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f36d74b-57c8-4633-9c69-71b6a50962ed/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f36d74b-57c8-4633-9c69-71b6a50962ed/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f36d74b-57c8-4633-9c69-71b6a50962ed/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f36d74b-57c8-4633-9c69-71b6a50962ed/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-winbond-840.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f36d74b-57c8-4633-9c69-71b6a50962ed/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f36d74b-57c8-4633-9c69-71b6a50962ed/bin/utaipan-vmNK8stdcF --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 3760bd11965082d9ea48923d727f263a9d5646ba9eaff63a7884fbc3852defe0 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 02:31:21,450 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 02:31:21,453 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 02:31:21,482 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 02:31:21,482 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 02:31:21,484 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 02:31:21,486 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 02:31:21,488 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 02:31:21,490 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 02:31:21,492 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 02:31:21,493 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 02:31:21,495 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 02:31:21,495 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 02:31:21,497 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 02:31:21,498 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 02:31:21,500 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 02:31:21,501 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 02:31:21,502 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 02:31:21,505 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 02:31:21,507 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 02:31:21,509 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 02:31:21,510 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 02:31:21,512 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 02:31:21,513 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 02:31:21,516 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 02:31:21,517 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 02:31:21,517 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 02:31:21,518 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 02:31:21,519 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 02:31:21,520 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 02:31:21,520 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 02:31:21,521 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 02:31:21,522 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 02:31:21,523 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 02:31:21,524 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 02:31:21,525 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 02:31:21,525 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 02:31:21,526 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 02:31:21,526 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 02:31:21,527 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 02:31:21,528 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 02:31:21,529 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f36d74b-57c8-4633-9c69-71b6a50962ed/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-13 02:31:21,554 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 02:31:21,555 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 02:31:21,556 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 02:31:21,556 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 02:31:21,556 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 02:31:21,557 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 02:31:21,557 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 02:31:21,557 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 02:31:21,557 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 02:31:21,558 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 02:31:21,559 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 02:31:21,559 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 02:31:21,559 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 02:31:21,559 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 02:31:21,560 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 02:31:21,560 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 02:31:21,560 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 02:31:21,560 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 02:31:21,560 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 02:31:21,561 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 02:31:21,561 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 02:31:21,561 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 02:31:21,562 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 02:31:21,562 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 02:31:21,562 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 02:31:21,562 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 02:31:21,563 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 02:31:21,563 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 02:31:21,563 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-13 02:31:21,563 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 02:31:21,564 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 02:31:21,564 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 02:31:21,564 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 02:31:21,564 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_9f36d74b-57c8-4633-9c69-71b6a50962ed/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f36d74b-57c8-4633-9c69-71b6a50962ed/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3760bd11965082d9ea48923d727f263a9d5646ba9eaff63a7884fbc3852defe0 [2021-11-13 02:31:21,899 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 02:31:21,919 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 02:31:21,922 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 02:31:21,923 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 02:31:21,923 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 02:31:21,925 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f36d74b-57c8-4633-9c69-71b6a50962ed/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-winbond-840.cil.i [2021-11-13 02:31:22,005 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f36d74b-57c8-4633-9c69-71b6a50962ed/bin/utaipan-vmNK8stdcF/data/32e271011/8bb4718c655843c3998917d6882f1568/FLAG03778fe9d [2021-11-13 02:31:23,002 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 02:31:23,003 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f36d74b-57c8-4633-9c69-71b6a50962ed/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-winbond-840.cil.i [2021-11-13 02:31:23,071 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f36d74b-57c8-4633-9c69-71b6a50962ed/bin/utaipan-vmNK8stdcF/data/32e271011/8bb4718c655843c3998917d6882f1568/FLAG03778fe9d [2021-11-13 02:31:23,340 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f36d74b-57c8-4633-9c69-71b6a50962ed/bin/utaipan-vmNK8stdcF/data/32e271011/8bb4718c655843c3998917d6882f1568 [2021-11-13 02:31:23,342 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 02:31:23,343 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 02:31:23,344 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 02:31:23,345 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 02:31:23,348 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 02:31:23,349 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:31:23" (1/1) ... [2021-11-13 02:31:23,350 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54826d90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:31:23, skipping insertion in model container [2021-11-13 02:31:23,350 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:31:23" (1/1) ... [2021-11-13 02:31:23,374 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 02:31:23,576 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 02:31:26,726 WARN L228 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_9f36d74b-57c8-4633-9c69-71b6a50962ed/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-winbond-840.cil.i[328915,328928] [2021-11-13 02:31:26,729 WARN L228 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_9f36d74b-57c8-4633-9c69-71b6a50962ed/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-winbond-840.cil.i[329060,329073] [2021-11-13 02:31:26,787 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:31:26,859 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-13 02:31:26,934 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 02:31:27,297 WARN L228 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_9f36d74b-57c8-4633-9c69-71b6a50962ed/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-winbond-840.cil.i[328915,328928] [2021-11-13 02:31:27,298 WARN L228 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_9f36d74b-57c8-4633-9c69-71b6a50962ed/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-winbond-840.cil.i[329060,329073] [2021-11-13 02:31:27,305 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:31:27,329 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 02:31:27,677 WARN L228 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_9f36d74b-57c8-4633-9c69-71b6a50962ed/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-winbond-840.cil.i[328915,328928] [2021-11-13 02:31:27,678 WARN L228 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_9f36d74b-57c8-4633-9c69-71b6a50962ed/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-winbond-840.cil.i[329060,329073] [2021-11-13 02:31:27,684 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:31:28,065 INFO L208 MainTranslator]: Completed translation [2021-11-13 02:31:28,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:31:28 WrapperNode [2021-11-13 02:31:28,066 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 02:31:28,068 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 02:31:28,068 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 02:31:28,068 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 02:31:28,076 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:31:28" (1/1) ... [2021-11-13 02:31:28,267 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:31:28" (1/1) ... [2021-11-13 02:31:28,556 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 02:31:28,558 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 02:31:28,558 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 02:31:28,559 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 02:31:28,571 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:31:28" (1/1) ... [2021-11-13 02:31:28,572 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:31:28" (1/1) ... [2021-11-13 02:31:28,634 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:31:28" (1/1) ... [2021-11-13 02:31:28,637 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:31:28" (1/1) ... [2021-11-13 02:31:28,820 