./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec9_product29.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec9_product29.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/bin/utaipan-UbGMyvGFUs --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 bf5a3f22f9d7a0aaa2c9864b464fdc1b701547a697c01ddf6ee0cf69e3554ef9 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:31:35,833 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:31:35,835 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:31:35,874 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:31:35,874 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:31:35,876 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:31:35,877 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:31:35,880 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:31:35,883 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:31:35,884 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:31:35,885 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:31:35,887 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:31:35,887 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:31:35,888 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:31:35,890 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:31:35,892 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:31:35,893 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:31:35,894 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:31:35,896 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:31:35,902 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:31:35,904 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:31:35,911 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:31:35,913 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:31:35,914 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:31:35,917 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:31:35,918 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:31:35,918 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:31:35,919 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:31:35,920 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:31:35,921 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:31:35,921 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:31:35,922 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:31:35,923 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:31:35,924 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:31:35,925 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:31:35,926 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:31:35,932 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:31:35,932 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:31:35,933 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:31:35,934 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:31:35,935 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:31:35,936 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-19 14:31:35,984 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:31:35,985 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:31:35,985 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:31:35,985 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:31:35,986 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:31:35,986 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:31:35,986 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:31:35,986 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 14:31:35,986 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:31:35,986 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:31:35,987 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 14:31:35,987 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 14:31:35,987 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:31:35,987 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 14:31:35,988 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 14:31:35,988 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 14:31:35,988 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:31:35,989 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 14:31:35,989 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 14:31:35,989 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 14:31:35,989 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:31:35,989 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:31:35,990 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:31:35,990 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:31:35,990 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:31:35,990 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 14:31:35,990 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:31:35,991 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:31:35,991 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:31:35,991 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:31:35,991 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:31:35,991 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:31:35,992 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:31:35,992 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:31:35,992 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:31:35,992 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 14:31:35,993 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 14:31:35,993 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:31:35,993 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:31:35,993 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:31:35,993 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_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf5a3f22f9d7a0aaa2c9864b464fdc1b701547a697c01ddf6ee0cf69e3554ef9 [2021-11-19 14:31:36,258 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:31:36,282 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:31:36,284 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:31:36,284 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:31:36,286 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:31:36,288 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/product-lines/elevator_spec9_product29.cil.c [2021-11-19 14:31:36,386 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/bin/utaipan-UbGMyvGFUs/data/e320679bf/1126325ff54f45dd90b7ec0600235da2/FLAG82c7f8eb9 [2021-11-19 14:31:36,997 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:31:36,998 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/sv-benchmarks/c/product-lines/elevator_spec9_product29.cil.c [2021-11-19 14:31:37,021 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/bin/utaipan-UbGMyvGFUs/data/e320679bf/1126325ff54f45dd90b7ec0600235da2/FLAG82c7f8eb9 [2021-11-19 14:31:37,200 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/bin/utaipan-UbGMyvGFUs/data/e320679bf/1126325ff54f45dd90b7ec0600235da2 [2021-11-19 14:31:37,202 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:31:37,204 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:31:37,206 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:31:37,206 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:31:37,209 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:31:37,210 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:31:37" (1/1) ... [2021-11-19 14:31:37,211 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b6dcbaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:31:37, skipping insertion in model container [2021-11-19 14:31:37,211 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:31:37" (1/1) ... [2021-11-19 14:31:37,227 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:31:37,316 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:31:37,494 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/sv-benchmarks/c/product-lines/elevator_spec9_product29.cil.c[1700,1713] [2021-11-19 14:31:37,935 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:31:37,949 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) [2021-11-19 14:31:37,950 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@385aa5b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:31:37, skipping insertion in model container [2021-11-19 14:31:37,950 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:31:37,951 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 14:31:37,954 INFO L158 Benchmark]: Toolchain (without parser) took 747.53ms. Allocated memory was 94.4MB in the beginning and 127.9MB in the end (delta: 33.6MB). Free memory was 56.4MB in the beginning and 87.4MB in the end (delta: -31.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-19 14:31:37,956 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 94.4MB. Free memory was 66.7MB in the beginning and 66.7MB in the end (delta: 28.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:31:37,957 INFO L158 Benchmark]: CACSL2BoogieTranslator took 744.83ms. Allocated memory was 94.4MB in the beginning and 127.9MB in the end (delta: 33.6MB). Free memory was 56.1MB in the beginning and 87.4MB in the end (delta: -31.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-19 14:31:37,966 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 94.4MB. Free memory was 66.7MB in the beginning and 66.7MB in the end (delta: 28.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 744.83ms. Allocated memory was 94.4MB in the beginning and 127.9MB in the end (delta: 33.6MB). Free memory was 56.1MB in the beginning and 87.4MB in the end (delta: -31.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1419]: 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_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec9_product29.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/bin/utaipan-UbGMyvGFUs --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 bf5a3f22f9d7a0aaa2c9864b464fdc1b701547a697c01ddf6ee0cf69e3554ef9 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:31:40,069 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:31:40,073 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:31:40,132 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:31:40,133 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:31:40,138 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:31:40,139 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:31:40,144 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:31:40,147 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:31:40,157 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:31:40,159 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:31:40,161 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:31:40,162 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:31:40,165 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:31:40,169 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:31:40,173 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:31:40,174 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:31:40,176 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:31:40,178 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:31:40,185 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:31:40,187 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:31:40,189 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:31:40,191 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:31:40,194 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:31:40,199 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:31:40,200 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:31:40,200 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:31:40,202 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:31:40,203 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:31:40,204 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:31:40,204 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:31:40,205 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:31:40,207 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:31:40,208 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:31:40,209 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:31:40,209 