./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-irda-via-ircc.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_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/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_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-irda-via-ircc.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/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_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/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 c727ee56ff8cf558c3dc08b64ebc267261ea17bdfb88e50734daf71ad89adc7d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:43:28,798 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:43:28,802 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:43:28,866 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:43:28,867 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:43:28,872 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:43:28,874 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:43:28,879 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:43:28,882 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:43:28,888 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:43:28,889 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:43:28,891 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:43:28,892 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:43:28,894 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:43:28,897 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:43:28,902 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:43:28,904 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:43:28,905 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:43:28,912 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:43:28,921 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:43:28,923 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:43:28,924 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:43:28,928 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:43:28,929 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:43:28,939 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:43:28,940 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:43:28,940 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:43:28,942 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:43:28,943 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:43:28,945 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:43:28,945 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:43:28,946 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:43:28,948 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:43:28,950 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:43:28,951 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:43:28,952 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:43:28,953 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:43:28,953 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:43:28,953 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:43:28,954 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:43:28,955 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:43:28,956 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-12 23:43:28,986 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:43:28,987 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:43:28,988 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:43:28,988 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:43:28,988 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:43:28,989 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:43:28,989 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:43:28,989 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 23:43:28,989 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:43:28,990 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:43:28,990 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 23:43:28,990 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 23:43:28,990 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:43:28,991 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 23:43:28,991 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 23:43:28,991 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 23:43:28,992 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:43:28,992 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:43:28,993 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:43:28,993 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:43:28,993 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:43:28,993 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:43:28,994 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:43:28,994 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:43:28,994 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:43:28,994 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:43:28,995 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:43:28,995 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:43:28,995 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:43:28,995 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:43:28,996 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:43:28,996 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:43:28,996 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 23:43:28,996 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 23:43:28,997 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:43:28,997 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:43:28,997 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:43:28,997 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_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c727ee56ff8cf558c3dc08b64ebc267261ea17bdfb88e50734daf71ad89adc7d [2021-11-12 23:43:29,340 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:43:29,383 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:43:29,386 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:43:29,387 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:43:29,388 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:43:29,390 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-irda-via-ircc.cil.i [2021-11-12 23:43:29,496 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/data/3b38f1ead/628475dd82384b29ba7df6e8b670f95d/FLAG4b06c9d33 [2021-11-12 23:43:30,416 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:43:30,417 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-irda-via-ircc.cil.i [2021-11-12 23:43:30,470 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/data/3b38f1ead/628475dd82384b29ba7df6e8b670f95d/FLAG4b06c9d33 [2021-11-12 23:43:30,922 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/data/3b38f1ead/628475dd82384b29ba7df6e8b670f95d [2021-11-12 23:43:30,924 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:43:30,926 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:43:30,927 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:43:30,927 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:43:30,931 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:43:30,931 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:43:30" (1/1) ... [2021-11-12 23:43:30,932 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c87a42d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:43:30, skipping insertion in model container [2021-11-12 23:43:30,933 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:43:30" (1/1) ... [2021-11-12 23:43:30,940 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:43:31,135 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:43:33,945 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_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-irda-via-ircc.cil.i[328445,328458] [2021-11-12 23:43:33,948 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_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-irda-via-ircc.cil.i[328590,328603] [2021-11-12 23:43:33,973 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:43:34,039 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) [2021-11-12 23:43:34,041 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@9f6702 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:43:34, skipping insertion in model container [2021-11-12 23:43:34,041 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:43:34,042 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-12 23:43:34,044 INFO L158 Benchmark]: Toolchain (without parser) took 3116.87ms. Allocated memory was 102.8MB in the beginning and 138.4MB in the end (delta: 35.7MB). Free memory was 56.1MB in the beginning and 89.7MB in the end (delta: -33.6MB). Peak memory consumption was 47.7MB. Max. memory is 16.1GB. [2021-11-12 23:43:34,045 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 102.8MB. Free memory is still 57.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:43:34,046 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3114.34ms. Allocated memory was 102.8MB in the beginning and 138.4MB in the end (delta: 35.7MB). Free memory was 55.9MB in the beginning and 89.7MB in the end (delta: -33.8MB). Peak memory consumption was 47.7MB. Max. memory is 16.1GB. [2021-11-12 23:43:34,047 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 102.8MB. Free memory is still 57.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3114.34ms. Allocated memory was 102.8MB in the beginning and 138.4MB in the end (delta: 35.7MB). Free memory was 55.9MB in the beginning and 89.7MB in the end (delta: -33.8MB). Peak memory consumption was 47.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 7501]: 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_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/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_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-irda-via-ircc.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/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_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/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 c727ee56ff8cf558c3dc08b64ebc267261ea17bdfb88e50734daf71ad89adc7d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:43:36,390 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:43:36,394 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:43:36,444 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:43:36,445 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:43:36,450 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:43:36,452 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:43:36,457 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:43:36,461 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:43:36,471 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:43:36,472 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:43:36,473 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:43:36,474 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:43:36,475 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:43:36,476 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:43:36,478 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:43:36,479 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:43:36,479 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:43:36,482 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:43:36,492 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:43:36,494 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:43:36,496 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:43:36,500 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:43:36,503 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:43:36,506 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:43:36,507 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:43:36,507 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:43:36,509 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:43:36,509 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:43:36,510 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:43:36,511 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:43:36,512 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:43:36,514 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:43:36,514 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:43:36,516 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:43:36,516 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:43:36,517 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:43:36,517 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:43:36,517 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:43:36,519 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:43:36,520 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:43:36,523 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-12 23:43:36,546 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:43:36,546 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:43:36,547 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:43:36,547 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:43:36,548 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:43:36,548 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:43:36,548 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:43:36,548 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:43:36,548 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:43:36,549 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:43:36,549 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:43:36,550 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:43:36,550 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:43:36,550 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:43:36,550 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:43:36,550 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:43:36,551 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 23:43:36,551 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 23:43:36,551 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:43:36,551 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:43:36,551 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:43:36,552 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:43:36,552 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 23:43:36,552 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:43:36,552 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:43:36,552 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:43:36,553 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:43:36,553 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:43:36,553 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 23:43:36,553 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 23:43:36,553 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:43:36,553 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:43:36,554 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:43:36,554 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_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c727ee56ff8cf558c3dc08b64ebc267261ea17bdfb88e50734daf71ad89adc7d [2021-11-12 23:43:36,989 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:43:37,020 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:43:37,023 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:43:37,024 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:43:37,025 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:43:37,026 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-irda-via-ircc.cil.i [2021-11-12 23:43:37,098 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/data/777006d12/b3ea828d4b624c8f9ad7ae278fa79fbc/FLAG4b8e06183 [2021-11-12 23:43:38,099 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:43:38,101 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-irda-via-ircc.cil.i [2021-11-12 23:43:38,167 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/data/777006d12/b3ea828d4b624c8f9ad7ae278fa79fbc/FLAG4b8e06183 [2021-11-12 23:43:38,482 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/data/777006d12/b3ea828d4b624c8f9ad7ae278fa79fbc [2021-11-12 23:43:38,485 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:43:38,489 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:43:38,491 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:43:38,491 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:43:38,494 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:43:38,495 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:43:38" (1/1) ... [2021-11-12 23:43:38,498 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5766fb51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:43:38, skipping insertion in model container [2021-11-12 23:43:38,498 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:43:38" (1/1) ... [2021-11-12 23:43:38,505 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:43:38,754 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:43:41,478 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_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-irda-via-ircc.cil.i[328445,328458] [2021-11-12 