./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec13_product24.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec21f90-23e4-4cc3-be7f-bdeb2653544e/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec21f90-23e4-4cc3-be7f-bdeb2653544e/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec21f90-23e4-4cc3-be7f-bdeb2653544e/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec21f90-23e4-4cc3-be7f-bdeb2653544e/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec13_product24.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec21f90-23e4-4cc3-be7f-bdeb2653544e/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec21f90-23e4-4cc3-be7f-bdeb2653544e/bin/utaipan-aC7eJsxGYH --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 89950477a2818e2be847e3014c0e2f9e906834037b4e328723302699ed4d9564 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:50:10,792 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:50:10,795 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:50:10,834 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:50:10,835 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:50:10,840 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:50:10,842 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:50:10,845 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:50:10,848 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:50:10,854 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:50:10,856 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:50:10,858 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:50:10,858 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:50:10,861 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:50:10,863 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:50:10,868 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:50:10,869 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:50:10,871 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:50:10,873 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:50:10,881 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:50:10,883 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:50:10,885 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:50:10,888 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:50:10,889 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:50:10,898 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:50:10,899 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:50:10,899 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:50:10,901 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:50:10,902 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:50:10,903 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:50:10,904 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:50:10,905 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:50:10,906 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:50:10,907 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:50:10,908 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:50:10,908 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:50:10,908 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:50:10,909 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:50:10,909 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:50:10,910 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:50:10,910 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:50:10,911 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec21f90-23e4-4cc3-be7f-bdeb2653544e/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 04:50:10,959 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:50:10,960 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:50:10,961 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:50:10,961 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:50:10,961 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:50:10,962 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:50:10,962 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 04:50:10,962 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:50:10,962 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:50:10,962 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 04:50:10,963 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 04:50:10,964 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:50:10,964 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 04:50:10,964 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 04:50:10,964 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 04:50:10,965 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:50:10,965 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:50:10,965 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:50:10,966 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:50:10,966 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:50:10,966 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:50:10,966 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:50:10,966 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:50:10,967 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:50:10,967 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:50:10,967 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:50:10,967 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:50:10,967 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:50:10,968 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:50:10,969 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:50:10,969 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:50:10,970 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:50:10,970 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:50:10,970 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:50:10,970 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 04:50:10,971 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 04:50:10,971 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:50:10,971 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:50:10,971 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:50:10,971 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_5ec21f90-23e4-4cc3-be7f-bdeb2653544e/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec21f90-23e4-4cc3-be7f-bdeb2653544e/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 89950477a2818e2be847e3014c0e2f9e906834037b4e328723302699ed4d9564 [2021-11-03 04:50:11,232 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:50:11,263 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:50:11,265 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:50:11,265 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:50:11,267 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:50:11,268 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec21f90-23e4-4cc3-be7f-bdeb2653544e/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/product-lines/elevator_spec13_product24.cil.c [2021-11-03 04:50:11,342 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec21f90-23e4-4cc3-be7f-bdeb2653544e/bin/utaipan-aC7eJsxGYH/data/4c71d44a2/98cdf62492134bd1896c37423e324663/FLAG713b559c7 [2021-11-03 04:50:12,045 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:50:12,052 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec21f90-23e4-4cc3-be7f-bdeb2653544e/sv-benchmarks/c/product-lines/elevator_spec13_product24.cil.c [2021-11-03 04:50:12,091 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec21f90-23e4-4cc3-be7f-bdeb2653544e/bin/utaipan-aC7eJsxGYH/data/4c71d44a2/98cdf62492134bd1896c37423e324663/FLAG713b559c7 [2021-11-03 04:50:12,231 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec21f90-23e4-4cc3-be7f-bdeb2653544e/bin/utaipan-aC7eJsxGYH/data/4c71d44a2/98cdf62492134bd1896c37423e324663 [2021-11-03 04:50:12,233 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:50:12,234 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:50:12,238 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:50:12,238 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:50:12,246 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:50:12,247 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:50:12" (1/1) ... [2021-11-03 04:50:12,249 