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:31:40,210 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:31:40,210 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:31:40,211 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:31:40,213 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:31:40,213 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:31:40,214 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-19 14:31:40,256 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:31:40,257 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:31:40,258 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:31:40,258 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:31:40,259 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:31:40,259 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:31:40,259 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:31:40,259 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:31:40,260 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:31:40,260 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:31:40,263 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:31:40,263 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 14:31:40,263 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 14:31:40,263 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:31:40,264 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:31:40,264 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:31:40,264 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:31:40,264 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:31:40,264 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 14:31:40,265 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 14:31:40,265 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 14:31:40,265 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:31:40,265 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:31:40,266 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:31:40,266 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:31:40,266 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 14:31:40,266 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:31:40,267 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:31:40,267 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:31:40,267 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:31:40,267 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:31:40,267 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 14:31:40,268 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 14:31:40,268 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:31:40,268 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:31:40,269 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:31:40,269 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_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf5a3f22f9d7a0aaa2c9864b464fdc1b701547a697c01ddf6ee0cf69e3554ef9 [2021-11-19 14:31:40,619 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:31:40,640 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:31:40,642 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:31:40,643 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:31:40,644 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:31:40,645 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/product-lines/elevator_spec9_product29.cil.c [2021-11-19 14:31:40,711 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/bin/utaipan-UbGMyvGFUs/data/39b69a9c2/bf2aa13fe7a043bdb2c434481fd5a47e/FLAG7b804bd9c [2021-11-19 14:31:41,450 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:31:41,450 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/sv-benchmarks/c/product-lines/elevator_spec9_product29.cil.c [2021-11-19 14:31:41,480 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/bin/utaipan-UbGMyvGFUs/data/39b69a9c2/bf2aa13fe7a043bdb2c434481fd5a47e/FLAG7b804bd9c [2021-11-19 14:31:41,592 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/bin/utaipan-UbGMyvGFUs/data/39b69a9c2/bf2aa13fe7a043bdb2c434481fd5a47e [2021-11-19 14:31:41,594 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:31:41,595 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:31:41,596 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:31:41,596 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:31:41,608 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:31:41,609 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:31:41" (1/1) ... [2021-11-19 14:31:41,610 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79f50a13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:31:41, skipping insertion in model container [2021-11-19 14:31:41,610 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:31:41" (1/1) ... [2021-11-19 14:31:41,619 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:31:41,718 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:31:41,922 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/sv-benchmarks/c/product-lines/elevator_spec9_product29.cil.c[1700,1713] [2021-11-19 14:31:42,503 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:31:42,517 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 14:31:42,541 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:31:42,544 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/sv-benchmarks/c/product-lines/elevator_spec9_product29.cil.c[1700,1713] [2021-11-19 14:31:42,660 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:31:42,670 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 14:31:42,681 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/sv-benchmarks/c/product-lines/elevator_spec9_product29.cil.c[1700,1713] [2021-11-19 14:31:42,765 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:31:42,795 INFO L208 MainTranslator]: Completed translation [2021-11-19 14:31:42,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:31:42 WrapperNode [2021-11-19 14:31:42,796 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:31:42,797 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 14:31:42,797 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 14:31:42,797 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 14:31:42,804 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:31:42" (1/1) ... [2021-11-19 14:31:42,867 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:31:42" (1/1) ... [2021-11-19 14:31:42,919 INFO L137 Inliner]: procedures = 95, calls = 338, calls flagged for inlining = 27, calls inlined = 24, statements flattened = 817 [2021-11-19 14:31:42,920 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 14:31:42,920 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 14:31:42,921 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 14:31:42,921 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 14:31:42,929 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:31:42" (1/1) ... [2021-11-19 14:31:42,929 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:31:42" (1/1) ... [2021-11-19 14:31:42,937 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:31:42" (1/1) ... [2021-11-19 14:31:42,938 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:31:42" (1/1) ... [2021-11-19 14:31:42,970 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:31:42" (1/1) ... [2021-11-19 14:31:42,998 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:31:42" (1/1) ... [2021-11-19 14:31:43,002 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:31:42" (1/1) ... [2021-11-19 14:31:43,031 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 14:31:43,032 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 14:31:43,032 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 14:31:43,032 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 14:31:43,033 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:31:42" (1/1) ... [2021-11-19 14:31:43,039 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:31:43,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:31:43,068 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 14:31:43,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 14:31:43,116 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 14:31:43,117 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2021-11-19 14:31:43,117 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2021-11-19 14:31:43,117 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2021-11-19 14:31:43,117 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2021-11-19 14:31:43,117 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2021-11-19 14:31:43,118 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2021-11-19 14:31:43,118 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2021-11-19 14:31:43,118 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2021-11-19 14:31:43,118 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2021-11-19 14:31:43,118 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2021-11-19 14:31:43,119 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2021-11-19 14:31:43,119 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2021-11-19 14:31:43,119 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-11-19 14:31:43,119 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-11-19 14:31:43,119 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-11-19 14:31:43,119 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-11-19 14:31:43,120 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-11-19 14:31:43,120 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-11-19 14:31:43,120 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2021-11-19 14:31:43,120 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2021-11-19 14:31:43,120 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2021-11-19 14:31:43,120 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2021-11-19 14:31:43,121 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2021-11-19 14:31:43,121 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2021-11-19 14:31:43,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 14:31:43,121 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2021-11-19 14:31:43,121 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2021-11-19 14:31:43,121 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2021-11-19 14:31:43,122 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2021-11-19 14:31:43,122 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2021-11-19 14:31:43,122 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2021-11-19 14:31:43,122 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2021-11-19 14:31:43,122 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2021-11-19 14:31:43,122 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2021-11-19 14:31:43,123 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2021-11-19 14:31:43,123 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2021-11-19 14:31:43,123 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2021-11-19 14:31:43,123 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2021-11-19 14:31:43,123 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2021-11-19 14:31:43,123 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2021-11-19 14:31:43,124 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2021-11-19 14:31:43,124 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2021-11-19 14:31:43,124 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2021-11-19 14:31:43,124 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2021-11-19 14:31:43,124 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2021-11-19 14:31:43,124 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2021-11-19 14:31:43,125 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2021-11-19 14:31:43,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 14:31:43,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 14:31:43,125 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2021-11-19 14:31:43,125 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2021-11-19 14:31:43,306 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 