./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-tehuti-tehuti.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_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/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_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/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-tehuti-tehuti.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/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_4c0ef70c-b273-4b68-b82d-59b9354972e2/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 36bb93ca3621bc77a2fce568a30c9f1e07b847a50c59f68bc973979594911c40 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 01:32:19,774 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 01:32:19,778 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 01:32:19,845 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 01:32:19,846 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 01:32:19,851 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 01:32:19,854 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 01:32:19,858 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 01:32:19,861 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 01:32:19,864 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 01:32:19,865 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 01:32:19,867 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 01:32:19,868 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 01:32:19,869 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 01:32:19,871 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 01:32:19,873 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 01:32:19,874 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 01:32:19,875 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 01:32:19,878 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 01:32:19,881 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 01:32:19,883 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 01:32:19,884 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 01:32:19,886 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 01:32:19,887 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 01:32:19,891 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 01:32:19,892 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 01:32:19,892 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 01:32:19,894 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 01:32:19,894 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 01:32:19,896 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 01:32:19,896 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 01:32:19,897 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 01:32:19,899 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 01:32:19,900 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 01:32:19,901 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 01:32:19,901 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 01:32:19,902 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 01:32:19,902 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 01:32:19,903 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 01:32:19,904 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 01:32:19,905 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 01:32:19,906 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-13 01:32:19,953 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 01:32:19,953 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 01:32:19,955 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 01:32:19,955 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 01:32:19,955 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 01:32:19,956 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 01:32:19,956 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 01:32:19,956 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-13 01:32:19,956 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 01:32:19,957 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 01:32:19,958 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-13 01:32:19,958 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-13 01:32:19,958 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 01:32:19,959 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-13 01:32:19,959 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-13 01:32:19,959 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-13 01:32:19,960 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 01:32:19,960 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 01:32:19,960 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 01:32:19,961 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 01:32:19,961 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 01:32:19,961 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 01:32:19,961 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 01:32:19,961 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 01:32:19,962 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 01:32:19,962 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 01:32:19,962 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 01:32:19,962 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 01:32:19,963 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:32:19,965 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 01:32:19,965 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 01:32:19,965 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 01:32:19,966 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-13 01:32:19,966 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 01:32:19,966 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 01:32:19,966 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 01:32:19,966 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 01:32:19,967 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_4c0ef70c-b273-4b68-b82d-59b9354972e2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 36bb93ca3621bc77a2fce568a30c9f1e07b847a50c59f68bc973979594911c40 [2021-11-13 01:32:20,355 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 01:32:20,392 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 01:32:20,395 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 01:32:20,396 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 01:32:20,397 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 01:32:20,398 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-tehuti-tehuti.cil.i [2021-11-13 01:32:20,495 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/data/36ad4cb1e/e9a1db67137342f78d39d020c70c6cd1/FLAGcb9e59cdc [2021-11-13 01:32:21,729 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 01:32:21,731 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-tehuti-tehuti.cil.i [2021-11-13 01:32:21,808 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/data/36ad4cb1e/e9a1db67137342f78d39d020c70c6cd1/FLAGcb9e59cdc [2021-11-13 01:32:21,988 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/data/36ad4cb1e/e9a1db67137342f78d39d020c70c6cd1 [2021-11-13 01:32:21,990 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 01:32:21,993 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 01:32:21,995 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 01:32:21,996 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 01:32:22,000 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 01:32:22,001 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:32:21" (1/1) ... [2021-11-13 01:32:22,002 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40cf56ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:32:22, skipping insertion in model container [2021-11-13 01:32:22,003 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:32:21" (1/1) ... [2021-11-13 01:32:22,012 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 01:32:22,205 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 01:32:24,509 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 01:32:24,686 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 01:32:24,694 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 01:32:24,778 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 01:32:26,207 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_4c0ef70c-b273-4b68-b82d-59b9354972e2/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-tehuti-tehuti.cil.i[376704,376717] [2021-11-13 01:32:26,209 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_4c0ef70c-b273-4b68-b82d-59b9354972e2/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-tehuti-tehuti.cil.i[376849,376862] [2021-11-13 01:32:26,244 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:32:26,374 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 01:32:26,375 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6b0ba952 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:32:26, skipping insertion in model container [2021-11-13 01:32:26,375 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 01:32:26,375 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-13 01:32:26,378 INFO L158 Benchmark]: Toolchain (without parser) took 4383.26ms. Allocated memory was 127.9MB in the beginning and 172.0MB in the end (delta: 44.0MB). Free memory was 73.1MB in the beginning and 118.8MB in the end (delta: -45.7MB). Peak memory consumption was 67.9MB. Max. memory is 16.1GB. [2021-11-13 01:32:26,379 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 127.9MB. Free memory was 106.4MB in the beginning and 106.3MB in the end (delta: 73.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 01:32:26,381 INFO L158 Benchmark]: CACSL2BoogieTranslator took 4379.77ms. Allocated memory was 127.9MB in the beginning and 172.0MB in the end (delta: 44.0MB). Free memory was 72.9MB in the beginning and 118.8MB in the end (delta: -45.9MB). Peak memory consumption was 67.9MB. Max. memory is 16.1GB. [2021-11-13 01:32:26,383 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 127.9MB. Free memory was 106.4MB in the beginning and 106.3MB in the end (delta: 73.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 4379.77ms. Allocated memory was 127.9MB in the beginning and 172.0MB in the end (delta: 44.0MB). Free memory was 72.9MB in the beginning and 118.8MB in the end (delta: -45.9MB). Peak memory consumption was 67.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 7356]: 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_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/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_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/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-tehuti-tehuti.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/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_4c0ef70c-b273-4b68-b82d-59b9354972e2/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 36bb93ca3621bc77a2fce568a30c9f1e07b847a50c59f68bc973979594911c40 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 01:32:29,032 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 01:32:29,035 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 01:32:29,071 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 01:32:29,072 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 01:32:29,074 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 01:32:29,076 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 01:32:29,078 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 01:32:29,080 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 01:32:29,082 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 01:32:29,083 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 01:32:29,085 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 01:32:29,085 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 01:32:29,087 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 01:32:29,089 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 01:32:29,093 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 01:32:29,095 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 01:32:29,097 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 01:32:29,102 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 01:32:29,108 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 01:32:29,113 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 01:32:29,115 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 01:32:29,117 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 01:32:29,118 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 01:32:29,123 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 01:32:29,123 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 01:32:29,124 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 01:32:29,125 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 01:32:29,125 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 01:32:29,127 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 01:32:29,127 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 01:32:29,128 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 01:32:29,129 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 01:32:29,130 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 01:32:29,132 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 01:32:29,132 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 01:32:29,133 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 01:32:29,134 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 01:32:29,134 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 01:32:29,135 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 01:32:29,136 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 01:32:29,137 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-13 01:32:29,192 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 01:32:29,192 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 01:32:29,194 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 01:32:29,194 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 01:32:29,195 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 01:32:29,195 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 01:32:29,195 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 01:32:29,195 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 01:32:29,196 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 01:32:29,197 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 01:32:29,199 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 01:32:29,200 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 01:32:29,200 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 01:32:29,200 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 01:32:29,200 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 01:32:29,201 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 01:32:29,201 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 01:32:29,201 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 01:32:29,201 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 01:32:29,201 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 01:32:29,202 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 01:32:29,202 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 01:32:29,202 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 01:32:29,202 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 01:32:29,203 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:32:29,203 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 01:32:29,203 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 01:32:29,203 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 01:32:29,204 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-13 01:32:29,204 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 01:32:29,204 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 01:32:29,204 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 01:32:29,204 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 01:32:29,205 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_4c0ef70c-b273-4b68-b82d-59b9354972e2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 36bb93ca3621bc77a2fce568a30c9f1e07b847a50c59f68bc973979594911c40 [2021-11-13 01:32:29,615 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 01:32:29,640 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 01:32:29,643 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 01:32:29,644 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 01:32:29,645 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 01:32:29,647 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-tehuti-tehuti.cil.i [2021-11-13 01:32:29,726 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/data/4995c90e1/7db0747f55b244ac9b8264009b12a790/FLAG41d3d21dd [2021-11-13 01:32:31,110 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 01:32:31,111 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-tehuti-tehuti.cil.i [2021-11-13 01:32:31,193 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/data/4995c90e1/7db0747f55b244ac9b8264009b12a790/FLAG41d3d21dd [2021-11-13 01:32:31,315 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/data/4995c90e1/7db0747f55b244ac9b8264009b12a790 [2021-11-13 01:32:31,318 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 01:32:31,320 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 