23:43:41,483 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_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-irda-via-ircc.cil.i[328590,328603] [2021-11-12 23:43:41,508 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:43:41,577 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-12 23:43:41,649 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:43:42,088 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_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-irda-via-ircc.cil.i[328445,328458] [2021-11-12 23:43:42,089 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_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-irda-via-ircc.cil.i[328590,328603] [2021-11-12 23:43:42,097 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:43:42,123 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:43:42,578 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_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-irda-via-ircc.cil.i[328445,328458] [2021-11-12 23:43:42,578 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_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-irda-via-ircc.cil.i[328590,328603] [2021-11-12 23:43:42,583 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:43:42,908 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:43:42,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:43:42 WrapperNode [2021-11-12 23:43:42,909 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:43:42,910 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:43:42,910 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:43:42,910 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:43:42,917 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:43:42" (1/1) ... [2021-11-12 23:43:43,063 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:43:42" (1/1) ... [2021-11-12 23:43:43,289 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:43:43,291 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:43:43,291 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:43:43,291 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:43:43,300 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:43:42" (1/1) ... [2021-11-12 23:43:43,301 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:43:42" (1/1) ... [2021-11-12 23:43:43,350 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:43:42" (1/1) ... [2021-11-12 23:43:43,350 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:43:42" (1/1) ... [2021-11-12 23:43:43,619 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:43:42" (1/1) ... [2021-11-12 23:43:43,650 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:43:42" (1/1) ... [2021-11-12 23:43:43,698 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:43:42" (1/1) ... [2021-11-12 23:43:43,736 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:43:43,740 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:43:43,741 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:43:43,741 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:43:43,742 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:43:42" (1/1) ... [2021-11-12 23:43:43,750 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:43:43,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:43:43,780 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:43:43,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:43:43,839 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_97 [2021-11-12 23:43:43,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_97 [2021-11-12 23:43:43,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-12 23:43:43,839 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-12 23:43:43,840 INFO L130 BoogieDeclarations]: Found specification of procedure RxCurCount [2021-11-12 23:43:43,840 INFO L138 BoogieDeclarations]: Found implementation of procedure RxCurCount [2021-11-12 23:43:43,840 INFO L130 BoogieDeclarations]: Found specification of procedure irda_setup_dma [2021-11-12 23:43:43,840 INFO L138 BoogieDeclarations]: Found implementation of procedure irda_setup_dma [2021-11-12 23:43:43,840 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-12 23:43:43,840 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-12 23:43:43,841 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-12 23:43:43,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-12 23:43:43,841 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-12 23:43:43,841 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-12 23:43:43,841 INFO L130 BoogieDeclarations]: Found specification of procedure CheckRegBit [2021-11-12 23:43:43,842 INFO L138 BoogieDeclarations]: Found implementation of procedure CheckRegBit [2021-11-12 23:43:43,842 INFO L130 BoogieDeclarations]: Found specification of procedure via_remove_one [2021-11-12 23:43:43,842 INFO L138 BoogieDeclarations]: Found implementation of procedure via_remove_one [2021-11-12 23:43:43,842 INFO L130 BoogieDeclarations]: Found specification of procedure via_ircc_change_speed [2021-11-12 23:43:43,842 INFO L138 BoogieDeclarations]: Found implementation of procedure via_ircc_change_speed [2021-11-12 23:43:43,842 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~C_INT~structend~~TO~C_INT [2021-11-12 23:43:43,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~C_INT~structend~~TO~C_INT [2021-11-12 23:43:43,843 INFO L130 BoogieDeclarations]: Found specification of procedure dma_zalloc_coherent [2021-11-12 23:43:43,843 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_zalloc_coherent [2021-11-12 23:43:43,843 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-12 23:43:43,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-12 23:43:43,844 INFO L130 BoogieDeclarations]: Found specification of procedure SetPulseWidth [2021-11-12 23:43:43,844 INFO L138 BoogieDeclarations]: Found implementation of procedure SetPulseWidth [2021-11-12 23:43:43,844 INFO L130 BoogieDeclarations]: Found specification of procedure Tdelay [2021-11-12 23:43:43,844 INFO L138 BoogieDeclarations]: Found implementation of procedure Tdelay [2021-11-12 23:43:43,844 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2021-11-12 23:43:43,845 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx [2021-11-12 23:43:43,845 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-12 23:43:43,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-12 23:43:43,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 23:43:43,846 INFO L130 BoogieDeclarations]: Found specification of procedure ClkTx [2021-11-12 23:43:43,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ClkTx [2021-11-12 23:43:43,846 INFO L130 BoogieDeclarations]: Found specification of procedure WriteLPCReg [2021-11-12 23:43:43,847 INFO L138 BoogieDeclarations]: Found implementation of procedure WriteLPCReg [2021-11-12 23:43:43,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 23:43:43,847 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2021-11-12 23:43:43,847 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2021-11-12 23:43:43,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-12 23:43:43,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-12 23:43:43,848 INFO L130 BoogieDeclarations]: Found specification of procedure CommonInit [2021-11-12 23:43:43,848 INFO L138 BoogieDeclarations]: Found implementation of procedure CommonInit [2021-11-12 23:43:43,849 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-12 23:43:43,849 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-12 23:43:43,849 INFO L130 BoogieDeclarations]: Found specification of procedure via_ircc_change_dongle_speed [2021-11-12 23:43:43,850 INFO L138 BoogieDeclarations]: Found implementation of procedure via_ircc_change_dongle_speed [2021-11-12 23:43:43,851 INFO L130 BoogieDeclarations]: Found specification of procedure ReadLPCReg [2021-11-12 23:43:43,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ReadLPCReg [2021-11-12 23:43:43,851 INFO L130 BoogieDeclarations]: Found specification of procedure free_dma [2021-11-12 23:43:43,852 INFO L138 BoogieDeclarations]: Found implementation of procedure free_dma [2021-11-12 23:43:43,852 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_via_ircc_cb [2021-11-12 23:43:43,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_via_ircc_cb [2021-11-12 23:43:43,852 INFO L130 BoogieDeclarations]: Found specification of procedure via_ircc_dma_receive [2021-11-12 23:43:43,852 INFO L138 BoogieDeclarations]: Found implementation of procedure via_ircc_dma_receive [2021-11-12 23:43:43,853 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-12 23:43:43,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-12 23:43:43,853 INFO L130 BoogieDeclarations]: Found specification of procedure via_ircc_net_close [2021-11-12 23:43:43,854 INFO L138 BoogieDeclarations]: Found implementation of procedure via_ircc_net_close [2021-11-12 23:43:43,854 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-12 23:43:43,854 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-12 23:43:43,854 INFO L130 BoogieDeclarations]: Found specification of procedure CkRxRecv [2021-11-12 23:43:43,854 INFO L138 BoogieDeclarations]: Found implementation of procedure CkRxRecv [2021-11-12 23:43:43,855 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-12 23:43:43,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-12 23:43:43,856 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-12 23:43:43,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-12 23:43:43,856 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-11-12 23:43:43,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-11-12 23:43:43,857 INFO L130 BoogieDeclarations]: Found specification of procedure irda_get_next_speed [2021-11-12 23:43:43,857 INFO L138 BoogieDeclarations]: Found implementation of procedure irda_get_next_speed [2021-11-12 23:43:43,857 INFO L130 BoogieDeclarations]: Found specification of procedure ReadReg [2021-11-12 23:43:43,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ReadReg [2021-11-12 23:43:43,857 INFO L130 BoogieDeclarations]: Found specification of procedure via_ircc_open [2021-11-12 23:43:43,857 INFO L138 BoogieDeclarations]: Found implementation of procedure via_ircc_open [2021-11-12 23:43:43,858 INFO L130 BoogieDeclarations]: Found specification of procedure WriteRegBit [2021-11-12 23:43:43,858 INFO L138 BoogieDeclarations]: Found implementation of procedure WriteRegBit [2021-11-12 23:43:43,858 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-12 23:43:43,858 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-12 23:43:43,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-12 23:43:43,859 INFO L130 BoogieDeclarations]: Found specification of procedure Wr_Indx [2021-11-12 23:43:43,860 INFO L138 BoogieDeclarations]: Found implementation of procedure Wr_Indx [2021-11-12 23:43:43,860 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-12 23:43:43,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-12 23:43:43,860 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-12 23:43:43,861 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-12 23:43:43,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-12 23:43:43,862 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-12 23:43:43,862 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-12 23:43:43,862 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-12 23:43:43,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-12 23:43:43,862 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-12 23:43:43,862 INFO L130 BoogieDeclarations]: Found specification of procedure WriteReg [2021-11-12 23:43:43,863 INFO L138 BoogieDeclarations]: Found implementation of procedure WriteReg [2021-11-12 23:43:43,863 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_exclusive_spin_is_locked [2021-11-12 23:43:43,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_exclusive_spin_is_locked [2021-11-12 23:43:43,863 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert [2021-11-12 23:43:43,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert [2021-11-12 23:43:43,864 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-12 23:43:43,864 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-12 23:43:43,864 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-12 23:43:43,865 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-12 23:43:43,865 INFO L130 BoogieDeclarations]: Found specification of procedure SetBaudRate [2021-11-12 23:43:43,865 INFO L138 BoogieDeclarations]: Found implementation of procedure SetBaudRate [2021-11-12 23:43:43,865 INFO L130 BoogieDeclarations]: Found specification of procedure Wr_Byte [2021-11-12 23:43:43,865 INFO L138 BoogieDeclarations]: Found implementation of procedure Wr_Byte [2021-11-12 23:43:43,866 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-12 23:43:43,867 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-12 23:43:43,870 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-12 23:43:43,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-12 23:43:43,872 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-12 23:43:43,872 INFO L130 BoogieDeclarations]: Found specification of procedure via_ircc_net_open [2021-11-12 23:43:43,873 INFO L138 BoogieDeclarations]: Found implementation of procedure via_ircc_net_open [2021-11-12 23:43:43,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:43:43,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:43:43,874 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-12 23:43:43,875 INFO L130 BoogieDeclarations]: Found specification of procedure ResetChip [2021-11-12 23:43:43,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ResetChip [2021-11-12 23:43:43,881 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-12 23:43:43,881 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-12 23:43:43,881 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-12 23:43:43,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-12 23:43:43,882 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-12 23:43:43,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-12 23:43:43,882 INFO L130 BoogieDeclarations]: Found specification of procedure irda_device_txqueue_empty [2021-11-12 23:43:43,882 INFO L138 BoogieDeclarations]: Found implementation of procedure irda_device_txqueue_empty [2021-11-12 23:43:43,882 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_byte [2021-11-12 23:43:43,882 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_byte [2021-11-12 23:43:43,883 INFO L130 BoogieDeclarations]: Found specification of procedure Sdelay [2021-11-12 23:43:43,883 INFO L138 BoogieDeclarations]: Found implementation of procedure Sdelay [2021-11-12 23:43:43,883 INFO L130 BoogieDeclarations]: Found specification of procedure SetSIR [2021-11-12 23:43:43,883 INFO L138 BoogieDeclarations]: Found implementation of procedure SetSIR [2021-11-12 23:43:43,883 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-12 23:43:43,883 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-12 23:43:43,884 INFO L130 BoogieDeclarations]: Found specification of procedure SetMaxRxPacketSize [2021-11-12 23:43:43,884 INFO L138 BoogieDeclarations]: Found implementation of procedure SetMaxRxPacketSize [2021-11-12 23:43:43,884 INFO L130 BoogieDeclarations]: Found specification of procedure GetRecvByte [2021-11-12 23:43:43,884 INFO L138 BoogieDeclarations]: Found implementation of procedure GetRecvByte [2021-11-12 23:43:43,884 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-12 23:43:43,884 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-12 23:43:43,885 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:43:43,885 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-12 23:43:43,885 INFO L130 BoogieDeclarations]: Found specification of procedure hwreset [2021-11-12 23:43:43,885 INFO L138 BoogieDeclarations]: Found implementation of procedure hwreset [2021-11-12 23:43:43,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-12 23:43:43,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-12 23:43:43,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-12 23:43:43,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-12 23:43:43,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-12 23:43:43,886 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_byte [2021-11-12 23:43:43,886 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_byte [2021-11-12 23:43:43,886 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-12 23:43:43,886 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-12 23:43:43,887 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2021-11-12 23:43:43,887 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2021-11-12 23:43:43,887 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-12 23:43:43,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-12 23:43:43,887 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-11-12 23:43:43,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-11-12 23:43:43,887 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-12 