14:31:43,309 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 14:31:44,620 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 14:31:44,641 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 14:31:44,641 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-19 14:31:44,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:31:44 BoogieIcfgContainer [2021-11-19 14:31:44,646 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 14:31:44,647 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 14:31:44,648 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 14:31:44,650 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 14:31:44,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:31:41" (1/3) ... [2021-11-19 14:31:44,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a142785 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:31:44, skipping insertion in model container [2021-11-19 14:31:44,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:31:42" (2/3) ... [2021-11-19 14:31:44,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a142785 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:31:44, skipping insertion in model container [2021-11-19 14:31:44,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:31:44" (3/3) ... [2021-11-19 14:31:44,654 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec9_product29.cil.c [2021-11-19 14:31:44,659 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 14:31:44,660 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 14:31:44,726 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 14:31:44,735 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 [2021-11-19 14:31:44,736 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 14:31:44,776 INFO L276 IsEmpty]: Start isEmpty. Operand has 563 states, 445 states have (on average 1.698876404494382) internal successors, (756), 466 states have internal predecessors, (756), 92 states have call successors, (92), 24 states have call predecessors, (92), 24 states have return successors, (92), 86 states have call predecessors, (92), 92 states have call successors, (92) [2021-11-19 14:31:44,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-19 14:31:44,802 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:31:44,803 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:31:44,804 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:31:44,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:31:44,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1610874664, now seen corresponding path program 1 times [2021-11-19 14:31:44,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:31:44,823 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [948044840] [2021-11-19 14:31:44,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:31:44,824 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:31:44,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:31:44,827 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:31:44,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 14:31:45,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:31:45,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 733 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-19 14:31:45,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:31:45,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:31:45,543 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:31:45,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:31:45,823 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:31:45,823 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [948044840] [2021-11-19 14:31:45,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [948044840] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:31:45,824 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:31:45,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 14:31:45,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496995329] [2021-11-19 14:31:45,827 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:31:45,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 14:31:45,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:31:45,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 14:31:45,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 14:31:45,870 INFO L87 Difference]: Start difference. First operand has 563 states, 445 states have (on average 1.698876404494382) internal successors, (756), 466 states have internal predecessors, (756), 92 states have call successors, (92), 24 states have call predecessors, (92), 24 states have return successors, (92), 86 states have call predecessors, (92), 92 states have call successors, (92) Second operand has 2 states, 2 states have (on average 33.5) internal successors, (67), 2 states have internal predecessors, (67), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2021-11-19 14:31:45,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:31:45,972 INFO L93 Difference]: Finished difference Result 584 states and 970 transitions. [2021-11-19 14:31:45,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 14:31:45,975 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 33.5) internal successors, (67), 2 states have internal predecessors, (67), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 90 [2021-11-19 14:31:45,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:31:46,005 INFO L225 Difference]: With dead ends: 584 [2021-11-19 14:31:46,005 INFO L226 Difference]: Without dead ends: 555 [2021-11-19 14:31:46,010 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 14:31:46,014 INFO L933 BasicCegarLoop]: 931 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 931 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:31:46,016 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 931 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:31:46,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2021-11-19 14:31:46,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 555. [2021-11-19 14:31:46,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 555 states, 439 states have (on average 1.6970387243735763) internal successors, (745), 458 states have internal predecessors, (745), 92 states have call successors, (92), 24 states have call predecessors, (92), 23 states have return successors, (87), 85 states have call predecessors, (87), 87 states have call successors, (87) [2021-11-19 14:31:46,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 924 transitions. [2021-11-19 14:31:46,120 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 924 transitions. Word has length 90 [2021-11-19 14:31:46,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:31:46,122 INFO L470 AbstractCegarLoop]: Abstraction has 555 states and 924 transitions. [2021-11-19 14:31:46,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 33.5) internal successors, (67), 2 states have internal predecessors, (67), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2021-11-19 14:31:46,122 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 924 transitions. [2021-11-19 14:31:46,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-19 14:31:46,137 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:31:46,138 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:31:46,157 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 14:31:46,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:31:46,339 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:31:46,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:31:46,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1312643929, now seen corresponding path program 1 times [2021-11-19 14:31:46,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:31:46,341 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [641803591] [2021-11-19 14:31:46,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:31:46,342 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:31:46,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:31:46,343 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:31:46,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 14:31:46,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:31:46,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 735 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:31:46,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:31:46,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:31:46,989 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:31:47,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:31:47,284 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:31:47,284 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [641803591] [2021-11-19 14:31:47,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [641803591] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:31:47,284 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:31:47,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-19 14:31:47,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233503455] [2021-11-19 14:31:47,285 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:31:47,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:31:47,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:31:47,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:31:47,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:31:47,288 INFO L87 Difference]: Start difference. First operand 555 states and 924 transitions. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 2 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-19 14:31:47,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:31:47,417 INFO L93 Difference]: Finished difference Result 1094 states and 1826 transitions. [2021-11-19 14:31:47,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:31:47,418 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 2 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 92 [2021-11-19 14:31:47,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:31:47,425 INFO L225 Difference]: With dead ends: 1094 [2021-11-19 14:31:47,425 INFO L226 Difference]: Without dead ends: 555 [2021-11-19 14:31:47,433 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:31:47,435 INFO L933 BasicCegarLoop]: 911 mSDtfsCounter, 30 mSDsluCounter, 1818 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 2729 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:31:47,436 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 2729 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:31:47,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2021-11-19 14:31:47,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 555. [2021-11-19 14:31:47,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 555 states, 439 states have (on average 1.683371298405467) internal successors, (739), 458 states have internal predecessors, (739), 92 states have call successors, (92), 24 states have call predecessors, (92), 23 states have return successors, (87), 85 states have call predecessors, (87), 87 states have call successors, (87) [2021-11-19 14:31:47,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 918 transitions. [2021-11-19 14:31:47,488 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 918 transitions. Word has length 92 [2021-11-19 14:31:47,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:31:47,489 INFO L470 AbstractCegarLoop]: Abstraction has 555 states and 918 transitions. [2021-11-19 14:31:47,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 2 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-19 14:31:47,490 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 918 transitions. [2021-11-19 14:31:47,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-19 14:31:47,495 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:31:47,495 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:31:47,522 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 14:31:47,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:31:47,711 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:31:47,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:31:47,712 INFO L85 PathProgramCache]: Analyzing trace with hash 803133512, now seen corresponding path program 1 times [2021-11-19 14:31:47,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:31:47,713 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [791976784] [2021-11-19 14:31:47,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:31:47,713 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:31:47,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:31:47,715 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:31:47,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 14:31:48,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:31:48,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 740 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 14:31:48,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:31:48,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:31:48,310 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:31:48,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:31:48,679 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:31:48,680 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [791976784] [2021-11-19 14:31:48,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [791976784] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:31:48,680 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:31:48,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 11 [2021-11-19 14:31:48,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684899286] [2021-11-19 14:31:48,681 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:31:48,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 14:31:48,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:31:48,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 14:31:48,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:31:48,686 INFO L87 Difference]: Start difference. First operand 555 states and 918 transitions. Second operand has 11 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 4 states have call successors, (21), 2 states have call predecessors, (21), 5 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2021-11-19 14:31:48,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:31:48,896 INFO L93 Difference]: Finished difference Result 1052 states and 1743 transitions. [2021-11-19 14:31:48,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 14:31:48,898 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 4 states have call successors, (21), 2 states have call predecessors, (21), 5 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) Word has length 97 [2021-11-19 14:31:48,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:31:48,906 INFO L225 Difference]: With dead ends: 1052 [2021-11-19 14:31:48,907 INFO L226 Difference]: Without dead ends: 549 [2021-11-19 14:31:48,911 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-11-19 14:31:48,915 INFO L933 BasicCegarLoop]: 905 mSDtfsCounter, 194 mSDsluCounter, 6239 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 7144 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:31:48,916 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [195 Valid, 7144 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:31:48,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2021-11-19 14:31:48,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 549. [2021-11-19 14:31:48,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 433 states have (on average 1.6766743648960738) internal successors, (726), 452 states have internal predecessors, (726), 92 states have call successors, (92), 24 states have call predecessors, (92), 23 states have return successors, (87), 85 states have call predecessors, (87), 87 states have call successors, (87) [2021-11-19 14:31:48,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 905 transitions. [2021-11-19 14:31:48,979 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 905 transitions. Word has length 97 [2021-11-19 14:31:48,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:31:48,980 INFO L470 AbstractCegarLoop]: Abstraction has 549 states and 905 transitions. [2021-11-19 14:31:48,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 4 states have call successors, (21), 2 states have call predecessors, (21), 5 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2021-11-19 14:31:48,980 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 905 transitions. [2021-11-19 14:31:48,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-19 14:31:48,990 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:31:48,990 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:31:49,014 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 14:31:49,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:31:49,214 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:31:49,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:31:49,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1829178420, now seen corresponding path program 1 times [2021-11-19 14:31:49,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:31:49,216 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1474832515] [2021-11-19 14:31:49,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:31:49,216 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:31:49,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:31:49,220 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:31:49,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 14:31:49,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:31:49,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 741 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:31:49,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:31:49,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:31:49,824 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:31:50,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:31:50,111 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:31:50,111 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1474832515] [2021-11-19 14:31:50,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1474832515] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:31:50,113 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:31:50,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-19 14:31:50,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271700528] [2021-11-19 14:31:50,113 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:31:50,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:31:50,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:31:50,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:31:50,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:31:50,118 INFO L87 Difference]: Start difference. First operand 549 states and 905 transitions. Second operand has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 2 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-19 14:31:50,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:31:50,302 INFO L93 Difference]: Finished difference Result 1055 states and 1744 transitions. [2021-11-19 14:31:50,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:31:50,303 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 2 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 98 [2021-11-19 14:31:50,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:31:50,309 INFO L225 Difference]: With dead ends: 1055 [2021-11-19 14:31:50,309 INFO L226 Difference]: Without dead ends: 549 [2021-11-19 14:31:50,315 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:31:50,320 INFO L933 BasicCegarLoop]: 856 mSDtfsCounter, 206 mSDsluCounter, 876 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 1732 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:31:50,321 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [206 Valid, 1732 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:31:50,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2021-11-19 14:31:50,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 549. [2021-11-19 14:31:50,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 433 states have (on average 1.6212471131639723) internal successors, (702), 452 states have internal predecessors, (702), 92 states have call successors, (92), 24 states have call predecessors, (92), 23 states have return successors, (87), 85 states have call predecessors, (87), 87 states have call successors, (87) [2021-11-19 14:31:50,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 881 transitions. [2021-11-19 14:31:50,352 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 881 transitions. Word has length 98 [2021-11-19 14:31:50,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:31:50,353 INFO L470 AbstractCegarLoop]: Abstraction has 549 states and 881 transitions. [2021-11-19 14:31:50,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 2 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-19 14:31:50,353 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 881 transitions. [2021-11-19 14:31:50,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-19 14:31:50,360 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:31:50,360 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:31:50,377 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 14:31:50,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:31:50,574 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:31:50,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:31:50,575 INFO L85 PathProgramCache]: Analyzing trace with hash -710022503, now seen corresponding path program 1 times [2021-11-19 14:31:50,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:31:50,576 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1203624017] [2021-11-19 14:31:50,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:31:50,576 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:31:50,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:31:50,577 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:31:50,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 14:31:50,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:31:50,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 742 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 14:31:50,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:31:51,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:31:51,143 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:31:51,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:31:51,534 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:31:51,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1203624017] [2021-11-19 14:31:51,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1203624017] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:31:51,535 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:31:51,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 8 [2021-11-19 14:31:51,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192095583] [2021-11-19 14:31:51,535 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:31:51,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:31:51,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:31:51,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:31:51,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:31:51,537 INFO L87 Difference]: Start difference. First operand 549 states and 881 transitions. Second operand has 8 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 states have internal predecessors, (125), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-19 14:31:51,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:31:51,654 INFO L93 Difference]: Finished difference Result 1046 states and 1706 transitions. [2021-11-19 14:31:51,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 14:31:51,656 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 states have internal predecessors, (125), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 100 [2021-11-19 14:31:51,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:31:51,661 INFO L225 Difference]: With dead ends: 1046 [2021-11-19 14:31:51,661 INFO L226 Difference]: Without dead ends: 528 [2021-11-19 