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@278abc59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:50:12, skipping insertion in model container [2021-11-03 04:50:12,249 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:50:12" (1/1) ... [2021-11-03 04:50:12,256 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:50:12,342 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:50:12,859 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_5ec21f90-23e4-4cc3-be7f-bdeb2653544e/sv-benchmarks/c/product-lines/elevator_spec13_product24.cil.c[51490,51503] [2021-11-03 04:50:12,893 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:50:12,905 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-03 04:50:12,906 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@720f7789 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:50:12, skipping insertion in model container [2021-11-03 04:50:12,906 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:50:12,906 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-03 04:50:12,908 INFO L168 Benchmark]: Toolchain (without parser) took 672.77 ms. Allocated memory is still 115.3 MB. Free memory was 83.9 MB in the beginning and 75.3 MB in the end (delta: 8.6 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-11-03 04:50:12,909 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 115.3 MB. Free memory is still 68.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:50:12,910 INFO L168 Benchmark]: CACSL2BoogieTranslator took 668.42 ms. Allocated memory is still 115.3 MB. Free memory was 83.6 MB in the beginning and 75.7 MB in the end (delta: 7.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-11-03 04:50:12,912 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 115.3 MB. Free memory is still 68.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 668.42 ms. Allocated memory is still 115.3 MB. Free memory was 83.6 MB in the beginning and 75.7 MB in the end (delta: 7.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 77]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec21f90-23e4-4cc3-be7f-bdeb2653544e/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec21f90-23e4-4cc3-be7f-bdeb2653544e/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec21f90-23e4-4cc3-be7f-bdeb2653544e/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec21f90-23e4-4cc3-be7f-bdeb2653544e/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec13_product24.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec21f90-23e4-4cc3-be7f-bdeb2653544e/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec21f90-23e4-4cc3-be7f-bdeb2653544e/bin/utaipan-aC7eJsxGYH --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 89950477a2818e2be847e3014c0e2f9e906834037b4e328723302699ed4d9564 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:50:15,175 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:50:15,179 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:50:15,213 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:50:15,213 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:50:15,223 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:50:15,226 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:50:15,236 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:50:15,239 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:50:15,247 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:50:15,248 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:50:15,249 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:50:15,254 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:50:15,255 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:50:15,256 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:50:15,258 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:50:15,259 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:50:15,260 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:50:15,264 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:50:15,272 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:50:15,274 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:50:15,276 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:50:15,279 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:50:15,282 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:50:15,292 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:50:15,292 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:50:15,293 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:50:15,295 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:50:15,295 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:50:15,296 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:50:15,297 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:50:15,298 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:50:15,300 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:50:15,301 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:50:15,303 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:50:15,303 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:50:15,304 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:50:15,304 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:50:15,305 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:50:15,307 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:50:15,307 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:50:15,308 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec21f90-23e4-4cc3-be7f-bdeb2653544e/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-03 04:50:15,357 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:50:15,357 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:50:15,359 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:50:15,359 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:50:15,359 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:50:15,359 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:50:15,360 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:50:15,360 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:50:15,360 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:50:15,361 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:50:15,362 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:50:15,363 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:50:15,363 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:50:15,363 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:50:15,363 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:50:15,364 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:50:15,364 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:50:15,364 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 04:50:15,364 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 04:50:15,364 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:50:15,364 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:50:15,365 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:50:15,365 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:50:15,365 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:50:15,365 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 04:50:15,365 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:50:15,366 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:50:15,366 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:50:15,366 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:50:15,366 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:50:15,367 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 04:50:15,367 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 04:50:15,367 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:50:15,367 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:50:15,368 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:50:15,368 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_5ec21f90-23e4-4cc3-be7f-bdeb2653544e/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec21f90-23e4-4cc3-be7f-bdeb2653544e/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 89950477a2818e2be847e3014c0e2f9e906834037b4e328723302699ed4d9564 [2021-11-03 04:50:15,746 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:50:15,781 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:50:15,784 