./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/openssl/s3_srvr.blast.06.i.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- 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_b6f4159e-4e05-48d4-873f-4710e1a4590d/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f4159e-4e05-48d4-873f-4710e1a4590d/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_b6f4159e-4e05-48d4-873f-4710e1a4590d/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f4159e-4e05-48d4-873f-4710e1a4590d/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl/s3_srvr.blast.06.i.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f4159e-4e05-48d4-873f-4710e1a4590d/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f4159e-4e05-48d4-873f-4710e1a4590d/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 32bit --witnessprinter.graph.data.programhash 61a0aa66b71092ec74a73b9f534556f5bbb6f25851e8b5ad307fc7dd7f051667 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 01:27:47,842 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 01:27:47,845 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 01:27:47,879 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 01:27:47,880 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 01:27:47,881 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 01:27:47,883 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 01:27:47,886 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 01:27:47,888 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 01:27:47,889 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 01:27:47,891 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 01:27:47,892 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 01:27:47,893 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 01:27:47,894 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 01:27:47,896 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 01:27:47,898 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 01:27:47,899 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 01:27:47,900 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 01:27:47,903 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 01:27:47,906 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 01:27:47,908 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 01:27:47,910 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 01:27:47,911 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 01:27:47,912 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 01:27:47,916 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 01:27:47,917 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 01:27:47,917 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 01:27:47,918 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 01:27:47,919 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 01:27:47,920 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 01:27:47,921 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 01:27:47,922 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 01:27:47,923 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 01:27:47,924 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 01:27:47,926 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 01:27:47,926 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 01:27:47,927 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 01:27:47,927 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 01:27:47,928 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 01:27:47,929 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 01:27:47,930 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 01:27:47,931 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f4159e-4e05-48d4-873f-4710e1a4590d/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-13 01:27:47,972 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 01:27:47,972 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 01:27:47,973 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 01:27:47,973 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 01:27:47,974 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 01:27:47,974 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 01:27:47,974 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 01:27:47,974 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-13 01:27:47,975 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 01:27:47,975 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 01:27:47,975 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-13 01:27:47,976 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-13 01:27:47,976 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 01:27:47,976 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-13 01:27:47,976 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-13 01:27:47,977 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-13 01:27:47,977 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 01:27:47,978 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 01:27:47,978 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 01:27:47,978 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 01:27:47,979 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 01:27:47,979 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 01:27:47,979 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 01:27:47,979 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 01:27:47,980 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 01:27:47,980 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 01:27:47,980 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 01:27:47,980 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 01:27:47,981 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 01:27:47,981 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 01:27:47,981 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 01:27:47,982 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:27:47,988 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 01:27:47,989 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 01:27:47,989 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 01:27:47,989 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-13 01:27:47,990 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 01:27:47,990 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 01:27:47,991 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 01:27:47,991 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 01:27:47,991 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_b6f4159e-4e05-48d4-873f-4710e1a4590d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f4159e-4e05-48d4-873f-4710e1a4590d/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 61a0aa66b71092ec74a73b9f534556f5bbb6f25851e8b5ad307fc7dd7f051667 [2021-11-13 01:27:48,267 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 01:27:48,298 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 01:27:48,300 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 01:27:48,302 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 01:27:48,302 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 01:27:48,304 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f4159e-4e05-48d4-873f-4710e1a4590d/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/openssl/s3_srvr.blast.06.i.cil-2.c [2021-11-13 01:27:48,371 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f4159e-4e05-48d4-873f-4710e1a4590d/bin/utaipan-vmNK8stdcF/data/3b9a1ea1a/bb9d4a5940764c739d3f4e669e5c51c3/FLAGfbe667b84 [2021-11-13 01:27:49,002 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 01:27:49,003 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f4159e-4e05-48d4-873f-4710e1a4590d/sv-benchmarks/c/openssl/s3_srvr.blast.06.i.cil-2.c [2021-11-13 01:27:49,029 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f4159e-4e05-48d4-873f-4710e1a4590d/bin/utaipan-vmNK8stdcF/data/3b9a1ea1a/bb9d4a5940764c739d3f4e669e5c51c3/FLAGfbe667b84 [2021-11-13 01:27:49,183 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f4159e-4e05-48d4-873f-4710e1a4590d/bin/utaipan-vmNK8stdcF/data/3b9a1ea1a/bb9d4a5940764c739d3f4e669e5c51c3 [2021-11-13 01:27:49,186 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 01:27:49,188 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 01:27:49,193 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 01:27:49,194 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 01:27:49,197 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 01:27:49,198 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:27:49" (1/1) ... [2021-11-13 01:27:49,199 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c6e3b16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:49, skipping insertion in model container [2021-11-13 01:27:49,199 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:27:49" (1/1) ... [2021-11-13 01:27:49,206 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 01:27:49,285 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 01:27:49,656 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_b6f4159e-4e05-48d4-873f-4710e1a4590d/sv-benchmarks/c/openssl/s3_srvr.blast.06.i.cil-2.c[78808,78821] [2021-11-13 01:27:49,695 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:27:49,709 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-13 01:27:49,709 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5c9d2abc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:49, skipping insertion in model container [2021-11-13 01:27:49,710 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 01:27:49,710 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-13 01:27:49,712 INFO L158 Benchmark]: Toolchain (without parser) took 522.63ms. Allocated memory is still 107.0MB. Free memory was 81.1MB in the beginning and 60.0MB in the end (delta: 21.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2021-11-13 01:27:49,713 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 81.8MB. Free memory was 55.3MB in the beginning and 55.2MB in the end (delta: 37.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 01:27:49,713 INFO L158 Benchmark]: CACSL2BoogieTranslator took 517.33ms. Allocated memory is still 107.0MB. Free memory was 80.8MB in the beginning and 60.0MB in the end (delta: 20.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2021-11-13 01:27:49,715 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 81.8MB. Free memory was 55.3MB in the beginning and 55.2MB in the end (delta: 37.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 517.33ms. Allocated memory is still 107.0MB. Free memory was 80.8MB in the beginning and 60.0MB in the end (delta: 20.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1050]: 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_b6f4159e-4e05-48d4-873f-4710e1a4590d/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f4159e-4e05-48d4-873f-4710e1a4590d/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_b6f4159e-4e05-48d4-873f-4710e1a4590d/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f4159e-4e05-48d4-873f-4710e1a4590d/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl/s3_srvr.blast.06.i.