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:31:28" (1/1) ... [2021-11-13 02:31:28,855 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:31:28" (1/1) ... [2021-11-13 02:31:29,038 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:31:28" (1/1) ... [2021-11-13 02:31:29,076 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 02:31:29,081 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 02:31:29,081 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 02:31:29,081 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 02:31:29,082 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:31:28" (1/1) ... [2021-11-13 02:31:29,090 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 02:31:29,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f36d74b-57c8-4633-9c69-71b6a50962ed/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:31:29,119 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f36d74b-57c8-4633-9c69-71b6a50962ed/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 02:31:29,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f36d74b-57c8-4633-9c69-71b6a50962ed/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 02:31:29,181 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-13 02:31:29,181 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-13 02:31:29,181 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-13 02:31:29,181 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-13 02:31:29,182 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2021-11-13 02:31:29,182 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2021-11-13 02:31:29,182 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_present [2021-11-13 02:31:29,182 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_present [2021-11-13 02:31:29,182 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-13 02:31:29,183 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-13 02:31:29,183 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-13 02:31:29,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-13 02:31:29,183 INFO L130 BoogieDeclarations]: Found specification of procedure w840_remove1 [2021-11-13 02:31:29,184 INFO L138 BoogieDeclarations]: Found implementation of procedure w840_remove1 [2021-11-13 02:31:29,184 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irq_88 [2021-11-13 02:31:29,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irq_88 [2021-11-13 02:31:29,184 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2021-11-13 02:31:29,184 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2021-11-13 02:31:29,185 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-13 02:31:29,185 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-13 02:31:29,185 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2021-11-13 02:31:29,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2021-11-13 02:31:29,185 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-11-13 02:31:29,186 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-11-13 02:31:29,186 INFO L130 BoogieDeclarations]: Found specification of procedure update_link [2021-11-13 02:31:29,186 INFO L138 BoogieDeclarations]: Found implementation of procedure update_link [2021-11-13 02:31:29,186 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-13 02:31:29,186 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-13 02:31:29,187 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-13 02:31:29,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-13 02:31:29,187 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-13 02:31:29,187 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-13 02:31:29,188 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2021-11-13 02:31:29,188 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2021-11-13 02:31:29,188 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-13 02:31:29,189 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-13 02:31:29,189 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-13 02:31:29,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-13 02:31:29,189 INFO L130 BoogieDeclarations]: Found specification of procedure __set_rx_mode [2021-11-13 02:31:29,189 INFO L138 BoogieDeclarations]: Found implementation of procedure __set_rx_mode [2021-11-13 02:31:29,190 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-13 02:31:29,190 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-13 02:31:29,190 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_attach [2021-11-13 02:31:29,190 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_attach [2021-11-13 02:31:29,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 02:31:29,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-13 02:31:29,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-13 02:31:29,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-13 02:31:29,192 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer_sync [2021-11-13 02:31:29,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer_sync [2021-11-13 02:31:29,194 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2021-11-13 02:31:29,194 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2021-11-13 02:31:29,195 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-13 02:31:29,195 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-13 02:31:29,195 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-13 02:31:29,196 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-13 02:31:29,196 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-13 02:31:29,196 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-13 02:31:29,196 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-13 02:31:29,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-13 02:31:29,197 INFO L130 BoogieDeclarations]: Found specification of procedure set_rx_mode [2021-11-13 02:31:29,198 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rx_mode [2021-11-13 02:31:29,198 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-13 02:31:29,198 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-13 02:31:29,198 INFO L130 BoogieDeclarations]: Found specification of procedure init_rxtx_rings [2021-11-13 02:31:29,198 INFO L138 BoogieDeclarations]: Found implementation of procedure init_rxtx_rings [2021-11-13 02:31:29,198 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-13 02:31:29,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-13 02:31:29,199 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-13 02:31:29,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-13 02:31:29,199 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-13 02:31:29,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-13 02:31:29,200 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-11-13 02:31:29,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-11-13 02:31:29,201 INFO L130 BoogieDeclarations]: Found specification of procedure tx_timeout [2021-11-13 02:31:29,201 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_timeout [2021-11-13 02:31:29,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 02:31:29,201 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-13 02:31:29,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-13 02:31:29,202 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-13 02:31:29,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-13 02:31:29,202 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_nway_reset [2021-11-13 02:31:29,203 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_nway_reset [2021-11-13 02:31:29,204 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-13 02:31:29,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-13 02:31:29,204 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-13 02:31:29,204 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-13 02:31:29,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 02:31:29,206 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-13 02:31:29,206 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-13 02:31:29,206 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-13 02:31:29,206 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-13 02:31:29,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-13 02:31:29,207 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-13 02:31:29,207 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_exclusive_spin_is_locked [2021-11-13 02:31:29,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_exclusive_spin_is_locked [2021-11-13 02:31:29,207 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert [2021-11-13 02:31:29,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert [2021-11-13 02:31:29,207 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-13 02:31:29,208 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-13 02:31:29,208 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-13 02:31:29,208 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-13 02:31:29,208 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-13 02:31:29,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-13 02:31:29,209 INFO L130 BoogieDeclarations]: Found specification of procedure update_csr6 [2021-11-13 02:31:29,209 INFO L138 BoogieDeclarations]: Found implementation of procedure update_csr6 [2021-11-13 02:31:29,209 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-13 02:31:29,210 INFO L130 BoogieDeclarations]: Found specification of procedure w840_resume [2021-11-13 02:31:29,210 INFO L138 BoogieDeclarations]: Found implementation of procedure w840_resume [2021-11-13 02:31:29,211 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2021-11-13 02:31:29,212 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2021-11-13 02:31:29,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 02:31:29,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 02:31:29,215 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-13 02:31:29,217 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-13 02:31:29,217 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-13 02:31:29,218 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-13 02:31:29,218 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-13 02:31:29,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-13 02:31:29,220 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-13 02:31:29,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-13 02:31:29,225 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_close [2021-11-13 02:31:29,225 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_close [2021-11-13 02:31:29,225 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-13 02:31:29,225 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2021-11-13 02:31:29,225 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2021-11-13 02:31:29,226 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-13 02:31:29,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-13 02:31:29,226 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_netdev_private [2021-11-13 02:31:29,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_netdev_private [2021-11-13 02:31:29,226 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-13 02:31:29,226 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-13 02:31:29,227 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-13 02:31:29,227 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-13 02:31:29,227 INFO