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:50:15,786 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:50:15,786 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:50:15,789 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec21f90-23e4-4cc3-be7f-bdeb2653544e/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/product-lines/elevator_spec13_product24.cil.c [2021-11-03 04:50:15,861 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec21f90-23e4-4cc3-be7f-bdeb2653544e/bin/utaipan-aC7eJsxGYH/data/14cbc9185/1b3ef6113f9b4cf8861b992b08b7d087/FLAG88b9225ec [2021-11-03 04:50:16,634 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:50:16,635 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec21f90-23e4-4cc3-be7f-bdeb2653544e/sv-benchmarks/c/product-lines/elevator_spec13_product24.cil.c [2021-11-03 04:50:16,661 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec21f90-23e4-4cc3-be7f-bdeb2653544e/bin/utaipan-aC7eJsxGYH/data/14cbc9185/1b3ef6113f9b4cf8861b992b08b7d087/FLAG88b9225ec [2021-11-03 04:50:16,768 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec21f90-23e4-4cc3-be7f-bdeb2653544e/bin/utaipan-aC7eJsxGYH/data/14cbc9185/1b3ef6113f9b4cf8861b992b08b7d087 [2021-11-03 04:50:16,770 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:50:16,772 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:50:16,774 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:50:16,774 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:50:16,795 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:50:16,796 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:50:16" (1/1) ... [2021-11-03 04:50:16,797 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d721f90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:50:16, skipping insertion in model container [2021-11-03 04:50:16,797 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:50:16" (1/1) ... [2021-11-03 04:50:16,805 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:50:16,880 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:50:17,391 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_5ec21f90-23e4-4cc3-be7f-bdeb2653544e/sv-benchmarks/c/product-lines/elevator_spec13_product24.cil.c[51490,51503] [2021-11-03 04:50:17,460 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:50:17,485 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 04:50:17,516 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:50:17,684 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_5ec21f90-23e4-4cc3-be7f-bdeb2653544e/sv-benchmarks/c/product-lines/elevator_spec13_product24.cil.c[51490,51503] [2021-11-03 04:50:17,728 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:50:17,743 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:50:17,864 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_5ec21f90-23e4-4cc3-be7f-bdeb2653544e/sv-benchmarks/c/product-lines/elevator_spec13_product24.cil.c[51490,51503] [2021-11-03 04:50:17,884 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:50:17,918 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:50:17,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:50:17 WrapperNode [2021-11-03 04:50:17,919 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:50:17,920 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:50:17,921 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:50:17,921 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:50:17,928 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:50:17" (1/1) ... [2021-11-03 04:50:18,002 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:50:17" (1/1) ... [2021-11-03 04:50:19,070 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:50:19,072 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:50:19,072 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:50:19,072 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:50:19,082 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:50:17" (1/1) ... [2021-11-03 04:50:19,082 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:50:17" (1/1) ... [2021-11-03 04:50:19,348 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:50:17" (1/1) ... [2021-11-03 04:50:19,362 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:50:17" (1/1) ... [2021-11-03 04:50:19,937 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:50:17" (1/1) ... [2021-11-03 04:50:20,456 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:50:17" (1/1) ... [2021-11-03 04:50:20,506 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:50:17" (1/1) ... [2021-11-03 04:50:20,859 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:50:20,862 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:50:20,864 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:50:20,864 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:50:20,865 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:50:17" (1/1) ... [2021-11-03 04:50:20,873 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:50:20,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec21f90-23e4-4cc3-be7f-bdeb2653544e/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:50:20,907 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec21f90-23e4-4cc3-be7f-bdeb2653544e/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:50:20,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec21f90-23e4-4cc3-be7f-bdeb2653544e/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:50:21,061 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 04:50:21,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 04:50:21,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:50:21,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:50:56,644 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:50:56,645 INFO L299 CfgBuilder]: Removed 3931 assume(true) statements. [2021-11-03 04:50:56,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:50:56 BoogieIcfgContainer [2021-11-03 04:50:56,664 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:50:56,666 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:50:56,667 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:50:56,670 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:50:56,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:50:16" (1/3) ... [2021-11-03 04:50:56,671 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12284342 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:50:56, skipping insertion in model container [2021-11-03 04:50:56,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:50:17" (2/3) ... [2021-11-03 04:50:56,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12284342 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:50:56, skipping insertion in model container [2021-11-03 04:50:56,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:50:56" (3/3) ... [2021-11-03 04:50:56,673 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product24.cil.c [2021-11-03 04:50:56,679 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:50:56,680 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-03 04:50:56,788 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:50:56,794 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 04:50:56,795 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-11-03 04:50:57,082 INFO L276 IsEmpty]: Start isEmpty. Operand has 17686 states, 17675 states have (on average 1.8913154172560114) internal successors, (33429), 17685 states have internal predecessors, (33429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:50:57,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-03 04:50:57,102 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:50:57,103 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:50:57,103 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:50:57,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:50:57,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1503120771, now seen corresponding path program 1 times [2021-11-03 04:50:57,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:50:57,125 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [408350507] [2021-11-03 04:50:57,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:50:57,126 