./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec2_product35.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1a6707-03d7-4a2c-b860-2d84b09b0e61/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1a6707-03d7-4a2c-b860-2d84b09b0e61/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1a6707-03d7-4a2c-b860-2d84b09b0e61/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1a6707-03d7-4a2c-b860-2d84b09b0e61/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec2_product35.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1a6707-03d7-4a2c-b860-2d84b09b0e61/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1a6707-03d7-4a2c-b860-2d84b09b0e61/bin/utaipan-9zjyvhn0QE --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 34d4dbed37590326da938d00ced1aba27649a4f6be46ad5130f0beeedcfaf5dd ............................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1a6707-03d7-4a2c-b860-2d84b09b0e61/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1a6707-03d7-4a2c-b860-2d84b09b0e61/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1a6707-03d7-4a2c-b860-2d84b09b0e61/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1a6707-03d7-4a2c-b860-2d84b09b0e61/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec2_product35.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1a6707-03d7-4a2c-b860-2d84b09b0e61/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1a6707-03d7-4a2c-b860-2d84b09b0e61/bin/utaipan-9zjyvhn0QE --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 34d4dbed37590326da938d00ced1aba27649a4f6be46ad5130f0beeedcfaf5dd .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 09:41:02,829 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 09:41:02,832 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 09:41:02,863 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 09:41:02,864 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 09:41:02,865 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 09:41:02,868 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 09:41:02,870 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 09:41:02,873 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 09:41:02,874 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 09:41:02,875 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 09:41:02,877 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 09:41:02,878 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 09:41:02,879 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 09:41:02,881 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 09:41:02,883 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 09:41:02,884 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 09:41:02,886 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 09:41:02,888 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 09:41:02,891 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 09:41:02,894 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 09:41:02,896 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 09:41:02,904 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 09:41:02,905 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 09:41:02,909 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 09:41:02,917 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 09:41:02,918 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 09:41:02,919 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 09:41:02,919 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 09:41:02,921 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 09:41:02,921 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 09:41:02,922 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 09:41:02,925 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 09:41:02,926 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 09:41:02,929 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 09:41:02,929 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 09:41:02,930 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 09:41:02,931 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 09:41:02,931 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 09:41:02,932 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 09:41:02,933 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 09:41:02,934 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1a6707-03d7-4a2c-b860-2d84b09b0e61/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-24 09:41:02,978 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 09:41:02,979 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 09:41:02,979 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 09:41:02,979 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 09:41:02,980 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 09:41:02,980 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 09:41:02,980 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 09:41:02,980 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 09:41:02,980 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 09:41:02,980 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 09:41:02,980 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 09:41:02,981 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 09:41:02,981 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 09:41:02,981 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 09:41:02,981 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 09:41:02,982 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 09:41:02,982 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 09:41:02,983 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 09:41:02,983 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 09:41:02,983 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 09:41:02,983 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 09:41:02,984 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 09:41:02,984 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 09:41:02,984 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 09:41:02,984 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 09:41:02,985 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 09:41:02,985 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 09:41:02,985 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 09:41:02,985 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 09:41:02,986 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 09:41:02,986 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 09:41:02,986 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 09:41:02,986 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 09:41:02,987 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 09:41:02,987 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 09:41:02,987 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 09:41:02,987 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 09:41:02,988 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 09:41:02,988 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 09:41:02,988 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_9b1a6707-03d7-4a2c-b860-2d84b09b0e61/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1a6707-03d7-4a2c-b860-2d84b09b0e61/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 34d4dbed37590326da938d00ced1aba27649a4f6be46ad5130f0beeedcfaf5dd [2021-10-24 09:41:03,235 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 09:41:03,270 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 09:41:03,272 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 09:41:03,272 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 09:41:03,273 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 09:41:03,273 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1a6707-03d7-4a2c-b860-2d84b09b0e61/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/product-lines/minepump_spec2_product35.cil.c [2021-10-24 09:41:03,356 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1a6707-03d7-4a2c-b860-2d84b09b0e61/bin/utaipan-9zjyvhn0QE/data/a17e41ff9/6a25489cf8414bd1b2e31bd696be68b8/FLAG73eae9021 [2021-10-24 09:41:03,825 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 09:41:03,826 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1a6707-03d7-4a2c-b860-2d84b09b0e61/sv-benchmarks/c/product-lines/minepump_spec2_product35.cil.c [2021-10-24 09:41:03,848 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1a6707-03d7-4a2c-b860-2d84b09b0e61/bin/utaipan-9zjyvhn0QE/data/a17e41ff9/6a25489cf8414bd1b2e31bd696be68b8/FLAG73eae9021 [2021-10-24 09:41:04,188 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1a6707-03d7-4a2c-b860-2d84b09b0e61/bin/utaipan-9zjyvhn0QE/data/a17e41ff9/6a25489cf8414bd1b2e31bd696be68b8 [2021-10-24 09:41:04,192 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 09:41:04,194 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 09:41:04,197 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 09:41:04,198 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 09:41:04,201 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 09:41:04,201 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:41:04" (1/1) ... [2021-10-24 09:41:04,203 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bf0f57d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:41:04, skipping insertion in model container [2021-10-24 09:41:04,203 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:41:04" (1/1) ... [2021-10-24 09:41:04,210 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 09:41:04,274 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 09:41:04,693 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1a6707-03d7-4a2c-b860-2d84b09b0e61/sv-benchmarks/c/product-lines/minepump_spec2_product35.cil.c[15769,15782] [2021-10-24 09:41:04,716 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 09:41:04,733 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) [2021-10-24 09:41:04,734 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@33fb679b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:41:04, skipping insertion in model container [2021-10-24 09:41:04,734 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 09:41:04,735 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-10-24 09:41:04,738 INFO L168 Benchmark]: Toolchain (without parser) took 541.86 ms. Allocated memory was 94.4 MB in the beginning and 132.1 MB in the end (delta: 37.7 MB). Free memory was 58.1 MB in the beginning and 104.7 MB in the end (delta: -46.7 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. [2021-10-24 09:41:04,739 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 94.4 MB. Free memory was 66.0 MB in the beginning and 66.0 MB in the end (delta: 27.