23:43:43,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-12 23:43:43,888 INFO L130 BoogieDeclarations]: Found specification of procedure via_ircc_dma_xmit [2021-11-12 23:43:43,888 INFO L138 BoogieDeclarations]: Found implementation of procedure via_ircc_dma_xmit [2021-11-12 23:43:43,888 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2021-11-12 23:43:43,888 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2021-11-12 23:43:43,888 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2021-11-12 23:43:43,889 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2021-11-12 23:43:43,889 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-12 23:43:43,889 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-12 23:43:43,889 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-12 23:43:43,889 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-12 23:43:43,889 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~C_INT [2021-11-12 23:43:43,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~C_INT [2021-11-12 23:43:43,890 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2021-11-12 23:43:43,890 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2021-11-12 23:43:43,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-12 23:43:43,890 INFO L130 BoogieDeclarations]: Found specification of procedure net_ratelimit [2021-11-12 23:43:43,890 INFO L138 BoogieDeclarations]: Found implementation of procedure net_ratelimit [2021-11-12 23:43:43,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-12 23:43:43,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-12 23:43:43,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-12 23:43:43,891 INFO L130 BoogieDeclarations]: Found specification of procedure SetSendByte [2021-11-12 23:43:43,891 INFO L138 BoogieDeclarations]: Found implementation of procedure SetSendByte [2021-11-12 23:43:43,891 INFO L130 BoogieDeclarations]: Found specification of procedure dev_alloc_skb [2021-11-12 23:43:43,891 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_alloc_skb [2021-11-12 23:43:43,891 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-12 23:43:43,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-12 23:43:43,892 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_via_ircc_cb [2021-11-12 23:43:43,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_via_ircc_cb [2021-11-12 23:43:43,892 INFO L130 BoogieDeclarations]: Found specification of procedure SetSendPreambleCount [2021-11-12 23:43:43,892 INFO L138 BoogieDeclarations]: Found implementation of procedure SetSendPreambleCount [2021-11-12 23:43:43,892 INFO L130 BoogieDeclarations]: Found specification of procedure InitCard [2021-11-12 23:43:43,893 INFO L138 BoogieDeclarations]: Found implementation of procedure InitCard [2021-11-12 23:43:43,893 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-12 23:43:43,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-12 23:43:43,893 INFO L130 BoogieDeclarations]: Found specification of procedure SetTimer [2021-11-12 23:43:43,893 INFO L138 BoogieDeclarations]: Found implementation of procedure SetTimer [2021-11-12 23:43:43,893 INFO L130 BoogieDeclarations]: Found specification of procedure ActClk [2021-11-12 23:43:43,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ActClk [2021-11-12 23:43:43,894 INFO L130 BoogieDeclarations]: Found specification of procedure request_dma [2021-11-12 23:43:43,894 INFO L138 BoogieDeclarations]: Found implementation of procedure request_dma [2021-11-12 23:43:43,894 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2021-11-12 23:43:43,894 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2021-11-12 23:43:43,894 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_mac_header [2021-11-12 23:43:43,894 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_mac_header [2021-11-12 23:43:43,894 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-12 23:43:43,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-12 23:43:43,895 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_to_linear_data [2021-11-12 23:43:43,895 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_to_linear_data [2021-11-12 23:43:45,219 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-12 23:44:30,864 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-12 23:44:33,143 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:44:33,143 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-12 23:44:33,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:44:33 BoogieIcfgContainer [2021-11-12 23:44:33,149 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:44:33,151 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:44:33,151 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:44:33,154 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:44:33,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:43:38" (1/3) ... [2021-11-12 23:44:33,155 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26b9a1d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:44:33, skipping insertion in model container [2021-11-12 23:44:33,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:43:42" (2/3) ... [2021-11-12 23:44:33,156 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26b9a1d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:44:33, skipping insertion in model container [2021-11-12 23:44:33,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:44:33" (3/3) ... [2021-11-12 23:44:33,157 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-irda-via-ircc.cil.i [2021-11-12 23:44:33,163 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:44:33,163 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 23:44:33,229 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:44:33,237 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 [2021-11-12 23:44:33,237 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 23:44:33,309 INFO L276 IsEmpty]: Start isEmpty. Operand has 1916 states, 1164 states have (on average 1.2706185567010309) internal successors, (1479), 1188 states have internal predecessors, (1479), 660 states have call successors, (660), 92 states have call predecessors, (660), 91 states have return successors, (656), 644 states have call predecessors, (656), 656 states have call successors, (656) [2021-11-12 23:44:33,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-11-12 23:44:33,360 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:44:33,362 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:44:33,362 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:44:33,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:44:33,373 INFO L85 PathProgramCache]: Analyzing trace with hash 468133967, now seen corresponding path program 1 times [2021-11-12 23:44:33,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:44:33,399 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [545298482] [2021-11-12 23:44:33,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:44:33,400 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:44:33,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:44:33,404 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:44:33,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 23:44:40,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:44:40,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 2033 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:44:40,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:44:41,165 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2021-11-12 23:44:41,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:44:41,755 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2021-11-12 23:44:41,756 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:44:41,756 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [545298482] [2021-11-12 23:44:41,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [545298482] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:44:41,757 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:44:41,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:44:41,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765181689] [2021-11-12 23:44:41,760 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:44:41,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:44:41,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:44:41,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:44:41,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:44:41,800 INFO L87 Difference]: Start difference. First operand has 1916 states, 1164 states have (on average 1.2706185567010309) internal successors, (1479), 1188 states have internal predecessors, (1479), 660 states have call successors, (660), 92 states have call predecessors, (660), 91 states have return successors, (656), 644 states have call predecessors, (656), 656 states have call successors, (656) Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 4 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) [2021-11-12 23:44:44,174 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:44:51,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:44:51,722 INFO L93 Difference]: Finished difference Result 6789 states and 9976 transitions. [2021-11-12 23:44:51,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:44:51,728 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 4 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) Word has length 162 [2021-11-12 23:44:51,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:44:51,818 INFO L225 Difference]: With dead ends: 6789 [2021-11-12 23:44:51,818 INFO L226 Difference]: Without dead ends: 4774 [2021-11-12 23:44:51,842 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 320 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:44:51,845 INFO L933 BasicCegarLoop]: 3951 mSDtfsCounter, 5474 mSDsluCounter, 3848 mSDsCounter, 0 mSdLazyCounter, 1091 mSolverCounterSat, 1094 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8383.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5474 SdHoareTripleChecker+Valid, 7799 SdHoareTripleChecker+Invalid, 2186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 65.69ms SdHoareTripleChecker+Time, 1094 IncrementalHoareTripleChecker+Valid, 1091 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9213.17ms IncrementalHoareTripleChecker+Time [2021-11-12 23:44:51,846 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5474 Valid, 7799 Invalid, 2186 Unknown, 0 Unchecked, 65.69ms Time], IncrementalHoareTripleChecker [1094 Valid, 1091 Invalid, 1 Unknown, 0 Unchecked, 9213.17ms Time] [2021-11-12 23:44:51,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4774 states. [2021-11-12 23:44:52,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4774 to 4766. [2021-11-12 23:44:52,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4766 states, 2875 states have (on average 1.2591304347826087) internal successors, (3620), 2944 states have internal predecessors, (3620), 1650 states have call successors, (1650), 242 states have call predecessors, (1650), 240 states have return successors, (1684), 1608 states have call predecessors, (1684), 1650 states have call successors, (1684) [2021-11-12 23:44:52,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4766 states to 4766 states and 6954 transitions. [2021-11-12 23:44:52,445 INFO L78 Accepts]: Start accepts. Automaton has 4766 states and 6954 transitions. Word has length 162 [2021-11-12 23:44:52,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:44:52,447 INFO L470 AbstractCegarLoop]: Abstraction has 4766 states and 6954 transitions. [2021-11-12 23:44:52,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 4 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) [2021-11-12 23:44:52,448 INFO L276 IsEmpty]: Start isEmpty. Operand 4766 states and 6954 transitions. [2021-11-12 23:44:52,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2021-11-12 23:44:52,489 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:44:52,489 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:44:52,547 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 23:44:52,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:44:52,711 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:44:52,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:44:52,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1004376211, now seen corresponding path program 1 times [2021-11-12 23:44:52,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:44:52,721 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [770719972] [2021-11-12 23:44:52,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:44:52,723 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:44:52,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:44:52,724 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:44:52,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 23:44:59,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:44:59,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 2312 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:44:59,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:45:01,066 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2021-11-12 23:45:01,066 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:45:01,933 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2021-11-12 23:45:01,934 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:45:01,934 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [770719972] [2021-11-12 23:45:01,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [770719972] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:45:01,935 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:45:01,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:45:01,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320786175] [2021-11-12 23:45:01,936 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:45:01,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:45:01,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:45:01,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:45:01,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:45:01,940 INFO L87 Difference]: Start difference. First operand 4766 states and 6954 transitions. Second operand has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 4 states have call successors, (48), 3 states have call predecessors, (48), 3 states have return successors, (46), 4 states have call predecessors, (46), 4 states have call successors, (46) [2021-11-12 23:45:04,311 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 [] [2021-11-12 23:45:11,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:45:11,828 INFO L93 Difference]: Finished difference Result 15897 states and 23280 transitions. [2021-11-12 23:45:11,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:45:11,829 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 4 states have call successors, (48), 3 states have call predecessors, (48), 3 states have return successors, (46), 4 states have call predecessors, (46), 4 states have call successors, (46) Word has length 235 [2021-11-12 23:45:11,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:45:11,932 INFO L225 Difference]: With dead ends: 15897 [2021-11-12 23:45:11,932 INFO L226 Difference]: Without dead ends: 11146 [2021-11-12 23:45:11,976 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 466 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:45:11,977 INFO L933 BasicCegarLoop]: 3738 mSDtfsCounter, 4543 mSDsluCounter, 4375 mSDsCounter, 0 mSdLazyCounter, 1351 mSolverCounterSat, 40 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8560.