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f4159e-4e05-48d4-873f-4710e1a4590d/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f4159e-4e05-48d4-873f-4710e1a4590d/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 32bit --witnessprinter.graph.data.programhash 61a0aa66b71092ec74a73b9f534556f5bbb6f25851e8b5ad307fc7dd7f051667 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 01:27:51,904 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 01:27:51,906 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 01:27:51,936 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 01:27:51,937 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 01:27:51,938 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 01:27:51,940 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 01:27:51,942 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 01:27:51,945 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 01:27:51,946 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 01:27:51,947 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 01:27:51,948 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 01:27:51,949 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 01:27:51,950 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 01:27:51,952 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 01:27:51,953 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 01:27:51,954 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 01:27:51,956 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 01:27:51,958 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 01:27:51,960 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 01:27:51,962 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 01:27:51,964 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 01:27:51,965 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 01:27:51,966 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 01:27:51,970 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 01:27:51,974 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 01:27:51,975 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 01:27:51,976 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 01:27:51,977 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 01:27:51,978 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 01:27:51,978 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 01:27:51,979 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 01:27:51,980 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 01:27:51,981 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 01:27:51,982 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 01:27:51,982 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 01:27:52,000 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 01:27:52,001 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 01:27:52,002 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 01:27:52,003 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 01:27:52,004 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 01:27:52,005 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f4159e-4e05-48d4-873f-4710e1a4590d/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-13 01:27:52,052 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 01:27:52,052 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 01:27:52,053 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 01:27:52,053 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 01:27:52,054 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 01:27:52,054 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 01:27:52,054 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 01:27:52,054 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 01:27:52,055 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 01:27:52,055 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 01:27:52,057 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 01:27:52,058 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 01:27:52,058 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 01:27:52,058 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 01:27:52,058 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 01:27:52,059 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 01:27:52,059 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 01:27:52,059 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 01:27:52,059 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 01:27:52,059 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 01:27:52,060 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 01:27:52,060 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 01:27:52,060 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 01:27:52,060 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 01:27:52,061 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 01:27:52,061 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 01:27:52,061 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 01:27:52,061 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:27:52,061 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 01:27:52,062 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 01:27:52,062 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 01:27:52,062 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-13 01:27:52,062 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 01:27:52,063 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 01:27:52,063 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 01:27:52,063 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 01:27:52,063 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_b6f4159e-4e05-48d4-873f-4710e1a4590d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f4159e-4e05-48d4-873f-4710e1a4590d/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 61a0aa66b71092ec74a73b9f534556f5bbb6f25851e8b5ad307fc7dd7f051667 [2021-11-13 01:27:52,444 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 01:27:52,471 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 01:27:52,474 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 01:27:52,476 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 01:27:52,476 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 01:27:52,478 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f4159e-4e05-48d4-873f-4710e1a4590d/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/openssl/s3_srvr.blast.06.i.cil-2.c [2021-11-13 01:27:52,551 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f4159e-4e05-48d4-873f-4710e1a4590d/bin/utaipan-vmNK8stdcF/data/0d0c72969/d3e709154c684febb9b63e5a5c89d045/FLAG01112142c [2021-11-13 01:27:53,210 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 01:27:53,211 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f4159e-4e05-48d4-873f-4710e1a4590d/sv-benchmarks/c/openssl/s3_srvr.blast.06.i.cil-2.c [2021-11-13 01:27:53,238 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f4159e-4e05-48d4-873f-4710e1a4590d/bin/utaipan-vmNK8stdcF/data/0d0c72969/d3e709154c684febb9b63e5a5c89d045/FLAG01112142c [2021-11-13 01:27:53,376 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f4159e-4e05-48d4-873f-4710e1a4590d/bin/utaipan-vmNK8stdcF/data/0d0c72969/d3e709154c684febb9b63e5a5c89d045 [2021-11-13 01:27:53,378 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 01:27:53,380 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 01:27:53,383 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 01:27:53,384 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 01:27:53,388 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 01:27:53,389 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:27:53" (1/1) ... [2021-11-13 01:27:53,390 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41d34b80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:53, skipping insertion in model container [2021-11-13 01:27:53,391 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:27:53" (1/1) ... [2021-11-13 01:27:53,398 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 01:27:53,486 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 01:27:53,992 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_b6f4159e-4e05-48d4-873f-4710e1a4590d/sv-benchmarks/c/openssl/s3_srvr.blast.06.i.cil-2.c[78808,78821] [2021-11-13 01:27:54,002 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:27:54,028 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-13 01:27:54,045 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 01:27:54,234 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_b6f4159e-4e05-48d4-873f-4710e1a4590d/sv-benchmarks/c/openssl/s3_srvr.blast.06.i.cil-2.c[78808,78821] [2021-11-13 01:27:54,237 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:27:54,255 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 01:27:54,360 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_b6f4159e-4e05-48d4-873f-4710e1a4590d/sv-benchmarks/c/openssl/s3_srvr.blast.06.i.cil-2.c[78808,78821] [2021-11-13 01:27:54,363 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:27:54,386 INFO L208 MainTranslator]: Completed translation [2021-11-13 01:27:54,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:54 WrapperNode [2021-11-13 01:27:54,388 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 01:27:54,389 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 01:27:54,389 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 01:27:54,389 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 01:27:54,396 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:54" (1/1) ... [2021-11-13 01:27:54,438 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:54" (1/1) ... [2021-11-13 01:27:54,505 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 01:27:54,506 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 01:27:54,507 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 01:27:54,507 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 01:27:54,515 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:54" (1/1) ... [2021-11-13 01:27:54,515 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:54" (1/1) ... [2021-11-13 01:27:54,542 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:54" (1/1) ... [2021-11-13 01:27:54,551 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:54" (1/1) ... [2021-11-13 01:27:54,615 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:54" (1/1) ... [2021-11-13 01:27:54,624 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:54" (1/1) ... [2021-11-13 01:27:54,627 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:54" (1/1) ... [2021-11-13 01:27:54,634 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 01:27:54,647 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 01:27:54,647 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 01:27:54,647 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 01:27:54,648 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:54" (1/1) ... [2021-11-13 01:27:54,654 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:27:54,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f4159e-4e05-48d4-873f-4710e1a4590d/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 01:27:54,675 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f4159e-4e05-48d4-873f-4710e1a4590d/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 01:27:54,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f4159e-4e05-48d4-873f-4710e1a4590d/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 01:27:54,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-13 01:27:54,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 01:27:54,718 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 01:27:54,718 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-13 01:27:54,719 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 01:27:54,719 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 01:27:54,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 01:27:54,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 01:27:54,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-13 01:27:54,884 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-13 01:28:03,774 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2021-11-13 01:28:03,774 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2021-11-13 01:28:03,791 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 01:28:03,791 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-13 01:28:03,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:28:03 BoogieIcfgContainer [2021-11-13 01:28:03,793 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 01:28:03,795 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 01:28:03,795 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 01:28:03,797 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 01:28:03,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 01:27:53" (1/3) ... [2021-11-13 01:28:03,798 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bf52763 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:28:03, skipping insertion in model container [2021-11-13 01:28:03,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:54" (2/3) ... [2021-11-13 