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 09:41:04,741 INFO L168 Benchmark]: CACSL2BoogieTranslator took 537.39 ms. Allocated memory was 94.4 MB in the beginning and 132.1 MB in the end (delta: 37.7 MB). Free memory was 57.9 MB in the beginning and 104.7 MB in the end (delta: -46.8 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. [2021-10-24 09:41:04,744 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 94.4 MB. Free memory was 66.0 MB in the beginning and 66.0 MB in the end (delta: 27.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 537.39 ms. Allocated memory was 94.4 MB in the beginning and 132.1 MB in the end (delta: 37.7 MB). Free memory was 57.9 MB in the beginning and 104.7 MB in the end (delta: -46.8 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 78]: 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... ### Bit-precise run ### This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 09:41:06,967 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 09:41:06,971 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 09:41:07,025 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 09:41:07,026 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 09:41:07,030 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 09:41:07,032 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 09:41:07,037 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 09:41:07,040 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 09:41:07,049 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 09:41:07,050 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 09:41:07,052 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 09:41:07,052 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 09:41:07,053 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 09:41:07,055 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 09:41:07,056 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 09:41:07,057 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 09:41:07,059 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 09:41:07,070 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 09:41:07,076 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 09:41:07,078 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 09:41:07,086 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 09:41:07,087 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 09:41:07,088 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 09:41:07,092 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 09:41:07,098 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 09:41:07,098 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 09:41:07,099 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 09:41:07,100 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 09:41:07,101 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 09:41:07,101 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 09:41:07,103 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 09:41:07,104 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 09:41:07,105 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 09:41:07,106 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 09:41:07,106 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 09:41:07,107 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 09:41:07,108 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 09:41:07,108 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 09:41:07,109 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 09:41:07,110 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 09:41:07,115 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1a6707-03d7-4a2c-b860-2d84b09b0e61/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-24 09:41:07,162 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 09:41:07,162 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 09:41:07,163 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 09:41:07,164 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 09:41:07,164 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 09:41:07,164 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 09:41:07,164 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 09:41:07,165 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 09:41:07,165 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 09:41:07,166 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 09:41:07,167 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 09:41:07,168 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 09:41:07,168 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 09:41:07,168 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 09:41:07,168 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 09:41:07,168 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 09:41:07,169 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 09:41:07,169 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-24 09:41:07,169 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-24 09:41:07,169 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 09:41:07,169 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 09:41:07,170 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 09:41:07,170 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 09:41:07,170 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 09:41:07,170 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-24 09:41:07,171 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 09:41:07,171 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 09:41:07,171 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 09:41:07,171 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 09:41:07,172 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 09:41:07,172 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-24 09:41:07,172 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-24 09:41:07,172 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 09:41:07,172 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 09:41:07,173 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 09:41:07,173 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_9b1a6707-03d7-4a2c-b860-2d84b09b0e61/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1a6707-03d7-4a2c-b860-2d84b09b0e61/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 34d4dbed37590326da938d00ced1aba27649a4f6be46ad5130f0beeedcfaf5dd [2021-10-24 09:41:07,576 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 09:41:07,598 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 09:41:07,600 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 09:41:07,602 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 09:41:07,602 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 09:41:07,603 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1a6707-03d7-4a2c-b860-2d84b09b0e61/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/product-lines/minepump_spec2_product35.cil.c [2021-10-24 09:41:07,680 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1a6707-03d7-4a2c-b860-2d84b09b0e61/bin/utaipan-9zjyvhn0QE/data/1afc9778a/8c1d1d88398041609da2dba2a55485e1/FLAGb7b9b2d36 [2021-10-24 09:41:08,359 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 09:41:08,360 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1a6707-03d7-4a2c-b860-2d84b09b0e61/sv-benchmarks/c/product-lines/minepump_spec2_product35.cil.c [2021-10-24 09:41:08,377 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1a6707-03d7-4a2c-b860-2d84b09b0e61/bin/utaipan-9zjyvhn0QE/data/1afc9778a/8c1d1d88398041609da2dba2a55485e1/FLAGb7b9b2d36 [2021-10-24 09:41:08,601 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1a6707-03d7-4a2c-b860-2d84b09b0e61/bin/utaipan-9zjyvhn0QE/data/1afc9778a/8c1d1d88398041609da2dba2a55485e1 [2021-10-24 09:41:08,606 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 09:41:08,608 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 09:41:08,609 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 09:41:08,609 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 09:41:08,613 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 09:41:08,615 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:41:08" (1/1) ... [2021-10-24 09:41:08,616 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58426e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:41:08, skipping insertion in model container [2021-10-24 09:41:08,616 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:41:08" (1/1) ... [2021-10-24 09:41:08,624 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 09:41:08,690 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 09:41:08,975 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1a6707-03d7-4a2c-b860-2d84b09b0e61/sv-benchmarks/c/product-lines/minepump_spec2_product35.cil.c[15769,15782] [2021-10-24 09:41:08,994 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 09:41:09,015 