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4543 SdHoareTripleChecker+Valid, 8113 SdHoareTripleChecker+Invalid, 1392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 45.47ms SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1351 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9143.05ms IncrementalHoareTripleChecker+Time [2021-11-12 23:45:11,978 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4543 Valid, 8113 Invalid, 1392 Unknown, 0 Unchecked, 45.47ms Time], IncrementalHoareTripleChecker [40 Valid, 1351 Invalid, 1 Unknown, 0 Unchecked, 9143.05ms Time] [2021-11-12 23:45:11,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11146 states. [2021-11-12 23:45:12,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11146 to 11136. [2021-11-12 23:45:12,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11136 states, 6593 states have (on average 1.2633095707568633) internal successors, (8329), 6753 states have internal predecessors, (8329), 3959 states have call successors, (3959), 587 states have call predecessors, (3959), 583 states have return successors, (3999), 3861 states have call predecessors, (3999), 3959 states have call successors, (3999) [2021-11-12 23:45:12,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11136 states to 11136 states and 16287 transitions. [2021-11-12 23:45:12,924 INFO L78 Accepts]: Start accepts. Automaton has 11136 states and 16287 transitions. Word has length 235 [2021-11-12 23:45:12,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:45:12,925 INFO L470 AbstractCegarLoop]: Abstraction has 11136 states and 16287 transitions. [2021-11-12 23:45:12,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 4 states have call successors, (48), 3 states have call predecessors, (48), 3 states have return successors, (46), 4 states have call predecessors, (46), 4 states have call successors, (46) [2021-11-12 23:45:12,926 INFO L276 IsEmpty]: Start isEmpty. Operand 11136 states and 16287 transitions. [2021-11-12 23:45:12,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2021-11-12 23:45:12,964 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:45:12,965 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 7, 7, 7, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:45:13,017 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-12 23:45:13,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:45:13,191 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:45:13,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:45:13,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1100687577, now seen corresponding path program 1 times [2021-11-12 23:45:13,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:45:13,195 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1983123873] [2021-11-12 23:45:13,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:45:13,196 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:45:13,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:45:13,197 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:45:13,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 23:45:19,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:45:19,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 2451 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 23:45:19,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:45:21,171 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 141 proven. 3 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2021-11-12 23:45:21,171 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:45:22,574 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2021-11-12 23:45:22,575 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:45:22,575 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1983123873] [2021-11-12 23:45:22,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1983123873] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:45:22,576 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1356578333] [2021-11-12 23:45:22,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:45:22,577 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:45:22,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:45:22,587 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:45:22,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-11-12 23:45:25,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:45:25,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 2451 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:45:25,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:45:26,894 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 178 proven. 0 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2021-11-12 23:45:26,895 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:45:28,222 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 360 trivial. 0 not checked. [2021-11-12 23:45:28,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1356578333] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:45:28,222 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-12 23:45:28,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [8, 8] total 15 [2021-11-12 23:45:28,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823943257] [2021-11-12 23:45:28,224 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:45:28,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:45:28,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:45:28,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:45:28,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-11-12 23:45:28,226 INFO L87 Difference]: Start difference. First operand 11136 states and 16287 transitions. Second operand has 4 states, 4 states have (on average 50.25) internal successors, (201), 4 states have internal predecessors, (201), 4 states have call successors, (62), 3 states have call predecessors, (62), 4 states have return successors, (60), 4 states have call predecessors, (60), 4 states have call successors, (60) [2021-11-12 23:45:41,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:45:41,734 INFO L93 Difference]: Finished difference Result 34150 states and 50229 transitions. [2021-11-12 23:45:41,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:45:41,735 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 50.25) internal successors, (201), 4 states have internal predecessors, (201), 4 states have call successors, (62), 3 states have call predecessors, (62), 4 states have return successors, (60), 4 states have call predecessors, (60), 4 states have call successors, (60) Word has length 297 [2021-11-12 23:45:41,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:45:41,914 INFO L225 Difference]: With dead ends: 34150 [2021-11-12 23:45:41,915 INFO L226 Difference]: Without dead ends: 23029 [2021-11-12 23:45:42,009 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1184 GetRequests, 1171 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-11-12 23:45:42,010 INFO L933 BasicCegarLoop]: 5863 mSDtfsCounter, 5254 mSDsluCounter, 4508 mSDsCounter, 0 mSdLazyCounter, 2710 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11241.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5254 SdHoareTripleChecker+Valid, 10371 SdHoareTripleChecker+Invalid, 2759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 51.36ms SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 2710 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12346.46ms IncrementalHoareTripleChecker+Time [2021-11-12 23:45:42,010 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5254 Valid, 10371 Invalid, 2759 Unknown, 0 Unchecked, 51.36ms Time], IncrementalHoareTripleChecker [49 Valid, 2710 Invalid, 0 Unknown, 0 Unchecked, 12346.46ms Time] [2021-11-12 23:45:42,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23029 states. [2021-11-12 23:45:43,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23029 to 23027. [2021-11-12 23:45:43,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23027 states, 13595 states have (on average 1.246487679293858) internal successors, (16946), 13923 states have internal predecessors, (16946), 8215 states have call successors, (8215), 1225 states have call predecessors, (8215), 1216 states have return successors, (8301), 8015 states have call predecessors, (8301), 8215 states have call successors, (8301) [2021-11-12 23:45:43,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23027 states to 23027 states and 33462 transitions. [2021-11-12 23:45:43,976 INFO L78 Accepts]: Start accepts. Automaton has 23027 states and 33462 transitions. Word has length 297 [2021-11-12 23:45:43,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:45:43,977 INFO L470 AbstractCegarLoop]: Abstraction has 23027 states and 33462 transitions. [2021-11-12 23:45:43,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.25) internal successors, (201), 4 states have internal predecessors, (201), 4 states have call successors, (62), 3 states have call predecessors, (62), 4 states have return successors, (60), 4 states have call predecessors, (60), 4 states have call successors, (60) [2021-11-12 23:45:43,978 INFO L276 IsEmpty]: Start isEmpty. Operand 23027 states and 33462 transitions. [2021-11-12 23:45:44,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2021-11-12 23:45:44,065 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:45:44,066 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 7, 7, 7, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:45:44,079 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-11-12 23:45:44,313 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-12 23:45:44,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:45:44,479 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:45:44,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:45:44,480 INFO L85 PathProgramCache]: Analyzing trace with hash -793646309, now seen corresponding path program 1 times [2021-11-12 23:45:44,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:45:44,483 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1174112867] [2021-11-12 23:45:44,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:45:44,483 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:45:44,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:45:44,484 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:45:44,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-12 23:45:50,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:45:51,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 2451 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 23:45:51,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:45:52,291 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 141 proven. 3 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2021-11-12 23:45:52,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:45:53,594 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2021-11-12 23:45:53,594 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:45:53,594 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1174112867] [2021-11-12 23:45:53,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1174112867] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:45:53,595 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [132628218] [2021-11-12 23:45:53,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:45:53,595 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:45:53,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:45:53,596 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:45:53,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-11-12 23:45:55,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:45:56,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 2451 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:45:56,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:45:58,293 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2021-11-12 23:45:58,293 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:45:59,685 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2021-11-12 23:45:59,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [132628218] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:45:59,685 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-12 23:45:59,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [8, 8] total 16 [2021-11-12 23:45:59,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767086332] [2021-11-12 23:45:59,686 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:45:59,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:45:59,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:45:59,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:45:59,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2021-11-12 23:45:59,688 INFO L87 Difference]: Start difference. First operand 23027 states and 33462 transitions. Second operand has 5 states, 5 states have (on average 55.0) internal successors, (275), 5 states have internal predecessors, (275), 3 states have call successors, (68), 3 states have call predecessors, (68), 4 states have return successors, (64), 4 states have call predecessors, (64), 3 states have call successors, (64) [2021-11-12 23:46:01,976 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:46:08,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:46:08,664 INFO L93 Difference]: Finished difference Result 45210 states and 65787 transitions. [2021-11-12 23:46:08,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:46:08,666 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 55.0) internal successors, (275), 5 states have internal predecessors, (275), 3 states have call successors, (68), 3 states have call predecessors, (68), 4 states have return successors, (64), 4 states have call predecessors, (64), 3 states have call successors, (64) Word has length 297 [2021-11-12 23:46:08,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:46:08,832 INFO L225 Difference]: With dead ends: 45210 [2021-11-12 23:46:08,832 INFO L226 Difference]: Without dead ends: 23027 [2021-11-12 23:46:08,955 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1184 GetRequests, 1170 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2021-11-12 23:46:08,956 INFO L933 BasicCegarLoop]: 2724 mSDtfsCounter, 2582 mSDsluCounter, 1451 mSDsCounter, 0 mSdLazyCounter, 1274 mSolverCounterSat, 45 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7285.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2582 SdHoareTripleChecker+Valid, 4175 SdHoareTripleChecker+Invalid, 1320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.27ms SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1274 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7855.88ms IncrementalHoareTripleChecker+Time [2021-11-12 23:46:08,957 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2582 Valid, 4175 Invalid, 1320 Unknown, 0 Unchecked, 17.27ms Time], IncrementalHoareTripleChecker [45 Valid, 1274 Invalid, 1 Unknown, 0 Unchecked, 7855.88ms Time] [2021-11-12 23:46:08,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23027 states. [2021-11-12 23:46:11,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23027 to 23027. [2021-11-12 23:46:11,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23027 states, 13595 states have (on average 1.2457521147480692) internal successors, (16936), 13923 states have internal predecessors, (16936), 8215 states have call successors, (8215), 1225 states have call predecessors, (8215), 1216 states have return successors, (8301), 8015 states have call predecessors, (8301), 8215 states have call successors, (8301) [2021-11-12 23:46:11,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23027 states to 23027 states and 33452 transitions. [2021-11-12 23:46:11,367 INFO L78 Accepts]: Start accepts. Automaton has 23027 states and 33452 transitions. Word has length 297 [2021-11-12 23:46:11,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:46:11,369 INFO L470 AbstractCegarLoop]: Abstraction has 23027 states and 33452 transitions. [2021-11-12 23:46:11,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 55.0) internal successors, (275), 5 states have internal predecessors, (275), 3 states have call successors, (68), 3 states have call predecessors, (68), 4 states have return successors, (64), 4 states have call predecessors, (64), 3 states have call successors, (64) [2021-11-12 23:46:11,369 INFO L276 IsEmpty]: Start isEmpty. Operand 23027 states and 33452 transitions. [2021-11-12 23:46:11,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2021-11-12 23:46:11,432 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:46:11,432 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 7, 7, 7, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:46:11,449 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2021-11-12 23:46:11,698 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-12 23:46:11,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:46:11,846 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:46:11,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:46:11,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1535933466, now seen corresponding path program 1 times [2021-11-12 23:46:11,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:46:11,853 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1332866259] [2021-11-12 23:46:11,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:46:11,853 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:46:11,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:46:11,854 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:46:11,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-12 23:46:18,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:46:18,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 2452 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 23:46:18,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:46:19,402 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 141 proven. 