L130 BoogieDeclarations]: Found specification of procedure init_registers [2021-11-13 02:31:29,227 INFO L138 BoogieDeclarations]: Found implementation of procedure init_registers [2021-11-13 02:31:29,227 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-13 02:31:29,228 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-13 02:31:29,228 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-13 02:31:29,228 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-13 02:31:29,228 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 02:31:29,228 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-13 02:31:29,228 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-13 02:31:29,229 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 02:31:29,229 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2021-11-13 02:31:29,229 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2021-11-13 02:31:29,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-13 02:31:29,229 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_irq_87 [2021-11-13 02:31:29,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_irq_87 [2021-11-13 02:31:29,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-13 02:31:29,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-13 02:31:29,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-13 02:31:29,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-13 02:31:29,230 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~C_ULONG~X~C_INT~TO~VOID [2021-11-13 02:31:29,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~C_ULONG~X~C_INT~TO~VOID [2021-11-13 02:31:29,231 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-13 02:31:29,231 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-13 02:31:29,231 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_netdev_private [2021-11-13 02:31:29,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_netdev_private [2021-11-13 02:31:29,232 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-13 02:31:29,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-13 02:31:29,232 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_sync [2021-11-13 02:31:29,232 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_sync [2021-11-13 02:31:29,232 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_open [2021-11-13 02:31:29,232 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_open [2021-11-13 02:31:29,233 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-13 02:31:29,233 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-13 02:31:29,233 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-13 02:31:29,233 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-13 02:31:29,233 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2021-11-13 02:31:29,234 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2021-11-13 02:31:29,234 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-13 02:31:29,234 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-13 02:31:29,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-13 02:31:29,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-13 02:31:29,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-13 02:31:29,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-13 02:31:29,235 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-13 02:31:29,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-13 02:31:29,236 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_95 [2021-11-13 02:31:29,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_95 [2021-11-13 02:31:29,236 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_96 [2021-11-13 02:31:29,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_96 [2021-11-13 02:31:29,237 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2021-11-13 02:31:29,237 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2021-11-13 02:31:29,237 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2021-11-13 02:31:29,237 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2021-11-13 02:31:29,237 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_lock [2021-11-13 02:31:29,238 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_lock [2021-11-13 02:31:29,238 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-13 02:31:29,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-13 02:31:29,238 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-11-13 02:31:29,238 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-11-13 02:31:29,238 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-13 02:31:29,239 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-13 02:31:29,239 INFO L130 BoogieDeclarations]: Found specification of procedure free_rxtx_rings [2021-11-13 02:31:29,239 INFO L138 BoogieDeclarations]: Found implementation of procedure free_rxtx_rings [2021-11-13 02:31:29,239 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-13 02:31:29,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-13 02:31:33,928 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-13 02:32:21,668 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-13 02:32:21,782 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 02:32:21,783 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-13 02:32:21,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:32:21 BoogieIcfgContainer [2021-11-13 02:32:21,848 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 02:32:21,852 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 02:32:21,852 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 02:32:21,855 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 02:32:21,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:31:23" (1/3) ... [2021-11-13 02:32:21,856 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27532357 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:32:21, skipping insertion in model container [2021-11-13 02:32:21,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:31:28" (2/3) ... [2021-11-13 02:32:21,857 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27532357 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:32:21, skipping insertion in model container [2021-11-13 02:32:21,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:32:21" (3/3) ... [2021-11-13 02:32:21,859 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-winbond-840.cil.i [2021-11-13 02:32:21,867 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 02:32:21,867 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 02:32:21,971 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 02:32:21,978 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 [2021-11-13 02:32:21,979 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 02:32:22,052 INFO L276 IsEmpty]: Start isEmpty. Operand has 1675 states, 1150 states have (on average 1.2860869565217392) internal successors, (1479), 1172 states have internal predecessors, (1479), 441 states have call successors, (441), 84 states have call predecessors, (441), 83 states have return successors, (436), 432 states have call predecessors, (436), 436 states have call successors, (436) [2021-11-13 02:32:22,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-11-13 02:32:22,089 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:32:22,090 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:32:22,090 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:32:22,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:32:22,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1902264864, now seen corresponding path program 1 times [2021-11-13 02:32:22,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:32:22,119 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1250234140] [2021-11-13 02:32:22,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:32:22,120 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:32:22,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f36d74b-57c8-4633-9c69-71b6a50962ed/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:32:22,123 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f36d74b-57c8-4633-9c69-71b6a50962ed/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:32:22,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f36d74b-57c8-4633-9c69-71b6a50962ed/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 02:32:27,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:32:27,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 1986 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:32:27,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:32:28,302 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2021-11-13 02:32:28,302 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:32:28,923 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2021-11-13 02:32:28,924 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:32:28,925 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1250234140] [2021-11-13 02:32:28,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1250234140] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:32:28,926 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:32:28,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 02:32:28,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340130639] [2021-11-13 02:32:28,929 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:32:28,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:32:28,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:32:28,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:32:28,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:32:28,973 INFO L87 Difference]: Start difference. First operand has 1675 states, 1150 states have (on average 1.2860869565217392) internal successors, (1479), 1172 states have internal predecessors, (1479), 441 states have call successors, (441), 84 states have call predecessors, (441), 83 states have return successors, (436), 432 states have call predecessors, (436), 436 states have call successors, (436) Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 4 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2021-11-13 02:32:31,400 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.41s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:32:36,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:32:36,170 INFO L93 Difference]: Finished difference Result 5957 states and 8397 transitions. [2021-11-13 02:32:36,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:32:36,173 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 4 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) Word has length 161 [2021-11-13 02:32:36,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:32:36,241 INFO L225 Difference]: With dead ends: 5957 [2021-11-13 02:32:36,242 INFO L226 Difference]: Without dead ends: 4199 [2021-11-13 02:32:36,261 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 318 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:32:36,265 INFO L933 BasicCegarLoop]: 3094 mSDtfsCounter, 3746 mSDsluCounter, 5343 mSDsCounter, 0 mSdLazyCounter, 751 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6067.