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-24 09:41:09,023 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 09:41:09,087 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1a6707-03d7-4a2c-b860-2d84b09b0e61/sv-benchmarks/c/product-lines/minepump_spec2_product35.cil.c[15769,15782] [2021-10-24 09:41:09,097 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 09:41:09,102 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 09:41:09,166 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1a6707-03d7-4a2c-b860-2d84b09b0e61/sv-benchmarks/c/product-lines/minepump_spec2_product35.cil.c[15769,15782] [2021-10-24 09:41:09,188 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 09:41:09,211 INFO L208 MainTranslator]: Completed translation [2021-10-24 09:41:09,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:41:09 WrapperNode [2021-10-24 09:41:09,211 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 09:41:09,213 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 09:41:09,213 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 09:41:09,213 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 09:41:09,220 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:41:09" (1/1) ... [2021-10-24 09:41:09,251 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:41:09" (1/1) ... [2021-10-24 09:41:09,306 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 09:41:09,307 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 09:41:09,307 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 09:41:09,307 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 09:41:09,319 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:41:09" (1/1) ... [2021-10-24 09:41:09,319 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:41:09" (1/1) ... [2021-10-24 09:41:09,341 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:41:09" (1/1) ... [2021-10-24 09:41:09,341 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:41:09" (1/1) ... [2021-10-24 09:41:09,353 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:41:09" (1/1) ... [2021-10-24 09:41:09,359 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:41:09" (1/1) ... [2021-10-24 09:41:09,363 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:41:09" (1/1) ... [2021-10-24 09:41:09,368 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 09:41:09,369 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 09:41:09,369 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 09:41:09,369 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 09:41:09,370 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:41:09" (1/1) ... [2021-10-24 09:41:09,377 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 09:41:09,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1a6707-03d7-4a2c-b860-2d84b09b0e61/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 09:41:09,418 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1a6707-03d7-4a2c-b860-2d84b09b0e61/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 09:41:09,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1a6707-03d7-4a2c-b860-2d84b09b0e61/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 09:41:09,457 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 09:41:09,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-24 09:41:09,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 09:41:09,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 09:41:11,636 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 09:41:11,637 INFO L299 CfgBuilder]: Removed 102 assume(true) statements. [2021-10-24 09:41:11,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:41:11 BoogieIcfgContainer [2021-10-24 09:41:11,639 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 09:41:11,641 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 09:41:11,641 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 09:41:11,644 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 09:41:11,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:41:08" (1/3) ... [2021-10-24 09:41:11,645 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47c0fea8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:41:11, skipping insertion in model container [2021-10-24 09:41:11,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:41:09" (2/3) ... [2021-10-24 09:41:11,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47c0fea8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:41:11, skipping insertion in model container [2021-10-24 09:41:11,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:41:11" (3/3) ... [2021-10-24 09:41:11,647 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product35.cil.c [2021-10-24 09:41:11,653 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 09:41:11,653 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-24 09:41:11,701 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 09:41:11,708 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 [2021-10-24 09:41:11,708 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-24 09:41:11,724 INFO L276 IsEmpty]: Start isEmpty. Operand has 84 states, 80 states have (on average 1.5875) internal successors, (127), 83 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:41:11,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-24 09:41:11,730 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:41:11,731 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:41:11,731 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:41:11,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:41:11,737 INFO L82 PathProgramCache]: Analyzing trace with hash -1673386384, now seen corresponding path program 1 times [2021-10-24 09:41:11,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:41:11,757 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [450955144] [2021-10-24 09:41:11,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:41:11,759 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:41:11,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1a6707-03d7-4a2c-b860-2d84b09b0e61/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:41:11,779 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1a6707-03d7-4a2c-b860-2d84b09b0e61/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:41:11,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1a6707-03d7-4a2c-b860-2d84b09b0e61/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-24 09:41:12,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:41:12,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-24 09:41:12,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:41:12,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:41:12,154 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:41:12,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:41:12,235 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:41:12,236 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [450955144] [2021-10-24 09:41:12,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [450955144] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:41:12,236 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:41:12,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-24 09:41:12,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027744650] [2021-10-24 09:41:12,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-24 09:41:12,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:41:12,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-24 09:41:12,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-24 09:41:12,259 INFO L87 Difference]: Start difference. First operand has 84 states, 80 states have (on average 1.5875) internal successors, (127), 83 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:41:12,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:41:12,293 INFO L93 Difference]: Finished difference Result 161 states and 246 transitions. [2021-10-24 09:41:12,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-24 09:41:12,295 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-24 09:41:12,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:41:12,314 INFO L225 Difference]: With dead ends: 161 [2021-10-24 09:41:12,314 INFO L226 Difference]: Without dead ends: 80 [2021-10-24 09:41:12,316 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-24 09:41:12,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-10-24 09:41:12,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2021-10-24 09:41:12,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 77 states have (on average 1.4935064935064934) internal successors, (115), 79 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:41:12,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 115 transitions. [2021-10-24 09:41:12,354 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 115 transitions. Word has length 18 [2021-10-24 09:41:12,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:41:12,354 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 115 transitions. [2021-10-24 09:41:12,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:41:12,355 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 115 transitions. [2021-10-24 09:41:12,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-24 09:41:12,356 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:41:12,356 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:41:12,369 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1a6707-03d7-4a2c-b860-2d84b09b0e61/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-24 09:41:12,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1a6707-03d7-4a2c-b860-2d84b09b0e61/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:41:12,565 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:41:12,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:41:12,566 INFO L82 PathProgramCache]: Analyzing trace with hash 572864739, now