./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec2_product41.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_d343eaad-db1c-4b20-b354-9f45bdba51b4/bin/utaipan-tZwUujhuQw/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d343eaad-db1c-4b20-b354-9f45bdba51b4/bin/utaipan-tZwUujhuQw/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d343eaad-db1c-4b20-b354-9f45bdba51b4/bin/utaipan-tZwUujhuQw/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d343eaad-db1c-4b20-b354-9f45bdba51b4/bin/utaipan-tZwUujhuQw/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec2_product41.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d343eaad-db1c-4b20-b354-9f45bdba51b4/bin/utaipan-tZwUujhuQw/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d343eaad-db1c-4b20-b354-9f45bdba51b4/bin/utaipan-tZwUujhuQw --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 2e4978c2419e4c1644022dd229f44f68c9d14c10177af084ee11ac932b0c1016 ............................................................................................................................................ 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_d343eaad-db1c-4b20-b354-9f45bdba51b4/bin/utaipan-tZwUujhuQw/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d343eaad-db1c-4b20-b354-9f45bdba51b4/bin/utaipan-tZwUujhuQw/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d343eaad-db1c-4b20-b354-9f45bdba51b4/bin/utaipan-tZwUujhuQw/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d343eaad-db1c-4b20-b354-9f45bdba51b4/bin/utaipan-tZwUujhuQw/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec2_product41.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d343eaad-db1c-4b20-b354-9f45bdba51b4/bin/utaipan-tZwUujhuQw/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d343eaad-db1c-4b20-b354-9f45bdba51b4/bin/utaipan-tZwUujhuQw --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 2e4978c2419e4c1644022dd229f44f68c9d14c10177af084ee11ac932b0c1016 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 [2021-10-20 05:12:09,875 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-20 05:12:09,878 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-20 05:12:09,932 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-20 05:12:09,933 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-20 05:12:09,937 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-20 05:12:09,939 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-20 05:12:09,942 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-20 05:12:09,945 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-20 05:12:09,950 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-20 05:12:09,952 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-20 05:12:09,953 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-20 05:12:09,954 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-20 05:12:09,957 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-20 05:12:09,959 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-20 05:12:09,963 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-20 05:12:09,965 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-20 05:12:09,966 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-20 05:12:09,968 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-20 05:12:09,976 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-20 05:12:09,978 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-20 05:12:09,979 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-20 05:12:09,982 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-20 05:12:09,983 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-20 05:12:09,992 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-20 05:12:09,993 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-20 05:12:09,993 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-20 05:12:09,995 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-20 05:12:09,996 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-20 05:12:09,998 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-20 05:12:09,998 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-20 05:12:09,999 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-20 05:12:10,001 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-20 05:12:10,003 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-20 05:12:10,004 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-20 05:12:10,005 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-20 05:12:10,005 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-20 05:12:10,006 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-20 05:12:10,006 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-20 05:12:10,007 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-20 05:12:10,008 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-20 05:12:10,009 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d343eaad-db1c-4b20-b354-9f45bdba51b4/bin/utaipan-tZwUujhuQw/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-20 05:12:10,054 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-20 05:12:10,055 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-20 05:12:10,056 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-20 05:12:10,056 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-20 05:12:10,057 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-20 05:12:10,057 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-20 05:12:10,057 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-20 05:12:10,057 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-20 05:12:10,058 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-20 05:12:10,058 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-20 05:12:10,059 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-20 05:12:10,059 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-20 05:12:10,060 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-20 05:12:10,060 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-20 05:12:10,060 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-20 05:12:10,061 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-20 05:12:10,061 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-20 05:12:10,061 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-20 05:12:10,062 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-20 05:12:10,062 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-20 05:12:10,062 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-20 05:12:10,062 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-20 05:12:10,062 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-20 05:12:10,063 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-20 05:12:10,063 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-20 05:12:10,063 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-20 05:12:10,063 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-20 05:12:10,064 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-20 05:12:10,064 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-20 05:12:10,065 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-20 05:12:10,066 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 05:12:10,066 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-20 05:12:10,066 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-20 05:12:10,067 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-20 05:12:10,067 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-20 05:12:10,067 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-20 05:12:10,067 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-20 05:12:10,068 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-20 05:12:10,068 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-20 05:12:10,068 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_d343eaad-db1c-4b20-b354-9f45bdba51b4/bin/utaipan-tZwUujhuQw/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d343eaad-db1c-4b20-b354-9f45bdba51b4/bin/utaipan-tZwUujhuQw Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2e4978c2419e4c1644022dd229f44f68c9d14c10177af084ee11ac932b0c1016 [2021-10-20 05:12:10,392 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-20 05:12:10,426 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-20 05:12:10,429 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-20 05:12:10,430 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-20 05:12:10,431 INFO L275 PluginConnector]: CDTParser initialized [2021-10-20 05:12:10,432 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d343eaad-db1c-4b20-b354-9f45bdba51b4/bin/utaipan-tZwUujhuQw/../../sv-benchmarks/c/product-lines/minepump_spec2_product41.cil.c [2021-10-20 05:12:10,520 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d343eaad-db1c-4b20-b354-9f45bdba51b4/bin/utaipan-tZwUujhuQw/data/110a51256/8eee541d0504400294e1625a070ea177/FLAG6a22ee01d [2021-10-20 05:12:11,003 INFO L306 CDTParser]: Found 1 translation units. [2021-10-20 05:12:11,003 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d343eaad-db1c-4b20-b354-9f45bdba51b4/sv-benchmarks/c/product-lines/minepump_spec2_product41.cil.c [2021-10-20 05:12:11,024 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d343eaad-db1c-4b20-b354-9f45bdba51b4/bin/utaipan-tZwUujhuQw/data/110a51256/8eee541d0504400294e1625a070ea177/FLAG6a22ee01d [2021-10-20 05:12:11,330 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d343eaad-db1c-4b20-b354-9f45bdba51b4/bin/utaipan-tZwUujhuQw/data/110a51256/8eee541d0504400294e1625a070ea177 [2021-10-20 05:12:11,332 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-20 05:12:11,334 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-20 05:12:11,336 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-20 05:12:11,336 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-20 05:12:11,339 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-20 05:12:11,340 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:12:11" (1/1) ... [2021-10-20 05:12:11,341 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e0a68b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:12:11, skipping insertion in model container [2021-10-20 05:12:11,342 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:12:11" (1/1) ... [2021-10-20 05:12:11,349 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-20 05:12:11,391 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-20 05:12:11,680 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_d343eaad-db1c-4b20-b354-9f45bdba51b4/sv-benchmarks/c/product-lines/minepump_spec2_product41.cil.c[17041,17054] [2021-10-20 05:12:11,688 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 05:12:11,705 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) [2021-10-20 05:12:11,706 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@543ada8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:12:11, skipping insertion in model container [2021-10-20 05:12:11,706 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-20 05:12:11,707 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-10-20 05:12:11,710 INFO L168 Benchmark]: Toolchain (without parser) took 374.03 ms. Allocated memory is still 100.7 MB. Free memory was 59.6 MB in the beginning and 72.4 MB in the end (delta: -12.