01:32:31,321 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 01:32:31,322 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 01:32:31,326 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 01:32:31,326 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:32:31" (1/1) ... [2021-11-13 01:32:31,328 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35cd8d88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:32:31, skipping insertion in model container [2021-11-13 01:32:31,328 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:32:31" (1/1) ... [2021-11-13 01:32:31,337 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 01:32:31,584 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 01:32:35,779 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_4c0ef70c-b273-4b68-b82d-59b9354972e2/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-tehuti-tehuti.cil.i[376704,376717] [2021-11-13 01:32:35,784 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_4c0ef70c-b273-4b68-b82d-59b9354972e2/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-tehuti-tehuti.cil.i[376849,376862] [2021-11-13 01:32:35,826 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:32:35,951 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-13 01:32:36,063 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 01:32:36,636 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_4c0ef70c-b273-4b68-b82d-59b9354972e2/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-tehuti-tehuti.cil.i[376704,376717] [2021-11-13 01:32:36,637 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_4c0ef70c-b273-4b68-b82d-59b9354972e2/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-tehuti-tehuti.cil.i[376849,376862] [2021-11-13 01:32:36,645 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:32:36,694 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 01:32:37,309 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_4c0ef70c-b273-4b68-b82d-59b9354972e2/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-tehuti-tehuti.cil.i[376704,376717] [2021-11-13 01:32:37,310 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_4c0ef70c-b273-4b68-b82d-59b9354972e2/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-tehuti-tehuti.cil.i[376849,376862] [2021-11-13 01:32:37,317 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:32:37,577 INFO L208 MainTranslator]: Completed translation [2021-11-13 01:32:37,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:32:37 WrapperNode [2021-11-13 01:32:37,578 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 01:32:37,579 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 01:32:37,580 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 01:32:37,580 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 01:32:37,588 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:32:37" (1/1) ... [2021-11-13 01:32:37,735 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:32:37" (1/1) ... [2021-11-13 01:32:37,990 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 01:32:37,991 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 01:32:37,992 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 01:32:37,992 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 01:32:38,002 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:32:37" (1/1) ... [2021-11-13 01:32:38,003 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:32:37" (1/1) ... [2021-11-13 01:32:38,072 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:32:37" (1/1) ... [2021-11-13 01:32:38,072 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:32:37" (1/1) ... [2021-11-13 01:32:38,304 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:32:37" (1/1) ... [2021-11-13 01:32:38,357 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:32:37" (1/1) ... [2021-11-13 01:32:38,418 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:32:37" (1/1) ... [2021-11-13 01:32:38,447 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 01:32:38,449 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 01:32:38,449 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 01:32:38,449 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 01:32:38,450 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:32:37" (1/1) ... [2021-11-13 01:32:38,458 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:32:38,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 01:32:38,487 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 01:32:38,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 01:32:38,545 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-13 01:32:38,545 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-13 01:32:38,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-13 01:32:38,546 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-13 01:32:38,546 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2021-11-13 01:32:38,546 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2021-11-13 01:32:38,546 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_page [2021-11-13 01:32:38,547 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_page [2021-11-13 01:32:38,547 INFO L130 BoogieDeclarations]: Found specification of procedure bdx_open [2021-11-13 01:32:38,547 INFO L138 BoogieDeclarations]: Found implementation of procedure bdx_open [2021-11-13 01:32:38,547 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-13 01:32:38,547 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-13 01:32:38,548 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-13 01:32:38,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-13 01:32:38,548 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_word [2021-11-13 01:32:38,548 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_word [2021-11-13 01:32:38,548 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_restore [2021-11-13 01:32:38,549 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_restore [2021-11-13 01:32:38,549 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2021-11-13 01:32:38,549 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2021-11-13 01:32:38,549 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-13 01:32:38,550 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-13 01:32:38,550 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-13 01:32:38,551 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-13 01:32:38,551 INFO L130 BoogieDeclarations]: Found specification of procedure bdx_tx_db_inc_wptr [2021-11-13 01:32:38,551 INFO L138 BoogieDeclarations]: Found implementation of procedure bdx_tx_db_inc_wptr [2021-11-13 01:32:38,551 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~C_INT~structend~~TO~C_INT [2021-11-13 01:32:38,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~C_INT~structend~~TO~C_INT [2021-11-13 01:32:38,552 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-13 01:32:38,552 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-13 01:32:38,552 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-13 01:32:38,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-13 01:32:38,552 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-11-13 01:32:38,553 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-11-13 01:32:38,553 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-13 01:32:38,553 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-13 01:32:38,554 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-13 01:32:38,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-13 01:32:38,554 INFO L130 BoogieDeclarations]: Found specification of procedure arch_irqs_disabled_flags [2021-11-13 01:32:38,554 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_irqs_disabled_flags [2021-11-13 01:32:38,555 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-13 01:32:38,555 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-13 01:32:38,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 01:32:38,555 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2021-11-13 01:32:38,555 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2021-11-13 01:32:38,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-13 01:32:38,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-13 01:32:38,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-13 01:32:38,557 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-13 01:32:38,558 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-13 01:32:38,558 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_consistent_dma_mask [2021-11-13 01:32:38,559 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_consistent_dma_mask [2021-11-13 01:32:38,560 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-11-13 01:32:38,560 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-11-13 01:32:38,560 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-13 01:32:38,560 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-13 01:32:38,561 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-13 01:32:38,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-13 01:32:38,561 INFO L130 BoogieDeclarations]: Found specification of procedure __bdx_tx_db_ptr_next [2021-11-13 01:32:38,562 INFO L138 BoogieDeclarations]: Found implementation of procedure __bdx_tx_db_ptr_next [2021-11-13 01:32:38,563 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~C_ULONG~X~C_ULONG~X~C_INT~X~$Pointer$~TO~~dma_addr_t~0 [2021-11-13 01:32:38,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~C_ULONG~X~C_ULONG~X~C_INT~X~$Pointer$~TO~~dma_addr_t~0 [2021-11-13 01:32:38,563 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-13 01:32:38,563 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-13 01:32:38,563 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-13 01:32:38,563 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-13 01:32:38,564 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-13 01:32:38,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-13 01:32:38,564 INFO L130 BoogieDeclarations]: Found specification of procedure bdx_close [2021-11-13 01:32:38,564 INFO L138 BoogieDeclarations]: Found implementation of procedure bdx_close [2021-11-13 01:32:38,564 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-13 01:32:38,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-13 01:32:38,565 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-11-13 01:32:38,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-11-13 01:32:38,565 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_tx_lock_of_bdx_priv [2021-11-13 01:32:38,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_tx_lock_of_bdx_priv [2021-11-13 01:32:38,566 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_dma_mask [2021-11-13 01:32:38,566 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_dma_mask [2021-11-13 01:32:38,566 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2021-11-13 01:32:38,566 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2021-11-13 01:32:38,566 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-13 01:32:38,566 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-13 01:32:38,567 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 01:32:38,568 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-13 01:32:38,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-13 01:32:38,568 INFO L130 BoogieDeclarations]: Found specification of procedure bdx_restore_mac [2021-11-13 01:32:38,568 INFO L138 BoogieDeclarations]: Found implementation of procedure bdx_restore_mac [2021-11-13 01:32:38,568 INFO L130 BoogieDeclarations]: Found specification of procedure bdx_rx_alloc_skbs [2021-11-13 01:32:38,569 INFO L138 BoogieDeclarations]: Found implementation of procedure bdx_rx_alloc_skbs [2021-11-13 01:32:38,569 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-13 01:32:38,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-13 01:32:38,570 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-13 01:32:38,570 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-13 01:32:38,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 01:32:38,570 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-13 01:32:38,570 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-13 01:32:38,571 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-13 01:32:38,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-13 01:32:38,571 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-13 01:32:38,571 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2021-11-13 01:32:38,571 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2021-11-13 01:32:38,572 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_exclusive_spin_is_locked [2021-11-13 01:32:38,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_exclusive_spin_is_locked [2021-11-13 01:32:38,572 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert [2021-11-13 01:32:38,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert [2021-11-13 01:32:38,573 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~C_ULONG~X~C_INT~X~$Pointer$~TO~VOID [2021-11-13 01:32:38,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~C_ULONG~X~C_INT~X~$Pointer$~TO~VOID [2021-11-13 01:32:38,573 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_map_page [2021-11-13 01:32:38,574 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_map_page [2021-11-13 01:32:38,574 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-13 01:32:38,575 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-13 01:32:38,578 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-13 01:32:38,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-13 01:32:38,579 INFO L130 BoogieDeclarations]: Found specification of procedure bdx_rxdb_available [2021-11-13 01:32:38,579 INFO L138 BoogieDeclarations]: Found implementation of procedure bdx_rxdb_available [2021-11-13 01:32:38,580 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_size [2021-11-13 01:32:38,581 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_size [2021-11-13 01:32:38,581 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2021-11-13 01:32:38,582 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2021-11-13 01:32:38,582 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-13 01:32:38,588 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-13 01:32:38,588 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-13 01:32:38,589 INFO L130 BoogieDeclarations]: Found specification of procedure bdx_rxdb_addr_elem [2021-11-13 01:32:38,589 INFO L138 BoogieDeclarations]: Found implementation of procedure bdx_rxdb_addr_elem [2021-11-13 01:32:38,589 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_save_flags [2021-11-13 01:32:38,589 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_save_flags [2021-11-13 01:32:38,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 01:32:38,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 01:32:38,590 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-13 01:32:38,590 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-13 01:32:38,590 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-13 01:32:38,590 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-13 01:32:38,590 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-13 01:32:38,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-13 01:32:38,591 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-13 01:32:38,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-13 01:32:38,591 INFO L130 BoogieDeclarations]: Found specification of procedure bdx_tx_db_inc_rptr [2021-11-13 01:32:38,591 INFO L138 BoogieDeclarations]: Found implementation of procedure bdx_tx_db_inc_rptr [2021-11-13 01:32:38,591 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-13 01:32:38,591 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-13 01:32:38,592 INFO L130 BoogieDeclarations]: Found specification of procedure __bdx_vlan_rx_vid [2021-11-13 01:32:38,592 INFO L138 BoogieDeclarations]: Found implementation of procedure __bdx_vlan_rx_vid [2021-11-13 01:32:38,592 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2021-11-13 01:32:38,592 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2021-11-13 01:32:38,592 INFO L130 BoogieDeclarations]: Found specification of procedure bdx_fifo_free [2021-11-13 01:32:38,592 INFO L138 BoogieDeclarations]: Found implementation of procedure bdx_fifo_free [2021-11-13 01:32:38,593 INFO L130 BoogieDeclarations]: Found specification of procedure bdx_remove [2021-11-13 01:32:38,593 INFO L138 BoogieDeclarations]: Found implementation of procedure bdx_remove [2021-11-13 01:32:38,594 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-13 01:32:38,594 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-13 01:32:38,594 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-13 01:32:38,594 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-13 01:32:38,594 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_unmap_page [2021-11-13 01:32:38,595 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_unmap_page [2021-11-13 01:32:38,595 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-13 01:32:38,595 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-13 01:32:38,595 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 01:32:38,595 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_off [2021-11-13 01:32:38,595 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_off [2021-11-13 01:32:38,596 