14:31:51,664 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:31:51,665 INFO L933 BasicCegarLoop]: 869 mSDtfsCounter, 147 mSDsluCounter, 3451 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 4320 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:31:51,666 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 4320 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:31:51,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2021-11-19 14:31:51,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 528. [2021-11-19 14:31:51,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 412 states have (on average 1.6432038834951457) internal successors, (677), 431 states have internal predecessors, (677), 92 states have call successors, (92), 24 states have call predecessors, (92), 23 states have return successors, (87), 85 states have call predecessors, (87), 87 states have call successors, (87) [2021-11-19 14:31:51,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 856 transitions. [2021-11-19 14:31:51,694 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 856 transitions. Word has length 100 [2021-11-19 14:31:51,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:31:51,700 INFO L470 AbstractCegarLoop]: Abstraction has 528 states and 856 transitions. [2021-11-19 14:31:51,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 states have internal predecessors, (125), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-19 14:31:51,701 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 856 transitions. [2021-11-19 14:31:51,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-19 14:31:51,705 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:31:51,705 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:31:51,723 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 14:31:51,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:31:51,919 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:31:51,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:31:51,919 INFO L85 PathProgramCache]: Analyzing trace with hash 145920181, now seen corresponding path program 1 times [2021-11-19 14:31:51,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:31:51,920 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2018227019] [2021-11-19 14:31:51,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:31:51,920 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:31:51,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:31:51,921 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:31:51,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 14:31:52,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:31:52,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 746 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 14:31:52,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:31:52,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:31:52,495 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:31:52,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:31:52,979 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:31:52,979 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2018227019] [2021-11-19 14:31:52,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2018227019] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:31:52,979 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:31:52,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 13 [2021-11-19 14:31:52,979 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922475302] [2021-11-19 14:31:52,979 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:31:52,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 14:31:52,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:31:52,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 14:31:52,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-11-19 14:31:52,981 INFO L87 Difference]: Start difference. First operand 528 states and 856 transitions. Second operand has 13 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 4 states have call successors, (21), 2 states have call predecessors, (21), 5 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2021-11-19 14:31:53,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:31:53,159 INFO L93 Difference]: Finished difference Result 1019 states and 1670 transitions. [2021-11-19 14:31:53,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 14:31:53,160 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 4 states have call successors, (21), 2 states have call predecessors, (21), 5 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) Word has length 103 [2021-11-19 14:31:53,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:31:53,165 INFO L225 Difference]: With dead ends: 1019 [2021-11-19 14:31:53,165 INFO L226 Difference]: Without dead ends: 528 [2021-11-19 14:31:53,168 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2021-11-19 14:31:53,169 INFO L933 BasicCegarLoop]: 841 mSDtfsCounter, 59 mSDsluCounter, 5866 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 6707 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:31:53,170 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 6707 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:31:53,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2021-11-19 14:31:53,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 528. [2021-11-19 14:31:53,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 412 states have (on average 1.6407766990291262) internal successors, (676), 431 states have internal predecessors, (676), 92 states have call successors, (92), 24 states have call predecessors, (92), 23 states have return successors, (87), 85 states have call predecessors, (87), 87 states have call successors, (87) [2021-11-19 14:31:53,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 855 transitions. [2021-11-19 14:31:53,194 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 855 transitions. Word has length 103 [2021-11-19 14:31:53,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:31:53,194 INFO L470 AbstractCegarLoop]: Abstraction has 528 states and 855 transitions. [2021-11-19 14:31:53,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 4 states have call successors, (21), 2 states have call predecessors, (21), 5 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2021-11-19 14:31:53,195 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 855 transitions. [2021-11-19 14:31:53,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-19 14:31:53,199 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:31:53,199 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:31:53,219 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 14:31:53,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:31:53,416 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:31:53,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:31:53,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1920540339, now seen corresponding path program 1 times [2021-11-19 14:31:53,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:31:53,417 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1150467636] [2021-11-19 14:31:53,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:31:53,417 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:31:53,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:31:53,418 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:31:53,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 14:31:53,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:31:53,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 747 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-19 14:31:53,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:31:54,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:31:54,211 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:31:54,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:31:54,934 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:31:54,934 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1150467636] [2021-11-19 14:31:54,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1150467636] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:31:54,934 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:31:54,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 8] imperfect sequences [] total 14 [2021-11-19 14:31:54,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296306982] [2021-11-19 14:31:54,935 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:31:54,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-19 14:31:54,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:31:54,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-19 14:31:54,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-11-19 14:31:54,936 INFO L87 Difference]: Start difference. First operand 528 states and 855 transitions. Second operand has 14 states, 14 states have (on average 10.142857142857142) internal successors, (142), 12 states have internal predecessors, (142), 8 states have call successors, (23), 5 states have call predecessors, (23), 8 states have return successors, (22), 10 states have call predecessors, (22), 7 states have call successors, (22) [2021-11-19 14:31:58,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:31:58,690 INFO L93 Difference]: Finished difference Result 1140 states and 1899 transitions. [2021-11-19 14:31:58,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 14:31:58,691 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 10.142857142857142) internal successors, (142), 12 states have internal predecessors, (142), 8 states have call successors, (23), 5 states have call predecessors, (23), 8 states have return successors, (22), 10 states have call predecessors, (22), 7 states have call successors, (22) Word has length 104 [2021-11-19 14:31:58,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:31:58,697 INFO L225 Difference]: With dead ends: 1140 [2021-11-19 14:31:58,698 INFO L226 Difference]: Without dead ends: 657 [2021-11-19 14:31:58,701 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2021-11-19 14:31:58,702 INFO L933 BasicCegarLoop]: 928 mSDtfsCounter, 2076 mSDsluCounter, 1768 mSDsCounter, 0 mSdLazyCounter, 3418 mSolverCounterSat, 677 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2076 SdHoareTripleChecker+Valid, 2696 SdHoareTripleChecker+Invalid, 4095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 677 IncrementalHoareTripleChecker+Valid, 3418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-11-19 14:31:58,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2076 Valid, 2696 Invalid, 4095 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [677 Valid, 3418 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2021-11-19 14:31:58,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2021-11-19 14:31:58,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 532. [2021-11-19 14:31:58,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 415 states have (on average 1.636144578313253) internal successors, (679), 434 states have internal predecessors, (679), 92 states have call successors, (92), 24 states have call predecessors, (92), 24 states have return successors, (103), 86 states have call predecessors, (103), 87 states have call successors, (103) [2021-11-19 14:31:58,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 874 transitions. [2021-11-19 14:31:58,756 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 874 transitions. Word has length 104 [2021-11-19 14:31:58,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:31:58,757 INFO L470 AbstractCegarLoop]: Abstraction has 532 states and 874 transitions. [2021-11-19 14:31:58,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.142857142857142) internal successors, (142), 12 states have internal predecessors, (142), 8 states have call successors, (23), 5 states have call predecessors, (23), 8 states have return successors, (22), 10 states have call predecessors, (22), 7 states have call successors, (22) [2021-11-19 14:31:58,758 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 874 