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-20 05:12:11,712 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 100.7 MB. Free memory was 77.2 MB in the beginning and 77.1 MB in the end (delta: 54.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 05:12:11,714 INFO L168 Benchmark]: CACSL2BoogieTranslator took 371.17 ms. Allocated memory is still 100.7 MB. Free memory was 59.4 MB in the beginning and 72.4 MB in the end (delta: -13.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-20 05:12:11,717 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 100.7 MB. Free memory was 77.2 MB in the beginning and 77.1 MB in the end (delta: 54.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 371.17 ms. Allocated memory is still 100.7 MB. Free memory was 59.4 MB in the beginning and 72.4 MB in the end (delta: -13.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 120]: 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 [2021-10-20 05:12:13,899 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-20 05:12:13,902 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-20 05:12:13,958 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-20 05:12:13,958 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-20 05:12:13,963 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-20 05:12:13,965 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-20 05:12:13,972 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-20 05:12:13,976 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-20 05:12:13,983 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-20 05:12:13,985 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-20 05:12:13,987 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-20 05:12:13,987 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-20 05:12:13,990 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-20 05:12:13,992 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-20 05:12:13,997 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-20 05:12:13,999 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-20 05:12:14,000 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-20 05:12:14,003 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-20 05:12:14,010 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-20 05:12:14,012 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-20 05:12:14,014 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-20 05:12:14,018 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-20 05:12:14,020 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-20 05:12:14,032 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-20 05:12:14,032 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-20 05:12:14,032 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-20 05:12:14,034 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-20 05:12:14,035 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-20 05:12:14,036 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-20 05:12:14,036 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-20 05:12:14,037 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-20 05:12:14,039 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-20 05:12:14,040 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-20 05:12:14,042 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-20 05:12:14,042 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-20 05:12:14,043 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-20 05:12:14,043 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-20 05:12:14,043 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-20 05:12:14,045 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-20 05:12:14,046 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-20 05:12:14,047 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d343eaad-db1c-4b20-b354-9f45bdba51b4/bin/utaipan-tZwUujhuQw/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-20 05:12:14,092 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-20 05:12:14,093 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-20 05:12:14,094 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-20 05:12:14,094 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-20 05:12:14,095 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-20 05:12:14,095 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-20 05:12:14,095 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-20 05:12:14,095 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-20 05:12:14,095 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-20 05:12:14,097 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-20 05:12:14,098 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-20 05:12:14,098 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-20 05:12:14,098 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-20 05:12:14,098 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-20 05:12:14,099 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-20 05:12:14,099 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-20 05:12:14,099 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-20 05:12:14,099 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-20 05:12:14,099 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-20 05:12:14,099 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-20 05:12:14,100 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-20 05:12:14,100 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-20 05:12:14,100 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-20 05:12:14,100 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-20 05:12:14,100 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-20 05:12:14,101 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-20 05:12:14,101 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 05:12:14,101 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-20 05:12:14,101 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-20 05:12:14,101 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-20 05:12:14,102 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-20 05:12:14,102 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-20 05:12:14,102 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-20 05:12:14,102 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-20 05:12:14,103 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-20 05:12:14,103 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_d343eaad-db1c-4b20-b354-9f45bdba51b4/bin/utaipan-tZwUujhuQw/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d343eaad-db1c-4b20-b354-9f45bdba51b4/bin/utaipan-tZwUujhuQw Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2e4978c2419e4c1644022dd229f44f68c9d14c10177af084ee11ac932b0c1016 [2021-10-20 05:12:14,502 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-20 05:12:14,535 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-20 05:12:14,538 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-20 05:12:14,539 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-20 05:12:14,540 INFO L275 PluginConnector]: CDTParser initialized [2021-10-20 05:12:14,542 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d343eaad-db1c-4b20-b354-9f45bdba51b4/bin/utaipan-tZwUujhuQw/../../sv-benchmarks/c/product-lines/minepump_spec2_product41.cil.c [2021-10-20 05:12:14,618 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d343eaad-db1c-4b20-b354-9f45bdba51b4/bin/utaipan-tZwUujhuQw/data/39cca9e99/c8202b07b15d4ab18e2c2aa9c38a7297/FLAG7ea6323f9 [2021-10-20 05:12:15,302 INFO L306 CDTParser]: Found 1 translation units. [2021-10-20 05:12:15,302 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d343eaad-db1c-4b20-b354-9f45bdba51b4/sv-benchmarks/c/product-lines/minepump_spec2_product41.cil.c [2021-10-20 05:12:15,323 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d343eaad-db1c-4b20-b354-9f45bdba51b4/bin/utaipan-tZwUujhuQw/data/39cca9e99/c8202b07b15d4ab18e2c2aa9c38a7297/FLAG7ea6323f9 [2021-10-20 05:12:15,619 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d343eaad-db1c-4b20-b354-9f45bdba51b4/bin/utaipan-tZwUujhuQw/data/39cca9e99/c8202b07b15d4ab18e2c2aa9c38a7297 [2021-10-20 05:12:15,624 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-20 05:12:15,626 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-20 05:12:15,639 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-20 05:12:15,639 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-20 05:12:15,642 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-20 05:12:15,643 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:12:15" (1/1) ... [2021-10-20 05:12:15,643 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d1b1293 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:12:15, skipping insertion in model container [2021-10-20 05:12:15,644 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:12:15" (1/1) ... [2021-10-20 05:12:15,652 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-20 05:12:15,694 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-20 05:12:16,128 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_d343eaad-db1c-4b20-b354-9f45bdba51b4/sv-benchmarks/c/product-lines/minepump_spec2_product41.cil.c[17041,17054] [2021-10-20 05:12:16,136 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 05:12:16,159 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-20 05:12:16,184 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-20 05:12:16,272 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_d343eaad-db1c-4b20-b354-9f45bdba51b4/sv-benchmarks/c/product-lines/minepump_spec2_product41.cil.c[17041,17054] [2021-10-20 05:12:16,275 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 05:12:16,290 INFO L203 MainTranslator]: Completed pre-run [2021-10-20 05:12:16,340 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_d343eaad-db1c-4b20-b354-9f45bdba51b4/sv-benchmarks/c/product-lines/minepump_spec2_product41.cil.c[17041,17054] [2021-10-20 05:12:16,343 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 05:12:16,363 INFO L208 MainTranslator]: Completed translation [2021-10-20 05:12:16,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:12:16 WrapperNode [2021-10-20 05:12:16,363 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-20 05:12:16,364 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-20 05:12:16,365 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-20 05:12:16,365 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-20 05:12:16,372 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:12:16" (1/1) ... [2021-10-20 05:12:16,390 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:12:16" (1/1) ... [2021-10-20 05:12:16,428 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-20 05:12:16,429 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-20 