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3746 SdHoareTripleChecker+Valid, 8437 SdHoareTripleChecker+Invalid, 767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 78.73ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 751 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6590.77ms IncrementalHoareTripleChecker+Time [2021-11-13 02:32:36,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3746 Valid, 8437 Invalid, 767 Unknown, 0 Unchecked, 78.73ms Time], IncrementalHoareTripleChecker [15 Valid, 751 Invalid, 1 Unknown, 0 Unchecked, 6590.77ms Time] [2021-11-13 02:32:36,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4199 states. [2021-11-13 02:32:36,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4199 to 4191. [2021-11-13 02:32:36,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4191 states, 2870 states have (on average 1.254006968641115) internal successors, (3599), 2923 states have internal predecessors, (3599), 1084 states have call successors, (1084), 238 states have call predecessors, (1084), 236 states have return successors, (1094), 1064 states have call predecessors, (1094), 1084 states have call successors, (1094) [2021-11-13 02:32:36,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4191 states to 4191 states and 5777 transitions. [2021-11-13 02:32:36,663 INFO L78 Accepts]: Start accepts. Automaton has 4191 states and 5777 transitions. Word has length 161 [2021-11-13 02:32:36,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:32:36,665 INFO L470 AbstractCegarLoop]: Abstraction has 4191 states and 5777 transitions. [2021-11-13 02:32:36,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 4 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2021-11-13 02:32:36,666 INFO L276 IsEmpty]: Start isEmpty. Operand 4191 states and 5777 transitions. [2021-11-13 02:32:36,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2021-11-13 02:32:36,677 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:32:36,678 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 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] [2021-11-13 02:32:36,751 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f36d74b-57c8-4633-9c69-71b6a50962ed/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-13 02:32:36,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f36d74b-57c8-4633-9c69-71b6a50962ed/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:32:36,902 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:32:36,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:32:36,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1442200294, now seen corresponding path program 1 times [2021-11-13 02:32:36,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:32:36,912 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1953953897] [2021-11-13 02:32:36,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:32:36,913 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:32:36,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f36d74b-57c8-4633-9c69-71b6a50962ed/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:32:36,915 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f36d74b-57c8-4633-9c69-71b6a50962ed/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:32:36,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f36d74b-57c8-4633-9c69-71b6a50962ed/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-13 02:32:42,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:32:43,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 2029 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:32:43,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:32:43,817 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2021-11-13 02:32:43,818 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:32:44,485 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2021-11-13 02:32:44,489 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:32:44,490 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1953953897] [2021-11-13 02:32:44,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1953953897] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:32:44,491 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:32:44,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 02:32:44,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532279250] [2021-11-13 02:32:44,492 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:32:44,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 02:32:44,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:32:44,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 02:32:44,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:32:44,498 INFO L87 Difference]: Start difference. First operand 4191 states and 5777 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2021-11-13 02:32:46,933 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.43s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:32:47,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:32:47,557 INFO L93 Difference]: Finished difference Result 11884 states and 16343 transitions. [2021-11-13 02:32:47,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:32:47,558 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) Word has length 196 [2021-11-13 02:32:47,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:32:47,633 INFO L225 Difference]: With dead ends: 11884 [2021-11-13 02:32:47,633 INFO L226 Difference]: Without dead ends: 7714 [2021-11-13 02:32:47,657 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 389 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:32:47,658 INFO L933 BasicCegarLoop]: 2616 mSDtfsCounter, 1891 mSDsluCounter, 2169 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2614.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1891 SdHoareTripleChecker+Valid, 4785 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.30ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2717.18ms IncrementalHoareTripleChecker+Time [2021-11-13 02:32:47,659 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1891 Valid, 4785 Invalid, 68 Unknown, 0 Unchecked, 16.30ms Time], IncrementalHoareTripleChecker [7 Valid, 60 Invalid, 1 Unknown, 0 Unchecked, 2717.18ms Time] [2021-11-13 02:32:47,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7714 states. [2021-11-13 02:32:48,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7714 to 7708. [2021-11-13 02:32:48,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7708 states, 5232 states have (on average 1.2488532110091743) internal successors, (6534), 5336 states have internal predecessors, (6534), 2009 states have call successors, (2009), 470 states have call predecessors, (2009), 466 states have return successors, (2032), 1965 states have call predecessors, (2032), 2009 states have call successors, (2032) [2021-11-13 02:32:48,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7708 states to 7708 states and 10575 transitions. [2021-11-13 02:32:48,105 INFO L78 Accepts]: Start accepts. Automaton has 7708 states and 10575 transitions. Word has length 196 [2021-11-13 02:32:48,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:32:48,108 INFO L470 AbstractCegarLoop]: Abstraction has 7708 states and 10575 transitions. [2021-11-13 02:32:48,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2021-11-13 02:32:48,109 INFO L276 IsEmpty]: Start isEmpty. Operand 7708 states and 10575 transitions. [2021-11-13 02:32:48,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-11-13 02:32:48,118 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:32:48,118 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 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] [2021-11-13 02:32:48,176 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f36d74b-57c8-4633-9c69-71b6a50962ed/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-13 02:32:48,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f36d74b-57c8-4633-9c69-71b6a50962ed/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:32:48,342 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:32:48,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:32:48,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1923880728, now seen corresponding path program 1 times [2021-11-13 02:32:48,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:32:48,346 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [985099808] [2021-11-13 02:32:48,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:32:48,346 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:32:48,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f36d74b-57c8-4633-9c69-71b6a50962ed/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:32:48,347 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f36d74b-57c8-4633-9c69-71b6a50962ed/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:32:48,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f36d74b-57c8-4633-9c69-71b6a50962ed/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-13 02:32:53,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:32:53,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 2060 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:32:53,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:32:54,038 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2021-11-13 02:32:54,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:32:54,570 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2021-11-13 02:32:54,570 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:32:54,570 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [985099808] [2021-11-13 02:32:54,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [985099808] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:32:54,571 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:32:54,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 02:32:54,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109642120] [2021-11-13 02:32:54,571 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:32:54,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:32:54,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:32:54,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:32:54,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:32:54,574 INFO L87 Difference]: Start difference. First operand 7708 states and 10575 transitions. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 4 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (35), 4 states have call predecessors, (35), 4 states have call successors, (35) [2021-11-13 02:32:56,865 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:33:02,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:33:02,989 INFO L93 Difference]: Finished difference Result 23675 states and 32290 transitions. [2021-11-13 02:33:02,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:33:02,990 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 4 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (35), 4 states have call predecessors, (35), 4 states have call successors, (35) Word has length 190 [2021-11-13 02:33:02,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:33:03,181 INFO L225 Difference]: With dead ends: 23675 [2021-11-13 02:33:03,182 INFO L226 Difference]: Without dead ends: 15988 [2021-11-13 02:33:03,239 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 376 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:33:03,243 INFO L933 BasicCegarLoop]: 3264 mSDtfsCounter, 3562 mSDsluCounter, 3706 mSDsCounter, 0 mSdLazyCounter, 915 mSolverCounterSat, 39 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6967.