01:28:03,798 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bf52763 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:28:03, skipping insertion in model container [2021-11-13 01:28:03,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:28:03" (3/3) ... [2021-11-13 01:28:03,799 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.06.i.cil-2.c [2021-11-13 01:28:03,811 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 01:28:03,813 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 01:28:03,880 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 01:28:03,892 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-13 01:28:03,893 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 01:28:03,916 INFO L276 IsEmpty]: Start isEmpty. Operand has 162 states, 160 states have (on average 1.7375) internal successors, (278), 161 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:03,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-13 01:28:03,928 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:28:03,928 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:28:03,929 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:28:03,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:28:03,934 INFO L85 PathProgramCache]: Analyzing trace with hash 271453869, now seen corresponding path program 1 times [2021-11-13 01:28:03,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:28:03,948 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1226383708] [2021-11-13 01:28:03,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:28:03,948 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:28:03,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f4159e-4e05-48d4-873f-4710e1a4590d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:28:03,951 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f4159e-4e05-48d4-873f-4710e1a4590d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:28:03,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f4159e-4e05-48d4-873f-4710e1a4590d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 01:28:04,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:28:04,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 01:28:04,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:28:04,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:28:04,482 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:28:04,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:28:04,744 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:28:04,745 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1226383708] [2021-11-13 01:28:04,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1226383708] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:28:04,747 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:28:04,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 01:28:04,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160120124] [2021-11-13 01:28:04,753 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:28:04,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 01:28:04,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:28:04,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 01:28:04,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:28:04,805 INFO L87 Difference]: Start difference. First operand has 162 states, 160 states have (on average 1.7375) internal successors, (278), 161 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:05,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:28:05,169 INFO L93 Difference]: Finished difference Result 610 states and 1056 transitions. [2021-11-13 01:28:05,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 01:28:05,172 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-11-13 01:28:05,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:28:05,187 INFO L225 Difference]: With dead ends: 610 [2021-11-13 01:28:05,187 INFO L226 Difference]: Without dead ends: 419 [2021-11-13 01:28:05,191 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:28:05,194 INFO L933 BasicCegarLoop]: 232 mSDtfsCounter, 404 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 207.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 404 SdHoareTripleChecker+Valid, 667 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.84ms SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 248.99ms IncrementalHoareTripleChecker+Time [2021-11-13 01:28:05,195 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [404 Valid, 667 Invalid, 173 Unknown, 0 Unchecked, 14.84ms Time], IncrementalHoareTripleChecker [63 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 248.99ms Time] [2021-11-13 01:28:05,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2021-11-13 01:28:05,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 419. [2021-11-13 01:28:05,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 418 states have (on average 1.5406698564593302) internal successors, (644), 418 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:05,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 644 transitions. [2021-11-13 01:28:05,262 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 644 transitions. Word has length 47 [2021-11-13 01:28:05,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:28:05,263 INFO L470 AbstractCegarLoop]: Abstraction has 419 states and 644 transitions. [2021-11-13 01:28:05,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:05,263 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 644 transitions. [2021-11-13 01:28:05,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-13 01:28:05,270 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:28:05,271 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-13 01:28:05,288 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f4159e-4e05-48d4-873f-4710e1a4590d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-13 01:28:05,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f4159e-4e05-48d4-873f-4710e1a4590d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:28:05,484 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:28:05,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:28:05,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1390827129, now seen corresponding path program 1 times [2021-11-13 01:28:05,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:28:05,487 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1273594916] [2021-11-13 01:28:05,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:28:05,487 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:28:05,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f4159e-4e05-48d4-873f-4710e1a4590d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:28:05,489 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f4159e-4e05-48d4-873f-4710e1a4590d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:28:05,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f4159e-4e05-48d4-873f-4710e1a4590d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-13 01:28:05,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:28:05,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 01:28:05,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:28:06,197 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:28:06,197 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:28:06,554 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:28:06,555 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:28:06,555 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1273594916] [2021-11-13 01:28:06,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1273594916] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:28:06,555 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:28:06,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 01:28:06,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089277463] [2021-11-13 01:28:06,556 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:28:06,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 01:28:06,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:28:06,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 01:28:06,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:28:06,558 INFO L87 Difference]: Start difference. First operand 419 states and 644 transitions. Second operand has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:07,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:28:07,400 INFO L93 Difference]: Finished difference Result 960 states and 1506 transitions. [2021-11-13 01:28:07,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 01:28:07,401 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-11-13 01:28:07,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:28:07,406 INFO L225 Difference]: With dead ends: 960 [2021-11-13 01:28:07,407 INFO L226 Difference]: Without dead ends: 687 [2021-11-13 01:28:07,409 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:28:07,410 INFO L933 BasicCegarLoop]: 361 mSDtfsCounter, 315 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 758.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 721 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.46ms SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 806.47ms IncrementalHoareTripleChecker+Time [2021-11-13 01:28:07,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [315 Valid, 721 Invalid, 188 Unknown, 0 Unchecked, 3.46ms Time], IncrementalHoareTripleChecker [60 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 806.47ms Time] [2021-11-13 01:28:07,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2021-11-13 01:28:07,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 687. [2021-11-13 01:28:07,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 687 states, 686 states have (on average 1.5291545189504374) internal successors, (1049), 686 states have internal predecessors, (1049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:07,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 1049 transitions. [2021-11-13 01:28:07,448 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 1049 transitions. Word has length 110 [2021-11-13 01:28:07,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:28:07,449 INFO L470 AbstractCegarLoop]: Abstraction has 687 states and 1049 transitions. [2021-11-13 01:28:07,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:07,450 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 1049 transitions. [2021-11-13 01:28:07,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-13 01:28:07,453 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:28:07,454 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-13 01:28:07,472 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f4159e-4e05-48d4-873f-4710e1a4590d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-13 01:28:07,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f4159e-4e05-48d4-873f-4710e1a4590d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:28:07,669 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:28:07,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:28:07,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1114584605, now seen corresponding path program 1 times [2021-11-13 01:28:07,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:28:07,672 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [447033939] [2021-11-13 01:28:07,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:28:07,673 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:28:07,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f4159e-4e05-48d4-873f-4710e1a4590d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:28:07,674 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f4159e-4e05-48d4-873f-4710e1a4590d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:28:07,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f4159e-4e05-48d4-873f-4710e1a4590d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-13 01:28:08,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:28:08,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 01:28:08,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:28:08,546 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-13 01:28:08,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:28:09,046 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-13 01:28:09,046 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:28:09,046 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [447033939] [2021-11-13 01:28:09,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [447033939] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:28:09,047 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:28:09,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 01:28:09,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178876185] [2021-11-13 01:28:09,047 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:28:09,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 01:28:09,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:28:09,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 01:28:09,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:28:09,050 INFO L87 Difference]: Start difference. First operand 687 states and 1049 transitions. Second operand has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:09,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:28:09,832 INFO L93 Difference]: Finished difference Result 1499 states and 2319 transitions. [2021-11-13 01:28:09,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 01:28:09,833 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 176 [2021-11-13 01:28:09,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:28:09,840 INFO L225 Difference]: With dead ends: 1499 [2021-11-13 01:28:09,840 INFO L226 Difference]: Without dead ends: 958 [2021-11-13 01:28:09,841 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 348 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:28:09,843 INFO L933 BasicCegarLoop]: 365 mSDtfsCounter, 315 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 680.