3 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2021-11-12 23:46:19,402 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:46:20,617 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2021-11-12 23:46:20,617 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:46:20,617 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1332866259] [2021-11-12 23:46:20,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1332866259] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:46:20,618 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1951062217] [2021-11-12 23:46:20,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:46:20,618 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:46:20,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:46:20,623 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:46:20,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-12 23:46:22,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:46:23,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 2452 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:46:23,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:46:25,445 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2021-11-12 23:46:25,445 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:46:26,848 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2021-11-12 23:46:26,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1951062217] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:46:26,849 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-12 23:46:26,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [8, 8] total 16 [2021-11-12 23:46:26,849 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677885248] [2021-11-12 23:46:26,850 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:46:26,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:46:26,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:46:26,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:46:26,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2021-11-12 23:46:26,852 INFO L87 Difference]: Start difference. First operand 23027 states and 33452 transitions. Second operand has 5 states, 5 states have (on average 55.4) internal successors, (277), 5 states have internal predecessors, (277), 3 states have call successors, (68), 3 states have call predecessors, (68), 4 states have return successors, (64), 4 states have call predecessors, (64), 3 states have call successors, (64) [2021-11-12 23:46:29,258 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 [] [2021-11-12 23:46:35,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:46:35,954 INFO L93 Difference]: Finished difference Result 45210 states and 65767 transitions. [2021-11-12 23:46:35,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:46:35,954 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 55.4) internal successors, (277), 5 states have internal predecessors, (277), 3 states have call successors, (68), 3 states have call predecessors, (68), 4 states have return successors, (64), 4 states have call predecessors, (64), 3 states have call successors, (64) Word has length 298 [2021-11-12 23:46:35,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:46:36,114 INFO L225 Difference]: With dead ends: 45210 [2021-11-12 23:46:36,114 INFO L226 Difference]: Without dead ends: 23027 [2021-11-12 23:46:36,244 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1188 GetRequests, 1174 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2021-11-12 23:46:36,247 INFO L933 BasicCegarLoop]: 2723 mSDtfsCounter, 2581 mSDsluCounter, 1450 mSDsCounter, 0 mSdLazyCounter, 1274 mSolverCounterSat, 45 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7416.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2581 SdHoareTripleChecker+Valid, 4173 SdHoareTripleChecker+Invalid, 1320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.68ms SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1274 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7969.85ms IncrementalHoareTripleChecker+Time [2021-11-12 23:46:36,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2581 Valid, 4173 Invalid, 1320 Unknown, 0 Unchecked, 15.68ms Time], IncrementalHoareTripleChecker [45 Valid, 1274 Invalid, 1 Unknown, 0 Unchecked, 7969.85ms Time] [2021-11-12 23:46:36,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23027 states. [2021-11-12 23:46:38,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23027 to 23027. [2021-11-12 23:46:38,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23027 states, 13595 states have (on average 1.2450165502022803) internal successors, (16926), 13923 states have internal predecessors, (16926), 8215 states have call successors, (8215), 1225 states have call predecessors, (8215), 1216 states have return successors, (8301), 8015 states have call predecessors, (8301), 8215 states have call successors, (8301) [2021-11-12 23:46:38,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23027 states to 23027 states and 33442 transitions. [2021-11-12 23:46:38,281 INFO L78 Accepts]: Start accepts. Automaton has 23027 states and 33442 transitions. Word has length 298 [2021-11-12 23:46:38,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:46:38,282 INFO L470 AbstractCegarLoop]: Abstraction has 23027 states and 33442 transitions. [2021-11-12 23:46:38,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 55.4) internal successors, (277), 5 states have internal predecessors, (277), 3 states have call successors, (68), 3 states have call predecessors, (68), 4 states have return successors, (64), 4 states have call predecessors, (64), 3 states have call successors, (64) [2021-11-12 23:46:38,283 INFO L276 IsEmpty]: Start isEmpty. Operand 23027 states and 33442 transitions. [2021-11-12 23:46:38,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2021-11-12 23:46:38,331 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:46:38,332 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 7, 7, 7, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:46:38,388 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-12 23:46:38,574 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-11-12 23:46:38,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-12 23:46:38,755 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:46:38,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:46:38,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1337485047, now seen corresponding path program 1 times [2021-11-12 23:46:38,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:46:38,759 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [282286491] [2021-11-12 23:46:38,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:46:38,759 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:46:38,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:46:38,760 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:46:38,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-12 23:46:44,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:46:45,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 2453 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 23:46:45,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:46:46,360 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 141 proven. 3 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2021-11-12 23:46:46,360 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:46:47,663 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2021-11-12 23:46:47,663 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:46:47,663 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [282286491] [2021-11-12 23:46:47,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [282286491] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:46:47,664 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [654067037] [2021-11-12 23:46:47,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:46:47,665 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:46:47,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:46:47,666 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:46:47,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-12 23:46:49,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:46:49,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 2453 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:46:49,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:46:51,954 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2021-11-12 23:46:51,955 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:46:53,369 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2021-11-12 23:46:53,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [654067037] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:46:53,369 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-12 23:46:53,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [8, 8] total 16 [2021-11-12 23:46:53,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302882394] [2021-11-12 23:46:53,370 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:46:53,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:46:53,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:46:53,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:46:53,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2021-11-12 23:46:53,373 INFO L87 Difference]: Start difference. First operand 23027 states and 33442 transitions. Second operand has 5 states, 5 states have (on average 55.8) internal successors, (279), 5 states have internal predecessors, (279), 3 states have call successors, (68), 3 states have call predecessors, (68), 4 states have return successors, (64), 4 states have call predecessors, (64), 3 states have call successors, (64) [2021-11-12 23:46:55,738 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:47:03,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:47:03,041 INFO L93 Difference]: Finished difference Result 45210 states and 65747 transitions. [2021-11-12 23:47:03,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:47:03,042 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 55.8) internal successors, (279), 5 states have internal predecessors, (279), 3 states have call successors, (68), 3 states have call predecessors, (68), 4 states have return successors, (64), 4 states have call predecessors, (64), 3 states have call successors, (64) Word has length 299 [2021-11-12 23:47:03,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:47:03,227 INFO L225 Difference]: With dead ends: 45210 [2021-11-12 23:47:03,227 INFO L226 Difference]: Without dead ends: 23027 [2021-11-12 23:47:03,365 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1192 GetRequests, 1178 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2021-11-12 23:47:03,367 INFO L933 BasicCegarLoop]: 2722 mSDtfsCounter, 3895 mSDsluCounter, 1449 mSDsCounter, 0 mSdLazyCounter, 1274 mSolverCounterSat, 1252 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7513.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3895 SdHoareTripleChecker+Valid, 4171 SdHoareTripleChecker+Invalid, 2527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.45ms SdHoareTripleChecker+Time, 1252 IncrementalHoareTripleChecker+Valid, 1274 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8143.70ms IncrementalHoareTripleChecker+Time [2021-11-12 23:47:03,367 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3895 Valid, 4171 Invalid, 2527 Unknown, 0 Unchecked, 20.45ms Time], IncrementalHoareTripleChecker [1252 Valid, 1274 Invalid, 1 Unknown, 0 Unchecked, 8143.70ms Time] [2021-11-12 23:47:03,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23027 states. [2021-11-12 23:47:05,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23027 to 23027. [2021-11-12 23:47:05,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23027 states, 13595 states have (on average 1.2442809856564914) internal successors, (16916), 13923 states have internal predecessors, (16916), 8215 states have call successors, (8215), 1225 states have call predecessors, (8215), 1216 states have return successors, (8301), 8015 states have call predecessors, (8301), 8215 states have call successors, (8301) [2021-11-12 23:47:05,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23027 states to 23027 states and 33432 transitions. [2021-11-12 23:47:05,480 INFO L78 Accepts]: Start accepts. Automaton has 23027 states and 33432 transitions. Word has length 299 [2021-11-12 23:47:05,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:47:05,481 INFO L470 AbstractCegarLoop]: Abstraction has 23027 states and 33432 transitions. [2021-11-12 23:47:05,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 55.8) internal successors, (279), 5 states have internal predecessors, (279), 3 states have call successors, (68), 3 states have call predecessors, (68), 4 states have return successors, (64), 4 states have call predecessors, (64), 3 states have call successors, (64) [2021-11-12 23:47:05,482 INFO L276 IsEmpty]: Start isEmpty. Operand 23027 states and 33432 transitions. [2021-11-12 23:47:05,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2021-11-12 23:47:05,537 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:47:05,537 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 7, 7, 7, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:47:05,554 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-11-12 23:47:05,796 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-12 23:47:05,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:47:05,954 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:47:05,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:47:05,955 INFO L85 PathProgramCache]: Analyzing trace with hash 333662338, now seen corresponding path program 1 times [2021-11-12 23:47:05,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:47:05,959 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [814564410] [2021-11-12 23:47:05,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:47:05,959 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:47:05,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:47:05,960 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:47:05,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-12 23:47:12,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:47:12,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 2454 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 23:47:12,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:47:13,780 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 141 proven. 3 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2021-11-12 23:47:13,781 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:47:15,210 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2021-11-12 23:47:15,211 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:47:15,211 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [814564410] [2021-11-12 23:47:15,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [814564410] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:47:15,211 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1021915832] [2021-11-12 23:47:15,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:47:15,211 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:47:15,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:47:15,215 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:47:15,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-12 23:47:17,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:47:17,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 2454 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:47:17,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:47:19,755 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2021-11-12 23:47:19,756 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:47:21,067 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2021-11-12 23:47:21,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1021915832] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:47:21,067 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-12 23:47:21,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [8, 8] total 16 [2021-11-12 23:47:21,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957073397] [2021-11-12 23:47:21,068 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:47:21,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:47:21,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:47:21,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:47:21,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2021-11-12 23:47:21,070 INFO L87 Difference]: Start difference. First operand 23027 states and 33432 transitions. Second operand has 5 states, 5 states have (on average 56.2) internal successors, (281), 5 states have internal predecessors, (281), 3 states have call successors, (68), 3 states have call predecessors, (68), 4 states have return successors, (64), 4 states have call predecessors, (64), 3 states have call successors, (64) [2021-11-12 23:47:23,370 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:47:29,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:47:29,724 INFO L93 Difference]: Finished difference Result 45210 states and 65727 transitions. [2021-11-12 23:47:29,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:47:29,725 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 56.2) internal successors, (281), 5 states have internal predecessors, (281), 3 states have call successors, (68), 3 states have call predecessors, (68), 4 states have return successors, (64), 4 states have call predecessors, (64), 3 states have call successors, (64) Word has length 300 [2021-11-12 23:47:29,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:47:29,829 INFO L225 Difference]: With dead ends: 45210 [2021-11-12 23:47:29,829 INFO L226 Difference]: Without dead ends: 23027 [2021-11-12 23:47:29,930 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1196 GetRequests, 1182 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2021-11-12 23:47:29,931 INFO L933 BasicCegarLoop]: 2721 mSDtfsCounter, 2579 mSDsluCounter, 1448 mSDsCounter, 0 mSdLazyCounter, 1274 mSolverCounterSat, 45 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6943.