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-13 01:32:38,596 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-13 01:32:38,596 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 01:32:38,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-13 01:32:38,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-13 01:32:38,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-13 01:32:38,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-13 01:32:38,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-13 01:32:38,597 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-11-13 01:32:38,597 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-11-13 01:32:38,597 INFO L130 BoogieDeclarations]: Found specification of procedure bdx_reset [2021-11-13 01:32:38,597 INFO L138 BoogieDeclarations]: Found implementation of procedure bdx_reset [2021-11-13 01:32:38,597 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-13 01:32:38,598 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-13 01:32:38,598 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-13 01:32:38,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-13 01:32:38,598 INFO L130 BoogieDeclarations]: Found specification of procedure bdx_rxdb_alloc_elem [2021-11-13 01:32:38,598 INFO L138 BoogieDeclarations]: Found implementation of procedure bdx_rxdb_alloc_elem [2021-11-13 01:32:38,598 INFO L130 BoogieDeclarations]: Found specification of procedure bdx_range_check [2021-11-13 01:32:38,599 INFO L138 BoogieDeclarations]: Found implementation of procedure bdx_range_check [2021-11-13 01:32:38,600 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2021-11-13 01:32:38,600 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2021-11-13 01:32:38,600 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_nonatomic [2021-11-13 01:32:38,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_nonatomic [2021-11-13 01:32:38,600 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-13 01:32:38,602 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-13 01:32:38,602 INFO L130 BoogieDeclarations]: Found specification of procedure bdx_fifo_init [2021-11-13 01:32:38,603 INFO L138 BoogieDeclarations]: Found implementation of procedure bdx_fifo_init [2021-11-13 01:32:38,603 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~C_INT [2021-11-13 01:32:38,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~C_INT [2021-11-13 01:32:38,603 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-13 01:32:38,603 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-13 01:32:38,603 INFO L130 BoogieDeclarations]: Found specification of procedure bdx_link_changed [2021-11-13 01:32:38,604 INFO L138 BoogieDeclarations]: Found implementation of procedure bdx_link_changed [2021-11-13 01:32:38,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-13 01:32:38,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-13 01:32:38,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-13 01:32:38,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-13 01:32:38,604 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-13 01:32:38,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-13 01:32:38,605 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-13 01:32:38,605 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-13 01:32:38,605 INFO L130 BoogieDeclarations]: Found specification of procedure bdx_setmulti [2021-11-13 01:32:38,605 INFO L138 BoogieDeclarations]: Found implementation of procedure bdx_setmulti [2021-11-13 01:32:38,605 INFO L130 BoogieDeclarations]: Found specification of procedure print_rxfd [2021-11-13 01:32:38,606 INFO L138 BoogieDeclarations]: Found implementation of procedure print_rxfd [2021-11-13 01:32:38,606 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-13 01:32:38,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-13 01:32:38,606 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-11-13 01:32:38,606 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-11-13 01:32:38,606 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-13 01:32:38,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-13 01:32:39,900 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-13 01:40:44,203 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-13 01:40:44,363 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 01:40:44,363 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-13 01:40:44,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:40:44 BoogieIcfgContainer [2021-11-13 01:40:44,369 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 01:40:44,372 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 01:40:44,372 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 01:40:44,375 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 01:40:44,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 01:32:31" (1/3) ... [2021-11-13 01:40:44,377 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d2f37e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:40:44, skipping insertion in model container [2021-11-13 01:40:44,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:32:37" (2/3) ... [2021-11-13 01:40:44,377 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d2f37e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:40:44, skipping insertion in model container [2021-11-13 01:40:44,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:40:44" (3/3) ... [2021-11-13 01:40:44,379 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-tehuti-tehuti.cil.i [2021-11-13 01:40:44,386 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 01:40:44,386 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-13 01:40:44,461 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 01:40:44,469 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 01:40:44,469 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-13 01:40:44,535 INFO L276 IsEmpty]: Start isEmpty. Operand has 1632 states, 1121 states have (on average 1.2595896520963425) internal successors, (1412), 1144 states have internal predecessors, (1412), 420 states have call successors, (420), 91 states have call predecessors, (420), 90 states have return successors, (415), 412 states have call predecessors, (415), 415 states have call successors, (415) [2021-11-13 01:40:44,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-13 01:40:44,562 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:40:44,564 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:40:44,565 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:40:44,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:40:44,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1901402859, now seen corresponding path program 1 times [2021-11-13 01:40:44,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:40:44,596 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [847483037] [2021-11-13 01:40:44,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:40:44,598 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:40:44,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:40:44,602 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:40:44,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 01:40:49,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:40:49,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 1818 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 01:40:49,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:40:49,882 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-11-13 01:40:49,882 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:40:50,437 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-13 01:40:50,438 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:40:50,438 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [847483037] [2021-11-13 01:40:50,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [847483037] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:40:50,440 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:40:50,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 01:40:50,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270472949] [2021-11-13 01:40:50,443 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:40:50,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 01:40:50,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:40:50,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 01:40:50,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:40:50,489 INFO L87 Difference]: Start difference. First operand has 1632 states, 1121 states have (on average 1.2595896520963425) internal successors, (1412), 1144 states have internal predecessors, (1412), 420 states have call successors, (420), 91 states have call predecessors, (420), 90 states have return successors, (415), 412 states have call predecessors, (415), 415 states have call successors, (415) Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 4 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2021-11-13 01:40:53,176 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.67s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:40:59,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:40:59,602 INFO L93 Difference]: Finished difference Result 5760 states and 8043 transitions. [2021-11-13 01:40:59,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 01:40:59,606 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 4 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 100 [2021-11-13 01:40:59,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:40:59,692 INFO L225 Difference]: With dead ends: 5760 [2021-11-13 01:40:59,692 INFO L226 Difference]: Without dead ends: 4048 [2021-11-13 01:40:59,722 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 196 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 01:40:59,731 INFO L933 BasicCegarLoop]: 3087 mSDtfsCounter, 3548 mSDsluCounter, 3801 mSDsCounter, 0 mSdLazyCounter, 817 mSolverCounterSat, 50 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7913.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3548 SdHoareTripleChecker+Valid, 6888 SdHoareTripleChecker+Invalid, 868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 62.48ms SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 817 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8558.00ms IncrementalHoareTripleChecker+Time [2021-11-13 01:40:59,736 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3548 Valid, 6888 Invalid, 868 Unknown, 0 Unchecked, 62.48ms Time], IncrementalHoareTripleChecker [50 Valid, 817 Invalid, 1 Unknown, 0 Unchecked, 8558.00ms Time] [2021-11-13 01:40:59,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4048 states. [2021-11-13 01:41:00,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4048 to 4038. [2021-11-13 01:41:00,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4038 states, 2824 states have (on average 1.2358356940509916) internal successors, (3490), 2875 states have internal predecessors, (3490), 975 states have call successors, (975), 237 states have call predecessors, (975), 237 states have return successors, (975), 968 states have call predecessors, (975), 975 states have call successors, (975) [2021-11-13 01:41:00,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4038 states to 4038 states and 5440 transitions. [2021-11-13 01:41:00,234 INFO L78 Accepts]: Start accepts. Automaton has 4038 states and 5440 transitions. Word has length 100 [2021-11-13 01:41:00,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:41:00,238 INFO L470 AbstractCegarLoop]: Abstraction has 4038 states and 5440 transitions. [2021-11-13 01:41:00,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 4 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2021-11-13 01:41:00,239 INFO L276 IsEmpty]: Start isEmpty. Operand 4038 states and 5440 transitions. [2021-11-13 01:41:00,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-13 01:41:00,251 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:41:00,252 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:41:00,325 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-13 01:41:00,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:41:00,465 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:41:00,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:41:00,466 INFO L85 PathProgramCache]: Analyzing trace with hash -286405705, now seen corresponding path program 1 times [2021-11-13 01:41:00,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:41:00,475 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1170130950] [2021-11-13 01:41:00,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:41:00,476 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:41:00,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:41:00,477 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:41:00,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-13 01:41:04,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:41:05,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 1888 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 01:41:05,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:41:05,598 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-11-13 01:41:05,599 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:41:06,101 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-13 01:41:06,101 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:41:06,101 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1170130950] [2021-11-13 01:41:06,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1170130950] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:41:06,102 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:41:06,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 01:41:06,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674246948] [2021-11-13 01:41:06,103 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:41:06,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 01:41:06,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:41:06,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 01:41:06,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:41:06,107 INFO L87 Difference]: Start difference. First operand 4038 states and 5440 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 4 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2021-11-13 01:41:08,586 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 01:41:16,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:41:16,691 INFO L93 Difference]: Finished difference Result 14364 states and 19317 transitions. [2021-11-13 01:41:16,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 01:41:16,693 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 4 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) Word has length 112 [2021-11-13 01:41:16,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:41:16,801 INFO L225 Difference]: With dead ends: 14364 [2021-11-13 01:41:16,802 INFO L226 Difference]: Without dead ends: 10341 [2021-11-13 01:41:16,830 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 220 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 01:41:16,834 INFO L933 BasicCegarLoop]: 2841 mSDtfsCounter, 5176 mSDsluCounter, 3099 mSDsCounter, 0 mSdLazyCounter, 696 mSolverCounterSat, 776 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8887.