05:12:16,429 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-20 05:12:16,429 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-20 05:12:16,438 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:12:16" (1/1) ... [2021-10-20 05:12:16,438 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:12:16" (1/1) ... [2021-10-20 05:12:16,449 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:12:16" (1/1) ... [2021-10-20 05:12:16,462 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:12:16" (1/1) ... [2021-10-20 05:12:16,489 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:12:16" (1/1) ... [2021-10-20 05:12:16,500 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:12:16" (1/1) ... [2021-10-20 05:12:16,516 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:12:16" (1/1) ... [2021-10-20 05:12:16,524 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-20 05:12:16,525 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-20 05:12:16,526 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-20 05:12:16,526 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-20 05:12:16,527 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:12:16" (1/1) ... [2021-10-20 05:12:16,534 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 05:12:16,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d343eaad-db1c-4b20-b354-9f45bdba51b4/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 05:12:16,564 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d343eaad-db1c-4b20-b354-9f45bdba51b4/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-20 05:12:16,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d343eaad-db1c-4b20-b354-9f45bdba51b4/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-20 05:12:16,621 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-20 05:12:16,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-20 05:12:16,623 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-20 05:12:16,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-20 05:12:18,882 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-20 05:12:18,883 INFO L299 CfgBuilder]: Removed 116 assume(true) statements. [2021-10-20 05:12:18,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:12:18 BoogieIcfgContainer [2021-10-20 05:12:18,885 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-20 05:12:18,887 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-20 05:12:18,887 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-20 05:12:18,890 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-20 05:12:18,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 05:12:15" (1/3) ... [2021-10-20 05:12:18,891 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39e062ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:12:18, skipping insertion in model container [2021-10-20 05:12:18,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:12:16" (2/3) ... [2021-10-20 05:12:18,892 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39e062ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:12:18, skipping insertion in model container [2021-10-20 05:12:18,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:12:18" (3/3) ... [2021-10-20 05:12:18,894 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product41.cil.c [2021-10-20 05:12:18,899 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-20 05:12:18,899 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-20 05:12:18,948 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-20 05:12:18,955 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 [2021-10-20 05:12:18,955 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-20 05:12:18,972 INFO L276 IsEmpty]: Start isEmpty. Operand has 91 states, 87 states have (on average 1.5632183908045978) internal successors, (136), 90 states have internal predecessors, (136), 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) [2021-10-20 05:12:18,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-20 05:12:18,978 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:12:18,979 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:12:18,979 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:12:18,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:12:18,985 INFO L82 PathProgramCache]: Analyzing trace with hash -466361678, now seen corresponding path program 1 times [2021-10-20 05:12:18,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 05:12:19,000 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [527292020] [2021-10-20 05:12:19,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:12:19,001 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 05:12:19,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d343eaad-db1c-4b20-b354-9f45bdba51b4/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 05:12:19,002 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d343eaad-db1c-4b20-b354-9f45bdba51b4/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 05:12:19,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d343eaad-db1c-4b20-b354-9f45bdba51b4/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-20 05:12:19,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:12:19,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-20 05:12:19,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:12:19,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:12:19,331 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:12:19,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:12:19,403 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 05:12:19,403 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [527292020] [2021-10-20 05:12:19,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [527292020] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 05:12:19,404 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:12:19,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-20 05:12:19,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102255112] [2021-10-20 05:12:19,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-20 05:12:19,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 05:12:19,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-20 05:12:19,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-20 05:12:19,432 INFO L87 Difference]: Start difference. First operand has 91 states, 87 states have (on average 1.5632183908045978) internal successors, (136), 90 states have internal predecessors, (136), 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) [2021-10-20 05:12:19,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:12:19,498 INFO L93 Difference]: Finished difference Result 175 states and 264 transitions. [2021-10-20 05:12:19,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-20 05:12:19,500 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 [2021-10-20 05:12:19,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:12:19,511 INFO L225 Difference]: With dead ends: 175 [2021-10-20 05:12:19,512 INFO L226 Difference]: Without dead ends: 87 [2021-10-20 05:12:19,515 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 [2021-10-20 05:12:19,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-10-20 05:12:19,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2021-10-20 05:12:19,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 84 states have (on average 1.4761904761904763) internal successors, (124), 86 states have internal predecessors, (124), 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) [2021-10-20 05:12:19,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 124 transitions. [2021-10-20 05:12:19,573 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 124 transitions. Word has length 18 [2021-10-20 05:12:19,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:12:19,573 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 124 transitions. [2021-10-20 05:12:19,575 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) [2021-10-20 05:12:19,575 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 124 transitions. [2021-10-20 05:12:19,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-20 05:12:19,576 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:12:19,576 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:12:19,595 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d343eaad-db1c-4b20-b354-9f45bdba51b4/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-20 05:12:19,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d343eaad-db1c-4b20-b354-9f45bdba51b4/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 05:12:19,792 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:12:19,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:12:19,792 INFO L82 PathProgramCache]: Analyzing trace with hash 1078824867, now seen corresponding path program 1 times [2021-10-20 05:12:19,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 05:12:19,793 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1245828691] [2021-10-20 05:12:19,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:12:19,794 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 05:12:19,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d343eaad-db1c-4b20-b354-9f45bdba51b4/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 05:12:19,795 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d343eaad-db1c-4b20-b354-9f45bdba51b4/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 05:12:19,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d343eaad-db1c-4b20-b354-9f45bdba51b4/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-20 05:12:19,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:12:19,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-20 05:12:19,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:12:20,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:12:20,082 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:12:20,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:12:20,156 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 05:12:20,156 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1245828691] [2021-10-20 05:12:20,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1245828691] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 05:12:20,156 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:12:20,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-20 05:12:20,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438955469] [2021-10-20 05:12:20,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-20 05:12:20,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 05:12:20,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-20 05:12:20,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-20 05:12:20,166 INFO L87 Difference]: Start difference. First operand 87 states and 124 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) [2021-10-20 05:12:20,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:12:20,188 INFO L93 Difference]: Finished difference Result 87 states and 124 transitions. [2021-10-20 