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 731 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.65ms SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 734.76ms IncrementalHoareTripleChecker+Time [2021-11-13 01:28:09,843 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [315 Valid, 731 Invalid, 188 Unknown, 0 Unchecked, 3.65ms Time], IncrementalHoareTripleChecker [58 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 734.76ms Time] [2021-11-13 01:28:09,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 958 states. [2021-11-13 01:28:09,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 958 to 958. [2021-11-13 01:28:09,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 958 states, 957 states have (on average 1.522466039707419) internal successors, (1457), 957 states have internal predecessors, (1457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:09,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 958 states to 958 states and 1457 transitions. [2021-11-13 01:28:09,883 INFO L78 Accepts]: Start accepts. Automaton has 958 states and 1457 transitions. Word has length 176 [2021-11-13 01:28:09,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:28:09,884 INFO L470 AbstractCegarLoop]: Abstraction has 958 states and 1457 transitions. [2021-11-13 01:28:09,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:09,885 INFO L276 IsEmpty]: Start isEmpty. Operand 958 states and 1457 transitions. [2021-11-13 01:28:09,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2021-11-13 01:28:09,888 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:28:09,889 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-11-13 01:28:09,905 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f4159e-4e05-48d4-873f-4710e1a4590d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-13 01:28:10,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f4159e-4e05-48d4-873f-4710e1a4590d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:28:10,107 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:28:10,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:28:10,109 INFO L85 PathProgramCache]: Analyzing trace with hash 824529479, now seen corresponding path program 1 times [2021-11-13 01:28:10,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:28:10,112 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2079609039] [2021-11-13 01:28:10,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:28:10,112 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:28:10,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f4159e-4e05-48d4-873f-4710e1a4590d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:28:10,114 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f4159e-4e05-48d4-873f-4710e1a4590d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:28:10,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f4159e-4e05-48d4-873f-4710e1a4590d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-13 01:28:10,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:28:10,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 01:28:10,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:28:11,175 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 295 proven. 0 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2021-11-13 01:28:11,175 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:28:11,805 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 295 proven. 0 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2021-11-13 01:28:11,805 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:28:11,805 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2079609039] [2021-11-13 01:28:11,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2079609039] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:28:11,806 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:28:11,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 01:28:11,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758285820] [2021-11-13 01:28:11,807 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:28:11,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 01:28:11,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:28:11,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 01:28:11,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:28:11,810 INFO L87 Difference]: Start difference. First operand 958 states and 1457 transitions. Second operand has 4 states, 4 states have (on average 47.5) internal successors, (190), 4 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:12,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:28:12,480 INFO L93 Difference]: Finished difference Result 2039 states and 3130 transitions. [2021-11-13 01:28:12,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 01:28:12,480 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.5) internal successors, (190), 4 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 242 [2021-11-13 01:28:12,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:28:12,491 INFO L225 Difference]: With dead ends: 2039 [2021-11-13 01:28:12,491 INFO L226 Difference]: Without dead ends: 1227 [2021-11-13 01:28:12,493 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 480 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:28:12,495 INFO L933 BasicCegarLoop]: 365 mSDtfsCounter, 323 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 571.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 729 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.49ms SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 610.26ms IncrementalHoareTripleChecker+Time [2021-11-13 01:28:12,497 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [323 Valid, 729 Invalid, 185 Unknown, 0 Unchecked, 3.49ms Time], IncrementalHoareTripleChecker [56 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 610.26ms Time] [2021-11-13 01:28:12,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1227 states. [2021-11-13 01:28:12,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1227 to 1227. [2021-11-13 01:28:12,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1227 states, 1226 states have (on average 1.5171288743882545) internal successors, (1860), 1226 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:12,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1227 states to 1227 states and 1860 transitions. [2021-11-13 01:28:12,548 INFO L78 Accepts]: Start accepts. Automaton has 1227 states and 1860 transitions. Word has length 242 [2021-11-13 01:28:12,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:28:12,550 INFO L470 AbstractCegarLoop]: Abstraction has 1227 states and 1860 transitions. [2021-11-13 01:28:12,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.5) internal successors, (190), 4 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:12,550 INFO L276 IsEmpty]: Start isEmpty. Operand 1227 states and 1860 transitions. [2021-11-13 01:28:12,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2021-11-13 01:28:12,557 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:28:12,561 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 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] [2021-11-13 01:28:12,583 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f4159e-4e05-48d4-873f-4710e1a4590d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-13 01:28:12,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f4159e-4e05-48d4-873f-4710e1a4590d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:28:12,776 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:28:12,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:28:12,777 INFO L85 PathProgramCache]: Analyzing trace with hash 220345402, now seen corresponding path program 1 times [2021-11-13 01:28:12,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:28:12,779 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [963450343] [2021-11-13 01:28:12,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:28:12,788 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:28:12,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f4159e-4e05-48d4-873f-4710e1a4590d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:28:12,789 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f4159e-4e05-48d4-873f-4710e1a4590d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:28:12,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f4159e-4e05-48d4-873f-4710e1a4590d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-13 01:28:13,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:28:13,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 701 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 01:28:13,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:28:14,037 INFO L134 CoverageAnalysis]: Checked inductivity of 786 backedges. 486 proven. 0 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2021-11-13 01:28:14,038 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:28:14,776 INFO L134 CoverageAnalysis]: Checked inductivity of 786 backedges. 486 proven. 0 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2021-11-13 01:28:14,777 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:28:14,777 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [963450343] [2021-11-13 01:28:14,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [963450343] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:28:14,777 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:28:14,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 01:28:14,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490128305] [2021-11-13 01:28:14,778 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:28:14,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 01:28:14,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:28:14,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 01:28:14,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:28:14,780 INFO L87 Difference]: Start difference. First operand 1227 states and 1860 transitions. Second operand has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:15,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:28:15,544 INFO L93 Difference]: Finished difference Result 2577 states and 3934 transitions. [2021-11-13 01:28:15,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 01:28:15,545 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 316 [2021-11-13 01:28:15,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:28:15,554 INFO L225 Difference]: With dead ends: 2577 [2021-11-13 01:28:15,554 INFO L226 Difference]: Without dead ends: 1496 [2021-11-13 01:28:15,556 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 630 GetRequests, 628 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:28:15,557 INFO L933 BasicCegarLoop]: 365 mSDtfsCounter, 317 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 653.