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5176 SdHoareTripleChecker+Valid, 5940 SdHoareTripleChecker+Invalid, 1473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 50.30ms SdHoareTripleChecker+Time, 776 IncrementalHoareTripleChecker+Valid, 696 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9813.94ms IncrementalHoareTripleChecker+Time [2021-11-13 01:41:16,838 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5176 Valid, 5940 Invalid, 1473 Unknown, 0 Unchecked, 50.30ms Time], IncrementalHoareTripleChecker [776 Valid, 696 Invalid, 1 Unknown, 0 Unchecked, 9813.94ms Time] [2021-11-13 01:41:16,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10341 states. [2021-11-13 01:41:17,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10341 to 10323. [2021-11-13 01:41:17,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10323 states, 7229 states have (on average 1.235717249965417) internal successors, (8933), 7369 states have internal predecessors, (8933), 2455 states have call successors, (2455), 642 states have call predecessors, (2455), 637 states have return successors, (2480), 2412 states have call predecessors, (2480), 2455 states have call successors, (2480) [2021-11-13 01:41:17,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10323 states to 10323 states and 13868 transitions. [2021-11-13 01:41:17,766 INFO L78 Accepts]: Start accepts. Automaton has 10323 states and 13868 transitions. Word has length 112 [2021-11-13 01:41:17,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:41:17,770 INFO L470 AbstractCegarLoop]: Abstraction has 10323 states and 13868 transitions. [2021-11-13 01:41:17,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 4 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2021-11-13 01:41:17,770 INFO L276 IsEmpty]: Start isEmpty. Operand 10323 states and 13868 transitions. [2021-11-13 01:41:17,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-11-13 01:41:17,790 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:41:17,790 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 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] [2021-11-13 01:41:17,857 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-13 01:41:18,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:41:18,005 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:41:18,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:41:18,006 INFO L85 PathProgramCache]: Analyzing trace with hash 417928234, now seen corresponding path program 1 times [2021-11-13 01:41:18,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:41:18,010 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [247502439] [2021-11-13 01:41:18,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:41:18,011 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:41:18,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:41:18,013 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:41:18,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-13 01:41:21,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:41:22,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 1987 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 01:41:22,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:41:23,039 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2021-11-13 01:41:23,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:41:23,733 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2021-11-13 01:41:23,733 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:41:23,734 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [247502439] [2021-11-13 01:41:23,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [247502439] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:41:23,734 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:41:23,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 01:41:23,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943355641] [2021-11-13 01:41:23,735 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:41:23,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 01:41:23,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:41:23,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 01:41:23,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:41:23,737 INFO L87 Difference]: Start difference. First operand 10323 states and 13868 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-13 01:41:24,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:41:24,440 INFO L93 Difference]: Finished difference Result 20676 states and 27788 transitions. [2021-11-13 01:41:24,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 01:41:24,441 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 181 [2021-11-13 01:41:24,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:41:24,545 INFO L225 Difference]: With dead ends: 20676 [2021-11-13 01:41:24,545 INFO L226 Difference]: Without dead ends: 10368 [2021-11-13 01:41:24,603 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 358 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 01:41:24,607 INFO L933 BasicCegarLoop]: 2144 mSDtfsCounter, 12 mSDsluCounter, 2142 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 209.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 4286 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.37ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 231.53ms IncrementalHoareTripleChecker+Time [2021-11-13 01:41:24,609 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 4286 Invalid, 10 Unknown, 0 Unchecked, 13.37ms Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 231.53ms Time] [2021-11-13 01:41:24,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10368 states. [2021-11-13 01:41:25,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10368 to 10368. [2021-11-13 01:41:25,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10368 states, 7274 states have (on average 1.235496288149574) internal successors, (8987), 7414 states have internal predecessors, (8987), 2455 states have call successors, (2455), 642 states have call predecessors, (2455), 637 states have return successors, (2480), 2412 states have call predecessors, (2480), 2455 states have call successors, (2480) [2021-11-13 01:41:25,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10368 states to 10368 states and 13922 transitions. [2021-11-13 01:41:25,404 INFO L78 Accepts]: Start accepts. Automaton has 10368 states and 13922 transitions. Word has length 181 [2021-11-13 01:41:25,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:41:25,405 INFO L470 AbstractCegarLoop]: Abstraction has 10368 states and 13922 transitions. [2021-11-13 01:41:25,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-13 01:41:25,406 INFO L276 IsEmpty]: Start isEmpty. Operand 10368 states and 13922 transitions. [2021-11-13 01:41:25,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-11-13 01:41:25,416 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:41:25,417 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 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] [2021-11-13 01:41:25,482 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-13 01:41:25,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:41:25,633 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:41:25,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:41:25,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1208797448, now seen corresponding path program 1 times [2021-11-13 01:41:25,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:41:25,638 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1544688249] [2021-11-13 01:41:25,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:41:25,639 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:41:25,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:41:25,640 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:41:25,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-13 01:41:29,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:41:29,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 2007 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 01:41:29,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:41:30,738 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 115 proven. 3 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2021-11-13 01:41:30,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:41:31,549 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2021-11-13 01:41:31,549 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:41:31,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1544688249] [2021-11-13 01:41:31,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1544688249] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:41:31,550 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2098753342] [2021-11-13 01:41:31,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:41:31,550 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:41:31,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:41:31,557 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:41:31,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2021-11-13 01:41:33,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:41:33,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 2007 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 01:41:33,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:41:35,570 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2021-11-13 01:41:35,570 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:41:36,879 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2021-11-13 01:41:36,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2098753342] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:41:36,880 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-13 01:41:36,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [5, 5] total 11 [2021-11-13 01:41:36,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282377712] [2021-11-13 01:41:36,881 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:41:36,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:41:36,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:41:36,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:41:36,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-13 01:41:36,883 INFO L87 Difference]: Start difference. First operand 10368 states and 13922 transitions. Second operand has 5 states, 5 states have (on average 32.6) internal successors, (163), 5 states have internal predecessors, (163), 3 states have call successors, (36), 3 states have call predecessors, (36), 4 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) [2021-11-13 01:41:39,318 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 01:41:45,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:41:45,629 INFO L93 Difference]: Finished difference Result 20721 states and 27916 transitions. [2021-11-13 01:41:45,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:41:45,630 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.6) internal successors, (163), 5 states have internal predecessors, (163), 3 states have call successors, (36), 3 states have call predecessors, (36), 4 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) Word has length 189 [2021-11-13 01:41:45,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:41:45,720 INFO L225 Difference]: With dead ends: 20721 [2021-11-13 01:41:45,721 INFO L226 Difference]: Without dead ends: 10368 [2021-11-13 01:41:45,785 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 752 GetRequests, 743 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-13 01:41:45,786 INFO L933 BasicCegarLoop]: 2145 mSDtfsCounter, 2046 mSDsluCounter, 1358 mSDsCounter, 0 mSdLazyCounter, 788 mSolverCounterSat, 19 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7544.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2046 SdHoareTripleChecker+Valid, 3503 SdHoareTripleChecker+Invalid, 808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.42ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 788 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8148.46ms IncrementalHoareTripleChecker+Time [2021-11-13 01:41:45,787 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2046 Valid, 3503 Invalid, 808 Unknown, 0 Unchecked, 21.42ms Time], IncrementalHoareTripleChecker [19 Valid, 788 Invalid, 1 Unknown, 0 Unchecked, 8148.46ms Time] [2021-11-13 01:41:45,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10368 states. [2021-11-13 01:41:46,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10368 to 10368. [2021-11-13 01:41:46,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10368 states, 7274 states have (on average 1.2343964806158922) internal successors, (8979), 7414 states have internal predecessors, (8979), 2455 states have call successors, (2455), 642 states have call predecessors, (2455), 637 states have return successors, (2480), 2412 states have call predecessors, (2480), 2455 states have call successors, (2480) [2021-11-13 01:41:46,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10368 states to 10368 states and 13914 transitions. [2021-11-13 01:41:46,486 INFO L78 Accepts]: Start accepts. Automaton has 10368 states and 13914 transitions. Word has length 189 [2021-11-13 01:41:46,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:41:46,488 INFO L470 AbstractCegarLoop]: Abstraction has 10368 states and 13914 transitions. [2021-11-13 01:41:46,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.6) internal successors, (163), 5 states have internal predecessors, (163), 3 states have call successors, (36), 3 states have call predecessors, (36), 4 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) [2021-11-13 01:41:46,488 INFO L276 IsEmpty]: Start isEmpty. Operand 10368 states and 13914 transitions. [2021-11-13 01:41:46,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-11-13 01:41:46,499 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:41:46,499 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 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] [2021-11-13 01:41:46,554 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-13 01:41:46,733 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2021-11-13 01:41:46,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-13 01:41:46,914 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:41:46,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:41:46,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1018738771, now seen corresponding path program 1 times [2021-11-13 01:41:46,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:41:46,918 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1037619417] [2021-11-13 01:41:46,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:41:46,918 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:41:46,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:41:46,919 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:41:46,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-13 01:41:50,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:41:51,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 2008 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 01:41:51,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:41:52,051 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 115 proven. 3 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2021-11-13 01:41:52,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:41:52,879 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2021-11-13 01:41:52,880 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:41:52,880 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1037619417] [2021-11-13 01:41:52,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1037619417] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:41:52,881 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1153010130] [2021-11-13 01:41:52,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:41:52,881 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:41:52,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:41:52,887 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:41:52,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-11-13 01:41:55,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:41:55,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 2008 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 01:41:55,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:41:57,321 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2021-11-13 01:41:57,321 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:41:58,602 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2021-11-13 01:41:58,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1153010130] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:41:58,603 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-13 01:41:58,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [5, 5] total 11 [2021-11-13 01:41:58,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202806633] [2021-11-13 01:41:58,603 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:41:58,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:41:58,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:41:58,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:41:58,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-13 01:41:58,606 INFO L87 Difference]: Start difference. First operand 10368 states and 13914 transitions. Second operand has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 3 states have call successors, (36), 3 states have call predecessors, (36), 4 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) [2021-11-13 01:42:01,044 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.44s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:42:06,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:42:06,459 INFO L93 Difference]: Finished difference Result 20721 states and 27900 transitions. [2021-11-13 01:42:06,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:42:06,460 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 3 states have call successors, (36), 3 states have call predecessors, (36), 4 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) Word has length 190 [2021-11-13 01:42:06,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:42:06,640 INFO L225 Difference]: With dead ends: 20721 [2021-11-13 01:42:06,640 INFO L226 Difference]: Without dead ends: 10368 [2021-11-13 01:42:06,673 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 756 GetRequests, 747 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-13 01:42:06,674 INFO L933 BasicCegarLoop]: 2144 mSDtfsCounter, 2045 mSDsluCounter, 1357 mSDsCounter, 0 mSdLazyCounter, 788 mSolverCounterSat, 19 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6835.