05:12:20,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-20 05:12:20,189 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 [2021-10-20 05:12:20,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:12:20,190 INFO L225 Difference]: With dead ends: 87 [2021-10-20 05:12:20,190 INFO L226 Difference]: Without dead ends: 39 [2021-10-20 05:12:20,192 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-20 05:12:20,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-10-20 05:12:20,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-10-20 05:12:20,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.4473684210526316) internal successors, (55), 38 states have internal predecessors, (55), 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) [2021-10-20 05:12:20,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 55 transitions. [2021-10-20 05:12:20,203 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 55 transitions. Word has length 19 [2021-10-20 05:12:20,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:12:20,204 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 55 transitions. [2021-10-20 05:12:20,204 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) [2021-10-20 05:12:20,204 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 55 transitions. [2021-10-20 05:12:20,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-20 05:12:20,205 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:12:20,211 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] [2021-10-20 05:12:20,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d343eaad-db1c-4b20-b354-9f45bdba51b4/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-20 05:12:20,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d343eaad-db1c-4b20-b354-9f45bdba51b4/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 05:12:20,423 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:12:20,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:12:20,424 INFO L82 PathProgramCache]: Analyzing trace with hash -1959799754, now seen corresponding path program 1 times [2021-10-20 05:12:20,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 05:12:20,425 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1877535616] [2021-10-20 05:12:20,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:12:20,426 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 05:12:20,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d343eaad-db1c-4b20-b354-9f45bdba51b4/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 05:12:20,427 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d343eaad-db1c-4b20-b354-9f45bdba51b4/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 05:12:20,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d343eaad-db1c-4b20-b354-9f45bdba51b4/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-20 05:12:20,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:12:20,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-20 05:12:20,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:12:20,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:12:20,731 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:12:20,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:12:20,869 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 05:12:20,869 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1877535616] [2021-10-20 05:12:20,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1877535616] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 05:12:20,870 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:12:20,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-20 05:12:20,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135935511] [2021-10-20 05:12:20,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-20 05:12:20,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 05:12:20,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-20 05:12:20,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-20 05:12:20,874 INFO L87 Difference]: Start difference. First operand 39 states and 55 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) [2021-10-20 05:12:20,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:12:20,886 INFO L93 Difference]: Finished difference Result 71 states and 103 transitions. [2021-10-20 05:12:20,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-20 05:12:20,886 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 [2021-10-20 05:12:20,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:12:20,889 INFO L225 Difference]: With dead ends: 71 [2021-10-20 05:12:20,889 INFO L226 Difference]: Without dead ends: 39 [2021-10-20 05:12:20,890 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-20 05:12:20,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-10-20 05:12:20,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-10-20 05:12:20,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.4210526315789473) internal successors, (54), 38 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) [2021-10-20 05:12:20,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 54 transitions. [2021-10-20 05:12:20,902 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 54 transitions. Word has length 24 [2021-10-20 05:12:20,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:12:20,902 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 54 transitions. [2021-10-20 05:12:20,904 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) [2021-10-20 05:12:20,904 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 54 transitions. [2021-10-20 05:12:20,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-20 05:12:20,906 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:12:20,906 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] [2021-10-20 05:12:20,919 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d343eaad-db1c-4b20-b354-9f45bdba51b4/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-20 05:12:21,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d343eaad-db1c-4b20-b354-9f45bdba51b4/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 05:12:21,119 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:12:21,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:12:21,119 INFO L82 PathProgramCache]: Analyzing trace with hash -2070782503, now seen corresponding path program 1 times [2021-10-20 05:12:21,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 05:12:21,120 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [292540530] [2021-10-20 05:12:21,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:12:21,121 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 05:12:21,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d343eaad-db1c-4b20-b354-9f45bdba51b4/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 05:12:21,129 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d343eaad-db1c-4b20-b354-9f45bdba51b4/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 05:12:21,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d343eaad-db1c-4b20-b354-9f45bdba51b4/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-20 05:12:21,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:12:21,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-20 05:12:21,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:12:21,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:12:21,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:12:21,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:12:21,482 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 05:12:21,482 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [292540530] [2021-10-20 05:12:21,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [292540530] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 05:12:21,483 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:12:21,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-20 05:12:21,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798102998] [2021-10-20 05:12:21,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-20 05:12:21,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 05:12:21,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-20 05:12:21,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 05:12:21,484 INFO L87 Difference]: Start difference. First operand 39 states and 54 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) [2021-10-20 05:12:21,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:12:21,534 INFO L93 Difference]: Finished difference Result 93 states and 133 transitions. [2021-10-20 05:12:21,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-20 05:12:21,535 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 [2021-10-20 05:12:21,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:12:21,536 INFO L225 Difference]: With dead ends: 93 [2021-10-20 05:12:21,536 INFO L226 Difference]: Without dead ends: 61 [2021-10-20 05:12:21,536 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 05:12:21,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-10-20 05:12:21,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 59. [2021-10-20 05:12:21,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.4310344827586208) internal successors, (83), 58 states have internal predecessors, (83), 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) [2021-10-20 05:12:21,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 83 transitions. [2021-10-20 05:12:21,543 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 83 transitions. Word has length 25 [2021-10-20 05:12:21,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:12:21,543 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 83 transitions. [2021-10-20 05:12:21,543 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) [2021-10-20 05:12:21,543 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 83 transitions. [2021-10-20 05:12:21,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-20 05:12:21,544 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:12:21,544 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] [2021-10-20 05:12:21,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d343eaad-db1c-4b20-b354-9f45bdba51b4/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-20 05:12:21,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d343eaad-db1c-4b20-b354-9f45bdba51b4/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 05:12:21,745 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:12:21,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:12:21,745 INFO L82 PathProgramCache]: Analyzing trace with hash -576163675, now seen corresponding path program 1 times [2021-10-20 05:12:21,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 05:12:21,746 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [89040441] [2021-10-20 05:12:21,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:12:21,746 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 05:12:21,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d343eaad-db1c-4b20-b354-9f45bdba51b4/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 