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2579 SdHoareTripleChecker+Valid, 4169 SdHoareTripleChecker+Invalid, 1320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.85ms SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1274 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7444.98ms IncrementalHoareTripleChecker+Time [2021-11-12 23:47:29,932 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2579 Valid, 4169 Invalid, 1320 Unknown, 0 Unchecked, 13.85ms Time], IncrementalHoareTripleChecker [45 Valid, 1274 Invalid, 1 Unknown, 0 Unchecked, 7444.98ms Time] [2021-11-12 23:47:29,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23027 states. [2021-11-12 23:47:31,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23027 to 23027. [2021-11-12 23:47:31,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23027 states, 13595 states have (on average 1.2435454211107024) internal successors, (16906), 13923 states have internal predecessors, (16906), 8215 states have call successors, (8215), 1225 states have call predecessors, (8215), 1216 states have return successors, (8301), 8015 states have call predecessors, (8301), 8215 states have call successors, (8301) [2021-11-12 23:47:31,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23027 states to 23027 states and 33422 transitions. [2021-11-12 23:47:31,728 INFO L78 Accepts]: Start accepts. Automaton has 23027 states and 33422 transitions. Word has length 300 [2021-11-12 23:47:31,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:47:31,729 INFO L470 AbstractCegarLoop]: Abstraction has 23027 states and 33422 transitions. [2021-11-12 23:47:31,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 56.2) internal successors, (281), 5 states have internal predecessors, (281), 3 states have call successors, (68), 3 states have call predecessors, (68), 4 states have return successors, (64), 4 states have call predecessors, (64), 3 states have call successors, (64) [2021-11-12 23:47:31,729 INFO L276 IsEmpty]: Start isEmpty. Operand 23027 states and 33422 transitions. [2021-11-12 23:47:31,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2021-11-12 23:47:31,785 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:47:31,786 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 7, 7, 7, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:47:31,826 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-11-12 23:47:32,005 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2021-11-12 23:47:32,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-12 23:47:32,194 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:47:32,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:47:32,195 INFO L85 PathProgramCache]: Analyzing trace with hash -605553965, now seen corresponding path program 1 times [2021-11-12 23:47:32,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:47:32,199 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1591655162] [2021-11-12 23:47:32,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:47:32,199 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:47:32,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:47:32,200 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:47:32,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-12 23:47:38,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:47:38,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 2455 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 23:47:38,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:47:39,958 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 141 proven. 3 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2021-11-12 23:47:39,958 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:47:41,352 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2021-11-12 23:47:41,352 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:47:41,352 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1591655162] [2021-11-12 23:47:41,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1591655162] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:47:41,352 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1709046940] [2021-11-12 23:47:41,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:47:41,353 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:47:41,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:47:41,354 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:47:41,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-12 23:47:43,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:47:43,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 2455 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:47:43,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:47:46,387 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2021-11-12 23:47:46,387 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:47:48,041 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2021-11-12 23:47:48,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1709046940] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:47:48,042 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-12 23:47:48,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [8, 8] total 16 [2021-11-12 23:47:48,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651508992] [2021-11-12 23:47:48,043 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:47:48,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:47:48,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:47:48,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:47:48,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2021-11-12 23:47:48,044 INFO L87 Difference]: Start difference. First operand 23027 states and 33422 transitions. Second operand has 5 states, 5 states have (on average 56.6) internal successors, (283), 5 states have internal predecessors, (283), 3 states have call successors, (68), 3 states have call predecessors, (68), 4 states have return successors, (64), 4 states have call predecessors, (64), 3 states have call successors, (64) [2021-11-12 23:47:50,398 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.35s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:47:57,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:47:57,424 INFO L93 Difference]: Finished difference Result 45210 states and 65707 transitions. [2021-11-12 23:47:57,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:47:57,424 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 56.6) internal successors, (283), 5 states have internal predecessors, (283), 3 states have call successors, (68), 3 states have call predecessors, (68), 4 states have return successors, (64), 4 states have call predecessors, (64), 3 states have call successors, (64) Word has length 301 [2021-11-12 23:47:57,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:47:57,544 INFO L225 Difference]: With dead ends: 45210 [2021-11-12 23:47:57,544 INFO L226 Difference]: Without dead ends: 23027 [2021-11-12 23:47:57,724 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1200 GetRequests, 1186 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2021-11-12 23:47:57,725 INFO L933 BasicCegarLoop]: 2720 mSDtfsCounter, 2578 mSDsluCounter, 1447 mSDsCounter, 0 mSdLazyCounter, 1274 mSolverCounterSat, 45 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7296.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2578 SdHoareTripleChecker+Valid, 4167 SdHoareTripleChecker+Invalid, 1320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.74ms SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1274 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7833.24ms IncrementalHoareTripleChecker+Time [2021-11-12 23:47:57,725 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2578 Valid, 4167 Invalid, 1320 Unknown, 0 Unchecked, 14.74ms Time], IncrementalHoareTripleChecker [45 Valid, 1274 Invalid, 1 Unknown, 0 Unchecked, 7833.24ms Time] [2021-11-12 23:47:57,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23027 states. [2021-11-12 23:47:59,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23027 to 23027. [2021-11-12 23:47:59,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23027 states, 13595 states have (on average 1.2428098565649135) internal successors, (16896), 13923 states have internal predecessors, (16896), 8215 states have call successors, (8215), 1225 states have call predecessors, (8215), 1216 states have return successors, (8301), 8015 states have call predecessors, (8301), 8215 states have call successors, (8301) [2021-11-12 23:47:59,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23027 states to 23027 states and 33412 transitions. [2021-11-12 23:47:59,284 INFO L78 Accepts]: Start accepts. Automaton has 23027 states and 33412 transitions. Word has length 301 [2021-11-12 23:47:59,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:47:59,285 INFO L470 AbstractCegarLoop]: Abstraction has 23027 states and 33412 transitions. [2021-11-12 23:47:59,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 56.6) internal successors, (283), 5 states have internal predecessors, (283), 3 states have call successors, (68), 3 states have call predecessors, (68), 4 states have return successors, (64), 4 states have call predecessors, (64), 3 states have call successors, (64) [2021-11-12 23:47:59,286 INFO L276 IsEmpty]: Start isEmpty. Operand 23027 states and 33412 transitions. [2021-11-12 23:47:59,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2021-11-12 23:47:59,317 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:47:59,317 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 7, 7, 7, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:47:59,356 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-12 23:47:59,530 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2021-11-12 23:47:59,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-12 23:47:59,718 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:47:59,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:47:59,719 INFO L85 PathProgramCache]: Analyzing trace with hash 458028318, now seen corresponding path program 1 times [2021-11-12 23:47:59,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:47:59,724 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [874629741] [2021-11-12 23:47:59,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:47:59,724 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:47:59,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:47:59,726 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:47:59,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-12 23:48:05,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:48:06,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 2456 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 23:48:06,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:48:07,238 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 141 proven. 3 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2021-11-12 23:48:07,238 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:48:08,344 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2021-11-12 23:48:08,344 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:48:08,344 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [874629741] [2021-11-12 23:48:08,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [874629741] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:48:08,344 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1599311082] [2021-11-12 23:48:08,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:48:08,344 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:48:08,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:48:08,346 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:48:08,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-12 23:48:10,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:48:10,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 2456 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:48:10,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:48:12,996 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2021-11-12 23:48:12,996 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:48:14,430 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2021-11-12 23:48:14,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1599311082] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:48:14,430 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-12 23:48:14,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [8, 8] total 16 [2021-11-12 23:48:14,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774895242] [2021-11-12 23:48:14,431 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:48:14,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:48:14,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:48:14,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:48:14,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2021-11-12 23:48:14,437 INFO L87 Difference]: Start difference. First operand 23027 states and 33412 transitions. Second operand has 5 states, 5 states have (on average 57.0) internal successors, (285), 5 states have internal predecessors, (285), 3 states have call successors, (68), 3 states have call predecessors, (68), 4 states have return successors, (64), 4 states have call predecessors, (64), 3 states have call successors, (64) [2021-11-12 23:48:16,793 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.35s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:48:24,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:48:24,081 INFO L93 Difference]: Finished difference Result 45210 states and 65687 transitions. [2021-11-12 23:48:24,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:48:24,082 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 57.0) internal successors, (285), 5 states have internal predecessors, (285), 3 states have call successors, (68), 3 states have call predecessors, (68), 4 states have return successors, (64), 4 states have call predecessors, (64), 3 states have call successors, (64) Word has length 302 [2021-11-12 23:48:24,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:48:24,179 INFO L225 Difference]: With dead ends: 45210 [2021-11-12 23:48:24,180 INFO L226 Difference]: Without dead ends: 23027 [2021-11-12 23:48:24,268 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1204 GetRequests, 1190 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2021-11-12 23:48:24,269 INFO L933 BasicCegarLoop]: 2719 mSDtfsCounter, 2577 mSDsluCounter, 1446 mSDsCounter, 0 mSdLazyCounter, 1274 mSolverCounterSat, 45 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7387.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2577 SdHoareTripleChecker+Valid, 4165 SdHoareTripleChecker+Invalid, 1320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.03ms SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1274 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7959.06ms IncrementalHoareTripleChecker+Time [2021-11-12 23:48:24,269 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2577 Valid, 4165 Invalid, 1320 Unknown, 0 Unchecked, 15.03ms Time], IncrementalHoareTripleChecker [45 Valid, 1274 Invalid, 1 Unknown, 0 Unchecked, 7959.06ms Time] [2021-11-12 23:48:24,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23027 states. [2021-11-12 23:48:26,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23027 to 23027. [2021-11-12 23:48:26,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23027 states, 13595 states have (on average 1.2420742920191248) internal successors, (16886), 13923 states have internal predecessors, (16886), 8215 states have call successors, (8215), 1225 states have call predecessors, (8215), 1216 states have return successors, (8301), 8015 states have call predecessors, (8301), 8215 states have call successors, (8301) [2021-11-12 23:48:26,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23027 states to 23027 states and 33402 transitions. [2021-11-12 23:48:26,334 INFO L78 Accepts]: Start accepts. Automaton has 23027 states and 33402 transitions. Word has length 302 [2021-11-12 23:48:26,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:48:26,335 INFO L470 AbstractCegarLoop]: Abstraction has 23027 states and 33402 transitions. [2021-11-12 23:48:26,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.0) internal successors, (285), 5 states have internal predecessors, (285), 3 states have call successors, (68), 3 states have call predecessors, (68), 4 states have return successors, (64), 4 states have call predecessors, (64), 3 states have call successors, (64) [2021-11-12 23:48:26,335 INFO L276 IsEmpty]: Start isEmpty. Operand 23027 states and 33402 transitions. [2021-11-12 23:48:26,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2021-11-12 23:48:26,374 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:48:26,374 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 7, 7, 7, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:48:26,410 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-12 23:48:26,586 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2021-11-12 23:48:26,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-12 23:48:26,776 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:48:26,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:48:26,777 INFO L85 PathProgramCache]: Analyzing trace with hash -816142673, now seen corresponding path program 1 times [2021-11-12 23:48:26,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:48:26,781 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [643683299] [2021-11-12 23:48:26,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:48:26,781 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:48:26,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:48:26,782 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:48:26,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-12 23:48:33,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:48:33,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 2457 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 23:48:33,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:48:34,734 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 141 proven. 