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2045 SdHoareTripleChecker+Valid, 3501 SdHoareTripleChecker+Invalid, 808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.77ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 788 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7399.61ms IncrementalHoareTripleChecker+Time [2021-11-13 01:42:06,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2045 Valid, 3501 Invalid, 808 Unknown, 0 Unchecked, 15.77ms Time], IncrementalHoareTripleChecker [19 Valid, 788 Invalid, 1 Unknown, 0 Unchecked, 7399.61ms Time] [2021-11-13 01:42:06,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10368 states. [2021-11-13 01:42:07,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10368 to 10368. [2021-11-13 01:42:07,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10368 states, 7274 states have (on average 1.2332966730822106) internal successors, (8971), 7414 states have internal predecessors, (8971), 2455 states have call successors, (2455), 642 states have call predecessors, (2455), 637 states have return successors, (2480), 2412 states have call predecessors, (2480), 2455 states have call successors, (2480) [2021-11-13 01:42:07,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10368 states to 10368 states and 13906 transitions. [2021-11-13 01:42:07,364 INFO L78 Accepts]: Start accepts. Automaton has 10368 states and 13906 transitions. Word has length 190 [2021-11-13 01:42:07,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:42:07,366 INFO L470 AbstractCegarLoop]: Abstraction has 10368 states and 13906 transitions. [2021-11-13 01:42:07,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 3 states have call successors, (36), 3 states have call predecessors, (36), 4 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) [2021-11-13 01:42:07,367 INFO L276 IsEmpty]: Start isEmpty. Operand 10368 states and 13906 transitions. [2021-11-13 01:42:07,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-11-13 01:42:07,378 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:42:07,378 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 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] [2021-11-13 01:42:07,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2021-11-13 01:42:07,672 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-13 01:42:07,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:42:07,804 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:42:07,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:42:07,805 INFO L85 PathProgramCache]: Analyzing trace with hash 692629524, now seen corresponding path program 1 times [2021-11-13 01:42:07,810 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:42:07,810 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [187300492] [2021-11-13 01:42:07,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:42:07,811 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:42:07,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:42:07,813 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:42:07,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-13 01:42:11,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:42:12,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 2009 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 01:42:12,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:42:12,956 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 115 proven. 3 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2021-11-13 01:42:12,956 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:42:13,759 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2021-11-13 01:42:13,760 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:42:13,760 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [187300492] [2021-11-13 01:42:13,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [187300492] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:42:13,760 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2019779849] [2021-11-13 01:42:13,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:42:13,761 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:42:13,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:42:13,777 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:42:13,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-13 01:42:15,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:42:16,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 2009 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 01:42:16,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:42:17,862 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2021-11-13 01:42:17,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:42:19,279 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2021-11-13 01:42:19,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2019779849] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:42:19,280 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-13 01:42:19,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [5, 5] total 11 [2021-11-13 01:42:19,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940177116] [2021-11-13 01:42:19,281 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:42:19,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:42:19,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:42:19,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:42:19,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-13 01:42:19,282 INFO L87 Difference]: Start difference. First operand 10368 states and 13906 transitions. Second operand has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 3 states have call successors, (36), 3 states have call predecessors, (36), 4 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) [2021-11-13 01:42:21,724 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.44s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:42:27,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:42:27,288 INFO L93 Difference]: Finished difference Result 20721 states and 27884 transitions. [2021-11-13 01:42:27,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:42:27,288 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 3 states have call successors, (36), 3 states have call predecessors, (36), 4 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) Word has length 191 [2021-11-13 01:42:27,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:42:27,348 INFO L225 Difference]: With dead ends: 20721 [2021-11-13 01:42:27,349 INFO L226 Difference]: Without dead ends: 10368 [2021-11-13 01:42:27,385 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 760 GetRequests, 751 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-13 01:42:27,386 INFO L933 BasicCegarLoop]: 2143 mSDtfsCounter, 3322 mSDsluCounter, 1356 mSDsCounter, 0 mSdLazyCounter, 788 mSolverCounterSat, 771 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6932.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3322 SdHoareTripleChecker+Valid, 3499 SdHoareTripleChecker+Invalid, 1560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.75ms SdHoareTripleChecker+Time, 771 IncrementalHoareTripleChecker+Valid, 788 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7527.16ms IncrementalHoareTripleChecker+Time [2021-11-13 01:42:27,386 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3322 Valid, 3499 Invalid, 1560 Unknown, 0 Unchecked, 17.75ms Time], IncrementalHoareTripleChecker [771 Valid, 788 Invalid, 1 Unknown, 0 Unchecked, 7527.16ms Time] [2021-11-13 01:42:27,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10368 states. [2021-11-13 01:42:28,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10368 to 10368. [2021-11-13 01:42:28,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10368 states, 7274 states have (on average 1.232196865548529) internal successors, (8963), 7414 states have internal predecessors, (8963), 2455 states have call successors, (2455), 642 states have call predecessors, (2455), 637 states have return successors, (2480), 2412 states have call predecessors, (2480), 2455 states have call successors, (2480) [2021-11-13 01:42:28,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10368 states to 10368 states and 13898 transitions. [2021-11-13 01:42:28,261 INFO L78 Accepts]: Start accepts. Automaton has 10368 states and 13898 transitions. Word has length 191 [2021-11-13 01:42:28,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:42:28,262 INFO L470 AbstractCegarLoop]: Abstraction has 10368 states and 13898 transitions. [2021-11-13 01:42:28,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 3 states have call successors, (36), 3 states have call predecessors, (36), 4 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) [2021-11-13 01:42:28,263 INFO L276 IsEmpty]: Start isEmpty. Operand 10368 states and 13898 transitions. [2021-11-13 01:42:28,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-11-13 01:42:28,274 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:42:28,274 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 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] [2021-11-13 01:42:28,298 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (10)] Ended with exit code 0 [2021-11-13 01:42:28,537 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-11-13 01:42:28,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:42:28,689 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:42:28,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:42:28,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1975011575, now seen corresponding path program 1 times [2021-11-13 01:42:28,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:42:28,694 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1136583031] [2021-11-13 01:42:28,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:42:28,694 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:42:28,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:42:28,695 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:42:28,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-13 01:42:32,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:42:32,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 2010 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 01:42:32,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:42:33,771 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 115 proven. 3 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2021-11-13 01:42:33,771 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:42:34,570 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2021-11-13 01:42:34,570 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:42:34,570 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1136583031] [2021-11-13 01:42:34,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1136583031] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:42:34,570 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [190592032] [2021-11-13 01:42:34,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:42:34,571 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:42:34,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:42:34,571 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:42:34,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-11-13 01:42:36,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:42:36,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 2010 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 01:42:36,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:42:38,624 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2021-11-13 01:42:38,624 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:42:39,849 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2021-11-13 01:42:39,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [190592032] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:42:39,850 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-13 01:42:39,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [5, 5] total 11 [2021-11-13 01:42:39,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535217838] [2021-11-13 01:42:39,851 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:42:39,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:42:39,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:42:39,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:42:39,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-13 01:42:39,853 INFO L87 Difference]: Start difference. First operand 10368 states and 13898 transitions. Second operand has 5 states, 5 states have (on average 33.8) internal successors, (169), 5 states have internal predecessors, (169), 3 states have call successors, (36), 3 states have call predecessors, (36), 4 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) [2021-11-13 01:42:42,330 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.47s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:42:47,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:42:47,924 INFO L93 Difference]: Finished difference Result 20721 states and 27868 transitions. [2021-11-13 01:42:47,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:42:47,925 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.8) internal successors, (169), 5 states have internal predecessors, (169), 3 states have call successors, (36), 3 states have call predecessors, (36), 4 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) Word has length 192 [2021-11-13 01:42:47,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:42:47,982 INFO L225 Difference]: With dead ends: 20721 [2021-11-13 01:42:47,983 INFO L226 Difference]: Without dead ends: 10368 [2021-11-13 01:42:48,019 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 764 GetRequests, 755 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-13 01:42:48,020 INFO L933 BasicCegarLoop]: 2142 mSDtfsCounter, 2043 mSDsluCounter, 1355 mSDsCounter, 0 mSdLazyCounter, 788 mSolverCounterSat, 19 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6823.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2043 SdHoareTripleChecker+Valid, 3497 SdHoareTripleChecker+Invalid, 808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.59ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 788 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7367.92ms IncrementalHoareTripleChecker+Time [2021-11-13 01:42:48,021 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2043 Valid, 3497 Invalid, 808 Unknown, 0 Unchecked, 14.59ms Time], IncrementalHoareTripleChecker [19 Valid, 788 Invalid, 1 Unknown, 0 Unchecked, 7367.92ms Time] [2021-11-13 01:42:48,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10368 states. [2021-11-13 01:42:48,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10368 to 10368. [2021-11-13 01:42:48,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10368 states, 7274 states have (on average 1.2310970580148475) internal successors, (8955), 7414 states have internal predecessors, (8955), 2455 states have call successors, (2455), 642 states have call predecessors, (2455), 637 states have return successors, (2480), 2412 states have call predecessors, (2480), 2455 states have call successors, (2480) [2021-11-13 01:42:48,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10368 states to 10368 states and 13890 transitions. [2021-11-13 01:42:48,875 INFO L78 Accepts]: Start accepts. Automaton has 10368 states and 13890 transitions. Word has length 192 [2021-11-13 01:42:48,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:42:48,876 INFO L470 AbstractCegarLoop]: Abstraction has 10368 states and 13890 transitions. [2021-11-13 01:42:48,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.8) internal successors, (169), 5 states have internal predecessors, (169), 3 states have call successors, (36), 3 states have call predecessors, (36), 4 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) [2021-11-13 01:42:48,877 INFO L276 IsEmpty]: Start isEmpty. Operand 10368 states and 13890 transitions. [2021-11-13 01:42:48,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-11-13 01:42:48,887 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:42:48,887 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 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] [2021-11-13 01:42:48,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2021-11-13 01:42:49,164 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-13 01:42:49,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:42:49,301 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:42:49,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:42:49,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1341976880, now seen corresponding path program 1 times [2021-11-13 01:42:49,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:42:49,307 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2018535057] [2021-11-13 01:42:49,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:42:49,307 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:42:49,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:42:49,309 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:42:49,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-13 01:42:53,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:42:53,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 2011 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 01:42:53,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:42:54,466 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 115 proven. 