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3562 SdHoareTripleChecker+Valid, 6970 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 44.74ms SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 915 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7547.09ms IncrementalHoareTripleChecker+Time [2021-11-13 02:33:03,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3562 Valid, 6970 Invalid, 955 Unknown, 0 Unchecked, 44.74ms Time], IncrementalHoareTripleChecker [39 Valid, 915 Invalid, 1 Unknown, 0 Unchecked, 7547.09ms Time] [2021-11-13 02:33:03,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15988 states. [2021-11-13 02:33:04,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15988 to 15972. [2021-11-13 02:33:04,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15972 states, 11029 states have (on average 1.2542388249161303) internal successors, (13833), 11229 states have internal predecessors, (13833), 3886 states have call successors, (3886), 1064 states have call predecessors, (3886), 1056 states have return successors, (3909), 3821 states have call predecessors, (3909), 3886 states have call successors, (3909) [2021-11-13 02:33:04,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15972 states to 15972 states and 21628 transitions. [2021-11-13 02:33:04,490 INFO L78 Accepts]: Start accepts. Automaton has 15972 states and 21628 transitions. Word has length 190 [2021-11-13 02:33:04,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:33:04,490 INFO L470 AbstractCegarLoop]: Abstraction has 15972 states and 21628 transitions. [2021-11-13 02:33:04,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 4 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (35), 4 states have call predecessors, (35), 4 states have call successors, (35) [2021-11-13 02:33:04,493 INFO L276 IsEmpty]: Start isEmpty. Operand 15972 states and 21628 transitions. [2021-11-13 02:33:04,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2021-11-13 02:33:04,506 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:33:04,506 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 8, 8, 8, 8, 8, 8, 6, 6, 6, 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] [2021-11-13 02:33:04,571 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f36d74b-57c8-4633-9c69-71b6a50962ed/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-13 02:33:04,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f36d74b-57c8-4633-9c69-71b6a50962ed/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:33:04,730 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:33:04,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:33:04,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1994773773, now seen corresponding path program 1 times [2021-11-13 02:33:04,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:33:04,735 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [881839426] [2021-11-13 02:33:04,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:33:04,736 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:33:04,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f36d74b-57c8-4633-9c69-71b6a50962ed/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:33:04,737 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f36d74b-57c8-4633-9c69-71b6a50962ed/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:33:04,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f36d74b-57c8-4633-9c69-71b6a50962ed/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-13 02:33:10,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:33:10,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 2243 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:33:10,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:33:11,546 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2021-11-13 02:33:11,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:33:12,429 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 432 trivial. 0 not checked. [2021-11-13 02:33:12,430 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:33:12,430 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [881839426] [2021-11-13 02:33:12,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [881839426] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:33:12,430 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:33:12,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 02:33:12,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47071070] [2021-11-13 02:33:12,431 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:33:12,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:33:12,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:33:12,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:33:12,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:33:12,433 INFO L87 Difference]: Start difference. First operand 15972 states and 21628 transitions. Second operand has 4 states, 4 states have (on average 48.25) internal successors, (193), 4 states have internal predecessors, (193), 4 states have call successors, (64), 3 states have call predecessors, (64), 3 states have return successors, (60), 4 states have call predecessors, (60), 4 states have call successors, (60) [2021-11-13 02:33:14,747 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:33:20,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:33:20,053 INFO L93 Difference]: Finished difference Result 41943 states and 56601 transitions. [2021-11-13 02:33:20,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:33:20,054 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 48.25) internal successors, (193), 4 states have internal predecessors, (193), 4 states have call successors, (64), 3 states have call predecessors, (64), 3 states have return successors, (60), 4 states have call predecessors, (60), 4 states have call successors, (60) Word has length 282 [2021-11-13 02:33:20,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:33:20,195 INFO L225 Difference]: With dead ends: 41943 [2021-11-13 02:33:20,195 INFO L226 Difference]: Without dead ends: 25992 [2021-11-13 02:33:20,279 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 562 GetRequests, 560 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:33:20,282 INFO L933 BasicCegarLoop]: 4173 mSDtfsCounter, 3516 mSDsluCounter, 3448 mSDsCounter, 0 mSdLazyCounter, 914 mSolverCounterSat, 36 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6208.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3516 SdHoareTripleChecker+Valid, 7621 SdHoareTripleChecker+Invalid, 951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 30.20ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 914 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6755.41ms IncrementalHoareTripleChecker+Time [2021-11-13 02:33:20,284 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3516 Valid, 7621 Invalid, 951 Unknown, 0 Unchecked, 30.20ms Time], IncrementalHoareTripleChecker [36 Valid, 914 Invalid, 1 Unknown, 0 Unchecked, 6755.41ms Time] [2021-11-13 02:33:20,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25992 states. [2021-11-13 02:33:22,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25992 to 25976. [2021-11-13 02:33:22,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25976 states, 17961 states have (on average 1.2546628806859306) internal successors, (22535), 18272 states have internal predecessors, (22535), 6170 states have call successors, (6170), 1852 states have call predecessors, (6170), 1844 states have return successors, (6193), 6093 states have call predecessors, (6193), 6170 states have call successors, (6193) [2021-11-13 02:33:22,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25976 states to 25976 states and 34898 transitions. [2021-11-13 02:33:22,341 INFO L78 Accepts]: Start accepts. Automaton has 25976 states and 34898 transitions. Word has length 282 [2021-11-13 02:33:22,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:33:22,342 INFO L470 AbstractCegarLoop]: Abstraction has 25976 states and 34898 transitions. [2021-11-13 02:33:22,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.25) internal successors, (193), 4 states have internal predecessors, (193), 4 states have call successors, (64), 3 states have call predecessors, (64), 3 states have return successors, (60), 4 states have call predecessors, (60), 4 states have call successors, (60) [2021-11-13 02:33:22,343 INFO L276 IsEmpty]: Start isEmpty. Operand 25976 states and 34898 transitions. [2021-11-13 02:33:22,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2021-11-13 02:33:22,364 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:33:22,365 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 9, 9, 9, 8, 8, 8, 8, 8, 8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:33:22,418 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f36d74b-57c8-4633-9c69-71b6a50962ed/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-11-13 02:33:22,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f36d74b-57c8-4633-9c69-71b6a50962ed/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:33:22,586 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:33:22,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:33:22,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1351546958, now seen corresponding path program 1 times [2021-11-13 02:33:22,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:33:22,590 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1964804449] [2021-11-13 02:33:22,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:33:22,590 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:33:22,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f36d74b-57c8-4633-9c69-71b6a50962ed/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:33:22,591 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f36d74b-57c8-4633-9c69-71b6a50962ed/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:33:22,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f36d74b-57c8-4633-9c69-71b6a50962ed/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-13 02:33:27,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:33:27,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 2384 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:33:27,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:33:28,823 INFO L134 CoverageAnalysis]: Checked inductivity of 621 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 534 trivial. 0 not checked. [2021-11-13 02:33:28,824 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:33:29,749 INFO L134 CoverageAnalysis]: Checked inductivity of 621 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 605 trivial. 