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:50:57,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec21f90-23e4-4cc3-be7f-bdeb2653544e/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:50:57,129 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec21f90-23e4-4cc3-be7f-bdeb2653544e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:50:57,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec21f90-23e4-4cc3-be7f-bdeb2653544e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 04:50:57,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:50:57,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:50:57,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:50:57,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:50:57,885 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:50:58,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:50:58,050 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:50:58,050 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [408350507] [2021-11-03 04:50:58,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [408350507] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:50:58,051 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:50:58,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:50:58,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689434461] [2021-11-03 04:50:58,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:50:58,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:50:58,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:50:58,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:50:58,125 INFO L87 Difference]: Start difference. First operand has 17686 states, 17675 states have (on average 1.8913154172560114) internal successors, (33429), 17685 states have internal predecessors, (33429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:51:00,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:51:00,505 INFO L93 Difference]: Finished difference Result 60067 states and 113535 transitions. [2021-11-03 04:51:00,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:51:00,507 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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 41 [2021-11-03 04:51:00,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:51:00,799 INFO L225 Difference]: With dead ends: 60067 [2021-11-03 04:51:00,800 INFO L226 Difference]: Without dead ends: 42377 [2021-11-03 04:51:00,842 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:51:00,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42377 states. [2021-11-03 04:51:01,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42377 to 17678. [2021-11-03 04:51:01,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17678 states, 17668 states have (on average 1.883574824541544) internal successors, (33279), 17677 states have internal predecessors, (33279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:51:01,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17678 states to 17678 states and 33279 transitions. [2021-11-03 04:51:01,946 INFO L78 Accepts]: Start accepts. Automaton has 17678 states and 33279 transitions. Word has length 41 [2021-11-03 04:51:01,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:51:01,947 INFO L470 AbstractCegarLoop]: Abstraction has 17678 states and 33279 transitions. [2021-11-03 04:51:01,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:51:01,949 INFO L276 IsEmpty]: Start isEmpty. Operand 17678 states and 33279 transitions. [2021-11-03 04:51:01,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-03 04:51:01,954 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:51:01,954 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:51:01,975 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec21f90-23e4-4cc3-be7f-bdeb2653544e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 04:51:02,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec21f90-23e4-4cc3-be7f-bdeb2653544e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:51:02,170 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:51:02,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:51:02,171 INFO L85 PathProgramCache]: Analyzing trace with hash -502819147, now seen corresponding path program 1 times [2021-11-03 04:51:02,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:51:02,172 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [801474774] [2021-11-03 04:51:02,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:51:02,172 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:51:02,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec21f90-23e4-4cc3-be7f-bdeb2653544e/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:51:02,174 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec21f90-23e4-4cc3-be7f-bdeb2653544e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:51:02,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec21f90-23e4-4cc3-be7f-bdeb2653544e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 04:51:02,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:51:02,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 04:51:02,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:51:02,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:51:02,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:51:02,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:51:02,815 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:51:02,815 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [801474774] [2021-11-03 04:51:02,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [801474774] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:51:02,816 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:51:02,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 04:51:02,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603017612] [2021-11-03 04:51:02,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:51:02,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:51:02,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:51:02,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:51:02,822 INFO L87 Difference]: Start difference. First operand 17678 states and 33279 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:51:08,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:51:08,163 INFO L93 Difference]: Finished difference Result 123127 states and 231784 transitions. [2021-11-03 04:51:08,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-03 04:51:08,164 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 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 43 [2021-11-03 04:51:08,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:51:08,633 INFO L225 Difference]: With dead ends: 123127 [2021-11-03 04:51:08,633 INFO L226 Difference]: Without dead ends: 105468 [2021-11-03 04:51:08,709 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-11-03 04:51:08,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105468 states. [2021-11-03 04:51:10,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105468 to 17667. [2021-11-03 04:51:10,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17667 states, 17657 states have (on average 1.8824828679843688) internal successors, (33239), 17666 states have internal predecessors, (33239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:51:10,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17667 states to 17667 states and 33239 transitions. [2021-11-03 04:51:10,351 INFO L78 Accepts]: Start accepts. Automaton has 17667 states and 33239 transitions. Word has length 43 [2021-11-03 04:51:10,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:51:10,352 INFO L470 AbstractCegarLoop]: Abstraction has 17667 states and 33239 transitions. [2021-11-03 04:51:10,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:51:10,352 INFO L276 IsEmpty]: Start isEmpty. Operand 17667 states and 33239 transitions. [2021-11-03 04:51:10,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-03 04:51:10,355 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:51:10,356 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:51:10,378 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec21f90-23e4-4cc3-be7f-bdeb2653544e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 