3 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2021-11-12 23:48:34,734 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:48:35,957 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2021-11-12 23:48:35,958 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:48:35,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [643683299] [2021-11-12 23:48:35,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [643683299] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:48:35,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [404756617] [2021-11-12 23:48:35,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:48:35,958 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:48:35,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:48:35,959 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:48:35,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-11-12 23:48:38,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:48:38,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 2457 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:48:38,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:48:40,456 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2021-11-12 23:48:40,457 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:48:41,703 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2021-11-12 23:48:41,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [404756617] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:48:41,704 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-12 23:48:41,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [8, 8] total 16 [2021-11-12 23:48:41,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386953455] [2021-11-12 23:48:41,705 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:48:41,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:48:41,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:48:41,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:48:41,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2021-11-12 23:48:41,707 INFO L87 Difference]: Start difference. First operand 23027 states and 33402 transitions. Second operand has 5 states, 5 states have (on average 57.4) internal successors, (287), 5 states have internal predecessors, (287), 3 states have call successors, (68), 3 states have call predecessors, (68), 4 states have return successors, (64), 4 states have call predecessors, (64), 3 states have call successors, (64) [2021-11-12 23:48:44,027 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:48:50,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:48:50,733 INFO L93 Difference]: Finished difference Result 45210 states and 65667 transitions. [2021-11-12 23:48:50,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:48:50,734 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 57.4) internal successors, (287), 5 states have internal predecessors, (287), 3 states have call successors, (68), 3 states have call predecessors, (68), 4 states have return successors, (64), 4 states have call predecessors, (64), 3 states have call successors, (64) Word has length 303 [2021-11-12 23:48:50,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:48:50,828 INFO L225 Difference]: With dead ends: 45210 [2021-11-12 23:48:50,828 INFO L226 Difference]: Without dead ends: 23027 [2021-11-12 23:48:50,907 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1208 GetRequests, 1194 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2021-11-12 23:48:50,908 INFO L933 BasicCegarLoop]: 2718 mSDtfsCounter, 2576 mSDsluCounter, 1445 mSDsCounter, 0 mSdLazyCounter, 1274 mSolverCounterSat, 45 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6919.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2576 SdHoareTripleChecker+Valid, 4163 SdHoareTripleChecker+Invalid, 1320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.69ms SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1274 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7422.64ms IncrementalHoareTripleChecker+Time [2021-11-12 23:48:50,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2576 Valid, 4163 Invalid, 1320 Unknown, 0 Unchecked, 13.69ms Time], IncrementalHoareTripleChecker [45 Valid, 1274 Invalid, 1 Unknown, 0 Unchecked, 7422.64ms Time] [2021-11-12 23:48:50,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23027 states. [2021-11-12 23:48:52,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23027 to 23027. [2021-11-12 23:48:52,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23027 states, 13595 states have (on average 1.2413387274733358) internal successors, (16876), 13923 states have internal predecessors, (16876), 8215 states have call successors, (8215), 1225 states have call predecessors, (8215), 1216 states have return successors, (8301), 8015 states have call predecessors, (8301), 8215 states have call successors, (8301) [2021-11-12 23:48:53,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23027 states to 23027 states and 33392 transitions. [2021-11-12 23:48:53,019 INFO L78 Accepts]: Start accepts. Automaton has 23027 states and 33392 transitions. Word has length 303 [2021-11-12 23:48:53,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:48:53,020 INFO L470 AbstractCegarLoop]: Abstraction has 23027 states and 33392 transitions. [2021-11-12 23:48:53,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.4) internal successors, (287), 5 states have internal predecessors, (287), 3 states have call successors, (68), 3 states have call predecessors, (68), 4 states have return successors, (64), 4 states have call predecessors, (64), 3 states have call successors, (64) [2021-11-12 23:48:53,020 INFO L276 IsEmpty]: Start isEmpty. Operand 23027 states and 33392 transitions. [2021-11-12 23:48:53,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2021-11-12 23:48:53,057 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:48:53,057 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 7, 7, 7, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:48:53,100 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2021-11-12 23:48:53,271 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (19)] Ended with exit code 0 [2021-11-12 23:48:53,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-12 23:48:53,460 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:48:53,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:48:53,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1546221126, now seen corresponding path program 1 times [2021-11-12 23:48:53,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:48:53,465 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [331653350] [2021-11-12 23:48:53,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:48:53,465 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:48:53,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:48:53,466 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:48:53,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-12 23:49:00,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:49:00,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 2458 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 23:49:00,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:49:02,064 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 141 proven. 3 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2021-11-12 23:49:02,065 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:49:03,391 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2021-11-12 23:49:03,392 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:49:03,392 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [331653350] [2021-11-12 23:49:03,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [331653350] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:49:03,392 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [262027511] [2021-11-12 23:49:03,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:49:03,393 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:49:03,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:49:03,394 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:49:03,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-11-12 23:49:05,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:49:05,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 2458 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:49:05,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:49:08,035 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2021-11-12 23:49:08,035 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:49:09,395 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2021-11-12 23:49:09,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [262027511] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:49:09,396 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-12 23:49:09,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [8, 8] total 16 [2021-11-12 23:49:09,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856763940] [2021-11-12 23:49:09,397 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:49:09,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:49:09,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:49:09,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:49:09,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2021-11-12 23:49:09,399 INFO L87 Difference]: Start difference. First operand 23027 states and 33392 transitions. Second operand has 5 states, 5 states have (on average 57.8) internal successors, (289), 5 states have internal predecessors, (289), 3 states have call successors, (68), 3 states have call predecessors, (68), 4 states have return successors, (64), 4 states have call predecessors, (64), 3 states have call successors, (64) [2021-11-12 23:49:11,691 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:49:18,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:49:18,632 INFO L93 Difference]: Finished difference Result 45210 states and 65647 transitions. [2021-11-12 23:49:18,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:49:18,633 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 57.8) internal successors, (289), 5 states have internal predecessors, (289), 3 states have call successors, (68), 3 states have call predecessors, (68), 4 states have return successors, (64), 4 states have call predecessors, (64), 3 states have call successors, (64) Word has length 304 [2021-11-12 23:49:18,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:49:18,741 INFO L225 Difference]: With dead ends: 45210 [2021-11-12 23:49:18,741 INFO L226 Difference]: Without dead ends: 23027 [2021-11-12 23:49:18,826 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1212 GetRequests, 1198 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2021-11-12 23:49:18,827 INFO L933 BasicCegarLoop]: 2717 mSDtfsCounter, 2575 mSDsluCounter, 1444 mSDsCounter, 0 mSdLazyCounter, 1274 mSolverCounterSat, 45 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7025.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2575 SdHoareTripleChecker+Valid, 4161 SdHoareTripleChecker+Invalid, 1320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.19ms SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1274 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7558.80ms IncrementalHoareTripleChecker+Time [2021-11-12 23:49:18,827 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2575 Valid, 4161 Invalid, 1320 Unknown, 0 Unchecked, 14.19ms Time], IncrementalHoareTripleChecker [45 Valid, 1274 Invalid, 1 Unknown, 0 Unchecked, 7558.80ms Time] [2021-11-12 23:49:18,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23027 states. [2021-11-12 23:49:20,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23027 to 23027. [2021-11-12 23:49:20,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23027 states, 13595 states have (on average 1.240603162927547) internal successors, (16866), 13923 states have internal predecessors, (16866), 8215 states have call successors, (8215), 1225 states have call predecessors, (8215), 1216 states have return successors, (8301), 8015 states have call predecessors, (8301), 8215 states have call successors, (8301) [2021-11-12 23:49:20,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23027 states to 23027 states and 33382 transitions. [2021-11-12 23:49:20,745 INFO L78 Accepts]: Start accepts. Automaton has 23027 states and 33382 transitions. Word has length 304 [2021-11-12 23:49:20,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:49:20,746 INFO L470 AbstractCegarLoop]: Abstraction has 23027 states and 33382 transitions. [2021-11-12 23:49:20,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.8) internal successors, (289), 5 states have internal predecessors, (289), 3 states have call successors, (68), 3 states have call predecessors, (68), 4 states have return successors, (64), 4 states have call predecessors, (64), 3 states have call successors, (64) [2021-11-12 23:49:20,746 INFO L276 IsEmpty]: Start isEmpty. Operand 23027 states and 33382 transitions. [2021-11-12 23:49:20,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2021-11-12 23:49:20,776 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:49:20,776 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 7, 7, 7, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:49:20,810 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2021-11-12 23:49:20,988 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2021-11-12 23:49:21,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-12 23:49:21,177 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:49:21,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:49:21,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1705667211, now seen corresponding path program 1 times [2021-11-12 23:49:21,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:49:21,181 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2091689467] [2021-11-12 23:49:21,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:49:21,181 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:49:21,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:49:21,183 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:49:21,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-12 23:49:27,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:49:27,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 2459 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 23:49:27,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:49:28,918 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 141 proven. 3 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2021-11-12 23:49:28,918 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:49:30,208 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2021-11-12 23:49:30,208 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:49:30,208 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2091689467] [2021-11-12 23:49:30,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2091689467] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:49:30,208 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [203581360] [2021-11-12 23:49:30,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:49:30,209 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:49:30,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:49:30,210 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:49:30,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-11-12 23:49:32,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:49:32,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 2459 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:49:32,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:49:34,134 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 166 proven. 