transitions. [2021-11-19 14:31:58,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-19 14:31:58,761 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:31:58,762 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:31:58,788 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 14:31:58,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:31:58,979 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:31:58,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:31:58,979 INFO L85 PathProgramCache]: Analyzing trace with hash -1056707900, now seen corresponding path program 1 times [2021-11-19 14:31:58,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:31:58,980 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1169108711] [2021-11-19 14:31:58,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:31:58,980 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:31:58,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:31:58,982 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:31:58,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 14:31:59,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:31:59,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 748 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 14:31:59,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:31:59,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:31:59,568 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:32:00,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:32:00,033 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:32:00,033 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1169108711] [2021-11-19 14:32:00,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1169108711] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:32:00,033 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:32:00,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 10 [2021-11-19 14:32:00,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284295285] [2021-11-19 14:32:00,034 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:32:00,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 14:32:00,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:32:00,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 14:32:00,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:32:00,036 INFO L87 Difference]: Start difference. First operand 532 states and 874 transitions. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 6 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (16), 4 states have call predecessors, (16), 5 states have call successors, (16) [2021-11-19 14:32:06,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:32:06,495 INFO L93 Difference]: Finished difference Result 1927 states and 3289 transitions. [2021-11-19 14:32:06,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-19 14:32:06,498 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 6 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (16), 4 states have call predecessors, (16), 5 states have call successors, (16) Word has length 105 [2021-11-19 14:32:06,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:32:06,526 INFO L225 Difference]: With dead ends: 1927 [2021-11-19 14:32:06,527 INFO L226 Difference]: Without dead ends: 1440 [2021-11-19 14:32:06,533 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=128, Invalid=292, Unknown=0, NotChecked=0, Total=420 [2021-11-19 14:32:06,533 INFO L933 BasicCegarLoop]: 1406 mSDtfsCounter, 3014 mSDsluCounter, 2345 mSDsCounter, 0 mSdLazyCounter, 5263 mSolverCounterSat, 850 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3091 SdHoareTripleChecker+Valid, 3751 SdHoareTripleChecker+Invalid, 6113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 850 IncrementalHoareTripleChecker+Valid, 5263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:32:06,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3091 Valid, 3751 Invalid, 6113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [850 Valid, 5263 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2021-11-19 14:32:06,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1440 states. [2021-11-19 14:32:06,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1440 to 1349. [2021-11-19 14:32:06,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1349 states, 1048 states have (on average 1.6469465648854962) internal successors, (1726), 1096 states have internal predecessors, (1726), 236 states have call successors, (236), 63 states have call predecessors, (236), 64 states have return successors, (260), 226 states have call predecessors, (260), 231 states have call successors, (260) [2021-11-19 14:32:06,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1349 states to 1349 states and 2222 transitions. [2021-11-19 14:32:06,662 INFO L78 Accepts]: Start accepts. Automaton has 1349 states and 2222 transitions. Word has length 105 [2021-11-19 14:32:06,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:32:06,663 INFO L470 AbstractCegarLoop]: Abstraction has 1349 states and 2222 transitions. [2021-11-19 14:32:06,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 6 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (16), 4 states have call predecessors, (16), 5 states have call successors, (16) [2021-11-19 14:32:06,663 INFO L276 IsEmpty]: Start isEmpty. Operand 1349 states and 2222 transitions. [2021-11-19 14:32:06,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-19 14:32:06,667 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:32:06,667 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:32:06,685 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 14:32:06,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:32:06,886 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:32:06,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:32:06,887 INFO L85 PathProgramCache]: Analyzing trace with hash 555859701, now seen corresponding path program 1 times [2021-11-19 14:32:06,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:32:06,887 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1058982803] [2021-11-19 14:32:06,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:32:06,888 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:32:06,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:32:06,889 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:32:06,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 14:32:07,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:32:07,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 752 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 14:32:07,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:32:09,430 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 14:32:09,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:32:12,999 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 14:32:12,999 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:32:12,999 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1058982803] [2021-11-19 14:32:12,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1058982803] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:32:12,999 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:32:13,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-11-19 14:32:13,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897733898] [2021-11-19 14:32:13,000 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:32:13,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 14:32:13,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:32:13,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 14:32:13,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:32:13,002 INFO L87 Difference]: Start difference. First operand 1349 states and 2222 transitions. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 9 states have call successors, (25), 6 states have call predecessors, (25), 5 states have return successors, (24), 7 states have call predecessors, (24), 8 states have call successors, (24) [2021-11-19 14:32:31,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:32:31,962 INFO L93 Difference]: Finished difference Result 4497 states and 7540 transitions. [2021-11-19 14:32:31,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 14:32:31,966 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 9 states have call successors, (25), 6 states have call predecessors, (25), 5 states have return successors, (24), 7 states have call predecessors, (24), 8 states have call successors, (24) Word has length 107 [2021-11-19 14:32:31,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:32:31,995 INFO L225 Difference]: With dead ends: 4497 [2021-11-19 14:32:31,996 INFO L226 Difference]: Without dead ends: 3193 [2021-11-19 14:32:32,004 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 203 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2021-11-19 14:32:32,005 INFO L933 BasicCegarLoop]: 1029 mSDtfsCounter, 2975 mSDsluCounter, 1583 mSDsCounter, 0 mSdLazyCounter, 4619 mSolverCounterSat, 759 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3041 SdHoareTripleChecker+Valid, 2612 SdHoareTripleChecker+Invalid, 5378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 759 IncrementalHoareTripleChecker+Valid, 4619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:32:32,006 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3041 Valid, 2612 Invalid, 5378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [759 Valid, 4619 Invalid, 0 Unknown, 0 Unchecked, 18.4s Time] [2021-11-19 14:32:32,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3193 states. [2021-11-19 14:32:32,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3193 to 2805. [2021-11-19 14:32:32,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2805 states, 2155 states have (on average 1.651508120649652) internal successors, (3559), 2253 states have internal predecessors, (3559), 533 states have call successors, (533), 111 states have call predecessors, (533), 116 states have return successors, (590), 499 states have call predecessors, (590), 528 states have call successors, (590) [2021-11-19 14:32:32,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2805 states to 2805 states and 4682 transitions. [2021-11-19 14:32:32,242 INFO L78 Accepts]: Start accepts. Automaton has 2805 states and 4682 transitions. Word has length 107 [2021-11-19 14:32:32,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:32:32,243 INFO L470 AbstractCegarLoop]: Abstraction has 2805 states and 4682 transitions. [2021-11-19 14:32:32,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 9 states have call successors, (25), 6 states have call predecessors, (25), 5 states have return successors, (24), 7 states have call predecessors, (24), 8 states have call successors, (24) [2021-11-19 14:32:32,243 INFO L276 IsEmpty]: Start isEmpty. Operand 2805 states and 4682 transitions. [2021-11-19 14:32:32,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-19 14:32:32,248 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:32:32,248 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:32:32,269 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 14:32:32,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:32:32,466 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:32:32,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:32:32,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1973312039, now seen corresponding path program 1 times [2021-11-19 14:32:32,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:32:32,467 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [368720724] [2021-11-19 14:32:32,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:32:32,467 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:32:32,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:32:32,468 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:32:32,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 14:32:32,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:32:32,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 758 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 