seen corresponding path program 1 times [2021-10-24 09:41:12,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:41:12,567 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [151363650] [2021-10-24 09:41:12,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:41:12,568 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:41:12,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1a6707-03d7-4a2c-b860-2d84b09b0e61/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:41:12,569 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1a6707-03d7-4a2c-b860-2d84b09b0e61/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:41:12,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1a6707-03d7-4a2c-b860-2d84b09b0e61/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-24 09:41:12,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:41:12,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-24 09:41:12,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:41:12,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:41:12,822 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:41:12,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:41:12,878 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:41:12,878 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [151363650] [2021-10-24 09:41:12,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [151363650] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:41:12,879 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:41:12,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-24 09:41:12,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045209015] [2021-10-24 09:41:12,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 09:41:12,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:41:12,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 09:41:12,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 09:41:12,883 INFO L87 Difference]: Start difference. First operand 80 states and 115 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:41:12,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:41:12,897 INFO L93 Difference]: Finished difference Result 80 states and 115 transitions. [2021-10-24 09:41:12,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 09:41:12,898 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-24 09:41:12,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:41:12,899 INFO L225 Difference]: With dead ends: 80 [2021-10-24 09:41:12,899 INFO L226 Difference]: Without dead ends: 38 [2021-10-24 09:41:12,900 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 09:41:12,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-10-24 09:41:12,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2021-10-24 09:41:12,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.4594594594594594) internal successors, (54), 37 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:41:12,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 54 transitions. [2021-10-24 09:41:12,906 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 54 transitions. Word has length 19 [2021-10-24 09:41:12,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:41:12,907 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 54 transitions. [2021-10-24 09:41:12,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:41:12,907 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 54 transitions. [2021-10-24 09:41:12,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-24 09:41:12,908 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:41:12,909 INFO L512 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] [2021-10-24 09:41:12,932 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1a6707-03d7-4a2c-b860-2d84b09b0e61/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-24 09:41:13,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1a6707-03d7-4a2c-b860-2d84b09b0e61/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:41:13,134 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:41:13,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:41:13,134 INFO L82 PathProgramCache]: Analyzing trace with hash -2071848385, now seen corresponding path program 1 times [2021-10-24 09:41:13,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:41:13,135 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [651303100] [2021-10-24 09:41:13,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:41:13,136 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:41:13,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1a6707-03d7-4a2c-b860-2d84b09b0e61/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:41:13,137 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1a6707-03d7-4a2c-b860-2d84b09b0e61/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:41:13,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1a6707-03d7-4a2c-b860-2d84b09b0e61/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-24 09:41:13,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:41:13,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-24 09:41:13,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:41:13,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:41:13,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:41:13,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:41:13,576 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:41:13,576 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [651303100] [2021-10-24 09:41:13,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [651303100] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:41:13,577 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:41:13,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-24 09:41:13,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074733326] [2021-10-24 09:41:13,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 09:41:13,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:41:13,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 09:41:13,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 09:41:13,579 INFO L87 Difference]: Start difference. First operand 38 states and 54 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:41:13,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:41:13,603 INFO L93 Difference]: Finished difference Result 124 states and 184 transitions. [2021-10-24 09:41:13,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 09:41:13,604 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-24 09:41:13,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:41:13,606 INFO L225 Difference]: With dead ends: 124 [2021-10-24 09:41:13,606 INFO L226 Difference]: Without dead ends: 93 [2021-10-24 09:41:13,606 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 09:41:13,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-10-24 09:41:13,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 58. [2021-10-24 09:41:13,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.4912280701754386) internal successors, (85), 57 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:41:13,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 85 transitions. [2021-10-24 09:41:13,619 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 85 transitions. Word has length 24 [2021-10-24 09:41:13,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:41:13,619 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 85 transitions. [2021-10-24 09:41:13,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:41:13,620 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 85 transitions. [2021-10-24 09:41:13,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-24 09:41:13,621 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:41:13,621 INFO L512 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] [2021-10-24 09:41:13,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1a6707-03d7-4a2c-b860-2d84b09b0e61/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-24 09:41:13,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1a6707-03d7-4a2c-b860-2d84b09b0e61/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:41:13,834 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:41:13,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:41:13,835 INFO L82 PathProgramCache]: Analyzing trace with hash 343514617, now seen corresponding path program 1 times [2021-10-24 09:41:13,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:41:13,836 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2104690430] [2021-10-24 09:41:13,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:41:13,836 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:41:13,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1a6707-03d7-4a2c-b860-2d84b09b0e61/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:41:13,837 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1a6707-03d7-4a2c-b860-2d84b09b0e61/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:41:13,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1a6707-03d7-4a2c-b860-2d84b09b0e61/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-24 09:41:14,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:41:14,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-24 09:41:14,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:41:14,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:41:14,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:41:14,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:41:14,169 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:41:14,170 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2104690430] [2021-10-24 09:41:14,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2104690430] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:41:14,170 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:41:14,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-24 