05:12:21,747 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d343eaad-db1c-4b20-b354-9f45bdba51b4/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 05:12:21,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d343eaad-db1c-4b20-b354-9f45bdba51b4/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-20 05:12:21,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:12:21,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-20 05:12:21,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:12:22,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:12:22,130 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:12:22,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:12:22,243 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 05:12:22,243 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [89040441] [2021-10-20 05:12:22,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [89040441] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 05:12:22,243 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:12:22,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-20 05:12:22,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667240962] [2021-10-20 05:12:22,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-20 05:12:22,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 05:12:22,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-20 05:12:22,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-20 05:12:22,245 INFO L87 Difference]: Start difference. First operand 59 states and 83 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 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) [2021-10-20 05:12:22,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:12:22,359 INFO L93 Difference]: Finished difference Result 271 states and 394 transitions. [2021-10-20 05:12:22,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-20 05:12:22,359 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 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 31 [2021-10-20 05:12:22,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:12:22,362 INFO L225 Difference]: With dead ends: 271 [2021-10-20 05:12:22,362 INFO L226 Difference]: Without dead ends: 219 [2021-10-20 05:12:22,363 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 42.9ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-20 05:12:22,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2021-10-20 05:12:22,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 103. [2021-10-20 05:12:22,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 102 states have (on average 1.411764705882353) internal successors, (144), 102 states have internal predecessors, (144), 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) [2021-10-20 05:12:22,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 144 transitions. [2021-10-20 05:12:22,381 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 144 transitions. Word has length 31 [2021-10-20 05:12:22,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:12:22,381 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 144 transitions. [2021-10-20 05:12:22,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 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) [2021-10-20 05:12:22,381 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 144 transitions. [2021-10-20 05:12:22,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-20 05:12:22,383 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:12:22,383 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] [2021-10-20 05:12:22,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d343eaad-db1c-4b20-b354-9f45bdba51b4/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-20 05:12:22,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d343eaad-db1c-4b20-b354-9f45bdba51b4/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 05:12:22,584 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:12:22,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:12:22,584 INFO L82 PathProgramCache]: Analyzing trace with hash 1086399261, now seen corresponding path program 1 times [2021-10-20 05:12:22,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 05:12:22,585 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [29205494] [2021-10-20 05:12:22,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:12:22,586 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 05:12:22,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d343eaad-db1c-4b20-b354-9f45bdba51b4/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 05:12:22,587 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d343eaad-db1c-4b20-b354-9f45bdba51b4/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 05:12:22,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d343eaad-db1c-4b20-b354-9f45bdba51b4/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-20 05:12:22,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:12:22,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-20 05:12:22,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:12:22,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:12:22,942 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:12:23,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:12:23,033 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 05:12:23,034 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [29205494] [2021-10-20 05:12:23,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [29205494] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 05:12:23,034 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:12:23,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-20 05:12:23,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784341050] [2021-10-20 05:12:23,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-20 05:12:23,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 05:12:23,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-20 05:12:23,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-20 05:12:23,036 INFO L87 Difference]: Start difference. First operand 103 states and 144 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) [2021-10-20 05:12:23,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:12:23,176 INFO L93 Difference]: Finished difference Result 376 states and 533 transitions. [2021-10-20 05:12:23,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-20 05:12:23,179 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 [2021-10-20 05:12:23,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:12:23,181 INFO L225 Difference]: With dead ends: 376 [2021-10-20 05:12:23,181 INFO L226 Difference]: Without dead ends: 280 [2021-10-20 05:12:23,184 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 42.5ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-20 05:12:23,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2021-10-20 05:12:23,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 102. [2021-10-20 05:12:23,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 1.396039603960396) internal successors, (141), 101 states have internal predecessors, (141), 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) [2021-10-20 05:12:23,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 141 transitions. [2021-10-20 05:12:23,217 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 141 transitions. Word has length 32 [2021-10-20 05:12:23,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:12:23,219 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 141 transitions. [2021-10-20 05:12:23,219 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) [2021-10-20 05:12:23,219 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 141 transitions. [2021-10-20 05:12:23,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-20 05:12:23,223 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:12:23,223 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, 1, 1] [2021-10-20 05:12:23,234 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d343eaad-db1c-4b20-b354-9f45bdba51b4/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-10-20 05:12:23,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d343eaad-db1c-4b20-b354-9f45bdba51b4/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 05:12:23,424 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:12:23,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:12:23,425 INFO L82 PathProgramCache]: Analyzing trace with hash 477559900, now seen corresponding path program 1 times [2021-10-20 05:12:23,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 05:12:23,426 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1104680929] [2021-10-20 05:12:23,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:12:23,426 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 05:12:23,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d343eaad-db1c-4b20-b354-9f45bdba51b4/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 05:12:23,427 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d343eaad-db1c-4b20-b354-9f45bdba51b4/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 05:12:23,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d343eaad-db1c-4b20-b354-9f45bdba51b4/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-20 05:12:23,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:12:23,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-20 05:12:23,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:12:23,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:12:23,788 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:12:23,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:12:23,877 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 05:12:23,877 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1104680929] [2021-10-20 05:12:23,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1104680929] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 05:12:23,878 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:12:23,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-20 05:12:23,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030165292] [2021-10-20 05:12:23,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-20 05:12:23,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 05:12:23,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-20 05:12:23,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-20 05:12:23,881 INFO L87 Difference]: Start difference. First operand 102 states and 141 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 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) [2021-10-20 05:12:23,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:12:23,928 INFO L93 Difference]: Finished difference Result 273 states and 377 transitions. [2021-10-20 05:12:23,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-20 05:12:23,928 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 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 35 [2021-10-20 05:12:23,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:12:23,930 