04:51:10,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec21f90-23e4-4cc3-be7f-bdeb2653544e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:51:10,571 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:51:10,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:51:10,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1780723404, now seen corresponding path program 1 times [2021-11-03 04:51:10,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:51:10,573 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1563017160] [2021-11-03 04:51:10,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:51:10,574 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:51:10,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec21f90-23e4-4cc3-be7f-bdeb2653544e/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:51:10,575 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec21f90-23e4-4cc3-be7f-bdeb2653544e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:51:10,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec21f90-23e4-4cc3-be7f-bdeb2653544e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 04:51:10,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:51:10,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:51:10,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:51:11,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:51:11,093 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:51:11,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:51:11,237 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:51:11,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1563017160] [2021-11-03 04:51:11,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1563017160] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:51:11,238 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:51:11,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:51:11,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241163750] [2021-11-03 04:51:11,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:51:11,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:51:11,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:51:11,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:51:11,240 INFO L87 Difference]: Start difference. First operand 17667 states and 33239 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 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) [2021-11-03 04:51:12,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:51:12,948 INFO L93 Difference]: Finished difference Result 59915 states and 112753 transitions. [2021-11-03 04:51:12,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:51:12,948 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 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) Word has length 48 [2021-11-03 04:51:12,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:51:13,030 INFO L225 Difference]: With dead ends: 59915 [2021-11-03 04:51:13,030 INFO L226 Difference]: Without dead ends: 42263 [2021-11-03 04:51:13,054 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:51:13,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42263 states. [2021-11-03 04:51:13,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42263 to 17663. [2021-11-03 04:51:13,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17663 states, 17653 states have (on average 1.8820597065654563) internal successors, (33224), 17662 states have internal predecessors, (33224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:51:13,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17663 states to 17663 states and 33224 transitions. [2021-11-03 04:51:13,980 INFO L78 Accepts]: Start accepts. Automaton has 17663 states and 33224 transitions. Word has length 48 [2021-11-03 04:51:13,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:51:13,980 INFO L470 AbstractCegarLoop]: Abstraction has 17663 states and 33224 transitions. [2021-11-03 04:51:13,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 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) [2021-11-03 04:51:13,982 INFO L276 IsEmpty]: Start isEmpty. Operand 17663 states and 33224 transitions. [2021-11-03 04:51:13,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-03 04:51:13,985 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:51:13,985 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:51:14,001 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec21f90-23e4-4cc3-be7f-bdeb2653544e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 04:51:14,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec21f90-23e4-4cc3-be7f-bdeb2653544e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:51:14,199 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:51:14,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:51:14,199 INFO L85 PathProgramCache]: Analyzing trace with hash -609773156, now seen corresponding path program 1 times [2021-11-03 04:51:14,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:51:14,201 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1645511520] [2021-11-03 04:51:14,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:51:14,201 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:51:14,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec21f90-23e4-4cc3-be7f-bdeb2653544e/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:51:14,202 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec21f90-23e4-4cc3-be7f-bdeb2653544e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:51:14,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec21f90-23e4-4cc3-be7f-bdeb2653544e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 04:51:14,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:51:14,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-03 04:51:14,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:51:14,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:51:14,740 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:51:14,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:51:14,906 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:51:14,906 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1645511520] [2021-11-03 04:51:14,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1645511520] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:51:14,906 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:51:14,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-03 04:51:14,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958886345] [2021-11-03 04:51:14,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 04:51:14,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:51:14,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 04:51:14,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:51:14,908 INFO L87 Difference]: Start difference. First operand 17663 states and 33224 transitions. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:51:23,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:51:23,826 INFO L93 Difference]: Finished difference Result 193411 states and 364033 transitions. [2021-11-03 04:51:23,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-03 04:51:23,827 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 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 50 [2021-11-03 04:51:23,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:51:24,224 INFO L225 Difference]: With dead ends: 193411 [2021-11-03 04:51:24,224 INFO L226 Difference]: Without dead ends: 175768 [2021-11-03 04:51:24,276 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=205, Invalid=497, Unknown=0, NotChecked=0, Total=702 [2021-11-03 04:51:24,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175768 states. [2021-11-03 04:51:26,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175768 to 17676. [2021-11-03 04:51:26,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17676 states, 17666 states have (on average 1.8811275897203668) internal successors, (33232), 17675 states have internal predecessors, (33232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:51:26,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17676 states to 17676 states and 33232 transitions. [2021-11-03 04:51:26,285 INFO L78 Accepts]: Start accepts. Automaton has 17676 states and 33232 transitions. Word has length 50 [2021-11-03 04:51:26,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:51:26,285 INFO L470 AbstractCegarLoop]: Abstraction has 17676 states and 33232 transitions. [2021-11-03 04:51:26,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:51:26,286 INFO L276 IsEmpty]: Start isEmpty. Operand 17676 states and 33232 transitions. [2021-11-03 04:51:26,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-03 04:51:26,288 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:51:26,288 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:51:26,303 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec21f90-23e4-4cc3-be7f-bdeb2653544e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 04:51:26,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec21f90-23e4-4cc3-be7f-bdeb2653544e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:51:26,503 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:51:26,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:51:26,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1430723619, now seen corresponding path program 1 times [2021-11-03 04:51:26,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:51:26,504 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1174131018] [2021-11-03 04:51:26,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:51:26,505 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:51:26,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec21f90-23e4-4cc3-be7f-bdeb2653544e/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:51:26,506 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec21f90-23e4-4cc3-be7f-bdeb2653544e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:51:26,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec21f90-23e4-4cc3-be7f-bdeb2653544e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 04:51:26,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:51:26,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 04:51:26,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:51:27,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:51:27,106 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:51:27,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:51:27,254 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:51:27,254 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1174131018] [2021-11-03 04:51:27,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1174131018] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:51:27,254 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:51:27,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 04:51:27,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149611232] [2021-11-03 04:51:27,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:51:27,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:51:27,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:51:27,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:51:27,256 INFO L87 Difference]: Start difference. First operand 17676 states and 33232 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:51:31,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:51:31,783 INFO L93 Difference]: Finished difference Result 123113 states and 231664 transitions. [2021-11-03 04:51:31,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-03 04:51:31,784 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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 54 [2021-11-03 04:51:31,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:51:31,992 INFO L225 Difference]: With dead ends: 123113 [2021-11-03 04:51:31,992 INFO L226 Difference]: Without dead ends: 105489 [2021-11-03 04:51:32,024 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-11-03 04:51:32,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105489 states. [2021-11-03 04:51:33,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105489 to 17688. [2021-11-03 04:51:33,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17688 states, 17678 states have (on average 1.88052947165969) internal successors, (33244), 17687 states have internal predecessors, (33244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:51:33,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17688 states to 17688 states and 33244 transitions. [2021-11-03 04:51:33,295 INFO L78 Accepts]: Start accepts. Automaton has 17688 states and 33244 transitions. Word has length 54 [2021-11-03 04:51:33,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:51:33,296 INFO L470 AbstractCegarLoop]: Abstraction has 17688 states and 33244 transitions. [2021-11-03 04:51:33,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:51:33,297 INFO L276 IsEmpty]: Start isEmpty. Operand 17688 states and 33244 transitions. [2021-11-03 04:51:33,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-03 04:51:33,299 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:51:33,299 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:51:33,314 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec21f90-23e4-4cc3-be7f-bdeb2653544e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 04:51:33,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec21f90-23e4-4cc3-be7f-bdeb2653544e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:51:33,514 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:51:33,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:51:33,514 INFO L85 PathProgramCache]: Analyzing trace with hash 1656931870, now seen corresponding path program 1 times [2021-11-03 04:51:33,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:51:33,515 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1029486819] [2021-11-03 04:51:33,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:51:33,516 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:51:33,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec21f90-23e4-4cc3-be7f-bdeb2653544e/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:51:33,519 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec21f90-23e4-4cc3-be7f-bdeb2653544e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:51:33,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec21f90-23e4-4cc3-be7f-bdeb2653544e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 04:51:33,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:51:33,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:51:33,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:51:34,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:51:34,015 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:51:34,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:51:34,137 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:51:34,137 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1029486819] [2021-11-03 04:51:34,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1029486819] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:51:34,137 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:51:34,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 04:51:34,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655498549] [2021-11-03 04:51:34,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:51:34,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:51:34,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:51:34,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:51:34,139 INFO L87 Difference]: Start difference. First operand 17688 states and 33244 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 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) [2021-11-03 04:51:35,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:51:35,198 INFO L93 Difference]: Finished difference Result 42354 states and 79654 transitions. [2021-11-03 04:51:35,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:51:35,199 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 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) Word has length 54 [2021-11-03 04:51:35,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:51:35,243 INFO L225 Difference]: With dead ends: 42354 [2021-11-03 04:51:35,243 INFO L226 Difference]: Without dead ends: 24694 [2021-11-03 04:51:35,262 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:51:35,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24694 states.