3 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2021-11-13 01:42:54,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:42:55,378 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2021-11-13 01:42:55,378 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:42:55,378 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2018535057] [2021-11-13 01:42:55,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2018535057] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:42:55,378 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [805944358] [2021-11-13 01:42:55,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:42:55,379 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:42:55,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:42:55,382 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:42:55,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-11-13 01:42:57,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:42:57,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 2011 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 01:42:57,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:42:59,597 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2021-11-13 01:42:59,597 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:43:00,821 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2021-11-13 01:43:00,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [805944358] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:43:00,821 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-13 01:43:00,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [5, 5] total 11 [2021-11-13 01:43:00,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329939485] [2021-11-13 01:43:00,822 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:43:00,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:43:00,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:43:00,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:43:00,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-13 01:43:00,824 INFO L87 Difference]: Start difference. First operand 10368 states and 13890 transitions. Second operand has 5 states, 5 states have (on average 34.2) internal successors, (171), 5 states have internal predecessors, (171), 3 states have call successors, (36), 3 states have call predecessors, (36), 4 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) [2021-11-13 01:43:03,259 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 01:43:08,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:43:08,560 INFO L93 Difference]: Finished difference Result 20721 states and 27852 transitions. [2021-11-13 01:43:08,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:43:08,560 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.2) internal successors, (171), 5 states have internal predecessors, (171), 3 states have call successors, (36), 3 states have call predecessors, (36), 4 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) Word has length 193 [2021-11-13 01:43:08,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:43:08,616 INFO L225 Difference]: With dead ends: 20721 [2021-11-13 01:43:08,617 INFO L226 Difference]: Without dead ends: 10368 [2021-11-13 01:43:08,651 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 768 GetRequests, 759 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-13 01:43:08,652 INFO L933 BasicCegarLoop]: 2141 mSDtfsCounter, 2042 mSDsluCounter, 1354 mSDsCounter, 0 mSdLazyCounter, 788 mSolverCounterSat, 19 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6618.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2042 SdHoareTripleChecker+Valid, 3495 SdHoareTripleChecker+Invalid, 808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.02ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 788 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7133.13ms IncrementalHoareTripleChecker+Time [2021-11-13 01:43:08,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2042 Valid, 3495 Invalid, 808 Unknown, 0 Unchecked, 14.02ms Time], IncrementalHoareTripleChecker [19 Valid, 788 Invalid, 1 Unknown, 0 Unchecked, 7133.13ms Time] [2021-11-13 01:43:08,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10368 states. [2021-11-13 01:43:09,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10368 to 10368. [2021-11-13 01:43:09,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10368 states, 7274 states have (on average 1.2299972504811658) internal successors, (8947), 7414 states have internal predecessors, (8947), 2455 states have call successors, (2455), 642 states have call predecessors, (2455), 637 states have return successors, (2480), 2412 states have call predecessors, (2480), 2455 states have call successors, (2480) [2021-11-13 01:43:09,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10368 states to 10368 states and 13882 transitions. [2021-11-13 01:43:09,454 INFO L78 Accepts]: Start accepts. Automaton has 10368 states and 13882 transitions. Word has length 193 [2021-11-13 01:43:09,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:43:09,458 INFO L470 AbstractCegarLoop]: Abstraction has 10368 states and 13882 transitions. [2021-11-13 01:43:09,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.2) internal successors, (171), 5 states have internal predecessors, (171), 3 states have call successors, (36), 3 states have call predecessors, (36), 4 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) [2021-11-13 01:43:09,458 INFO L276 IsEmpty]: Start isEmpty. Operand 10368 states and 13882 transitions. [2021-11-13 01:43:09,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-11-13 01:43:09,478 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:43:09,478 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 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] [2021-11-13 01:43:09,497 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2021-11-13 01:43:09,761 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-13 01:43:09,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:43:09,894 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:43:09,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:43:09,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1203920485, now seen corresponding path program 1 times [2021-11-13 01:43:09,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:43:09,900 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1791439432] [2021-11-13 01:43:09,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:43:09,900 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:43:09,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:43:09,902 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:43:09,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-13 01:43:13,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:43:13,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 2012 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 01:43:13,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:43:14,595 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 115 proven. 3 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2021-11-13 01:43:14,595 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:43:15,449 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2021-11-13 01:43:15,449 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:43:15,450 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1791439432] [2021-11-13 01:43:15,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1791439432] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:43:15,450 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1297739639] [2021-11-13 01:43:15,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:43:15,450 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:43:15,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:43:15,457 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:43:15,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2021-11-13 01:43:17,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:43:17,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 2012 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 01:43:17,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:43:19,459 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2021-11-13 01:43:19,459 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:43:20,772 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2021-11-13 01:43:20,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1297739639] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:43:20,772 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-13 01:43:20,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [5, 5] total 11 [2021-11-13 01:43:20,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775152656] [2021-11-13 01:43:20,773 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:43:20,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:43:20,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:43:20,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:43:20,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-13 01:43:20,776 INFO L87 Difference]: Start difference. First operand 10368 states and 13882 transitions. Second operand has 5 states, 5 states have (on average 34.6) internal successors, (173), 5 states have internal predecessors, (173), 3 states have call successors, (36), 3 states have call predecessors, (36), 4 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) [2021-11-13 01:43:23,261 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.48s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:43:28,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:43:28,975 INFO L93 Difference]: Finished difference Result 20721 states and 27836 transitions. [2021-11-13 01:43:28,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:43:28,976 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.6) internal successors, (173), 5 states have internal predecessors, (173), 3 states have call successors, (36), 3 states have call predecessors, (36), 4 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) Word has length 194 [2021-11-13 01:43:28,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:43:29,035 INFO L225 Difference]: With dead ends: 20721 [2021-11-13 01:43:29,035 INFO L226 Difference]: Without dead ends: 10368 [2021-11-13 01:43:29,072 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 772 GetRequests, 763 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-13 01:43:29,073 INFO L933 BasicCegarLoop]: 2140 mSDtfsCounter, 2041 mSDsluCounter, 1353 mSDsCounter, 0 mSdLazyCounter, 788 mSolverCounterSat, 19 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6885.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2041 SdHoareTripleChecker+Valid, 3493 SdHoareTripleChecker+Invalid, 808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.28ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 788 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7419.75ms IncrementalHoareTripleChecker+Time [2021-11-13 01:43:29,073 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2041 Valid, 3493 Invalid, 808 Unknown, 0 Unchecked, 14.28ms Time], IncrementalHoareTripleChecker [19 Valid, 788 Invalid, 1 Unknown, 0 Unchecked, 7419.75ms Time] [2021-11-13 01:43:29,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10368 states. [2021-11-13 01:43:29,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10368 to 10368. [2021-11-13 01:43:29,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10368 states, 7274 states have (on average 1.2288974429474842) internal successors, (8939), 7414 states have internal predecessors, (8939), 2455 states have call successors, (2455), 642 states have call predecessors, (2455), 637 states have return successors, (2480), 2412 states have call predecessors, (2480), 2455 states have call successors, (2480) [2021-11-13 01:43:29,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10368 states to 10368 states and 13874 transitions. [2021-11-13 01:43:29,822 INFO L78 Accepts]: Start accepts. Automaton has 10368 states and 13874 transitions. Word has length 194 [2021-11-13 01:43:29,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:43:29,823 INFO L470 AbstractCegarLoop]: Abstraction has 10368 states and 13874 transitions. [2021-11-13 01:43:29,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.6) internal successors, (173), 5 states have internal predecessors, (173), 3 states have call successors, (36), 3 states have call predecessors, (36), 4 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) [2021-11-13 01:43:29,823 INFO L276 IsEmpty]: Start isEmpty. Operand 10368 states and 13874 transitions. [2021-11-13 01:43:29,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-11-13 01:43:29,831 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:43:29,831 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 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] [2021-11-13 01:43:29,882 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-11-13 01:43:30,050 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2021-11-13 01:43:30,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-13 01:43:30,232 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:43:30,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:43:30,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1333656140, now seen corresponding path program 1 times [2021-11-13 01:43:30,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:43:30,236 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [584780179] [2021-11-13 01:43:30,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:43:30,236 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:43:30,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:43:30,237 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:43:30,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-13 01:43:33,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:43:34,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 2013 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 01:43:34,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:43:35,033 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 115 proven. 3 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2021-11-13 01:43:35,034 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:43:35,810 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2021-11-13 01:43:35,810 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:43:35,810 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [584780179] [2021-11-13 01:43:35,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [584780179] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:43:35,811 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [451914037] [2021-11-13 01:43:35,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:43:35,811 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:43:35,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:43:35,812 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:43:35,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-11-13 01:43:37,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:43:37,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 2013 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 01:43:37,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:43:39,635 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2021-11-13 01:43:39,635 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:43:40,864 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2021-11-13 01:43:40,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [451914037] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:43:40,865 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-13 01:43:40,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [5, 5] total 11 [2021-11-13 01:43:40,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926814743] [2021-11-13 01:43:40,865 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:43:40,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:43:40,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:43:40,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:43:40,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-13 01:43:40,866 INFO L87 Difference]: Start difference. First operand 10368 states and 13874 transitions. Second operand has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 3 states have call successors, (36), 3 states have call predecessors, (36), 4 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) [2021-11-13 01:43:43,278 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 01:43:49,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:43:49,265 INFO L93 Difference]: Finished difference Result 20721 states and 27820 transitions. [2021-11-13 01:43:49,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:43:49,265 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 3 states have call successors, (36), 3 states have call predecessors, (36), 4 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) Word has length 195 [2021-11-13 01:43:49,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:43:49,321 INFO L225 Difference]: With dead ends: 20721 [2021-11-13 01:43:49,322 INFO L226 Difference]: Without dead ends: 10368 [2021-11-13 01:43:49,353 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 776 GetRequests, 767 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-13 01:43:49,354 INFO L933 BasicCegarLoop]: 2139 mSDtfsCounter, 3310 mSDsluCounter, 1352 mSDsCounter, 0 mSdLazyCounter, 788 mSolverCounterSat, 771 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7073.