INFO L225 Difference]: With dead ends: 273 [2021-10-20 05:12:23,930 INFO L226 Difference]: Without dead ends: 178 [2021-10-20 05:12:23,931 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.0ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-20 05:12:23,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-10-20 05:12:23,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 108. [2021-10-20 05:12:23,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 1.3738317757009346) internal successors, (147), 107 states have internal predecessors, (147), 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) [2021-10-20 05:12:23,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 147 transitions. [2021-10-20 05:12:23,949 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 147 transitions. Word has length 35 [2021-10-20 05:12:23,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:12:23,950 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 147 transitions. [2021-10-20 05:12:23,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 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) [2021-10-20 05:12:23,950 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 147 transitions. [2021-10-20 05:12:23,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-20 05:12:23,951 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:12:23,952 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, 1, 1] [2021-10-20 05:12:23,964 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d343eaad-db1c-4b20-b354-9f45bdba51b4/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-20 05:12:24,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d343eaad-db1c-4b20-b354-9f45bdba51b4/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 05:12:24,159 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:12:24,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:12:24,159 INFO L82 PathProgramCache]: Analyzing trace with hash -533557350, now seen corresponding path program 1 times [2021-10-20 05:12:24,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 05:12:24,160 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2019984167] [2021-10-20 05:12:24,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:12:24,160 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 05:12:24,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d343eaad-db1c-4b20-b354-9f45bdba51b4/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 05:12:24,161 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d343eaad-db1c-4b20-b354-9f45bdba51b4/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 05:12:24,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d343eaad-db1c-4b20-b354-9f45bdba51b4/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-20 05:12:24,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:12:24,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-20 05:12:24,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:12:24,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:12:24,502 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:12:24,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:12:24,611 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 05:12:24,612 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2019984167] [2021-10-20 05:12:24,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2019984167] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 05:12:24,613 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:12:24,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-20 05:12:24,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297179851] [2021-10-20 05:12:24,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-20 05:12:24,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 05:12:24,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-20 05:12:24,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-20 05:12:24,619 INFO L87 Difference]: Start difference. First operand 108 states and 147 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 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) [2021-10-20 05:12:24,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:12:24,674 INFO L93 Difference]: Finished difference Result 291 states and 395 transitions. [2021-10-20 05:12:24,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-20 05:12:24,675 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 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 35 [2021-10-20 05:12:24,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:12:24,676 INFO L225 Difference]: With dead ends: 291 [2021-10-20 05:12:24,677 INFO L226 Difference]: Without dead ends: 190 [2021-10-20 05:12:24,677 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 20.2ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-20 05:12:24,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-10-20 05:12:24,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 112. [2021-10-20 05:12:24,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.3603603603603605) internal successors, (151), 111 states have internal predecessors, (151), 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) [2021-10-20 05:12:24,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 151 transitions. [2021-10-20 05:12:24,700 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 151 transitions. Word has length 35 [2021-10-20 05:12:24,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:12:24,700 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 151 transitions. [2021-10-20 05:12:24,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 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) [2021-10-20 05:12:24,701 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 151 transitions. [2021-10-20 05:12:24,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-20 05:12:24,706 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:12:24,706 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, 1, 1] [2021-10-20 05:12:24,723 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d343eaad-db1c-4b20-b354-9f45bdba51b4/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-20 05:12:24,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d343eaad-db1c-4b20-b354-9f45bdba51b4/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 05:12:24,919 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:12:24,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:12:24,919 INFO L82 PathProgramCache]: Analyzing trace with hash -1554625704, now seen corresponding path program 1 times [2021-10-20 05:12:24,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 05:12:24,920 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [258420614] [2021-10-20 05:12:24,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:12:24,920 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 05:12:24,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d343eaad-db1c-4b20-b354-9f45bdba51b4/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 05:12:24,921 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d343eaad-db1c-4b20-b354-9f45bdba51b4/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 05:12:24,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d343eaad-db1c-4b20-b354-9f45bdba51b4/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-20 05:12:25,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:12:25,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-20 05:12:25,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:12:25,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:12:25,295 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:12:25,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:12:25,404 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 05:12:25,405 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [258420614] [2021-10-20 05:12:25,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [258420614] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 05:12:25,405 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:12:25,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-20 05:12:25,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118182219] [2021-10-20 05:12:25,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-20 05:12:25,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 05:12:25,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-20 05:12:25,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-20 05:12:25,407 INFO L87 Difference]: Start difference. First operand 112 states and 151 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 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) [2021-10-20 05:12:25,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:12:25,458 INFO L93 Difference]: Finished difference Result 350 states and 475 transitions. [2021-10-20 05:12:25,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-20 05:12:25,459 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 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 35 [2021-10-20 05:12:25,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:12:25,461 INFO L225 Difference]: With dead ends: 350 [2021-10-20 05:12:25,461 INFO L226 Difference]: Without dead ends: 245 [2021-10-20 05:12:25,461 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-20 05:12:25,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2021-10-20 05:12:25,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 195. [2021-10-20 05:12:25,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 194 states have (on average 1.3505154639175259) internal successors, (262), 194 states have internal predecessors, (262), 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) [2021-10-20 05:12:25,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 262 transitions. [2021-10-20 05:12:25,487 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 262 transitions. Word has length 35 [2021-10-20 05:12:25,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:12:25,487 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 262 transitions. [2021-10-20 05:12:25,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 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) [2021-10-20 05:12:25,488 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 262 transitions. [2021-10-20 05:12:25,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-20 05:12:25,489 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:12:25,489 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, 1, 1, 1] [2021-10-20 05:12:25,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d343eaad-db1c-4b20-b354-9f45bdba51b4/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-20 05:12:25,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d343eaad-db1c-4b20-b354-9f45bdba51b4/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 05:12:25,702 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:12:25,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:12:25,703 INFO L82 PathProgramCache]: Analyzing trace with hash -1879284200, now