09:41:14,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066915844] [2021-10-24 09:41:14,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 09:41:14,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:41:14,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 09:41:14,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 09:41:14,172 INFO L87 Difference]: Start difference. First operand 58 states and 85 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:41:14,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:41:14,231 INFO L93 Difference]: Finished difference Result 131 states and 195 transitions. [2021-10-24 09:41:14,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 09:41:14,231 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-24 09:41:14,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:41:14,232 INFO L225 Difference]: With dead ends: 131 [2021-10-24 09:41:14,232 INFO L226 Difference]: Without dead ends: 80 [2021-10-24 09:41:14,233 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 09:41:14,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-10-24 09:41:14,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 78. [2021-10-24 09:41:14,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.4545454545454546) internal successors, (112), 77 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:41:14,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 112 transitions. [2021-10-24 09:41:14,245 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 112 transitions. Word has length 25 [2021-10-24 09:41:14,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:41:14,246 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 112 transitions. [2021-10-24 09:41:14,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:41:14,246 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 112 transitions. [2021-10-24 09:41:14,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-24 09:41:14,247 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:41:14,247 INFO L512 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] [2021-10-24 09:41:14,263 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1a6707-03d7-4a2c-b860-2d84b09b0e61/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-24 09:41:14,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1a6707-03d7-4a2c-b860-2d84b09b0e61/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:41:14,463 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:41:14,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:41:14,464 INFO L82 PathProgramCache]: Analyzing trace with hash -1750340408, now seen corresponding path program 1 times [2021-10-24 09:41:14,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:41:14,464 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [523498425] [2021-10-24 09:41:14,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:41:14,465 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:41:14,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1a6707-03d7-4a2c-b860-2d84b09b0e61/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:41:14,465 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1a6707-03d7-4a2c-b860-2d84b09b0e61/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:41:14,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1a6707-03d7-4a2c-b860-2d84b09b0e61/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-24 09:41:14,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:41:14,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-24 09:41:14,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:41:14,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:41:14,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:41:14,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:41:14,900 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:41:14,901 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [523498425] [2021-10-24 09:41:14,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [523498425] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:41:14,901 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:41:14,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-24 09:41:14,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973196311] [2021-10-24 09:41:14,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-24 09:41:14,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:41:14,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-24 09:41:14,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-24 09:41:14,903 INFO L87 Difference]: Start difference. First operand 78 states and 112 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:41:15,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:41:15,009 INFO L93 Difference]: Finished difference Result 361 states and 530 transitions. [2021-10-24 09:41:15,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-24 09:41:15,009 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-10-24 09:41:15,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:41:15,012 INFO L225 Difference]: With dead ends: 361 [2021-10-24 09:41:15,012 INFO L226 Difference]: Without dead ends: 290 [2021-10-24 09:41:15,014 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 46.1ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-24 09:41:15,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2021-10-24 09:41:15,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 138. [2021-10-24 09:41:15,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 137 states have (on average 1.4233576642335766) internal successors, (195), 137 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:41:15,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 195 transitions. [2021-10-24 09:41:15,038 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 195 transitions. Word has length 27 [2021-10-24 09:41:15,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:41:15,038 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 195 transitions. [2021-10-24 09:41:15,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:41:15,039 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 195 transitions. [2021-10-24 09:41:15,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-24 09:41:15,040 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:41:15,040 INFO L512 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] [2021-10-24 09:41:15,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1a6707-03d7-4a2c-b860-2d84b09b0e61/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-24 09:41:15,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1a6707-03d7-4a2c-b860-2d84b09b0e61/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:41:15,249 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:41:15,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:41:15,249 INFO L82 PathProgramCache]: Analyzing trace with hash 1110481728, now seen corresponding path program 1 times [2021-10-24 09:41:15,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:41:15,250 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [888651138] [2021-10-24 09:41:15,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:41:15,251 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:41:15,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1a6707-03d7-4a2c-b860-2d84b09b0e61/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:41:15,252 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1a6707-03d7-4a2c-b860-2d84b09b0e61/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:41:15,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1a6707-03d7-4a2c-b860-2d84b09b0e61/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-24 09:41:15,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:41:15,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-24 09:41:15,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:41:15,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:41:15,573 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:41:15,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:41:15,666 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:41:15,666 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [888651138] [2021-10-24 09:41:15,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [888651138] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:41:15,667 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:41:15,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-24 09:41:15,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653344767] [2021-10-24 09:41:15,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-24 09:41:15,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:41:15,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-24 09:41:15,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-24 09:41:15,670 INFO L87 Difference]: Start difference. First operand 138 states and 195 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:41:15,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:41:15,857 INFO L93 Difference]: Finished difference Result 499 states and 711 transitions. [2021-10-24 09:41:15,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-24 09:41:15,858 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-10-24 09:41:15,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:41:15,861 INFO L225 Difference]: With dead ends: 499 [2021-10-24 09:41:15,861 INFO L226 Difference]: Without dead ends: 368 [2021-10-24 09:41:15,862 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 57.1ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-24 09:41:15,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2021-10-24 09:41:15,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 136. [2021-10-24 09:41:15,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 135 states have (on average 1.4) internal successors, (189), 135 