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 729 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.80ms SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 696.76ms IncrementalHoareTripleChecker+Time [2021-11-13 01:28:15,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [317 Valid, 729 Invalid, 183 Unknown, 0 Unchecked, 3.80ms Time], IncrementalHoareTripleChecker [54 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 696.76ms Time] [2021-11-13 01:28:15,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1496 states. [2021-11-13 01:28:15,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1496 to 1496. [2021-11-13 01:28:15,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1496 states, 1495 states have (on average 1.5123745819397993) internal successors, (2261), 1495 states have internal predecessors, (2261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:15,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1496 states to 1496 states and 2261 transitions. [2021-11-13 01:28:15,616 INFO L78 Accepts]: Start accepts. Automaton has 1496 states and 2261 transitions. Word has length 316 [2021-11-13 01:28:15,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:28:15,617 INFO L470 AbstractCegarLoop]: Abstraction has 1496 states and 2261 transitions. [2021-11-13 01:28:15,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:15,617 INFO L276 IsEmpty]: Start isEmpty. Operand 1496 states and 2261 transitions. [2021-11-13 01:28:15,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2021-11-13 01:28:15,626 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:28:15,627 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 9, 9, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:28:15,646 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f4159e-4e05-48d4-873f-4710e1a4590d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-13 01:28:15,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f4159e-4e05-48d4-873f-4710e1a4590d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:28:15,847 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:28:15,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:28:15,848 INFO L85 PathProgramCache]: Analyzing trace with hash -99567682, now seen corresponding path program 1 times [2021-11-13 01:28:15,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:28:15,849 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2096029874] [2021-11-13 01:28:15,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:28:15,850 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:28:15,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f4159e-4e05-48d4-873f-4710e1a4590d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:28:15,851 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f4159e-4e05-48d4-873f-4710e1a4590d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:28:15,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f4159e-4e05-48d4-873f-4710e1a4590d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-13 01:28:16,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:28:16,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 856 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 01:28:16,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:28:17,315 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 727 proven. 0 refuted. 0 times theorem prover too weak. 516 trivial. 0 not checked. [2021-11-13 01:28:17,316 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:28:18,169 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 727 proven. 0 refuted. 0 times theorem prover too weak. 516 trivial. 0 not checked. [2021-11-13 01:28:18,169 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:28:18,169 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2096029874] [2021-11-13 01:28:18,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2096029874] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:28:18,169 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:28:18,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 01:28:18,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112123509] [2021-11-13 01:28:18,170 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:28:18,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 01:28:18,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:28:18,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 01:28:18,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:28:18,172 INFO L87 Difference]: Start difference. First operand 1496 states and 2261 transitions. Second operand has 4 states, 4 states have (on average 54.25) internal successors, (217), 4 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:19,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:28:19,022 INFO L93 Difference]: Finished difference Result 3113 states and 4731 transitions. [2021-11-13 01:28:19,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 01:28:19,023 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 54.25) internal successors, (217), 4 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 390 [2021-11-13 01:28:19,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:28:19,037 INFO L225 Difference]: With dead ends: 3113 [2021-11-13 01:28:19,037 INFO L226 Difference]: Without dead ends: 1763 [2021-11-13 01:28:19,039 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 778 GetRequests, 776 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:28:19,040 INFO L933 BasicCegarLoop]: 362 mSDtfsCounter, 317 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 730.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.46ms SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 775.12ms IncrementalHoareTripleChecker+Time [2021-11-13 01:28:19,041 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [317 Valid, 728 Invalid, 179 Unknown, 0 Unchecked, 3.46ms Time], IncrementalHoareTripleChecker [51 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 775.12ms Time] [2021-11-13 01:28:19,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1763 states. [2021-11-13 01:28:19,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1763 to 1763. [2021-11-13 01:28:19,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1763 states, 1762 states have (on average 1.5085130533484676) internal successors, (2658), 1762 states have internal predecessors, (2658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:19,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1763 states to 1763 states and 2658 transitions. [2021-11-13 01:28:19,105 INFO L78 Accepts]: Start accepts. Automaton has 1763 states and 2658 transitions. Word has length 390 [2021-11-13 01:28:19,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:28:19,105 INFO L470 AbstractCegarLoop]: Abstraction has 1763 states and 2658 transitions. [2021-11-13 01:28:19,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.25) internal successors, (217), 4 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:19,106 INFO L276 IsEmpty]: Start isEmpty. Operand 1763 states and 2658 transitions. [2021-11-13 01:28:19,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2021-11-13 01:28:19,117 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:28:19,119 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 11, 11, 10, 10, 9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:28:19,143 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f4159e-4e05-48d4-873f-4710e1a4590d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-13 01:28:19,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f4159e-4e05-48d4-873f-4710e1a4590d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:28:19,339 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:28:19,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:28:19,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1436869466, now seen corresponding path program 1 times [2021-11-13 01:28:19,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:28:19,342 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [248620299] [2021-11-13 01:28:19,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:28:19,342 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:28:19,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f4159e-4e05-48d4-873f-4710e1a4590d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:28:19,343 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f4159e-4e05-48d4-873f-4710e1a4590d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:28:19,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f4159e-4e05-48d4-873f-4710e1a4590d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-13 01:28:19,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:28:20,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 996 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 01:28:20,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:28:21,000 INFO L134 CoverageAnalysis]: Checked inductivity of 1836 backedges. 1045 proven. 0 refuted. 0 times theorem prover too weak. 791 trivial. 0 not checked. [2021-11-13 01:28:21,000 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:28:21,962 INFO L134 CoverageAnalysis]: Checked inductivity of 1836 backedges. 1045 proven. 0 refuted. 0 times theorem prover too weak. 791 trivial. 0 not checked. [2021-11-13 01:28:21,963 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:28:21,963 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [248620299] [2021-11-13 01:28:21,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [248620299] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:28:21,963 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:28:21,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 01:28:21,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996919837] [2021-11-13 01:28:21,964 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:28:21,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 01:28:21,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:28:21,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 01:28:21,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:28:21,966 INFO L87 Difference]: Start difference. First operand 1763 states and 2658 transitions. Second operand has 4 states, 4 states have (on average 55.75) internal successors, (223), 4 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:22,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:28:22,845 INFO L93 Difference]: Finished difference Result 3648 states and 5525 transitions. [2021-11-13 01:28:22,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 01:28:22,847 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 55.75) internal successors, (223), 4 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 463 [2021-11-13 01:28:22,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:28:22,858 INFO L225 Difference]: With dead ends: 3648 [2021-11-13 01:28:22,859 INFO L226 Difference]: Without dead ends: 2031 [2021-11-13 01:28:22,863 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 924 GetRequests, 922 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:28:22,864 INFO L933 BasicCegarLoop]: 365 mSDtfsCounter, 325 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 751.