seen corresponding path program 1 times [2021-10-20 05:12:25,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 05:12:25,704 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [331639857] [2021-10-20 05:12:25,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:12:25,704 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 05:12:25,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d343eaad-db1c-4b20-b354-9f45bdba51b4/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 05:12:25,705 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d343eaad-db1c-4b20-b354-9f45bdba51b4/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 05:12:25,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d343eaad-db1c-4b20-b354-9f45bdba51b4/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-20 05:12:26,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:12:26,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-20 05:12:26,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:12:26,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:12:26,139 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:12:26,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:12:26,271 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 05:12:26,271 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [331639857] [2021-10-20 05:12:26,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [331639857] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 05:12:26,272 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:12:26,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-10-20 05:12:26,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875201846] [2021-10-20 05:12:26,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-20 05:12:26,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 05:12:26,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-20 05:12:26,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-20 05:12:26,273 INFO L87 Difference]: Start difference. First operand 195 states and 262 transitions. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 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) [2021-10-20 05:12:28,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:12:28,968 INFO L93 Difference]: Finished difference Result 793 states and 1045 transitions. [2021-10-20 05:12:28,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-20 05:12:28,969 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 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 36 [2021-10-20 05:12:28,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:12:28,973 INFO L225 Difference]: With dead ends: 793 [2021-10-20 05:12:28,973 INFO L226 Difference]: Without dead ends: 605 [2021-10-20 05:12:28,974 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 157.1ms TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2021-10-20 05:12:28,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2021-10-20 05:12:29,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 195. [2021-10-20 05:12:29,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 194 states have (on average 1.324742268041237) internal successors, (257), 194 states have internal predecessors, (257), 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) [2021-10-20 05:12:29,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 257 transitions. [2021-10-20 05:12:29,006 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 257 transitions. Word has length 36 [2021-10-20 05:12:29,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:12:29,007 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 257 transitions. [2021-10-20 05:12:29,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 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) [2021-10-20 05:12:29,007 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 257 transitions. [2021-10-20 05:12:29,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-10-20 05:12:29,008 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:12:29,008 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:12:29,023 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d343eaad-db1c-4b20-b354-9f45bdba51b4/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-20 05:12:29,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d343eaad-db1c-4b20-b354-9f45bdba51b4/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 05:12:29,221 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:12:29,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:12:29,222 INFO L82 PathProgramCache]: Analyzing trace with hash 749013372, now seen corresponding path program 1 times [2021-10-20 05:12:29,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 05:12:29,222 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1659199410] [2021-10-20 05:12:29,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:12:29,223 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 05:12:29,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d343eaad-db1c-4b20-b354-9f45bdba51b4/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 05:12:29,224 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d343eaad-db1c-4b20-b354-9f45bdba51b4/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 05:12:29,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d343eaad-db1c-4b20-b354-9f45bdba51b4/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-20 05:12:29,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:12:29,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-20 05:12:29,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:12:29,695 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:12:29,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:12:29,820 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:12:29,820 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 05:12:29,821 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1659199410] [2021-10-20 05:12:29,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1659199410] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 05:12:29,821 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:12:29,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-20 05:12:29,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913904742] [2021-10-20 05:12:29,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-20 05:12:29,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 05:12:29,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-20 05:12:29,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 05:12:29,823 INFO L87 Difference]: Start difference. First operand 195 states and 257 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2021-10-20 05:12:29,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:12:29,893 INFO L93 Difference]: Finished difference Result 319 states and 420 transitions. [2021-10-20 05:12:29,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-20 05:12:29,894 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 51 [2021-10-20 05:12:29,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:12:29,897 INFO L225 Difference]: With dead ends: 319 [2021-10-20 05:12:29,898 INFO L226 Difference]: Without dead ends: 317 [2021-10-20 05:12:29,898 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 05:12:29,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2021-10-20 05:12:29,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 235. [2021-10-20 05:12:29,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 234 states have (on average 1.3504273504273505) internal successors, (316), 234 states have internal predecessors, (316), 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) [2021-10-20 05:12:29,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 316 transitions. [2021-10-20 05:12:29,932 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 316 transitions. Word has length 51 [2021-10-20 05:12:29,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:12:29,933 INFO L470 AbstractCegarLoop]: Abstraction has 235 states and 316 transitions. [2021-10-20 05:12:29,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2021-10-20 05:12:29,933 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 316 transitions. [2021-10-20 05:12:29,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-10-20 05:12:29,935 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:12:29,936 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-10-20 05:12:29,948 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d343eaad-db1c-4b20-b354-9f45bdba51b4/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-20 05:12:30,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d343eaad-db1c-4b20-b354-9f45bdba51b4/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 05:12:30,149 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:12:30,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:12:30,149 INFO L82 PathProgramCache]: Analyzing trace with hash 1849817445, now seen corresponding path program 1 times [2021-10-20 05:12:30,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 05:12:30,150 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [971613396] [2021-10-20 05:12:30,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:12:30,150 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 05:12:30,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d343eaad-db1c-4b20-b354-9f45bdba51b4/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 05:12:30,151 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d343eaad-db1c-4b20-b354-9f45bdba51b4/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 05:12:30,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d343eaad-db1c-4b20-b354-9f45bdba51b4/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-20 05:12:31,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-20 05:12:31,665 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-20 05:12:32,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-20 05:12:33,019 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-20 05:12:33,019 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-20 05:12:33,020 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-20 05:12:33,022 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-20 05:12:33,023 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-20 05:12:33,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d343eaad-db1c-4b20-b354-9f45bdba51b4/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-20 05:12:33,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d343eaad-db1c-4b20-b354-9f45bdba51b4/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 05:12:33,246 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-20 05:12:33,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 05:12:33 BoogieIcfgContainer [2021-10-20 05:12:33,415 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-20 05:12:33,416 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-20 05:12:33,416 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-20 05:12:33,416 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-20 05:12:33,417 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:12:18" (3/4) ... [2021-10-20 05:12:33,419 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-20 05:12:33,560 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d343eaad-db1c-4b20-b354-9f45bdba51b4/bin/utaipan-tZwUujhuQw/witness.graphml [2021-10-20 05:12:33,560 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-20 05:12:33,561 INFO L168 Benchmark]: Toolchain (without parser) took 17934.98 ms. Allocated memory was 71.3 MB in the beginning and 109.1 MB in the end (delta: 37.7 MB). Free memory was 47.8 MB in the beginning and 62.8 MB in the end (delta: -15.0 MB). Peak memory consumption was 60.6 MB. Max. memory is 16.1 GB. [2021-10-20 05:12:33,562 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 52.4 MB. Free memory was 32.8 MB in the beginning and 32.8 MB in the end (delta: 42.