0 not checked. [2021-11-13 02:33:29,749 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:33:29,749 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1964804449] [2021-11-13 02:33:29,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1964804449] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:33:29,750 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:33:29,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 02:33:29,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055789079] [2021-11-13 02:33:29,751 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:33:29,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:33:29,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:33:29,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:33:29,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:33:29,754 INFO L87 Difference]: Start difference. First operand 25976 states and 34898 transitions. Second operand has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 4 states have call successors, (65), 3 states have call predecessors, (65), 3 states have return successors, (61), 4 states have call predecessors, (61), 4 states have call successors, (61) [2021-11-13 02:33:32,095 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:33:37,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:33:37,483 INFO L93 Difference]: Finished difference Result 60601 states and 81449 transitions. [2021-11-13 02:33:37,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:33:37,484 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 4 states have call successors, (65), 3 states have call predecessors, (65), 3 states have return successors, (61), 4 states have call predecessors, (61), 4 states have call successors, (61) Word has length 354 [2021-11-13 02:33:37,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:33:37,671 INFO L225 Difference]: With dead ends: 60601 [2021-11-13 02:33:37,671 INFO L226 Difference]: Without dead ends: 34646 [2021-11-13 02:33:37,752 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 706 GetRequests, 704 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:33:37,753 INFO L933 BasicCegarLoop]: 4081 mSDtfsCounter, 3511 mSDsluCounter, 3635 mSDsCounter, 0 mSdLazyCounter, 907 mSolverCounterSat, 32 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5778.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3511 SdHoareTripleChecker+Valid, 7716 SdHoareTripleChecker+Invalid, 940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.76ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 907 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6300.18ms IncrementalHoareTripleChecker+Time [2021-11-13 02:33:37,754 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3511 Valid, 7716 Invalid, 940 Unknown, 0 Unchecked, 24.76ms Time], IncrementalHoareTripleChecker [32 Valid, 907 Invalid, 1 Unknown, 0 Unchecked, 6300.18ms Time] [2021-11-13 02:33:37,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34646 states. [2021-11-13 02:33:40,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34646 to 34630. [2021-11-13 02:33:40,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34630 states, 24044 states have (on average 1.2571535518216603) internal successors, (30227), 24448 states have internal predecessors, (30227), 8128 states have call successors, (8128), 2469 states have call predecessors, (8128), 2457 states have return successors, (8151), 8031 states have call predecessors, (8151), 8128 states have call successors, (8151) [2021-11-13 02:33:40,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34630 states to 34630 states and 46506 transitions. [2021-11-13 02:33:40,643 INFO L78 Accepts]: Start accepts. Automaton has 34630 states and 46506 transitions. Word has length 354 [2021-11-13 02:33:40,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:33:40,644 INFO L470 AbstractCegarLoop]: Abstraction has 34630 states and 46506 transitions. [2021-11-13 02:33:40,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 4 states have call successors, (65), 3 states have call predecessors, (65), 3 states have return successors, (61), 4 states have call predecessors, (61), 4 states have call successors, (61) [2021-11-13 02:33:40,645 INFO L276 IsEmpty]: Start isEmpty. Operand 34630 states and 46506 transitions. [2021-11-13 02:33:40,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2021-11-13 02:33:40,669 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:33:40,669 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 9, 9, 9, 8, 8, 8, 8, 8, 8, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-13 02:33:40,743 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f36d74b-57c8-4633-9c69-71b6a50962ed/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-13 02:33:40,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f36d74b-57c8-4633-9c69-71b6a50962ed/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:33:40,894 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:33:40,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:33:40,895 INFO L85 PathProgramCache]: Analyzing trace with hash -798884878, now seen corresponding path program 1 times [2021-11-13 02:33:40,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:33:40,901 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [274267022] [2021-11-13 02:33:40,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:33:40,901 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:33:40,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f36d74b-57c8-4633-9c69-71b6a50962ed/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:33:40,906 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f36d74b-57c8-4633-9c69-71b6a50962ed/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:33:40,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f36d74b-57c8-4633-9c69-71b6a50962ed/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-13 02:33:46,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:33:47,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 2372 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:33:47,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:33:48,101 INFO L134 CoverageAnalysis]: Checked inductivity of 730 backedges. 193 proven. 0 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2021-11-13 02:33:48,101 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:33:49,045 INFO L134 CoverageAnalysis]: Checked inductivity of 730 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 692 trivial. 0 not checked. [2021-11-13 02:33:49,045 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:33:49,045 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [274267022] [2021-11-13 02:33:49,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [274267022] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:33:49,045 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:33:49,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 02:33:49,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62174155] [2021-11-13 02:33:49,046 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:33:49,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:33:49,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:33:49,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:33:49,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:33:49,048 INFO L87 Difference]: Start difference. First operand 34630 states and 46506 transitions. Second operand has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 4 states have call successors, (60), 3 states have call predecessors, (60), 3 states have return successors, (55), 4 states have call predecessors, (55), 4 states have call successors, (55) [2021-11-13 02:33:51,498 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.45s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:33:56,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:33:56,950 INFO L93 Difference]: Finished difference Result 76652 states and 102955 transitions. [2021-11-13 02:33:56,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:33:56,951 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 4 states have call successors, (60), 3 states have call predecessors, (60), 3 states have return successors, (55), 4 states have call predecessors, (55), 4 states have call successors, (55) Word has length 351 [2021-11-13 02:33:56,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:33:57,188 INFO L225 Difference]: With dead ends: 76652 [2021-11-13 02:33:57,188 INFO L226 Difference]: Without dead ends: 42064 [2021-11-13 02:33:57,481 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 700 GetRequests, 698 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:33:57,481 INFO L933 BasicCegarLoop]: 3947 mSDtfsCounter, 3690 mSDsluCounter, 2907 mSDsCounter, 0 mSdLazyCounter, 827 mSolverCounterSat, 32 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5562.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3690 SdHoareTripleChecker+Valid, 6854 SdHoareTripleChecker+Invalid, 860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.41ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 827 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6024.74ms IncrementalHoareTripleChecker+Time [2021-11-13 02:33:57,482 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3690 Valid, 6854 Invalid, 860 Unknown, 0 Unchecked, 23.41ms Time], IncrementalHoareTripleChecker [32 Valid, 827 Invalid, 1 Unknown, 0 Unchecked, 6024.74ms Time] [2021-11-13 02:33:57,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42064 states. [2021-11-13 02:33:59,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42064 to 42048. [2021-11-13 02:34:00,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42048 states, 29292 states have (on average 1.257851973235013) internal successors, (36845), 29780 states have internal predecessors, (36845), 9767 states have call successors, (9767), 3000 states have call predecessors, (9767), 2988 states have return successors, (9790), 9658 states have call predecessors, (9790), 9767 states have call successors, (9790) [2021-11-13 02:34:00,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42048 states to 42048 states and 56402 transitions. [2021-11-13 02:34:00,185 INFO L78 Accepts]: Start accepts. Automaton has 42048 states and 56402 transitions. Word has length 351 [2021-11-13 02:34:00,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:34:00,187 INFO L470 AbstractCegarLoop]: Abstraction has 42048 states and 56402 transitions. [2021-11-13 02:34:00,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 4 states have call successors, (60), 3 states have call predecessors, (60), 3 states have return successors, (55), 4 states have call predecessors, (55), 4 states have call successors, (55) [2021-11-13 02:34:00,188 INFO L276 IsEmpty]: Start isEmpty. Operand 42048 states and 56402 transitions. [2021-11-13 02:34:00,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2021-11-13 02:34:00,217 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:34:00,217 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 11, 11, 11, 8, 8, 8, 8, 8, 8, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:34:00,286 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f36d74b-57c8-4633-9c69-71b6a50962ed/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-13 02:34:00,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f36d74b-57c8-4633-9c69-71b6a50962ed/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:34:00,435 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:34:00,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:34:00,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1333971639, now seen corresponding path program 1 times [2021-11-13 02:34:00,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:34:00,441 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1110971707] [2021-11-13 02:34:00,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:34:00,442 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:34:00,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f36d74b-57c8-4633-9c69-71b6a50962ed/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:34:00,443 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f36d74b-57c8-4633-9c69-71b6a50962ed/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:34:00,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f36d74b-57c8-4633-9c69-71b6a50962ed/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-13 02:34:06,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:34:06,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 2494 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:34:06,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:34:07,408 INFO L134 CoverageAnalysis]: Checked inductivity of 967 backedges. 