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:41:15,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 189 transitions. [2021-10-24 09:41:15,889 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 189 transitions. Word has length 28 [2021-10-24 09:41:15,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:41:15,889 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 189 transitions. [2021-10-24 09:41:15,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:41:15,889 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 189 transitions. [2021-10-24 09:41:15,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-24 09:41:15,891 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:41:15,891 INFO L512 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] [2021-10-24 09:41:15,907 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1a6707-03d7-4a2c-b860-2d84b09b0e61/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-24 09:41:16,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1a6707-03d7-4a2c-b860-2d84b09b0e61/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:41:16,104 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:41:16,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:41:16,105 INFO L82 PathProgramCache]: Analyzing trace with hash -2071146496, now seen corresponding path program 1 times [2021-10-24 09:41:16,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:41:16,106 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2058165122] [2021-10-24 09:41:16,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:41:16,106 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:41:16,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1a6707-03d7-4a2c-b860-2d84b09b0e61/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:41:16,107 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1a6707-03d7-4a2c-b860-2d84b09b0e61/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:41:16,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1a6707-03d7-4a2c-b860-2d84b09b0e61/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-24 09:41:16,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:41:16,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-24 09:41:16,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:41:16,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:41:16,453 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:41:16,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:41:16,520 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:41:16,520 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2058165122] [2021-10-24 09:41:16,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2058165122] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:41:16,521 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:41:16,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-24 09:41:16,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698691029] [2021-10-24 09:41:16,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-24 09:41:16,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:41:16,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-24 09:41:16,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-24 09:41:16,523 INFO L87 Difference]: Start difference. First operand 136 states and 189 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:41:16,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:41:16,612 INFO L93 Difference]: Finished difference Result 401 states and 556 transitions. [2021-10-24 09:41:16,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-24 09:41:16,613 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-10-24 09:41:16,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:41:16,617 INFO L225 Difference]: With dead ends: 401 [2021-10-24 09:41:16,618 INFO L226 Difference]: Without dead ends: 272 [2021-10-24 09:41:16,620 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.9ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-24 09:41:16,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-10-24 09:41:16,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 142. [2021-10-24 09:41:16,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 141 states have (on average 1.3829787234042554) internal successors, (195), 141 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:41:16,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 195 transitions. [2021-10-24 09:41:16,659 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 195 transitions. Word has length 32 [2021-10-24 09:41:16,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:41:16,660 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 195 transitions. [2021-10-24 09:41:16,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:41:16,660 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 195 transitions. [2021-10-24 09:41:16,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-24 09:41:16,662 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:41:16,662 INFO L512 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] [2021-10-24 09:41:16,680 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1a6707-03d7-4a2c-b860-2d84b09b0e61/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-24 09:41:16,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1a6707-03d7-4a2c-b860-2d84b09b0e61/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:41:16,878 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:41:16,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:41:16,878 INFO L82 PathProgramCache]: Analyzing trace with hash -1370081918, now seen corresponding path program 1 times [2021-10-24 09:41:16,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:41:16,879 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1766647216] [2021-10-24 09:41:16,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:41:16,879 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:41:16,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1a6707-03d7-4a2c-b860-2d84b09b0e61/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:41:16,880 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1a6707-03d7-4a2c-b860-2d84b09b0e61/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:41:16,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1a6707-03d7-4a2c-b860-2d84b09b0e61/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-24 09:41:17,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:41:17,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-24 09:41:17,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:41:17,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:41:17,233 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:41:17,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:41:17,322 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:41:17,322 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1766647216] [2021-10-24 09:41:17,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1766647216] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:41:17,322 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:41:17,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-24 09:41:17,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740649977] [2021-10-24 09:41:17,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-24 09:41:17,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:41:17,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-24 09:41:17,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-24 09:41:17,324 INFO L87 Difference]: Start difference. First operand 142 states and 195 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:41:17,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:41:17,393 INFO L93 Difference]: Finished difference Result 435 states and 595 transitions. [2021-10-24 09:41:17,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-24 09:41:17,394 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-10-24 09:41:17,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:41:17,396 INFO L225 Difference]: With dead ends: 435 [2021-10-24 09:41:17,396 INFO L226 Difference]: Without dead ends: 300 [2021-10-24 09:41:17,397 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 23.1ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-24 09:41:17,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2021-10-24 09:41:17,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 146. [2021-10-24 09:41:17,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 145 states have (on average 1.3724137931034484) internal successors, (199), 145 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:41:17,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 199 transitions. [2021-10-24 09:41:17,421 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 199 transitions. Word has length 32 [2021-10-24 09:41:17,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:41:17,421 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 199 transitions. [2021-10-24 09:41:17,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:41:17,422 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 199 transitions. [2021-10-24 09:41:17,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-24 09:41:17,424 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:41:17,424 INFO L512 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] [2021-10-24 09:41:17,437 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1a6707-03d7-4a2c-b860-2d84b09b0e61/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-24 09:41:17,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1a6707-03d7-4a2c-b860-2d84b09b0e61/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:41:17,637 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:41:17,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:41:17,637 INFO L82 PathProgramCache]: Analyzing trace with hash -1956887932, now seen corresponding path program 1 times [2021-10-24 09:41:17,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:41:17,638 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [51813928] [2021-10-24 09:41:17,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:41:17,638 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:41:17,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1a6707-03d7-4a2c-b860-2d84b09b0e61/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:41:17,639 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1a6707-03d7-4a2c-b860-2d84b09b0e61/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:41:17,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1a6707-03d7-4a2c-b860-2d84b09b0e61/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-24 09:41:17,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:41:17,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-24 09:41:17,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:41:18,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:41:18,026 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:41:18,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:41:18,134 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:41:18,134 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [51813928] [2021-10-24 09:41:18,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [51813928] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:41:18,134 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:41:18,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-24 09:41:18,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656029374] [2021-10-24 09:41:18,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 09:41:18,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:41:18,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 09:41:18,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 09:41:18,136 INFO L87 Difference]: Start difference. First operand 146 states and 199 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:41:18,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:41:18,222 INFO L93 Difference]: Finished difference Result 496 states and 679 transitions. [2021-10-24 09:41:18,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 09:41:18,223 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-10-24 09:41:18,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:41:18,225 INFO L225 Difference]: With dead ends: 496 [2021-10-24 09:41:18,226 INFO L226 Difference]: Without dead ends: 357 [2021-10-24 09:41:18,226 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 09:41:18,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2021-10-24 09:41:18,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 269. [2021-10-24 09:41:18,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 268 states have (on average 1.3582089552238805) internal successors, (364), 268 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:41:18,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 364 transitions. [2021-10-24 09:41:18,268 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 364 transitions. Word has length 32 [2021-10-24 09:41:18,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:41:18,268 INFO L470 AbstractCegarLoop]: Abstraction has 269 states and 364 transitions. [2021-10-24 09:41:18,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:41:18,269 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 364 transitions. [2021-10-24 09:41:18,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-24 09:41:18,273 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:41:18,273 INFO L512 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] [2021-10-24 09:41:18,286 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1a6707-03d7-4a2c-b860-2d84b09b0e61/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-24 09:41:18,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1a6707-03d7-4a2c-b860-2d84b09b0e61/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:41:18,485 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:41:18,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:41:18,486 INFO L82 PathProgramCache]: Analyzing trace with hash 875175876, now seen corresponding path program 1 times [2021-10-24 09:41:18,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:41:18,486 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1118334322] [2021-10-24 09:41:18,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:41:18,487 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:41:18,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1a6707-03d7-4a2c-b860-2d84b09b0e61/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:41:18,488 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1a6707-03d7-4a2c-b860-2d84b09b0e61/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:41:18,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1a6707-03d7-4a2c-b860-2d84b09b0e61/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-24 09:41:18,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:41:18,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-24 09:41:18,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:41:18,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:41:18,903 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:41:19,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:41:19,015 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:41:19,015 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1118334322] [2021-10-24 09:41:19,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1118334322] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:41:19,015 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:41:19,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-24 09:41:19,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346297694] [2021-10-24 09:41:19,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 09:41:19,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:41:19,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 09:41:19,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 09:41:19,017 INFO L87 Difference]: Start difference. First operand 269 states and 364 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:41:19,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:41:19,108 INFO L93 Difference]: Finished difference Result 419 states and 564 transitions. [2021-10-24 09:41:19,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 09:41:19,108 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-10-24 09:41:19,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:41:19,113 INFO L225 Difference]: With dead ends: 419 [2021-10-24 09:41:19,113 INFO L226 Difference]: Without dead ends: 417 [2021-10-24 09:41:19,114 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 09:41:19,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2021-10-24 09:41:19,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 323. [2021-10-24 09:41:19,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 322 states have (on average 1.3788819875776397) internal successors, (444), 322 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:41:19,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 444 transitions. [2021-10-24 09:41:19,167 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 444 transitions. Word has length 33 [2021-10-24 09:41:19,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:41:19,168 INFO L470 AbstractCegarLoop]: Abstraction has 323 states and 444 transitions. [2021-10-24 09:41:19,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:41:19,168 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 444 transitions. [2021-10-24 09:41:19,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-10-24 09:41:19,170 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:41:19,171 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:41:19,188 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1a6707-03d7-4a2c-b860-2d84b09b0e61/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-24 09:41:19,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1a6707-03d7-4a2c-b860-2d84b09b0e61/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:41:19,385 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:41:19,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:41:19,385 INFO L82 PathProgramCache]: Analyzing trace with hash 1646221848, now seen corresponding path program 1 times [2021-10-24 09:41:19,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:41:19,386 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1460303595] [2021-10-24 09:41:19,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:41:19,386 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:41:19,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1a6707-03d7-4a2c-b860-2d84b09b0e61/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:41:19,387 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1a6707-03d7-4a2c-b860-2d84b09b0e61/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:41:19,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1a6707-03d7-4a2c-b860-2d84b09b0e61/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-24 09:41:20,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 09:41:20,639 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-24 09:41:21,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 09:41:21,699 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-24 09:41:21,699 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-24 09:41:21,700 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 09:41:21,702 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 09:41:21,702 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 09:41:21,725 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1a6707-03d7-4a2c-b860-2d84b09b0e61/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-24 09:41:21,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1a6707-03d7-4a2c-b860-2d84b09b0e61/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:41:21,927 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 09:41:22,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:41:22 BoogieIcfgContainer [2021-10-24 09:41:22,058 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 09:41:22,059 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 09:41:22,059 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 09:41:22,059 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 09:41:22,060 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:41:11" (3/4) ... [2021-10-24 09:41:22,061 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-24 09:41:22,213 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1a6707-03d7-4a2c-b860-2d84b09b0e61/bin/utaipan-9zjyvhn0QE/witness.graphml [2021-10-24 09:41:22,214 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 09:41:22,215 INFO L168 Benchmark]: Toolchain (without parser) took 13606.57 ms. Allocated memory was 65.0 MB in the beginning and 117.4 MB in the end (delta: 52.4 MB). Free memory was 46.3 MB in the beginning and 49.3 MB in the end (delta: -3.0 MB). Peak memory consumption was 48.7 MB. Max. memory is 16.1 GB. [2021-10-24 09:41:22,215 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 65.0 MB. Free memory is still 45.