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 05:12:33,562 INFO L168 Benchmark]: CACSL2BoogieTranslator took 724.89 ms. Allocated memory is still 71.3 MB. Free memory was 47.7 MB in the beginning and 38.6 MB in the end (delta: 9.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-20 05:12:33,563 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.74 ms. Allocated memory is still 71.3 MB. Free memory was 38.5 MB in the beginning and 35.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-20 05:12:33,563 INFO L168 Benchmark]: Boogie Preprocessor took 95.96 ms. Allocated memory is still 71.3 MB. Free memory was 35.3 MB in the beginning and 52.5 MB in the end (delta: -17.1 MB). Peak memory consumption was 5.7 MB. Max. memory is 16.1 GB. [2021-10-20 05:12:33,564 INFO L168 Benchmark]: RCFGBuilder took 2359.76 ms. Allocated memory was 71.3 MB in the beginning and 90.2 MB in the end (delta: 18.9 MB). Free memory was 52.2 MB in the beginning and 62.0 MB in the end (delta: -9.9 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2021-10-20 05:12:33,564 INFO L168 Benchmark]: TraceAbstraction took 14528.43 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 61.5 MB in the beginning and 35.3 MB in the end (delta: 26.2 MB). Peak memory consumption was 44.5 MB. Max. memory is 16.1 GB. [2021-10-20 05:12:33,564 INFO L168 Benchmark]: Witness Printer took 144.18 ms. Allocated memory is still 109.1 MB. Free memory was 35.3 MB in the beginning and 62.8 MB in the end (delta: -27.5 MB). Peak memory consumption was 11.3 MB. Max. memory is 16.1 GB. [2021-10-20 05:12:33,566 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 52.4 MB. Free memory was 32.8 MB in the beginning and 32.8 MB in the end (delta: 42.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 724.89 ms. Allocated memory is still 71.3 MB. Free memory was 47.7 MB in the beginning and 38.6 MB in the end (delta: 9.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 63.74 ms. Allocated memory is still 71.3 MB. Free memory was 38.5 MB in the beginning and 35.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 95.96 ms. Allocated memory is still 71.3 MB. Free memory was 35.3 MB in the beginning and 52.5 MB in the end (delta: -17.1 MB). Peak memory consumption was 5.7 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2359.76 ms. Allocated memory was 71.3 MB in the beginning and 90.2 MB in the end (delta: 18.9 MB). Free memory was 52.2 MB in the beginning and 62.0 MB in the end (delta: -9.9 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 14528.43 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 61.5 MB in the beginning and 35.3 MB in the end (delta: 26.2 MB). Peak memory consumption was 44.5 MB. Max. memory is 16.1 GB. * Witness Printer took 144.18 ms. Allocated memory is still 109.1 MB. Free memory was 35.3 MB in the beginning and 62.8 MB in the end (delta: -27.5 MB). Peak memory consumption was 11.3 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: 840]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L53] int methAndRunningLastTime ; [L261] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L465] int pumpRunning = 0; [L466] int systemActive = 1; [L638] int waterLevel = 1; [L639] int methaneLevelCritical = 0; [L845] int cleanupTimeShifts = 4; VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L919] int retValue_acc ; [L920] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L827] int retValue_acc ; [L830] retValue_acc = 1 [L831] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L926] tmp = valid_product() [L928] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L58] methAndRunningLastTime = 0 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L734] int splverifierCounter ; [L735] int tmp ; [L736] int tmp___0 ; [L737] int tmp___1 ; [L738] int tmp___2 ; [L741] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L743] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L745] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L751] tmp = __VERIFIER_nondet_int() [L753] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L656] COND TRUE waterLevel < 2 [L657] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L761] tmp___0 = __VERIFIER_nondet_int() [L763] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L771] tmp___2 = __VERIFIER_nondet_int() [L773] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L472] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L479] COND TRUE \read(systemActive) [L501] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L504] COND TRUE ! pumpRunning [L616] int retValue_acc ; [L617] int tmp ; [L618] int tmp___0 ; [L718] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L721] COND FALSE !(waterLevel < 2) [L725] retValue_acc = 0 [L726] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L622] tmp = isHighWaterSensorDry() [L624] COND FALSE !(\read(tmp)) [L627] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L629] retValue_acc = tmp___0 [L630] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L506] tmp = isHighWaterLevel() [L508] COND TRUE \read(tmp) [L535] int tmp ; [L560] int retValue_acc ; [L677] int retValue_acc ; [L680] retValue_acc = methaneLevelCritical [L681] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L564] retValue_acc = isMethaneLevelCritical() [L566] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L539] tmp = isMethaneAlarm() [L541] COND FALSE !(\read(tmp)) [L529] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L63] int tmp ; [L64] int tmp___0 ; [L677] int retValue_acc ; [L680] retValue_acc = methaneLevelCritical [L681] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L68] tmp = isMethaneLevelCritical() [L70] COND FALSE !(\read(tmp)) [L86] methAndRunningLastTime = 0 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L743] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L745] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L751] tmp = __VERIFIER_nondet_int() [L753] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L761] tmp___0 = __VERIFIER_nondet_int() [L763] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L668] COND FALSE !(\read(methaneLevelCritical)) [L671] methaneLevelCritical = 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L771] tmp___2 = __VERIFIER_nondet_int() [L773] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L472] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L644] COND TRUE waterLevel > 0 [L645] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L479] COND TRUE \read(systemActive) [L501] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L504] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L63] int tmp ; [L64] int tmp___0 ; [L677] int retValue_acc ; [L680] retValue_acc = methaneLevelCritical [L681] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L68] tmp = isMethaneLevelCritical() [L70] COND TRUE \read(tmp) [L571] int retValue_acc ; [L574] retValue_acc = pumpRunning [L575] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L72] tmp___0 = isPumpRunning() [L74] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L75] COND FALSE !(\read(methAndRunningLastTime)) [L80] methAndRunningLastTime = 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L743] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L745] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L751] tmp = __VERIFIER_nondet_int() [L753] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L761] tmp___0 = __VERIFIER_nondet_int() [L763] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L771] tmp___2 = __VERIFIER_nondet_int() [L773] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L472] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L644] COND TRUE waterLevel > 0 [L645] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L479] COND TRUE \read(systemActive) [L501] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L504] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L63] int tmp ; [L64] int tmp___0 ; [L677] int retValue_acc ; [L680] retValue_acc = methaneLevelCritical [L681] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L68] tmp = isMethaneLevelCritical() [L70] COND TRUE \read(tmp) [L571] int retValue_acc ; [L574] retValue_acc = pumpRunning [L575] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L72] tmp___0 = isPumpRunning() [L74] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L75] COND TRUE \read(methAndRunningLastTime) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L840] reach_error() VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] - UnprovableResult [Line: 840]: 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: 840]: 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, 91 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 14298.1ms, OverallIterations: 12, TraceHistogramMax: 3, EmptinessCheckTime: 31.5ms, AutomataDifference: 3417.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 11.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 874 SDtfs, 1080 SDslu, 2268 SDs, 0 SdLazy, 253 SolverSat, 34 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2648.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 689 GetRequests, 640 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 317.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=235occurred in iteration=11, InterpolantAutomatonStates: 60, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 255.0ms AutomataMinimizationTime, 11 MinimizatonAttempts, 986 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 269.4ms SsaConstructionTime, 2520.7ms SatisfiabilityAnalysisTime, 2435.4ms InterpolantComputationTime, 410 NumberOfCodeBlocks, 410 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 660 ConstructedInterpolants, 0 QuantifiedInterpolants, 1156 SizeOfPredicates, 18 NumberOfNonLiveVariables, 2325 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 22 InterpolantComputations, 22 PerfectInterpolantSequences, 28/28 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! [2021-10-20 05:12:33,618 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d343eaad-db1c-4b20-b354-9f45bdba51b4/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...