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.48ms SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 797.88ms IncrementalHoareTripleChecker+Time [2021-11-13 01:28:22,864 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [325 Valid, 725 Invalid, 177 Unknown, 0 Unchecked, 3.48ms Time], IncrementalHoareTripleChecker [50 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 797.88ms Time] [2021-11-13 01:28:22,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2031 states. [2021-11-13 01:28:22,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2031 to 2031. [2021-11-13 01:28:22,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2031 states, 2030 states have (on average 1.5044334975369458) internal successors, (3054), 2030 states have internal predecessors, (3054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:22,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2031 states to 2031 states and 3054 transitions. [2021-11-13 01:28:22,953 INFO L78 Accepts]: Start accepts. Automaton has 2031 states and 3054 transitions. Word has length 463 [2021-11-13 01:28:22,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:28:22,954 INFO L470 AbstractCegarLoop]: Abstraction has 2031 states and 3054 transitions. [2021-11-13 01:28:22,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.75) internal successors, (223), 4 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:22,954 INFO L276 IsEmpty]: Start isEmpty. Operand 2031 states and 3054 transitions. [2021-11-13 01:28:22,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 510 [2021-11-13 01:28:22,969 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:28:22,969 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 12, 12, 11, 11, 10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:28:22,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f4159e-4e05-48d4-873f-4710e1a4590d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-13 01:28:23,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f4159e-4e05-48d4-873f-4710e1a4590d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:28:23,191 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:28:23,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:28:23,192 INFO L85 PathProgramCache]: Analyzing trace with hash -841726051, now seen corresponding path program 1 times [2021-11-13 01:28:23,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:28:23,194 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1875413253] [2021-11-13 01:28:23,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:28:23,194 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:28:23,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f4159e-4e05-48d4-873f-4710e1a4590d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:28:23,195 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f4159e-4e05-48d4-873f-4710e1a4590d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:28:23,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f4159e-4e05-48d4-873f-4710e1a4590d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-13 01:28:23,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:28:23,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 1091 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 01:28:23,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:28:24,840 INFO L134 CoverageAnalysis]: Checked inductivity of 2217 backedges. 1208 proven. 0 refuted. 0 times theorem prover too weak. 1009 trivial. 0 not checked. [2021-11-13 01:28:24,840 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:28:25,841 INFO L134 CoverageAnalysis]: Checked inductivity of 2217 backedges. 1208 proven. 0 refuted. 0 times theorem prover too weak. 1009 trivial. 0 not checked. [2021-11-13 01:28:25,841 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:28:25,842 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1875413253] [2021-11-13 01:28:25,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1875413253] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:28:25,842 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:28:25,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 01:28:25,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100536584] [2021-11-13 01:28:25,842 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:28:25,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 01:28:25,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:28:25,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 01:28:25,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:28:25,844 INFO L87 Difference]: Start difference. First operand 2031 states and 3054 transitions. Second operand has 4 states, 4 states have (on average 57.75) internal successors, (231), 4 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:26,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:28:26,798 INFO L93 Difference]: Finished difference Result 4184 states and 6315 transitions. [2021-11-13 01:28:26,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 01:28:26,800 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.75) internal successors, (231), 4 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 509 [2021-11-13 01:28:26,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:28:26,813 INFO L225 Difference]: With dead ends: 4184 [2021-11-13 01:28:26,813 INFO L226 Difference]: Without dead ends: 2299 [2021-11-13 01:28:26,816 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1016 GetRequests, 1014 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:28:26,817 INFO L933 BasicCegarLoop]: 365 mSDtfsCounter, 321 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 804.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 729 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.99ms SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 848.95ms IncrementalHoareTripleChecker+Time [2021-11-13 01:28:26,818 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [321 Valid, 729 Invalid, 176 Unknown, 0 Unchecked, 3.99ms Time], IncrementalHoareTripleChecker [48 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 848.95ms Time] [2021-11-13 01:28:26,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2299 states. [2021-11-13 01:28:26,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2299 to 2299. [2021-11-13 01:28:26,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2299 states, 2298 states have (on average 1.5004351610095736) internal successors, (3448), 2298 states have internal predecessors, (3448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:26,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2299 states to 2299 states and 3448 transitions. [2021-11-13 01:28:26,909 INFO L78 Accepts]: Start accepts. Automaton has 2299 states and 3448 transitions. Word has length 509 [2021-11-13 01:28:26,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:28:26,909 INFO L470 AbstractCegarLoop]: Abstraction has 2299 states and 3448 transitions. [2021-11-13 01:28:26,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.75) internal successors, (231), 4 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:26,910 INFO L276 IsEmpty]: Start isEmpty. Operand 2299 states and 3448 transitions. [2021-11-13 01:28:26,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 585 [2021-11-13 01:28:26,930 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:28:26,930 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 14, 14, 13, 13, 12, 12, 11, 11, 11, 11, 11, 10, 10, 9, 9, 9, 9, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-13 01:28:26,969 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f4159e-4e05-48d4-873f-4710e1a4590d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-13 01:28:27,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f4159e-4e05-48d4-873f-4710e1a4590d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:28:27,145 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:28:27,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:28:27,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1840380921, now seen corresponding path program 1 times [2021-11-13 01:28:27,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:28:27,149 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [551582559] [2021-11-13 01:28:27,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:28:27,150 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:28:27,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f4159e-4e05-48d4-873f-4710e1a4590d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:28:27,151 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f4159e-4e05-48d4-873f-4710e1a4590d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:28:27,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f4159e-4e05-48d4-873f-4710e1a4590d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-13 01:28:27,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:28:27,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 1241 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 01:28:27,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:28:29,078 INFO L134 CoverageAnalysis]: Checked inductivity of 3019 backedges. 1631 proven. 0 refuted. 0 times theorem prover too weak. 1388 trivial. 0 not checked. [2021-11-13 01:28:29,078 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:28:30,411 INFO L134 CoverageAnalysis]: Checked inductivity of 3019 backedges. 1631 proven. 0 refuted. 0 times theorem prover too weak. 1388 trivial. 0 not checked. [2021-11-13 01:28:30,411 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:28:30,412 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [551582559] [2021-11-13 01:28:30,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [551582559] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:28:30,412 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:28:30,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 01:28:30,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436531101] [2021-11-13 01:28:30,413 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:28:30,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 01:28:30,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:28:30,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 01:28:30,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:28:30,415 INFO L87 Difference]: Start difference. First operand 2299 states and 3448 transitions. Second operand has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:31,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:28:31,229 INFO L93 Difference]: Finished difference Result 4721 states and 7103 transitions. [2021-11-13 01:28:31,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 01:28:31,230 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 584 [2021-11-13 01:28:31,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:28:31,248 INFO L225 Difference]: With dead ends: 4721 [2021-11-13 01:28:31,248 INFO L226 Difference]: Without dead ends: 2568 [2021-11-13 01:28:31,251 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1166 GetRequests, 1164 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:28:31,253 INFO L933 BasicCegarLoop]: 365 mSDtfsCounter, 323 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 685.