0 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2021-11-12 23:49:34,135 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:49:35,108 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 360 trivial. 0 not checked. [2021-11-12 23:49:35,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [203581360] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:49:35,108 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-12 23:49:35,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8, 8] total 15 [2021-11-12 23:49:35,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263863669] [2021-11-12 23:49:35,109 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:49:35,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:49:35,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:49:35,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:49:35,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2021-11-12 23:49:35,110 INFO L87 Difference]: Start difference. First operand 23027 states and 33382 transitions. Second operand has 4 states, 4 states have (on average 60.25) internal successors, (241), 4 states have internal predecessors, (241), 4 states have call successors, (59), 3 states have call predecessors, (59), 3 states have return successors, (57), 4 states have call predecessors, (57), 4 states have call successors, (57) [2021-11-12 23:49:37,465 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 [] [2021-11-12 23:49:46,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:49:46,853 INFO L93 Difference]: Finished difference Result 63797 states and 92664 transitions. [2021-11-12 23:49:46,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:49:46,854 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 60.25) internal successors, (241), 4 states have internal predecessors, (241), 4 states have call successors, (59), 3 states have call predecessors, (59), 3 states have return successors, (57), 4 states have call predecessors, (57), 4 states have call successors, (57) Word has length 305 [2021-11-12 23:49:46,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:49:47,048 INFO L225 Difference]: With dead ends: 63797 [2021-11-12 23:49:47,049 INFO L226 Difference]: Without dead ends: 41614 [2021-11-12 23:49:47,132 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1216 GetRequests, 1203 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2021-11-12 23:49:47,133 INFO L933 BasicCegarLoop]: 5616 mSDtfsCounter, 4517 mSDsluCounter, 3444 mSDsCounter, 0 mSdLazyCounter, 1358 mSolverCounterSat, 493 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8093.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4517 SdHoareTripleChecker+Valid, 9060 SdHoareTripleChecker+Invalid, 1852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.11ms SdHoareTripleChecker+Time, 493 IncrementalHoareTripleChecker+Valid, 1358 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8799.26ms IncrementalHoareTripleChecker+Time [2021-11-12 23:49:47,133 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4517 Valid, 9060 Invalid, 1852 Unknown, 0 Unchecked, 24.11ms Time], IncrementalHoareTripleChecker [493 Valid, 1358 Invalid, 1 Unknown, 0 Unchecked, 8799.26ms Time] [2021-11-12 23:49:47,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41614 states. [2021-11-12 23:49:50,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41614 to 41598. [2021-11-12 23:49:50,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41598 states, 24373 states have (on average 1.2433840725392853) internal successors, (30305), 24945 states have internal predecessors, (30305), 15002 states have call successors, (15002), 2235 states have call predecessors, (15002), 2222 states have return successors, (15088), 14662 states have call predecessors, (15088), 15002 states have call successors, (15088) [2021-11-12 23:49:50,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41598 states to 41598 states and 60395 transitions. [2021-11-12 23:49:50,635 INFO L78 Accepts]: Start accepts. Automaton has 41598 states and 60395 transitions. Word has length 305 [2021-11-12 23:49:50,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:49:50,636 INFO L470 AbstractCegarLoop]: Abstraction has 41598 states and 60395 transitions. [2021-11-12 23:49:50,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.25) internal successors, (241), 4 states have internal predecessors, (241), 4 states have call successors, (59), 3 states have call predecessors, (59), 3 states have return successors, (57), 4 states have call predecessors, (57), 4 states have call successors, (57) [2021-11-12 23:49:50,636 INFO L276 IsEmpty]: Start isEmpty. Operand 41598 states and 60395 transitions. [2021-11-12 23:49:50,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2021-11-12 23:49:50,738 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:49:50,739 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 11, 11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:49:50,760 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2021-11-12 23:49:50,996 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-12 23:49:51,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:49:51,156 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:49:51,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:49:51,156 INFO L85 PathProgramCache]: Analyzing trace with hash -278251154, now seen corresponding path program 1 times [2021-11-12 23:49:51,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:49:51,160 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1148372561] [2021-11-12 23:49:51,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:49:51,161 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:49:51,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:49:51,163 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:49:51,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-12 23:49:57,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:49:57,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 2634 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 23:49:57,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:49:59,955 INFO L134 CoverageAnalysis]: Checked inductivity of 719 backedges. 279 proven. 3 refuted. 0 times theorem prover too weak. 437 trivial. 0 not checked. [2021-11-12 23:49:59,955 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:50:01,418 INFO L134 CoverageAnalysis]: Checked inductivity of 719 backedges. 15 proven. 27 refuted. 0 times theorem prover too weak. 677 trivial. 0 not checked. [2021-11-12 23:50:01,419 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:50:01,419 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1148372561] [2021-11-12 23:50:01,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1148372561] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:50:01,419 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1797937873] [2021-11-12 23:50:01,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:50:01,419 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:50:01,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:50:01,420 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:50:01,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2021-11-12 23:50:03,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:50:03,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 2634 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:50:03,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:50:05,096 INFO L134 CoverageAnalysis]: Checked inductivity of 719 backedges. 312 proven. 0 refuted. 0 times theorem prover too weak. 407 trivial. 0 not checked. [2021-11-12 23:50:05,096 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:50:06,070 INFO L134 CoverageAnalysis]: Checked inductivity of 719 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 665 trivial. 0 not checked. [2021-11-12 23:50:06,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1797937873] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:50:06,070 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-12 23:50:06,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8, 8] total 15 [2021-11-12 23:50:06,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715271095] [2021-11-12 23:50:06,071 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:50:06,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:50:06,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:50:06,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:50:06,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2021-11-12 23:50:06,072 INFO L87 Difference]: Start difference. First operand 41598 states and 60395 transitions. Second operand has 4 states, 4 states have (on average 68.5) internal successors, (274), 4 states have internal predecessors, (274), 4 states have call successors, (66), 3 states have call predecessors, (66), 3 states have return successors, (64), 4 states have call predecessors, (64), 4 states have call successors, (64) [2021-11-12 23:50:08,367 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:50:17,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:50:17,553 INFO L93 Difference]: Finished difference Result 94602 states and 137329 transitions. [2021-11-12 23:50:17,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:50:17,554 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 68.5) internal successors, (274), 4 states have internal predecessors, (274), 4 states have call successors, (66), 3 states have call predecessors, (66), 3 states have return successors, (64), 4 states have call predecessors, (64), 4 states have call successors, (64) Word has length 407 [2021-11-12 23:50:17,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:50:17,976 INFO L225 Difference]: With dead ends: 94602 [2021-11-12 23:50:17,976 INFO L226 Difference]: Without dead ends: 53848 [2021-11-12 23:50:18,148 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1624 GetRequests, 1611 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2021-11-12 23:50:18,149 INFO L933 BasicCegarLoop]: 5139 mSDtfsCounter, 4700 mSDsluCounter, 3541 mSDsCounter, 0 mSdLazyCounter, 1172 mSolverCounterSat, 34 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6790.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4700 SdHoareTripleChecker+Valid, 8680 SdHoareTripleChecker+Invalid, 1207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.94ms SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1172 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7267.88ms IncrementalHoareTripleChecker+Time [2021-11-12 23:50:18,150 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4700 Valid, 8680 Invalid, 1207 Unknown, 0 Unchecked, 22.94ms Time], IncrementalHoareTripleChecker [34 Valid, 1172 Invalid, 1 Unknown, 0 Unchecked, 7267.88ms Time] [2021-11-12 23:50:18,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53848 states. [2021-11-12 23:50:23,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53848 to 53832. [2021-11-12 23:50:23,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53832 states, 31503 states have (on average 1.242262641653176) internal successors, (39135), 32205 states have internal predecessors, (39135), 19416 states have call successors, (19416), 2929 states have call predecessors, (19416), 2912 states have return successors, (19502), 19016 states have call predecessors, (19502), 19416 states have call successors, (19502) [2021-11-12 23:50:23,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53832 states to 53832 states and 78053 transitions. [2021-11-12 23:50:23,432 INFO L78 Accepts]: Start accepts. Automaton has 53832 states and 78053 transitions. Word has length 407 [2021-11-12 23:50:23,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:50:23,433 INFO L470 AbstractCegarLoop]: Abstraction has 53832 states and 78053 transitions. [2021-11-12 23:50:23,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 68.5) internal successors, (274), 4 states have internal predecessors, (274), 4 states have call successors, (66), 3 states have call predecessors, (66), 3 states have return successors, (64), 4 states have call predecessors, (64), 4 states have call successors, (64) [2021-11-12 23:50:23,433 INFO L276 IsEmpty]: Start isEmpty. Operand 53832 states and 78053 transitions. [2021-11-12 23:50:23,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2021-11-12 23:50:23,575 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:50:23,575 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 11, 11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:50:23,593 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (25)] Forceful destruction successful, exit code 0 [2021-11-12 23:50:23,815 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (24)] Ended with exit code 0 [2021-11-12 23:50:23,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:50:23,976 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:50:23,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:50:23,976 INFO L85 PathProgramCache]: Analyzing trace with hash -127393474, now seen corresponding path program 1 times [2021-11-12 23:50:23,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:50:23,980 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1046521427] [2021-11-12 23:50:23,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:50:23,980 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:50:23,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:50:23,982 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:50:23,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-12 23:50:30,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:50:30,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 2639 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 23:50:30,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:50:32,573 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 279 proven. 3 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2021-11-12 23:50:32,573 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:50:34,088 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 15 proven. 27 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2021-11-12 23:50:34,088 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:50:34,088 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1046521427] [2021-11-12 23:50:34,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1046521427] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:50:34,088 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1426681999] [2021-11-12 23:50:34,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:50:34,089 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:50:34,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:50:34,089 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:50:34,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4bd449-0709-4b7a-b183-b74a97bfa5f3/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2021-11-12 23:50:36,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:50:36,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 2639 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:50:36,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:50:37,898 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 319 proven. 0 refuted. 0 times theorem prover too weak. 407 trivial. 0 not checked. [2021-11-12 23:50:37,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:50:39,097 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 665 trivial. 0 not checked. [2021-11-12 23:50:39,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1426681999] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:50:39,097 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-12 23:50:39,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8, 8] total 15 [2021-11-12 23:50:39,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543444646] [2021-11-12 23:50:39,098 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:50:39,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:50:39,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:50:39,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:50:39,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2021-11-12 23:50:39,099 INFO L87 Difference]: Start difference. First operand 53832 states and 78053 transitions. Second operand has 4 states, 4 states have (on average 71.0) internal successors, (284), 4 states have internal predecessors, (284), 4 states have call successors, (66), 3 states have call predecessors, (66), 3 states have return successors, (64), 4 states have call predecessors, (64), 4 states have call successors, (64) [2021-11-12 23:50:41,412 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 []