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3310 SdHoareTripleChecker+Valid, 3491 SdHoareTripleChecker+Invalid, 1560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.98ms SdHoareTripleChecker+Time, 771 IncrementalHoareTripleChecker+Valid, 788 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7664.16ms IncrementalHoareTripleChecker+Time [2021-11-13 01:43:49,356 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3310 Valid, 3491 Invalid, 1560 Unknown, 0 Unchecked, 17.98ms Time], IncrementalHoareTripleChecker [771 Valid, 788 Invalid, 1 Unknown, 0 Unchecked, 7664.16ms Time] [2021-11-13 01:43:49,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10368 states. [2021-11-13 01:43:50,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10368 to 10368. [2021-11-13 01:43:50,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10368 states, 7274 states have (on average 1.2277976354138025) internal successors, (8931), 7414 states have internal predecessors, (8931), 2455 states have call successors, (2455), 642 states have call predecessors, (2455), 637 states have return successors, (2480), 2412 states have call predecessors, (2480), 2455 states have call successors, (2480) [2021-11-13 01:43:50,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10368 states to 10368 states and 13866 transitions. [2021-11-13 01:43:50,089 INFO L78 Accepts]: Start accepts. Automaton has 10368 states and 13866 transitions. Word has length 195 [2021-11-13 01:43:50,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:43:50,090 INFO L470 AbstractCegarLoop]: Abstraction has 10368 states and 13866 transitions. [2021-11-13 01:43:50,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 3 states have call successors, (36), 3 states have call predecessors, (36), 4 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) [2021-11-13 01:43:50,091 INFO L276 IsEmpty]: Start isEmpty. Operand 10368 states and 13866 transitions. [2021-11-13 01:43:50,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2021-11-13 01:43:50,102 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:43:50,102 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 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] [2021-11-13 01:43:50,164 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-13 01:43:50,347 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2021-11-13 01:43:50,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-13 01:43:50,529 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:43:50,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:43:50,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1175010753, now seen corresponding path program 1 times [2021-11-13 01:43:50,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:43:50,534 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [236305735] [2021-11-13 01:43:50,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:43:50,534 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:43:50,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:43:50,535 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:43:50,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-13 01:43:54,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:43:54,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 2014 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 01:43:54,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:43:55,428 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 115 proven. 3 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2021-11-13 01:43:55,428 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:43:56,261 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2021-11-13 01:43:56,261 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:43:56,261 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [236305735] [2021-11-13 01:43:56,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [236305735] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:43:56,261 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1479230556] [2021-11-13 01:43:56,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:43:56,261 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:43:56,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:43:56,263 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:43:56,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2021-11-13 01:43:58,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:43:58,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 2014 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 01:43:58,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:44:00,172 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2021-11-13 01:44:00,173 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:44:01,383 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2021-11-13 01:44:01,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1479230556] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:44:01,383 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-13 01:44:01,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [5, 5] total 11 [2021-11-13 01:44:01,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227988911] [2021-11-13 01:44:01,384 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:44:01,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:44:01,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:44:01,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:44:01,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-13 01:44:01,386 INFO L87 Difference]: Start difference. First operand 10368 states and 13866 transitions. Second operand has 5 states, 5 states have (on average 35.4) internal successors, (177), 5 states have internal predecessors, (177), 3 states have call successors, (36), 3 states have call predecessors, (36), 4 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) [2021-11-13 01:44:03,794 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.40s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:44:08,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:44:08,956 INFO L93 Difference]: Finished difference Result 20721 states and 27804 transitions. [2021-11-13 01:44:08,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:44:08,956 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.4) internal successors, (177), 5 states have internal predecessors, (177), 3 states have call successors, (36), 3 states have call predecessors, (36), 4 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) Word has length 196 [2021-11-13 01:44:08,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:44:09,009 INFO L225 Difference]: With dead ends: 20721 [2021-11-13 01:44:09,009 INFO L226 Difference]: Without dead ends: 10368 [2021-11-13 01:44:09,042 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 780 GetRequests, 771 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-13 01:44:09,043 INFO L933 BasicCegarLoop]: 2138 mSDtfsCounter, 2039 mSDsluCounter, 1351 mSDsCounter, 0 mSdLazyCounter, 788 mSolverCounterSat, 19 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6449.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2039 SdHoareTripleChecker+Valid, 3489 SdHoareTripleChecker+Invalid, 808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.33ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 788 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6956.83ms IncrementalHoareTripleChecker+Time [2021-11-13 01:44:09,043 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2039 Valid, 3489 Invalid, 808 Unknown, 0 Unchecked, 12.33ms Time], IncrementalHoareTripleChecker [19 Valid, 788 Invalid, 1 Unknown, 0 Unchecked, 6956.83ms Time] [2021-11-13 01:44:09,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10368 states. [2021-11-13 01:44:09,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10368 to 10368. [2021-11-13 01:44:09,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10368 states, 7274 states have (on average 1.226697827880121) internal successors, (8923), 7414 states have internal predecessors, (8923), 2455 states have call successors, (2455), 642 states have call predecessors, (2455), 637 states have return successors, (2480), 2412 states have call predecessors, (2480), 2455 states have call successors, (2480) [2021-11-13 01:44:09,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10368 states to 10368 states and 13858 transitions. [2021-11-13 01:44:09,888 INFO L78 Accepts]: Start accepts. Automaton has 10368 states and 13858 transitions. Word has length 196 [2021-11-13 01:44:09,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:44:09,889 INFO L470 AbstractCegarLoop]: Abstraction has 10368 states and 13858 transitions. [2021-11-13 01:44:09,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.4) internal successors, (177), 5 states have internal predecessors, (177), 3 states have call successors, (36), 3 states have call predecessors, (36), 4 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) [2021-11-13 01:44:09,889 INFO L276 IsEmpty]: Start isEmpty. Operand 10368 states and 13858 transitions. [2021-11-13 01:44:09,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-11-13 01:44:09,899 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:44:09,899 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 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] [2021-11-13 01:44:09,951 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-13 01:44:10,136 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2021-11-13 01:44:10,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-13 01:44:10,321 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:44:10,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:44:10,322 INFO L85 PathProgramCache]: Analyzing trace with hash 666487656, now seen corresponding path program 1 times [2021-11-13 01:44:10,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:44:10,326 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1563686797] [2021-11-13 01:44:10,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:44:10,326 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:44:10,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:44:10,327 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:44:10,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-13 01:44:14,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:44:14,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 2015 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 01:44:14,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:44:15,148 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 115 proven. 3 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2021-11-13 01:44:15,148 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:44:15,950 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2021-11-13 01:44:15,950 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:44:15,950 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1563686797] [2021-11-13 01:44:15,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1563686797] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:44:15,950 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [891117906] [2021-11-13 01:44:15,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:44:15,951 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:44:15,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:44:15,952 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:44:15,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2021-11-13 01:44:18,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:44:18,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 2015 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 01:44:18,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:44:20,175 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2021-11-13 01:44:20,176 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:44:21,479 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2021-11-13 01:44:21,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [891117906] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:44:21,479 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-13 01:44:21,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [5, 5] total 11 [2021-11-13 01:44:21,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121412295] [2021-11-13 01:44:21,481 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:44:21,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:44:21,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:44:21,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:44:21,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-13 01:44:21,483 INFO L87 Difference]: Start difference. First operand 10368 states and 13858 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 3 states have call successors, (36), 3 states have call predecessors, (36), 4 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) [2021-11-13 01:44:23,933 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 01:44:29,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:44:29,556 INFO L93 Difference]: Finished difference Result 20721 states and 27788 transitions. [2021-11-13 01:44:29,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:44:29,557 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 3 states have call successors, (36), 3 states have call predecessors, (36), 4 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) Word has length 197 [2021-11-13 01:44:29,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:44:29,608 INFO L225 Difference]: With dead ends: 20721 [2021-11-13 01:44:29,608 INFO L226 Difference]: Without dead ends: 10368 [2021-11-13 01:44:29,648 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 784 GetRequests, 775 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-13 01:44:29,649 INFO L933 BasicCegarLoop]: 2137 mSDtfsCounter, 2038 mSDsluCounter, 1350 mSDsCounter, 0 mSdLazyCounter, 788 mSolverCounterSat, 19 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6829.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2038 SdHoareTripleChecker+Valid, 3487 SdHoareTripleChecker+Invalid, 808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.82ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 788 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7384.50ms IncrementalHoareTripleChecker+Time [2021-11-13 01:44:29,649 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2038 Valid, 3487 Invalid, 808 Unknown, 0 Unchecked, 12.82ms Time], IncrementalHoareTripleChecker [19 Valid, 788 Invalid, 1 Unknown, 0 Unchecked, 7384.50ms Time] [2021-11-13 01:44:29,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10368 states. [2021-11-13 01:44:30,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10368 to 10368. [2021-11-13 01:44:30,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10368 states, 7274 states have (on average 1.2255980203464394) internal successors, (8915), 7414 states have internal predecessors, (8915), 2455 states have call successors, (2455), 642 states have call predecessors, (2455), 637 states have return successors, (2480), 2412 states have call predecessors, (2480), 2455 states have call successors, (2480) [2021-11-13 01:44:30,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10368 states to 10368 states and 13850 transitions. [2021-11-13 01:44:30,537 INFO L78 Accepts]: Start accepts. Automaton has 10368 states and 13850 transitions. Word has length 197 [2021-11-13 01:44:30,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:44:30,538 INFO L470 AbstractCegarLoop]: Abstraction has 10368 states and 13850 transitions. [2021-11-13 01:44:30,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 3 states have call successors, (36), 3 states have call predecessors, (36), 4 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) [2021-11-13 01:44:30,538 INFO L276 IsEmpty]: Start isEmpty. Operand 10368 states and 13850 transitions. [2021-11-13 01:44:30,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2021-11-13 01:44:30,548 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:44:30,548 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 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] [2021-11-13 01:44:30,614 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-13 01:44:30,785 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (22)] Forceful destruction successful, exit code 0 [2021-11-13 01:44:30,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-13 01:44:30,961 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:44:30,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:44:30,962 INFO L85 PathProgramCache]: Analyzing trace with hash -2098309859, now seen corresponding path program 1 times [2021-11-13 01:44:30,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:44:30,965 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [840643967] [2021-11-13 01:44:30,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:44:30,965 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:44:30,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:44:30,968 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:44:30,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-13 01:44:34,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:44:34,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 2016 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 01:44:34,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:44:35,528 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 115 proven. 