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 731 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.84ms SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 730.97ms IncrementalHoareTripleChecker+Time [2021-11-13 01:28:31,254 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [323 Valid, 731 Invalid, 174 Unknown, 0 Unchecked, 3.84ms Time], IncrementalHoareTripleChecker [46 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 730.97ms Time] [2021-11-13 01:28:31,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2568 states. [2021-11-13 01:28:31,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2568 to 2568. [2021-11-13 01:28:31,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2568 states, 2567 states have (on average 1.4966887417218544) internal successors, (3842), 2567 states have internal predecessors, (3842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:31,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2568 states to 2568 states and 3842 transitions. [2021-11-13 01:28:31,370 INFO L78 Accepts]: Start accepts. Automaton has 2568 states and 3842 transitions. Word has length 584 [2021-11-13 01:28:31,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:28:31,371 INFO L470 AbstractCegarLoop]: Abstraction has 2568 states and 3842 transitions. [2021-11-13 01:28:31,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:31,372 INFO L276 IsEmpty]: Start isEmpty. Operand 2568 states and 3842 transitions. [2021-11-13 01:28:31,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 660 [2021-11-13 01:28:31,381 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:28:31,382 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 16, 16, 15, 15, 14, 14, 13, 13, 13, 13, 13, 12, 12, 11, 11, 10, 10, 6, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-13 01:28:31,417 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f4159e-4e05-48d4-873f-4710e1a4590d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-13 01:28:31,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f4159e-4e05-48d4-873f-4710e1a4590d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:28:31,597 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:28:31,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:28:31,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1773637963, now seen corresponding path program 1 times [2021-11-13 01:28:31,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:28:31,600 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [594710570] [2021-11-13 01:28:31,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:28:31,601 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:28:31,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f4159e-4e05-48d4-873f-4710e1a4590d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:28:31,601 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f4159e-4e05-48d4-873f-4710e1a4590d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:28:31,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f4159e-4e05-48d4-873f-4710e1a4590d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-13 01:28:32,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:28:32,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 1389 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 01:28:32,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:28:33,744 INFO L134 CoverageAnalysis]: Checked inductivity of 3958 backedges. 2122 proven. 0 refuted. 0 times theorem prover too weak. 1836 trivial. 0 not checked. [2021-11-13 01:28:33,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:28:35,058 INFO L134 CoverageAnalysis]: Checked inductivity of 3958 backedges. 2122 proven. 0 refuted. 0 times theorem prover too weak. 1836 trivial. 0 not checked. [2021-11-13 01:28:35,058 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:28:35,058 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [594710570] [2021-11-13 01:28:35,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [594710570] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:28:35,059 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:28:35,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 01:28:35,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602918777] [2021-11-13 01:28:35,060 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:28:35,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 01:28:35,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:28:35,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 01:28:35,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:28:35,062 INFO L87 Difference]: Start difference. First operand 2568 states and 3842 transitions. Second operand has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:35,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:28:35,850 INFO L93 Difference]: Finished difference Result 5120 states and 7675 transitions. [2021-11-13 01:28:35,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:28:35,851 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 659 [2021-11-13 01:28:35,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:28:35,866 INFO L225 Difference]: With dead ends: 5120 [2021-11-13 01:28:35,866 INFO L226 Difference]: Without dead ends: 2698 [2021-11-13 01:28:35,870 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1316 GetRequests, 1315 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:28:35,871 INFO L933 BasicCegarLoop]: 404 mSDtfsCounter, 152 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 682.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.99ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 711.68ms IncrementalHoareTripleChecker+Time [2021-11-13 01:28:35,871 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 593 Invalid, 73 Unknown, 0 Unchecked, 1.99ms Time], IncrementalHoareTripleChecker [11 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 711.68ms Time] [2021-11-13 01:28:35,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2698 states. [2021-11-13 01:28:35,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2698 to 2698. [2021-11-13 01:28:35,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2698 states, 2697 states have (on average 1.4946236559139785) internal successors, (4031), 2697 states have internal predecessors, (4031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:35,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2698 states to 2698 states and 4031 transitions. [2021-11-13 01:28:35,997 INFO L78 Accepts]: Start accepts. Automaton has 2698 states and 4031 transitions. Word has length 659 [2021-11-13 01:28:35,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:28:35,998 INFO L470 AbstractCegarLoop]: Abstraction has 2698 states and 4031 transitions. [2021-11-13 01:28:35,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:35,998 INFO L276 IsEmpty]: Start isEmpty. Operand 2698 states and 4031 transitions. [2021-11-13 01:28:36,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 699 [2021-11-13 01:28:36,009 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:28:36,009 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 18, 18, 18, 18, 18, 18, 17, 17, 16, 16, 15, 15, 14, 14, 14, 14, 14, 13, 13, 12, 12, 11, 11, 6, 6, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-13 01:28:36,045 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f4159e-4e05-48d4-873f-4710e1a4590d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-13 01:28:36,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f4159e-4e05-48d4-873f-4710e1a4590d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:28:36,231 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:28:36,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:28:36,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1020212381, now seen corresponding path program 1 times [2021-11-13 01:28:36,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:28:36,235 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1881290910] [2021-11-13 01:28:36,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:28:36,235 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:28:36,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f4159e-4e05-48d4-873f-4710e1a4590d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:28:36,237 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f4159e-4e05-48d4-873f-4710e1a4590d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:28:36,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f4159e-4e05-48d4-873f-4710e1a4590d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-13 01:28:37,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:28:37,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 1466 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 01:28:37,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:28:38,457 INFO L134 CoverageAnalysis]: Checked inductivity of 4496 backedges. 2482 proven. 0 refuted. 0 times theorem prover too weak. 2014 trivial. 0 not checked. [2021-11-13 01:28:38,457 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:28:39,871 INFO L134 CoverageAnalysis]: Checked inductivity of 4496 backedges. 2482 proven. 0 refuted. 0 times theorem prover too weak. 2014 trivial. 0 not checked. [2021-11-13 01:28:39,872 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:28:39,872 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1881290910] [2021-11-13 01:28:39,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1881290910] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:28:39,872 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:28:39,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 01:28:39,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52938524] [2021-11-13 01:28:39,873 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:28:39,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 01:28:39,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:28:39,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 01:28:39,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:28:39,874 INFO L87 Difference]: Start difference. First operand 2698 states and 4031 transitions. Second operand has 4 states, 4 states have (on average 61.75) internal successors, (247), 4 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:40,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:28:40,456 INFO L93 Difference]: Finished difference Result 5513 states and 8260 transitions. [2021-11-13 01:28:40,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 01:28:40,457 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 61.75) internal successors, (247), 4 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 698 [2021-11-13 01:28:40,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:28:40,471 INFO L225 Difference]: With dead ends: 5513 [2021-11-13 01:28:40,471 INFO L226 Difference]: Without dead ends: 2961 [2021-11-13 01:28:40,474 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1394 GetRequests, 1392 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:28:40,475 INFO L933 BasicCegarLoop]: 364 mSDtfsCounter, 321 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 445.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.50ms SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 490.73ms IncrementalHoareTripleChecker+Time [2021-11-13 01:28:40,476 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [321 Valid, 728 Invalid, 168 Unknown, 0 Unchecked, 2.50ms Time], IncrementalHoareTripleChecker [44 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 490.73ms Time] [2021-11-13 01:28:40,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2961 states. [2021-11-13 01:28:40,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2961 to 2961. [2021-11-13 01:28:40,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2961 states, 2960 states have (on average 1.491891891891892) internal successors, (4416), 2960 states have internal predecessors, (4416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:40,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2961 states to 2961 states and 4416 transitions. [2021-11-13 01:28:40,599 INFO L78 Accepts]: Start accepts. Automaton has 2961 states and 4416 transitions. Word has length 698 [2021-11-13 01:28:40,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:28:40,600 INFO L470 AbstractCegarLoop]: Abstraction has 2961 states and 4416 transitions. [2021-11-13 01:28:40,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 61.75) internal successors, (247), 4 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:40,600 INFO L276 IsEmpty]: Start isEmpty. Operand 2961 states and 4416 transitions. [2021-11-13 01:28:40,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 783 [2021-11-13 01:28:40,613 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:28:40,614 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 20, 20, 20, 20, 20, 20, 19, 19, 18, 18, 17, 17, 16, 16, 16, 16, 16, 15, 15, 14, 14, 13, 13, 8, 8, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-11-13 01:28:40,648 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f4159e-4e05-48d4-873f-4710e1a4590d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-13 01:28:40,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f4159e-4e05-48d4-873f-4710e1a4590d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:28:40,827 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:28:40,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:28:40,827 INFO L85 PathProgramCache]: Analyzing trace with hash 636236789, now seen corresponding path program 1 times [2021-11-13 01:28:40,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:28:40,832 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1994007903] [2021-11-13 01:28:40,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:28:40,832 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:28:40,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f4159e-4e05-48d4-873f-4710e1a4590d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:28:40,834 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f4159e-4e05-48d4-873f-4710e1a4590d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:28:40,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f4159e-4e05-48d4-873f-4710e1a4590d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-13 01:30:03,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:30:03,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 1637 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 01:30:03,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:30:04,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:30:04,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:30:04,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:30:04,471 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 01:30:04,472 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 01:30:04,569 INFO L354 Elim1Store]: treesize reduction 190, result has 12.8 percent of original size [2021-11-13 01:30:04,569 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 38 [2021-11-13 01:30:04,658 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 01:30:04,658 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 01:30:04,659 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 01:30:04,977 INFO L354 Elim1Store]: treesize reduction 850, result has 7.0 percent of original size [2021-11-13 01:30:04,978 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 13 case distinctions, treesize of input 70 treesize of output 87 [2021-11-13 01:30:07,418 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-13 01:30:07,418 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 108 treesize of output 36 [2021-11-13 01:30:08,004 INFO L134 CoverageAnalysis]: Checked inductivity of 5702 backedges. 2803 proven. 0 refuted. 0 times theorem prover too weak. 2899 trivial. 0 not checked. [2021-11-13 01:30:08,004 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:30:09,544 INFO L134 CoverageAnalysis]: Checked inductivity of 5702 backedges. 2803 proven. 0 refuted. 0 times theorem prover too weak. 2899 trivial. 0 not checked. [2021-11-13 01:30:09,544 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:30:09,544 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1994007903] [2021-11-13 01:30:09,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1994007903] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:30:09,545 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:30:09,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 7 [2021-11-13 01:30:09,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353754309] [2021-11-13 01:30:09,545 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:30:09,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 01:30:09,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:30:09,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 01:30:09,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-13 01:30:09,548 INFO L87 Difference]: Start difference. First operand 2961 states and 4416 transitions. Second operand has 7 states, 7 states have (on average 38.0) internal successors, (266), 7 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:30:11,582 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:30:13,990 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:30:15,676 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:30:16,844 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:30:21,264 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:30:23,729 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:30:26,716 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:30:28,969 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:30:30,091 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:30:36,601 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:30:39,200 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:30:45,372 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:30:55,877 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:31:01,159 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:31:05,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:31:05,486 INFO L93 Difference]: Finished difference Result 13111 states and 19622 transitions. [2021-11-13 01:31:05,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 01:31:05,489 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 38.0) internal successors, (266), 7 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 782 [2021-11-13 01:31:05,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:31:05,535 INFO L225 Difference]: With dead ends: 13111 [2021-11-13 01:31:05,536 INFO L226 Difference]: Without dead ends: 10160 [2021-11-13 01:31:05,540 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1565 GetRequests, 1556 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-11-13 01:31:05,541 INFO L933 BasicCegarLoop]: 342 mSDtfsCounter, 401 mSDsluCounter, 1047 mSDsCounter, 0 mSdLazyCounter, 1052 mSolverCounterSat, 84 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 54081.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 1389 SdHoareTripleChecker+Invalid, 1137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.10ms SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1052 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 55476.04ms IncrementalHoareTripleChecker+Time [2021-11-13 01:31:05,541 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [401 Valid, 1389 Invalid, 1137 Unknown, 0 Unchecked, 11.10ms Time], IncrementalHoareTripleChecker [84 Valid, 1052 Invalid, 1 Unknown, 0 Unchecked, 55476.04ms Time] [2021-11-13 01:31:05,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10160 states. [2021-11-13 01:31:05,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10160 to 3901. [2021-11-13 01:31:05,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3901 states, 3900 states have (on average 1.5707692307692307) internal successors, (6126), 3900 states have internal predecessors, (6126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:31:05,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3901 states to 3901 states and 6126 transitions. [2021-11-13 01:31:05,866 INFO L78 Accepts]: Start accepts. Automaton has 3901 states and 6126 transitions. Word has length 782 [2021-11-13 01:31:05,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:31:05,867 INFO L470 AbstractCegarLoop]: Abstraction has 3901 states and 6126 transitions. [2021-11-13 01:31:05,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 38.0) internal successors, (266), 7 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:31:05,867 INFO L276 IsEmpty]: Start isEmpty. Operand 3901 states and 6126 transitions. [2021-11-13 01:31:05,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 783 [2021-11-13 01:31:05,881 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:31:05,881 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 20, 20, 20, 20, 20, 20, 19, 19, 18, 18, 17, 17, 16, 16, 16, 16, 16, 15, 15, 14, 14, 13, 13, 8, 8, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-11-13 01:31:05,989 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f4159e-4e05-48d4-873f-4710e1a4590d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-13 01:31:06,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f4159e-4e05-48d4-873f-4710e1a4590d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:31:06,103 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:31:06,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:31:06,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1585771787, now seen corresponding path program 1 times [2021-11-13 01:31:06,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:31:06,107 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1366455584] [2021-11-13 01:31:06,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:31:06,108 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:31:06,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f4159e-4e05-48d4-873f-4710e1a4590d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:31:06,109 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f4159e-4e05-48d4-873f-4710e1a4590d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:31:06,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f4159e-4e05-48d4-873f-4710e1a4590d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-13 01:33:57,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:33:57,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 1637 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-13 01:33:57,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:33:57,909 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-13 01:33:57,919 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-13 01:33:57,998 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:33:58,000 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 221 [2021-11-13 01:33:58,008 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:33:58,010 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 336 [2021-11-13 01:33:58,026 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 336 treesize of output 319 [2021-11-13 01:33:58,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,187 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 36 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 49 [2021-11-13 01:33:58,198 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:33:58,200 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 221 [2021-11-13 01:33:58,210 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 221 treesize of output 210 [2021-11-13 01:33:58,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,325 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 36 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 101 [2021-11-13 01:33:58,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,357 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 13 [2021-11-13 01:33:58,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,462 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 13 [2021-11-13 01:33:58,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:58,498 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 13 [2021-11-13 01:33:58,537 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-11-13 01:33:58,568 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2021-11-13 01:34:00,759 INFO L134 CoverageAnalysis]: Checked inductivity of 5702 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5702 trivial. 0 not checked. [2021-11-13 01:34:00,760 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:34:03,000 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:34:03,002 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 181 [2021-11-13 01:34:03,008 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:34:03,010 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 238 [2021-11-13 01:34:03,189 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:34:03,192 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 393 [2021-11-13 01:34:03,199 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:34:03,206 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 510 [2021-11-13 01:34:03,216 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:34:03,219 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 687 [2021-11-13 01:34:03,232 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:34:03,235 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 744 [2021-11-13 01:34:03,254 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:34:03,257 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 861 [2021-11-13 01:34:03,285 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:34:03,292 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1038 [2021-11-13 01:34:03,832 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 147 treesize of output 145 [2021-11-13 01:34:03,843 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 145 treesize of output 143