252 proven. 0 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2021-11-13 02:34:07,409 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:34:08,393 INFO L134 CoverageAnalysis]: Checked inductivity of 967 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 896 trivial. 0 not checked. [2021-11-13 02:34:08,393 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:34:08,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1110971707] [2021-11-13 02:34:08,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1110971707] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:34:08,393 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:34:08,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 02:34:08,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979620540] [2021-11-13 02:34:08,394 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:34:08,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:34:08,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:34:08,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:34:08,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:34:08,396 INFO L87 Difference]: Start difference. First operand 42048 states and 56402 transitions. Second operand has 4 states, 4 states have (on average 56.5) internal successors, (226), 4 states have internal predecessors, (226), 4 states have call successors, (64), 3 states have call predecessors, (64), 3 states have return successors, (59), 4 states have call predecessors, (59), 4 states have call successors, (59) [2021-11-13 02:34:10,732 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:34:17,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:34:17,632 INFO L93 Difference]: Finished difference Result 91452 states and 122729 transitions. [2021-11-13 02:34:17,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:34:17,633 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.5) internal successors, (226), 4 states have internal predecessors, (226), 4 states have call successors, (64), 3 states have call predecessors, (64), 3 states have return successors, (59), 4 states have call predecessors, (59), 4 states have call successors, (59) Word has length 416 [2021-11-13 02:34:17,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:34:18,010 INFO L225 Difference]: With dead ends: 91452 [2021-11-13 02:34:18,011 INFO L226 Difference]: Without dead ends: 49446 [2021-11-13 02:34:18,119 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 830 GetRequests, 828 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:34:18,121 INFO L933 BasicCegarLoop]: 3705 mSDtfsCounter, 3676 mSDsluCounter, 2734 mSDsCounter, 0 mSdLazyCounter, 935 mSolverCounterSat, 300 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6371.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3676 SdHoareTripleChecker+Valid, 6439 SdHoareTripleChecker+Invalid, 1236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.12ms SdHoareTripleChecker+Time, 300 IncrementalHoareTripleChecker+Valid, 935 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6972.16ms IncrementalHoareTripleChecker+Time [2021-11-13 02:34:18,121 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3676 Valid, 6439 Invalid, 1236 Unknown, 0 Unchecked, 23.12ms Time], IncrementalHoareTripleChecker [300 Valid, 935 Invalid, 1 Unknown, 0 Unchecked, 6972.16ms Time] [2021-11-13 02:34:18,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49446 states. [2021-11-13 02:34:20,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49446 to 49430. [2021-11-13 02:34:20,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49430 states, 34526 states have (on average 1.2591959682558072) internal successors, (43475), 35098 states have internal predecessors, (43475), 11403 states have call successors, (11403), 3512 states have call predecessors, (11403), 3500 states have return successors, (11426), 11282 states have call predecessors, (11426), 11403 states have call successors, (11426) [2021-11-13 02:34:20,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49430 states to 49430 states and 66304 transitions. [2021-11-13 02:34:20,749 INFO L78 Accepts]: Start accepts. Automaton has 49430 states and 66304 transitions. Word has length 416 [2021-11-13 02:34:20,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:34:20,751 INFO L470 AbstractCegarLoop]: Abstraction has 49430 states and 66304 transitions. [2021-11-13 02:34:20,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.5) internal successors, (226), 4 states have internal predecessors, (226), 4 states have call successors, (64), 3 states have call predecessors, (64), 3 states have return successors, (59), 4 states have call predecessors, (59), 4 states have call successors, (59) [2021-11-13 02:34:20,751 INFO L276 IsEmpty]: Start isEmpty. Operand 49430 states and 66304 transitions. [2021-11-13 02:34:20,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2021-11-13 02:34:20,785 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:34:20,785 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 12, 12, 12, 8, 8, 8, 8, 8, 8, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:34:20,857 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f36d74b-57c8-4633-9c69-71b6a50962ed/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-13 02:34:20,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f36d74b-57c8-4633-9c69-71b6a50962ed/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:34:20,999 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:34:20,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:34:21,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1353331897, now seen corresponding path program 1 times [2021-11-13 02:34:21,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:34:21,007 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1558396715] [2021-11-13 02:34:21,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:34:21,008 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:34:21,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f36d74b-57c8-4633-9c69-71b6a50962ed/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:34:21,009 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f36d74b-57c8-4633-9c69-71b6a50962ed/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:34:21,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f36d74b-57c8-4633-9c69-71b6a50962ed/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-13 02:34:26,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:34:27,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 2505 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-13 02:34:27,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:34:28,896 INFO L134 CoverageAnalysis]: Checked inductivity of 1019 backedges. 347 proven. 0 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2021-11-13 02:34:28,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:34:30,898 INFO L134 CoverageAnalysis]: Checked inductivity of 1019 backedges. 113 proven. 3 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2021-11-13 02:34:30,899 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:34:30,899 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1558396715] [2021-11-13 02:34:30,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1558396715] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 02:34:30,899 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 02:34:30,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [12] total 16 [2021-11-13 02:34:30,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562111820] [2021-11-13 02:34:30,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:34:30,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-13 02:34:30,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:34:30,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-13 02:34:30,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2021-11-13 02:34:30,902 INFO L87 Difference]: Start difference. First operand 49430 states and 66304 transitions. Second operand has 12 states, 11 states have (on average 17.363636363636363) internal successors, (191), 11 states have internal predecessors, (191), 5 states have call successors, (50), 3 states have call predecessors, (50), 5 states have return successors, (45), 5 states have call predecessors, (45), 5 states have call successors, (45) [2021-11-13 02:34:33,351 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.45s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:34:35,370 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:34:56,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:34:56,040 INFO L93 Difference]: Finished difference Result 169451 states and 230534 transitions. [2021-11-13 02:34:56,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-13 02:34:56,040 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 17.363636363636363) internal successors, (191), 11 states have internal predecessors, (191), 5 states have call successors, (50), 3 states have call predecessors, (50), 5 states have return successors, (45), 5 states have call predecessors, (45), 5 states have call successors, (45) Word has length 425 [2021-11-13 02:34:56,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:34:56,672 INFO L225 Difference]: With dead ends: 169451 [2021-11-13 02:34:56,673 INFO L226 Difference]: Without dead ends: 119973 [2021-11-13 02:34:56,835 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 867 GetRequests, 838 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=150, Invalid=780, Unknown=0, NotChecked=0, Total=930 [2021-11-13 02:34:56,836 INFO L933 BasicCegarLoop]: 3764 mSDtfsCounter, 7487 mSDsluCounter, 34026 mSDsCounter, 0 mSdLazyCounter, 3512 mSolverCounterSat, 1759 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17360.