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 09:41:22,216 INFO L168 Benchmark]: CACSL2BoogieTranslator took 603.32 ms. Allocated memory is still 65.0 MB. Free memory was 46.1 MB in the beginning and 34.3 MB in the end (delta: 11.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-24 09:41:22,216 INFO L168 Benchmark]: Boogie Procedure Inliner took 93.72 ms. Allocated memory is still 65.0 MB. Free memory was 34.3 MB in the beginning and 31.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 09:41:22,217 INFO L168 Benchmark]: Boogie Preprocessor took 60.95 ms. Allocated memory is still 65.0 MB. Free memory was 31.2 MB in the beginning and 29.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 09:41:22,221 INFO L168 Benchmark]: RCFGBuilder took 2270.48 ms. Allocated memory was 65.0 MB in the beginning and 96.5 MB in the end (delta: 31.5 MB). Free memory was 28.9 MB in the beginning and 63.9 MB in the end (delta: -35.1 MB). Peak memory consumption was 20.0 MB. Max. memory is 16.1 GB. [2021-10-24 09:41:22,222 INFO L168 Benchmark]: TraceAbstraction took 10417.53 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 63.3 MB in the beginning and 70.2 MB in the end (delta: -6.9 MB). Peak memory consumption was 57.6 MB. Max. memory is 16.1 GB. [2021-10-24 09:41:22,222 INFO L168 Benchmark]: Witness Printer took 154.87 ms. Allocated memory is still 117.4 MB. Free memory was 70.2 MB in the beginning and 49.3 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2021-10-24 09:41:22,224 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 65.0 MB. Free memory is still 45.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 603.32 ms. Allocated memory is still 65.0 MB. Free memory was 46.1 MB in the beginning and 34.3 MB in the end (delta: 11.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 93.72 ms. Allocated memory is still 65.0 MB. Free memory was 34.3 MB in the beginning and 31.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 60.95 ms. Allocated memory is still 65.0 MB. Free memory was 31.2 MB in the beginning and 29.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2270.48 ms. Allocated memory was 65.0 MB in the beginning and 96.5 MB in the end (delta: 31.5 MB). Free memory was 28.9 MB in the beginning and 63.9 MB in the end (delta: -35.1 MB). Peak memory consumption was 20.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 10417.53 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 63.3 MB in the beginning and 70.2 MB in the end (delta: -6.9 MB). Peak memory consumption was 57.6 MB. Max. memory is 16.1 GB. * Witness Printer took 154.87 ms. Allocated memory is still 117.4 MB. Free memory was 70.2 MB in the beginning and 49.3 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 746]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L219] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L426] int pumpRunning = 0; [L427] int systemActive = 1; [L665] int methAndRunningLastTime ; [L751] int cleanupTimeShifts = 4; [L849] int waterLevel = 1; [L850] int methaneLevelCritical = 0; VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L825] int retValue_acc ; [L826] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L733] int retValue_acc ; [L736] retValue_acc = 1 [L737] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L832] tmp = valid_product() [L834] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L670] methAndRunningLastTime = 0 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L598] int splverifierCounter ; [L599] int tmp ; [L600] int tmp___0 ; [L601] int tmp___1 ; [L602] int tmp___2 ; [L605] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L607] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L609] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L615] tmp = __VERIFIER_nondet_int() [L617] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L867] COND TRUE waterLevel < 2 [L868] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L625] tmp___0 = __VERIFIER_nondet_int() [L627] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L879] COND FALSE !(\read(methaneLevelCritical)) [L882] methaneLevelCritical = 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L635] tmp___2 = __VERIFIER_nondet_int() [L637] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L434] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L441] COND TRUE \read(systemActive) [L463] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L466] COND TRUE ! pumpRunning [L560] int retValue_acc ; [L561] int tmp ; [L562] int tmp___0 ; [L929] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L932] COND FALSE !(waterLevel < 2) [L936] retValue_acc = 0 [L937] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L566] tmp = isHighWaterSensorDry() [L568] COND FALSE !(\read(tmp)) [L571] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L573] retValue_acc = tmp___0 [L574] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L468] tmp = isHighWaterLevel() [L470] COND TRUE \read(tmp) [L491] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L675] int tmp ; [L676] int tmp___0 ; [L888] int retValue_acc ; [L891] retValue_acc = methaneLevelCritical [L892] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L680] tmp = isMethaneLevelCritical() [L682] COND TRUE \read(tmp) [L515] int retValue_acc ; [L518] retValue_acc = pumpRunning [L519] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L684] tmp___0 = isPumpRunning() [L686] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L687] COND FALSE !(\read(methAndRunningLastTime)) [L692] methAndRunningLastTime = 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L607] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L609] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L615] tmp = __VERIFIER_nondet_int() [L617] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L625] tmp___0 = __VERIFIER_nondet_int() [L627] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L635] tmp___2 = __VERIFIER_nondet_int() [L637] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L434] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L855] COND TRUE waterLevel > 0 [L856] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L441] COND TRUE \read(systemActive) [L463] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L466] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L675] int tmp ; [L676] int tmp___0 ; [L888] int retValue_acc ; [L891] retValue_acc = methaneLevelCritical [L892] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L680] tmp = isMethaneLevelCritical() [L682] COND TRUE \read(tmp) [L515] int retValue_acc ; [L518] retValue_acc = pumpRunning [L519] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L684] tmp___0 = isPumpRunning() [L686] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L687] COND TRUE \read(methAndRunningLastTime) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L746] reach_error() VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] - UnprovableResult [Line: 746]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 746]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 84 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 10225.5ms, OverallIterations: 11, TraceHistogramMax: 2, EmptinessCheckTime: 27.9ms, AutomataDifference: 846.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 11.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 719 SDtfs, 869 SDslu, 1287 SDs, 0 SdLazy, 132 SolverSat, 30 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 231.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 536 GetRequests, 504 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 187.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=323occurred in iteration=10, InterpolantAutomatonStates: 47, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 261.9ms AutomataMinimizationTime, 10 MinimizatonAttempts, 887 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 231.6ms SsaConstructionTime, 2183.9ms SatisfiabilityAnalysisTime, 2010.9ms InterpolantComputationTime, 321 NumberOfCodeBlocks, 321 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 520 ConstructedInterpolants, 0 QuantifiedInterpolants, 938 SizeOfPredicates, 13 NumberOfNonLiveVariables, 2048 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 20 InterpolantComputations, 20 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-24 09:41:22,283 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1a6707-03d7-4a2c-b860-2d84b09b0e61/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...