14:32:32,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:32:33,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:32:33,219 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:32:33,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:32:33,820 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:32:33,820 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [368720724] [2021-11-19 14:32:33,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [368720724] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:32:33,821 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:32:33,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 8] imperfect sequences [] total 14 [2021-11-19 14:32:33,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203733556] [2021-11-19 14:32:33,821 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:32:33,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-19 14:32:33,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:32:33,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-19 14:32:33,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-11-19 14:32:33,822 INFO L87 Difference]: Start difference. First operand 2805 states and 4682 transitions. Second operand has 14 states, 14 states have (on average 11.214285714285714) internal successors, (157), 12 states have internal predecessors, (157), 8 states have call successors, (25), 6 states have call predecessors, (25), 7 states have return successors, (24), 10 states have call predecessors, (24), 7 states have call successors, (24) [2021-11-19 14:32:43,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:32:43,688 INFO L93 Difference]: Finished difference Result 10264 states and 17701 transitions. [2021-11-19 14:32:43,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-19 14:32:43,690 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 11.214285714285714) internal successors, (157), 12 states have internal predecessors, (157), 8 states have call successors, (25), 6 states have call predecessors, (25), 7 states have return successors, (24), 10 states have call predecessors, (24), 7 states have call successors, (24) Word has length 111 [2021-11-19 14:32:43,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:32:43,750 INFO L225 Difference]: With dead ends: 10264 [2021-11-19 14:32:43,751 INFO L226 Difference]: Without dead ends: 7504 [2021-11-19 14:32:43,776 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=143, Invalid=457, Unknown=0, NotChecked=0, Total=600 [2021-11-19 14:32:43,777 INFO L933 BasicCegarLoop]: 1864 mSDtfsCounter, 5863 mSDsluCounter, 3118 mSDsCounter, 0 mSdLazyCounter, 7759 mSolverCounterSat, 2654 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5958 SdHoareTripleChecker+Valid, 4982 SdHoareTripleChecker+Invalid, 10413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2654 IncrementalHoareTripleChecker+Valid, 7759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:32:43,777 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5958 Valid, 4982 Invalid, 10413 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2654 Valid, 7759 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time] [2021-11-19 14:32:43,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7504 states. [2021-11-19 14:32:44,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7504 to 4726. [2021-11-19 14:32:44,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4726 states, 3501 states have (on average 1.6312482147957725) internal successors, (5711), 3709 states have internal predecessors, (5711), 1025 states have call successors, (1025), 169 states have call predecessors, (1025), 199 states have return successors, (1206), 1001 states have call predecessors, (1206), 1020 states have call successors, (1206) [2021-11-19 14:32:44,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4726 states to 4726 states and 7942 transitions. [2021-11-19 14:32:44,307 INFO L78 Accepts]: Start accepts. Automaton has 4726 states and 7942 transitions. Word has length 111 [2021-11-19 14:32:44,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:32:44,307 INFO L470 AbstractCegarLoop]: Abstraction has 4726 states and 7942 transitions. [2021-11-19 14:32:44,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 11.214285714285714) internal successors, (157), 12 states have internal predecessors, (157), 8 states have call successors, (25), 6 states have call predecessors, (25), 7 states have return successors, (24), 10 states have call predecessors, (24), 7 states have call successors, (24) [2021-11-19 14:32:44,308 INFO L276 IsEmpty]: Start isEmpty. Operand 4726 states and 7942 transitions. [2021-11-19 14:32:44,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-19 14:32:44,313 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:32:44,313 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:32:44,334 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-19 14:32:44,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:32:44,530 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:32:44,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:32:44,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1159195709, now seen corresponding path program 1 times [2021-11-19 14:32:44,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:32:44,531 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2077520474] [2021-11-19 14:32:44,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:32:44,532 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:32:44,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:32:44,533 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:32:44,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 14:32:44,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:32:44,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 759 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 14:32:44,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:32:45,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:32:45,240 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:32:45,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:32:45,682 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:32:45,682 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2077520474] [2021-11-19 14:32:45,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2077520474] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:32:45,682 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:32:45,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2021-11-19 14:32:45,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790604083] [2021-11-19 14:32:45,682 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:32:45,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:32:45,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:32:45,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:32:45,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:32:45,684 INFO L87 Difference]: Start difference. First operand 4726 states and 7942 transitions. Second operand has 8 states, 8 states have (on average 18.75) internal successors, (150), 8 states have internal predecessors, (150), 8 states have call successors, (25), 6 states have call predecessors, (25), 5 states have return successors, (24), 8 states have call predecessors, (24), 7 states have call successors, (24) [2021-11-19 14:32:50,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:32:50,232 INFO L93 Difference]: Finished difference Result 16446 states and 28496 transitions. [2021-11-19 14:32:50,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 14:32:50,233 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.75) internal successors, (150), 8 states have internal predecessors, (150), 8 states have call successors, (25), 6 states have call predecessors, (25), 5 states have return successors, (24), 8 states have call predecessors, (24), 7 states have call successors, (24) Word has length 112 [2021-11-19 14:32:50,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:32:50,384 INFO L225 Difference]: With dead ends: 16446 [2021-11-19 14:32:50,384 INFO L226 Difference]: Without dead ends: 11768 [2021-11-19 14:32:50,418 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:32:50,419 INFO L933 BasicCegarLoop]: 1693 mSDtfsCounter, 3022 mSDsluCounter, 1326 mSDsCounter, 0 mSdLazyCounter, 3219 mSolverCounterSat, 1016 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3116 SdHoareTripleChecker+Valid, 3019 SdHoareTripleChecker+Invalid, 4235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1016 IncrementalHoareTripleChecker+Valid, 3219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-11-19 14:32:50,419 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3116 Valid, 3019 Invalid, 4235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1016 Valid, 3219 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2021-11-19 14:32:50,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11768 states. [2021-11-19 14:32:51,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11768 to 9651. [2021-11-19 14:32:51,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9651 states, 6776 states have (on average 1.6111275088547816) internal successors, (10917), 7290 states have internal predecessors, (10917), 2508 states have call successors, (2508), 285 states have call predecessors, (2508), 366 states have return successors, (3092), 2504 states have call predecessors, (3092), 2503 states have call successors, (3092) [2021-11-19 14:32:51,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9651 states to 9651 states and 16517 transitions. [2021-11-19 14:32:51,587 INFO L78 Accepts]: Start accepts. Automaton has 9651 states and 16517 transitions. Word has length 112 [2021-11-19 14:32:51,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:32:51,587 INFO L470 AbstractCegarLoop]: Abstraction has 9651 states and 16517 transitions. [2021-11-19 14:32:51,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.75) internal successors, (150), 8 states have internal predecessors, (150), 8 states have call successors, (25), 6 states have call predecessors, (25), 5 states have return successors, (24), 8 states have call predecessors, (24), 7 states have call successors, (24) [2021-11-19 14:32:51,588 INFO L276 IsEmpty]: Start isEmpty. Operand 9651 states and 16517 transitions. [2021-11-19 14:32:51,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-19 14:32:51,592 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:32:51,592 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:32:51,613 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-19 14:32:51,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:32:51,806 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:32:51,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:32:51,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1569370538, now seen corresponding path program 1 times [2021-11-19 14:32:51,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:32:51,807 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [247411955] [2021-11-19 14:32:51,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:32:51,807 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:32:51,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:32:51,808 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:32:51,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-19 14:32:52,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:32:52,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 760 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 14:32:52,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:32:52,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:32:52,510 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:32:52,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:32:52,920 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:32:52,920 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [247411955] [2021-11-19 14:32:52,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [247411955] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:32:52,920 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:32:52,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2021-11-19 14:32:52,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971727402] [2021-11-19 14:32:52,921 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:32:52,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:32:52,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:32:52,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:32:52,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:32:52,923 INFO L87 Difference]: Start difference. First operand 9651 states and 16517 transitions. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 8 states have call successors, (25), 6 states have call predecessors, (25), 5 states have return successors, (24), 8 states have call predecessors, (24), 7 states have call successors, (24) [2021-11-19 14:32:59,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:32:59,048 INFO L93 Difference]: Finished difference Result 38233 states and 67765 transitions. [2021-11-19 14:32:59,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 14:32:59,049 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 8 states have call successors, (25), 6 states have call predecessors, (25), 5 states have return successors, (24), 8 states have call predecessors, (24), 7 states have call successors, (24) Word has length 113 [2021-11-19 14:32:59,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:32:59,243 INFO L225 Difference]: With dead ends: 38233 [2021-11-19 14:32:59,243 INFO L226 Difference]: Without dead ends: 28632 [2021-11-19 14:32:59,301 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:32:59,303 INFO L933 BasicCegarLoop]: 1701 mSDtfsCounter, 3121 mSDsluCounter, 1508 mSDsCounter, 0 mSdLazyCounter, 3333 mSolverCounterSat, 1095 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3216 SdHoareTripleChecker+Valid, 3209 SdHoareTripleChecker+Invalid, 4428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1095 IncrementalHoareTripleChecker+Valid, 3333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-11-19 14:32:59,303 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3216 Valid, 3209 Invalid, 4428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1095 Valid, 3333 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2021-11-19 14:32:59,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28632 states. [2021-11-19 14:33:01,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28632 to 23712. [2021-11-19 14:33:01,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23712 states, 15670 states have (on average 1.5899170389278876) internal successors, (24914), 17105 states have internal predecessors, (24914), 7289 states have call successors, (7289), 517 states have call predecessors, (7289), 752 states have return successors, (9484), 7373 states have call predecessors, (9484), 7284 states have call successors, (9484) [2021-11-19 14:33:01,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23712 states to 23712 states and 41687 transitions. [2021-11-19 14:33:01,983 INFO L78 Accepts]: Start accepts. Automaton has 23712 states and 41687 transitions. Word has length 113 [2021-11-19 14:33:01,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:33:01,984 INFO L470 AbstractCegarLoop]: Abstraction has 23712 states and 41687 transitions. [2021-11-19 14:33:01,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 8 states have call successors, (25), 6 states have call predecessors, (25), 5 states have return successors, (24), 8 states have call predecessors, (24), 7 states have call successors, (24) [2021-11-19 14:33:01,984 INFO L276 IsEmpty]: Start isEmpty. Operand 23712 states and 41687 transitions. [2021-11-19 14:33:01,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-19 14:33:01,990 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:33:01,991 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:33:02,011 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-19 14:33:02,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:33:02,207 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:33:02,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:33:02,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1630316254, now seen corresponding path program 1 times [2021-11-19 14:33:02,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:33:02,208 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [83305608] [2021-11-19 14:33:02,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:33:02,209 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:33:02,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:33:02,210 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:33:02,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-19 14:33:02,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:33:02,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 761 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 14:33:02,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:33:03,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:33:03,005 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:33:03,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:33:03,438 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:33:03,438 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [83305608] [2021-11-19 14:33:03,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [83305608] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:33:03,438 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:33:03,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2021-11-19 14:33:03,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158408298] [2021-11-19 14:33:03,438 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:33:03,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:33:03,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:33:03,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:33:03,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:33:03,440 INFO L87 Difference]: Start difference. First operand 23712 states and 41687 transitions. Second operand has 8 states, 8 states have (on average 19.0) internal successors, (152), 8 states have internal predecessors, (152), 8 states have call successors, (25), 6 states have call predecessors, (25), 5 states have return successors, (24), 8 states have call predecessors, (24), 7 states have call successors, (24) [2021-11-19 14:33:14,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:33:14,224 INFO L93 Difference]: Finished difference Result 104130 states and 189491 transitions. [2021-11-19 14:33:14,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 14:33:14,225 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.0) internal successors, (152), 8 states have internal predecessors, (152), 8 states have call successors, (25), 6 states have call predecessors, (25), 5 states have return successors, (24), 8 states have call predecessors, (24), 7 states have call successors, (24) Word has length 114 [2021-11-19 14:33:14,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:33:15,148 INFO L225 Difference]: With dead ends: 104130 [2021-11-19 14:33:15,148 INFO L226 Difference]: Without dead ends: 80472 [2021-11-19 14:33:15,289 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:33:15,290 INFO L933 BasicCegarLoop]: 1709 mSDtfsCounter, 3502 mSDsluCounter, 1299 mSDsCounter, 0 mSdLazyCounter, 2653 mSolverCounterSat, 1121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3598 SdHoareTripleChecker+Valid, 3008 SdHoareTripleChecker+Invalid, 3774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1121 IncrementalHoareTripleChecker+Valid, 2653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:33:15,290 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3598 Valid, 3008 Invalid, 3774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1121 Valid, 2653 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2021-11-19 14:33:15,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80472 states. [2021-11-19 14:33:22,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80472 to 67425. [2021-11-19 14:33:22,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67425 states, 42348 states have (on average 1.5725654104089921) internal successors, (66595), 46704 states have internal predecessors, (66595), 23350 states have call successors, (23350), 981 states have call predecessors, (23350), 1726 states have return successors, (32258), 23802 states have call predecessors, (32258), 23345 states have call successors, (32258) [2021-11-19 14:33:23,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67425 states to 67425 states and 122203 transitions. [2021-11-19 14:33:23,511 INFO L78 Accepts]: Start accepts. Automaton has 67425 states and 122203 transitions. Word has length 114 [2021-11-19 14:33:23,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:33:23,511 INFO L470 AbstractCegarLoop]: Abstraction has 67425 states and 122203 transitions. [2021-11-19 14:33:23,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.0) internal successors, (152), 8 states have internal predecessors, (152), 8 states have call successors, (25), 6 states have call predecessors, (25), 5 states have return successors, (24), 8 states have call predecessors, (24), 7 states have call successors, (24) [2021-11-19 14:33:23,512 INFO L276 IsEmpty]: Start isEmpty. Operand 67425 states and 122203 transitions. [2021-11-19 14:33:23,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-19 14:33:23,517 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:33:23,517 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:33:23,534 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-19 14:33:23,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:33:23,730 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:33:23,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:33:23,731 INFO L85 PathProgramCache]: Analyzing trace with hash -771596305, now seen corresponding path program 1 times [2021-11-19 14:33:23,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:33:23,731 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [752811062] [2021-11-19 14:33:23,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:33:23,732 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:33:23,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:33:23,733 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:33:23,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c5e8d-bd51-44c7-b0fe-54230a4c938a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-19 14:33:24,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:33:24,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 762 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 14:33:24,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:33:24,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:33:24,427 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:33:24,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:33:24,836 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:33:24,837 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [752811062] [2021-11-19 14:33:24,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [752811062] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:33:24,837 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:33:24,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2021-11-19 14:33:24,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634548847] [2021-11-19 14:33:24,837 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:33:24,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:33:24,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:33:24,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:33:24,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:33:24,839 INFO L87 Difference]: Start difference. First operand 67425 states and 122203 transitions. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 8 states have call successors, (25), 6 states have call predecessors, (25), 5 states have return successors, (24), 8 states have call predecessors, (24), 7 states have call successors, (24)