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7520 SdHoareTripleChecker+Valid, 37790 SdHoareTripleChecker+Invalid, 5273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 129.52ms SdHoareTripleChecker+Time, 1759 IncrementalHoareTripleChecker+Valid, 3512 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18706.94ms IncrementalHoareTripleChecker+Time [2021-11-13 02:34:56,836 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7520 Valid, 37790 Invalid, 5273 Unknown, 0 Unchecked, 129.52ms Time], IncrementalHoareTripleChecker [1759 Valid, 3512 Invalid, 2 Unknown, 0 Unchecked, 18706.94ms Time] [2021-11-13 02:34:56,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119973 states. [2021-11-13 02:35:02,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119973 to 96394. [2021-11-13 02:35:02,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96394 states, 67235 states have (on average 1.2594035844426266) internal successors, (84676), 68359 states have internal predecessors, (84676), 22265 states have call successors, (22265), 6917 states have call predecessors, (22265), 6893 states have return successors, (22311), 22014 states have call predecessors, (22311), 22265 states have call successors, (22311) [2021-11-13 02:35:03,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96394 states to 96394 states and 129252 transitions. [2021-11-13 02:35:03,236 INFO L78 Accepts]: Start accepts. Automaton has 96394 states and 129252 transitions. Word has length 425 [2021-11-13 02:35:03,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:35:03,237 INFO L470 AbstractCegarLoop]: Abstraction has 96394 states and 129252 transitions. [2021-11-13 02:35:03,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 17.363636363636363) internal successors, (191), 11 states have internal predecessors, (191), 5 states have call successors, (50), 3 states have call predecessors, (50), 5 states have return successors, (45), 5 states have call predecessors, (45), 5 states have call successors, (45) [2021-11-13 02:35:03,237 INFO L276 IsEmpty]: Start isEmpty. Operand 96394 states and 129252 transitions. [2021-11-13 02:35:03,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2021-11-13 02:35:03,271 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:35:03,271 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 12, 12, 12, 8, 8, 8, 8, 8, 8, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-13 02:35:03,329 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f36d74b-57c8-4633-9c69-71b6a50962ed/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-13 02:35:03,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f36d74b-57c8-4633-9c69-71b6a50962ed/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:35:03,494 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:35:03,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:35:03,495 INFO L85 PathProgramCache]: Analyzing trace with hash 432637712, now seen corresponding path program 1 times [2021-11-13 02:35:03,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:35:03,500 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [596729193] [2021-11-13 02:35:03,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:35:03,500 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:35:03,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f36d74b-57c8-4633-9c69-71b6a50962ed/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:35:03,501 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f36d74b-57c8-4633-9c69-71b6a50962ed/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:35:03,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f36d74b-57c8-4633-9c69-71b6a50962ed/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-13 02:35:08,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:35:08,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 2637 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:35:08,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:35:09,604 INFO L134 CoverageAnalysis]: Checked inductivity of 1029 backedges. 307 proven. 0 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2021-11-13 02:35:09,605 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:35:10,870 INFO L134 CoverageAnalysis]: Checked inductivity of 1029 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 953 trivial. 0 not checked. [2021-11-13 02:35:10,870 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:35:10,870 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [596729193] [2021-11-13 02:35:10,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [596729193] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:35:10,871 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:35:10,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 02:35:10,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936766055] [2021-11-13 02:35:10,871 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:35:10,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:35:10,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:35:10,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:35:10,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:35:10,874 INFO L87 Difference]: Start difference. First operand 96394 states and 129252 transitions. Second operand has 4 states, 4 states have (on average 57.5) internal successors, (230), 4 states have internal predecessors, (230), 4 states have call successors, (60), 3 states have call predecessors, (60), 3 states have return successors, (56), 4 states have call predecessors, (56), 4 states have call successors, (56) [2021-11-13 02:35:13,140 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:35:22,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:35:22,027 INFO L93 Difference]: Finished difference Result 176872 states and 237381 transitions. [2021-11-13 02:35:22,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:35:22,028 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.5) internal successors, (230), 4 states have internal predecessors, (230), 4 states have call successors, (60), 3 states have call predecessors, (60), 3 states have return successors, (56), 4 states have call predecessors, (56), 4 states have call successors, (56) Word has length 432 [2021-11-13 02:35:22,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:35:22,455 INFO L225 Difference]: With dead ends: 176872 [2021-11-13 02:35:22,456 INFO L226 Difference]: Without dead ends: 80520 [2021-11-13 02:35:22,990 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 862 GetRequests, 860 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:35:22,991 INFO L933 BasicCegarLoop]: 3739 mSDtfsCounter, 3553 mSDsluCounter, 2967 mSDsCounter, 0 mSdLazyCounter, 939 mSolverCounterSat, 32 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5469.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3553 SdHoareTripleChecker+Valid, 6706 SdHoareTripleChecker+Invalid, 972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.25ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 939 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5920.46ms IncrementalHoareTripleChecker+Time [2021-11-13 02:35:22,991 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3553 Valid, 6706 Invalid, 972 Unknown, 0 Unchecked, 20.25ms Time], IncrementalHoareTripleChecker [32 Valid, 939 Invalid, 1 Unknown, 0 Unchecked, 5920.46ms Time] [2021-11-13 02:35:23,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80520 states. [2021-11-13 02:35:28,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80520 to 80498. [2021-11-13 02:35:28,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80498 states, 56436 states have (on average 1.2605960734283082) internal successors, (71143), 57357 states have internal predecessors, (71143), 18447 states have call successors, (18447), 5626 states have call predecessors, (18447), 5614 states have return successors, (18474), 18268 states have call predecessors, (18474), 18447 states have call successors, (18474) [2021-11-13 02:35:28,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80498 states to 80498 states and 108064 transitions. [2021-11-13 02:35:28,629 INFO L78 Accepts]: Start accepts. Automaton has 80498 states and 108064 transitions. Word has length 432 [2021-11-13 02:35:28,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:35:28,630 INFO L470 AbstractCegarLoop]: Abstraction has 80498 states and 108064 transitions. [2021-11-13 02:35:28,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.5) internal successors, (230), 4 states have internal predecessors, (230), 4 states have call successors, (60), 3 states have call predecessors, (60), 3 states have return successors, (56), 4 states have call predecessors, (56), 4 states have call successors, (56) [2021-11-13 02:35:28,631 INFO L276 IsEmpty]: Start isEmpty. Operand 80498 states and 108064 transitions. [2021-11-13 02:35:28,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2021-11-13 02:35:28,652 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:35:28,652 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 14, 14, 14, 10, 10, 10, 10, 10, 10, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:35:28,729 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f36d74b-57c8-4633-9c69-71b6a50962ed/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-13 02:35:28,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f36d74b-57c8-4633-9c69-71b6a50962ed/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:35:28,867 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:35:28,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:35:28,867 INFO L85 PathProgramCache]: Analyzing trace with hash 844076042, now seen corresponding path program 1 times [2021-11-13 02:35:28,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:35:28,874 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1299184543] [2021-11-13 02:35:28,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:35:28,875 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:35:28,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f36d74b-57c8-4633-9c69-71b6a50962ed/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:35:28,877 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f36d74b-57c8-4633-9c69-71b6a50962ed/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:35:28,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f36d74b-57c8-4633-9c69-71b6a50962ed/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-13 02:35:35,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:35:35,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 2867 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 02:35:35,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:35:37,261 INFO L134 CoverageAnalysis]: Checked inductivity of 1212 backedges. 384 proven. 0 refuted. 0 times theorem prover too weak. 828 trivial. 0 not checked. [2021-11-13 02:35:37,261 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:35:38,588 INFO L134 CoverageAnalysis]: Checked inductivity of 1212 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1212 trivial. 0 not checked. [2021-11-13 02:35:38,589 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:35:38,589 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1299184543] [2021-11-13 02:35:38,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1299184543] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:35:38,589 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:35:38,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-13 02:35:38,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080515267] [2021-11-13 02:35:38,590 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:35:38,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 02:35:38,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:35:38,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 02:35:38,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:35:38,593 INFO L87 Difference]: Start difference. First operand 80498 states and 108064 transitions. Second operand has 8 states, 8 states have (on average 28.0) internal successors, (224), 8 states have internal predecessors, (224), 2 states have call successors, (74), 2 states have call predecessors, (74), 2 states have return successors, (70), 2 states have call predecessors, (70), 2 states have call successors, (70)