3 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2021-11-13 01:44:35,528 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:44:36,255 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2021-11-13 01:44:36,255 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:44:36,255 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [840643967] [2021-11-13 01:44:36,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [840643967] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:44:36,256 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2090282707] [2021-11-13 01:44:36,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:44:36,256 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:44:36,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:44:36,259 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:44:36,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2021-11-13 01:44:38,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:44:38,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 2016 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 01:44:38,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:44:40,126 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2021-11-13 01:44:40,127 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:44:41,317 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2021-11-13 01:44:41,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2090282707] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:44:41,317 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-13 01:44:41,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [5, 5] total 11 [2021-11-13 01:44:41,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115086923] [2021-11-13 01:44:41,318 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:44:41,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:44:41,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:44:41,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:44:41,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-13 01:44:41,319 INFO L87 Difference]: Start difference. First operand 10368 states and 13850 transitions. Second operand has 5 states, 5 states have (on average 36.2) internal successors, (181), 5 states have internal predecessors, (181), 3 states have call successors, (36), 3 states have call predecessors, (36), 4 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) [2021-11-13 01:44:43,709 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.39s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:44:49,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:44:49,305 INFO L93 Difference]: Finished difference Result 20721 states and 27772 transitions. [2021-11-13 01:44:49,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:44:49,306 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.2) internal successors, (181), 5 states have internal predecessors, (181), 3 states have call successors, (36), 3 states have call predecessors, (36), 4 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) Word has length 198 [2021-11-13 01:44:49,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:44:49,339 INFO L225 Difference]: With dead ends: 20721 [2021-11-13 01:44:49,339 INFO L226 Difference]: Without dead ends: 10368 [2021-11-13 01:44:49,365 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 788 GetRequests, 779 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-13 01:44:49,366 INFO L933 BasicCegarLoop]: 2136 mSDtfsCounter, 3301 mSDsluCounter, 1349 mSDsCounter, 0 mSdLazyCounter, 788 mSolverCounterSat, 771 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6629.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3301 SdHoareTripleChecker+Valid, 3485 SdHoareTripleChecker+Invalid, 1560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.97ms SdHoareTripleChecker+Time, 771 IncrementalHoareTripleChecker+Valid, 788 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7182.34ms IncrementalHoareTripleChecker+Time [2021-11-13 01:44:49,367 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3301 Valid, 3485 Invalid, 1560 Unknown, 0 Unchecked, 14.97ms Time], IncrementalHoareTripleChecker [771 Valid, 788 Invalid, 1 Unknown, 0 Unchecked, 7182.34ms Time] [2021-11-13 01:44:49,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10368 states. [2021-11-13 01:44:50,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10368 to 10368. [2021-11-13 01:44:50,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10368 states, 7274 states have (on average 1.2244982128127577) internal successors, (8907), 7414 states have internal predecessors, (8907), 2455 states have call successors, (2455), 642 states have call predecessors, (2455), 637 states have return successors, (2480), 2412 states have call predecessors, (2480), 2455 states have call successors, (2480) [2021-11-13 01:44:50,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10368 states to 10368 states and 13842 transitions. [2021-11-13 01:44:50,071 INFO L78 Accepts]: Start accepts. Automaton has 10368 states and 13842 transitions. Word has length 198 [2021-11-13 01:44:50,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:44:50,072 INFO L470 AbstractCegarLoop]: Abstraction has 10368 states and 13842 transitions. [2021-11-13 01:44:50,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.2) internal successors, (181), 5 states have internal predecessors, (181), 3 states have call successors, (36), 3 states have call predecessors, (36), 4 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) [2021-11-13 01:44:50,072 INFO L276 IsEmpty]: Start isEmpty. Operand 10368 states and 13842 transitions. [2021-11-13 01:44:50,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-11-13 01:44:50,082 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:44:50,082 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 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] [2021-11-13 01:44:50,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-11-13 01:44:50,315 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (24)] Forceful destruction successful, exit code 0 [2021-11-13 01:44:50,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-13 01:44:50,497 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:44:50,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:44:50,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1793170300, now seen corresponding path program 1 times [2021-11-13 01:44:50,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:44:50,501 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1529210793] [2021-11-13 01:44:50,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:44:50,501 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:44:50,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:44:50,502 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:44:50,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-13 01:44:54,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:44:54,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 2017 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 01:44:54,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:44:55,369 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 115 proven. 3 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2021-11-13 01:44:55,369 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:44:56,127 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2021-11-13 01:44:56,127 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:44:56,127 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1529210793] [2021-11-13 01:44:56,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1529210793] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:44:56,127 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [254099115] [2021-11-13 01:44:56,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:44:56,128 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:44:56,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:44:56,128 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:44:56,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2021-11-13 01:44:58,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:44:58,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 2017 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 01:44:58,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:44:59,912 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2021-11-13 01:44:59,912 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:45:01,101 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2021-11-13 01:45:01,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [254099115] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:45:01,101 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-13 01:45:01,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [5, 5] total 11 [2021-11-13 01:45:01,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668245705] [2021-11-13 01:45:01,102 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:45:01,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:45:01,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:45:01,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:45:01,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-13 01:45:01,103 INFO L87 Difference]: Start difference. First operand 10368 states and 13842 transitions. Second operand has 5 states, 5 states have (on average 36.6) internal successors, (183), 5 states have internal predecessors, (183), 3 states have call successors, (36), 3 states have call predecessors, (36), 4 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) [2021-11-13 01:45:03,479 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:45:08,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:45:08,745 INFO L93 Difference]: Finished difference Result 20721 states and 27756 transitions. [2021-11-13 01:45:08,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:45:08,745 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.6) internal successors, (183), 5 states have internal predecessors, (183), 3 states have call successors, (36), 3 states have call predecessors, (36), 4 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) Word has length 199 [2021-11-13 01:45:08,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:45:08,772 INFO L225 Difference]: With dead ends: 20721 [2021-11-13 01:45:08,773 INFO L226 Difference]: Without dead ends: 10368 [2021-11-13 01:45:08,793 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 792 GetRequests, 783 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-13 01:45:08,793 INFO L933 BasicCegarLoop]: 2135 mSDtfsCounter, 2036 mSDsluCounter, 1348 mSDsCounter, 0 mSdLazyCounter, 788 mSolverCounterSat, 19 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6365.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2036 SdHoareTripleChecker+Valid, 3483 SdHoareTripleChecker+Invalid, 808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.12ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 788 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6875.14ms IncrementalHoareTripleChecker+Time [2021-11-13 01:45:08,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2036 Valid, 3483 Invalid, 808 Unknown, 0 Unchecked, 12.12ms Time], IncrementalHoareTripleChecker [19 Valid, 788 Invalid, 1 Unknown, 0 Unchecked, 6875.14ms Time] [2021-11-13 01:45:08,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10368 states. [2021-11-13 01:45:09,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10368 to 10368. [2021-11-13 01:45:09,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10368 states, 7274 states have (on average 1.223398405279076) internal successors, (8899), 7414 states have internal predecessors, (8899), 2455 states have call successors, (2455), 642 states have call predecessors, (2455), 637 states have return successors, (2480), 2412 states have call predecessors, (2480), 2455 states have call successors, (2480) [2021-11-13 01:45:09,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10368 states to 10368 states and 13834 transitions. [2021-11-13 01:45:09,583 INFO L78 Accepts]: Start accepts. Automaton has 10368 states and 13834 transitions. Word has length 199 [2021-11-13 01:45:09,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:45:09,584 INFO L470 AbstractCegarLoop]: Abstraction has 10368 states and 13834 transitions. [2021-11-13 01:45:09,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.6) internal successors, (183), 5 states have internal predecessors, (183), 3 states have call successors, (36), 3 states have call predecessors, (36), 4 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) [2021-11-13 01:45:09,584 INFO L276 IsEmpty]: Start isEmpty. Operand 10368 states and 13834 transitions. [2021-11-13 01:45:09,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-11-13 01:45:09,590 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:45:09,591 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 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] [2021-11-13 01:45:09,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-11-13 01:45:09,808 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (26)] Ended with exit code 0 [2021-11-13 01:45:09,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-13 01:45:09,992 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:45:09,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:45:09,992 INFO L85 PathProgramCache]: Analyzing trace with hash -809261959, now seen corresponding path program 1 times [2021-11-13 01:45:09,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:45:09,998 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [856131629] [2021-11-13 01:45:09,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:45:09,998 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:45:09,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:45:09,999 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:45:10,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-11-13 01:45:13,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:45:14,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 2018 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 01:45:14,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:45:14,995 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 115 proven. 3 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2021-11-13 01:45:14,995 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:45:15,768 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2021-11-13 01:45:15,769 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:45:15,769 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [856131629] [2021-11-13 01:45:15,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [856131629] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:45:15,769 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [669788083] [2021-11-13 01:45:15,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:45:15,769 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:45:15,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:45:15,770 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:45:15,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0ef70c-b273-4b68-b82d-59b9354972e2/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2021-11-13 01:45:17,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:45:17,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 2018 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 01:45:17,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:45:19,742 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2021-11-13 01:45:19,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:45:20,931 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2021-11-13 01:45:20,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [669788083] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:45:20,932 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-13 01:45:20,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [5, 5] total 11 [2021-11-13 01:45:20,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2657261] [2021-11-13 01:45:20,932 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:45:20,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:45:20,933 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:45:20,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:45:20,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-13 01:45:20,936 INFO L87 Difference]: Start difference. First operand 10368 states and 13834 transitions. Second operand has 5 states, 5 states have (on average 37.0) internal successors, (185), 5 states have internal predecessors, (185), 3 states have call successors, (36), 3 states have call predecessors, (36), 4 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) [2021-11-13 01:45:23,307 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:45:28,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:45:28,561 INFO L93 Difference]: Finished difference Result 20721 states and 27740 transitions. [2021-11-13 01:45:28,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:45:28,562 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 37.0) internal successors, (185), 5 states have internal predecessors, (185), 3 states have call successors, (36), 3 states have call predecessors, (36), 4 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) Word has length 200 [2021-11-13 01:45:28,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted.