./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec3_product03.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa1c8f92-8c16-4c8d-a604-a940302e1e8e/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa1c8f92-8c16-4c8d-a604-a940302e1e8e/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa1c8f92-8c16-4c8d-a604-a940302e1e8e/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa1c8f92-8c16-4c8d-a604-a940302e1e8e/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product03.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa1c8f92-8c16-4c8d-a604-a940302e1e8e/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa1c8f92-8c16-4c8d-a604-a940302e1e8e/bin/utaipan-UUZaoUuFF8 --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 ec740d4c0b0b941516a7691cfe22f258e1a0e4fdd205bb4a0c04151c297a8c86 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:37:26,903 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:37:26,905 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:37:26,956 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:37:26,956 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:37:26,962 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:37:26,964 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:37:26,968 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:37:26,971 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:37:26,979 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:37:26,980 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:37:26,982 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:37:26,983 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:37:26,986 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:37:26,988 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:37:26,994 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:37:26,996 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:37:26,998 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:37:27,001 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:37:27,008 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:37:27,011 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:37:27,012 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:37:27,016 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:37:27,017 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:37:27,024 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:37:27,024 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:37:27,025 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:37:27,027 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:37:27,027 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:37:27,028 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:37:27,029 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:37:27,030 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:37:27,031 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:37:27,032 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:37:27,033 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:37:27,033 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:37:27,034 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:37:27,034 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:37:27,035 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:37:27,036 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:37:27,036 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:37:27,037 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa1c8f92-8c16-4c8d-a604-a940302e1e8e/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:37:27,064 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:37:27,064 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:37:27,065 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:37:27,065 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:37:27,066 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:37:27,066 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:37:27,066 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:37:27,066 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:37:27,067 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:37:27,067 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:37:27,067 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:37:27,067 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:37:27,068 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:37:27,068 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:37:27,068 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:37:27,069 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:37:27,069 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:37:27,069 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:37:27,070 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:37:27,070 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:37:27,070 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:37:27,070 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:37:27,070 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:37:27,071 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:37:27,071 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:37:27,071 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:37:27,071 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:37:27,072 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:37:27,072 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:37:27,072 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:37:27,072 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:37:27,073 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:37:27,073 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:37:27,073 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:37:27,073 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:37:27,074 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:37:27,074 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:37:27,074 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:37:27,074 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:37:27,074 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_fa1c8f92-8c16-4c8d-a604-a940302e1e8e/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa1c8f92-8c16-4c8d-a604-a940302e1e8e/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ec740d4c0b0b941516a7691cfe22f258e1a0e4fdd205bb4a0c04151c297a8c86 [2021-11-07 01:37:27,384 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:37:27,421 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:37:27,424 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:37:27,425 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:37:27,426 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:37:27,427 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa1c8f92-8c16-4c8d-a604-a940302e1e8e/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/product-lines/elevator_spec3_product03.cil.c [2021-11-07 01:37:27,501 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa1c8f92-8c16-4c8d-a604-a940302e1e8e/bin/utaipan-UUZaoUuFF8/data/618eac1f9/d1cb7ce7e22642e08997beb68bb50e1d/FLAG4fdd81a7e [2021-11-07 01:37:28,235 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:37:28,236 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa1c8f92-8c16-4c8d-a604-a940302e1e8e/sv-benchmarks/c/product-lines/elevator_spec3_product03.cil.c [2021-11-07 01:37:28,258 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa1c8f92-8c16-4c8d-a604-a940302e1e8e/bin/utaipan-UUZaoUuFF8/data/618eac1f9/d1cb7ce7e22642e08997beb68bb50e1d/FLAG4fdd81a7e [2021-11-07 01:37:28,427 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa1c8f92-8c16-4c8d-a604-a940302e1e8e/bin/utaipan-UUZaoUuFF8/data/618eac1f9/d1cb7ce7e22642e08997beb68bb50e1d [2021-11-07 01:37:28,429 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:37:28,431 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:37:28,438 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:37:28,446 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:37:28,449 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:37:28,450 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:37:28" (1/1) ... [2021-11-07 01:37:28,459 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72c41f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:37:28, skipping insertion in model container [2021-11-07 01:37:28,459 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:37:28" (1/1) ... [2021-11-07 01:37:28,468 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:37:28,635 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:37:29,351 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_fa1c8f92-8c16-4c8d-a604-a940302e1e8e/sv-benchmarks/c/product-lines/elevator_spec3_product03.cil.c[33356,33369] [2021-11-07 01:37:29,525 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:37:29,542 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) [2021-11-07 01:37:29,543 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3f72cded and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:37:29, skipping insertion in model container [2021-11-07 01:37:29,543 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:37:29,544 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:37:29,547 INFO L168 Benchmark]: Toolchain (without parser) took 1113.75 ms. Allocated memory is still 98.6 MB. Free memory was 53.7 MB in the beginning and 58.2 MB in the end (delta: -4.6 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. [2021-11-07 01:37:29,549 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 98.6 MB. Free memory is still 72.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:37:29,550 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1105.54 ms. Allocated memory is still 98.6 MB. Free memory was 53.5 MB in the beginning and 58.2 MB in the end (delta: -4.7 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. [2021-11-07 01:37:29,553 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 98.6 MB. Free memory is still 72.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1105.54 ms. Allocated memory is still 98.6 MB. Free memory was 53.5 MB in the beginning and 58.2 MB in the end (delta: -4.7 MB). Peak memory consumption was 5.0 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_fa1c8f92-8c16-4c8d-a604-a940302e1e8e/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa1c8f92-8c16-4c8d-a604-a940302e1e8e/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa1c8f92-8c16-4c8d-a604-a940302e1e8e/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa1c8f92-8c16-4c8d-a604-a940302e1e8e/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product03.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa1c8f92-8c16-4c8d-a604-a940302e1e8e/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa1c8f92-8c16-4c8d-a604-a940302e1e8e/bin/utaipan-UUZaoUuFF8 --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 ec740d4c0b0b941516a7691cfe22f258e1a0e4fdd205bb4a0c04151c297a8c86 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:37:31,876 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:37:31,879 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:37:31,937 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:37:31,938 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:37:31,943 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:37:31,945 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:37:31,949 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:37:31,953 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:37:31,960 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:37:31,962 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:37:31,964 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:37:31,965 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:37:31,967 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:37:31,970 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:37:31,974 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:37:31,976 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:37:31,977 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:37:31,980 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:37:31,988 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:37:31,990 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:37:31,991 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:37:31,995 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:37:31,996 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:37:32,005 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:37:32,006 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:37:32,006 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:37:32,008 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:37:32,009 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:37:32,010 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:37:32,011 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:37:32,012 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:37:32,014 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:37:32,015 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:37:32,017 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:37:32,017 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:37:32,018 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:37:32,018 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:37:32,019 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:37:32,020 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:37:32,021 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:37:32,026 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa1c8f92-8c16-4c8d-a604-a940302e1e8e/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 01:37:32,069 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:37:32,069 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:37:32,071 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:37:32,071 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:37:32,071 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:37:32,072 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:37:32,072 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:37:32,072 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:37:32,072 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:37:32,074 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:37:32,075 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:37:32,075 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:37:32,075 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:37:32,076 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:37:32,076 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:37:32,076 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:37:32,076 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:37:32,076 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:37:32,077 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:37:32,077 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:37:32,077 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:37:32,077 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:37:32,078 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:37:32,078 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:37:32,078 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:37:32,078 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:37:32,078 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:37:32,079 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:37:32,079 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:37:32,079 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:37:32,079 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:37:32,080 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:37:32,080 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:37:32,081 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:37:32,081 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:37:32,081 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_fa1c8f92-8c16-4c8d-a604-a940302e1e8e/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa1c8f92-8c16-4c8d-a604-a940302e1e8e/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ec740d4c0b0b941516a7691cfe22f258e1a0e4fdd205bb4a0c04151c297a8c86 [2021-11-07 01:37:32,468 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:37:32,490 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:37:32,492 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:37:32,494 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:37:32,494 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:37:32,495 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa1c8f92-8c16-4c8d-a604-a940302e1e8e/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/product-lines/elevator_spec3_product03.cil.c [2021-11-07 01:37:32,561 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa1c8f92-8c16-4c8d-a604-a940302e1e8e/bin/utaipan-UUZaoUuFF8/data/dca3ebe45/e73c236a751c4786a2df2b05a6ef83c5/FLAG5e47bd4cf [2021-11-07 01:37:33,346 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:37:33,346 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa1c8f92-8c16-4c8d-a604-a940302e1e8e/sv-benchmarks/c/product-lines/elevator_spec3_product03.cil.c [2021-11-07 01:37:33,371 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa1c8f92-8c16-4c8d-a604-a940302e1e8e/bin/utaipan-UUZaoUuFF8/data/dca3ebe45/e73c236a751c4786a2df2b05a6ef83c5/FLAG5e47bd4cf [2021-11-07 01:37:33,460 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa1c8f92-8c16-4c8d-a604-a940302e1e8e/bin/utaipan-UUZaoUuFF8/data/dca3ebe45/e73c236a751c4786a2df2b05a6ef83c5 [2021-11-07 01:37:33,462 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:37:33,463 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:37:33,466 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:37:33,467 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:37:33,470 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:37:33,471 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:37:33" (1/1) ... [2021-11-07 01:37:33,472 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78280765 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:37:33, skipping insertion in model container [2021-11-07 01:37:33,473 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:37:33" (1/1) ... [2021-11-07 01:37:33,481 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:37:33,574 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:37:33,967 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_fa1c8f92-8c16-4c8d-a604-a940302e1e8e/sv-benchmarks/c/product-lines/elevator_spec3_product03.cil.c[33356,33369] [2021-11-07 01:37:34,141 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:37:34,156 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:37:34,178 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:37:34,272 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_fa1c8f92-8c16-4c8d-a604-a940302e1e8e/sv-benchmarks/c/product-lines/elevator_spec3_product03.cil.c[33356,33369] [2021-11-07 01:37:34,411 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:37:34,424 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:37:34,477 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_fa1c8f92-8c16-4c8d-a604-a940302e1e8e/sv-benchmarks/c/product-lines/elevator_spec3_product03.cil.c[33356,33369] [2021-11-07 01:37:34,515 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:37:34,546 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:37:34,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:37:34 WrapperNode [2021-11-07 01:37:34,546 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:37:34,548 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:37:34,548 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:37:34,548 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:37:34,555 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:37:34" (1/1) ... [2021-11-07 01:37:34,591 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:37:34" (1/1) ... [2021-11-07 01:37:35,005 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:37:35,006 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:37:35,006 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:37:35,007 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:37:35,015 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:37:34" (1/1) ... [2021-11-07 01:37:35,016 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:37:34" (1/1) ... [2021-11-07 01:37:35,115 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:37:34" (1/1) ... [2021-11-07 01:37:35,116 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:37:34" (1/1) ... [2021-11-07 01:37:35,308 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:37:34" (1/1) ... [2021-11-07 01:37:35,423 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:37:34" (1/1) ... [2021-11-07 01:37:35,447 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:37:34" (1/1) ... [2021-11-07 01:37:35,515 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:37:35,516 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:37:35,517 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:37:35,518 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:37:35,518 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:37:34" (1/1) ... [2021-11-07 01:37:35,529 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:37:35,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa1c8f92-8c16-4c8d-a604-a940302e1e8e/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:37:35,556 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa1c8f92-8c16-4c8d-a604-a940302e1e8e/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:37:35,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa1c8f92-8c16-4c8d-a604-a940302e1e8e/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:37:35,693 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:37:35,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:37:35,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:37:35,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:37:50,517 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:37:50,517 INFO L299 CfgBuilder]: Removed 1257 assume(true) statements. [2021-11-07 01:37:50,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:37:50 BoogieIcfgContainer [2021-11-07 01:37:50,525 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:37:50,527 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:37:50,527 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:37:50,530 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:37:50,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:37:33" (1/3) ... [2021-11-07 01:37:50,531 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5375e19b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:37:50, skipping insertion in model container [2021-11-07 01:37:50,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:37:34" (2/3) ... [2021-11-07 01:37:50,532 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5375e19b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:37:50, skipping insertion in model container [2021-11-07 01:37:50,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:37:50" (3/3) ... [2021-11-07 01:37:50,534 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product03.cil.c [2021-11-07 01:37:50,539 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:37:50,540 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-07 01:37:50,618 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:37:50,624 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 [2021-11-07 01:37:50,624 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-11-07 01:37:50,730 INFO L276 IsEmpty]: Start isEmpty. Operand has 5823 states, 5812 states have (on average 1.8969373709566415) internal successors, (11025), 5822 states have internal predecessors, (11025), 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) [2021-11-07 01:37:50,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-07 01:37:50,749 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:37:50,749 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] [2021-11-07 01:37:50,750 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)] === [2021-11-07 01:37:50,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:37:50,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1560019917, now seen corresponding path program 1 times [2021-11-07 01:37:50,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:37:50,772 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1467713916] [2021-11-07 01:37:50,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:37:50,773 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:37:50,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa1c8f92-8c16-4c8d-a604-a940302e1e8e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:37:50,780 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa1c8f92-8c16-4c8d-a604-a940302e1e8e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:37:50,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa1c8f92-8c16-4c8d-a604-a940302e1e8e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:37:51,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:37:51,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:37:51,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:37:51,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:37:51,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:37:51,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:37:51,714 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:37:51,715 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1467713916] [2021-11-07 01:37:51,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1467713916] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:37:51,716 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:37:51,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:37:51,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831409634] [2021-11-07 01:37:51,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:37:51,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:37:51,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:37:51,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:37:51,769 INFO L87 Difference]: Start difference. First operand has 5823 states, 5812 states have (on average 1.8969373709566415) internal successors, (11025), 5822 states have internal predecessors, (11025), 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 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 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) [2021-11-07 01:37:54,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:37:54,322 INFO L93 Difference]: Finished difference Result 40383 states and 76456 transitions. [2021-11-07 01:37:54,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 01:37:54,324 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-11-07 01:37:54,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:37:54,558 INFO L225 Difference]: With dead ends: 40383 [2021-11-07 01:37:54,558 INFO L226 Difference]: Without dead ends: 34561 [2021-11-07 01:37:54,583 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:37:54,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34561 states. [2021-11-07 01:37:55,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34561 to 5835. [2021-11-07 01:37:55,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5835 states, 5825 states have (on average 1.8921888412017167) internal successors, (11022), 5834 states have internal predecessors, (11022), 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) [2021-11-07 01:37:55,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5835 states to 5835 states and 11022 transitions. [2021-11-07 01:37:55,251 INFO L78 Accepts]: Start accepts. Automaton has 5835 states and 11022 transitions. Word has length 47 [2021-11-07 01:37:55,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:37:55,252 INFO L470 AbstractCegarLoop]: Abstraction has 5835 states and 11022 transitions. [2021-11-07 01:37:55,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 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) [2021-11-07 01:37:55,252 INFO L276 IsEmpty]: Start isEmpty. Operand 5835 states and 11022 transitions. [2021-11-07 01:37:55,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-07 01:37:55,264 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:37:55,264 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] [2021-11-07 01:37:55,290 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa1c8f92-8c16-4c8d-a604-a940302e1e8e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:37:55,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa1c8f92-8c16-4c8d-a604-a940302e1e8e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:37:55,492 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)] === [2021-11-07 01:37:55,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:37:55,493 INFO L85 PathProgramCache]: Analyzing trace with hash -149182409, now seen corresponding path program 1 times [2021-11-07 01:37:55,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:37:55,494 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2043622809] [2021-11-07 01:37:55,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:37:55,510 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:37:55,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa1c8f92-8c16-4c8d-a604-a940302e1e8e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:37:55,512 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa1c8f92-8c16-4c8d-a604-a940302e1e8e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:37:55,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa1c8f92-8c16-4c8d-a604-a940302e1e8e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:37:55,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:37:55,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:37:55,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:37:56,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:37:56,127 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:37:56,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:37:56,301 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:37:56,301 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2043622809] [2021-11-07 01:37:56,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2043622809] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:37:56,302 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:37:56,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:37:56,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107516050] [2021-11-07 01:37:56,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:37:56,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:37:56,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:37:56,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:37:56,310 INFO L87 Difference]: Start difference. First operand 5835 states and 11022 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2021-11-07 01:37:56,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:37:56,541 INFO L93 Difference]: Finished difference Result 11582 states and 21887 transitions. [2021-11-07 01:37:56,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:37:56,542 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 49 [2021-11-07 01:37:56,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:37:56,564 INFO L225 Difference]: With dead ends: 11582 [2021-11-07 01:37:56,565 INFO L226 Difference]: Without dead ends: 5761 [2021-11-07 01:37:56,574 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:37:56,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5761 states. [2021-11-07 01:37:56,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5761 to 5761. [2021-11-07 01:37:56,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5761 states, 5751 states have (on average 1.8914971309337507) internal successors, (10878), 5760 states have internal predecessors, (10878), 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) [2021-11-07 01:37:56,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5761 states to 5761 states and 10878 transitions. [2021-11-07 01:37:56,792 INFO L78 Accepts]: Start accepts. Automaton has 5761 states and 10878 transitions. Word has length 49 [2021-11-07 01:37:56,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:37:56,793 INFO L470 AbstractCegarLoop]: Abstraction has 5761 states and 10878 transitions. [2021-11-07 01:37:56,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2021-11-07 01:37:56,793 INFO L276 IsEmpty]: Start isEmpty. Operand 5761 states and 10878 transitions. [2021-11-07 01:37:56,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-07 01:37:56,796 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:37:56,796 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] [2021-11-07 01:37:56,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa1c8f92-8c16-4c8d-a604-a940302e1e8e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:37:57,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa1c8f92-8c16-4c8d-a604-a940302e1e8e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:37:57,015 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)] === [2021-11-07 01:37:57,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:37:57,016 INFO L85 PathProgramCache]: Analyzing trace with hash -746511787, now seen corresponding path program 1 times [2021-11-07 01:37:57,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:37:57,018 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [547109657] [2021-11-07 01:37:57,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:37:57,018 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:37:57,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa1c8f92-8c16-4c8d-a604-a940302e1e8e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:37:57,020 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa1c8f92-8c16-4c8d-a604-a940302e1e8e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:37:57,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa1c8f92-8c16-4c8d-a604-a940302e1e8e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:37:57,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:37:57,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 01:37:57,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:37:57,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:37:57,890 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:37:58,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:37:58,162 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:37:58,162 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [547109657] [2021-11-07 01:37:58,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [547109657] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:37:58,163 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:37:58,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 01:37:58,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764889897] [2021-11-07 01:37:58,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:37:58,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:37:58,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:37:58,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:37:58,166 INFO L87 Difference]: Start difference. First operand 5761 states and 10878 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 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) [2021-11-07 01:37:58,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:37:58,779 INFO L93 Difference]: Finished difference Result 11496 states and 21719 transitions. [2021-11-07 01:37:58,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:37:58,779 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 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 [2021-11-07 01:37:58,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:37:58,793 INFO L225 Difference]: With dead ends: 11496 [2021-11-07 01:37:58,793 INFO L226 Difference]: Without dead ends: 5761 [2021-11-07 01:37:58,802 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:37:58,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5761 states. [2021-11-07 01:37:59,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5761 to 5761. [2021-11-07 01:37:59,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5761 states, 5751 states have (on average 1.8897583029038427) internal successors, (10868), 5760 states have internal predecessors, (10868), 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) [2021-11-07 01:37:59,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5761 states to 5761 states and 10868 transitions. [2021-11-07 01:37:59,049 INFO L78 Accepts]: Start accepts. Automaton has 5761 states and 10868 transitions. Word has length 51 [2021-11-07 01:37:59,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:37:59,049 INFO L470 AbstractCegarLoop]: Abstraction has 5761 states and 10868 transitions. [2021-11-07 01:37:59,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 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) [2021-11-07 01:37:59,051 INFO L276 IsEmpty]: Start isEmpty. Operand 5761 states and 10868 transitions. [2021-11-07 01:37:59,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-07 01:37:59,055 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:37:59,055 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, 1] [2021-11-07 01:37:59,078 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa1c8f92-8c16-4c8d-a604-a940302e1e8e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:37:59,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa1c8f92-8c16-4c8d-a604-a940302e1e8e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:37:59,270 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)] === [2021-11-07 01:37:59,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:37:59,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1083001569, now seen corresponding path program 1 times [2021-11-07 01:37:59,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:37:59,272 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1543261373] [2021-11-07 01:37:59,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:37:59,273 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:37:59,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa1c8f92-8c16-4c8d-a604-a940302e1e8e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:37:59,274 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa1c8f92-8c16-4c8d-a604-a940302e1e8e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:37:59,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa1c8f92-8c16-4c8d-a604-a940302e1e8e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:37:59,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:37:59,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:37:59,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:37:59,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:37:59,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:38:00,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:38:00,125 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:38:00,125 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1543261373] [2021-11-07 01:38:00,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1543261373] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:38:00,126 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:38:00,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 01:38:00,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348181470] [2021-11-07 01:38:00,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:38:00,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:38:00,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:38:00,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:38:00,128 INFO L87 Difference]: Start difference. First operand 5761 states and 10868 transitions. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 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) [2021-11-07 01:38:06,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:38:06,437 INFO L93 Difference]: Finished difference Result 25884 states and 48413 transitions. [2021-11-07 01:38:06,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-07 01:38:06,438 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 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 55 [2021-11-07 01:38:06,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:38:06,498 INFO L225 Difference]: With dead ends: 25884 [2021-11-07 01:38:06,498 INFO L226 Difference]: Without dead ends: 20193 [2021-11-07 01:38:06,507 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=143, Invalid=319, Unknown=0, NotChecked=0, Total=462 [2021-11-07 01:38:06,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20193 states. [2021-11-07 01:38:06,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20193 to 10105. [2021-11-07 01:38:06,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10105 states, 10095 states have (on average 1.8897473997028231) internal successors, (19077), 10104 states have internal predecessors, (19077), 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) [2021-11-07 01:38:06,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10105 states to 10105 states and 19077 transitions. [2021-11-07 01:38:06,978 INFO L78 Accepts]: Start accepts. Automaton has 10105 states and 19077 transitions. Word has length 55 [2021-11-07 01:38:06,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:38:06,980 INFO L470 AbstractCegarLoop]: Abstraction has 10105 states and 19077 transitions. [2021-11-07 01:38:06,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 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) [2021-11-07 01:38:06,980 INFO L276 IsEmpty]: Start isEmpty. Operand 10105 states and 19077 transitions. [2021-11-07 01:38:06,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-07 01:38:06,983 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:38:06,983 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, 1] [2021-11-07 01:38:07,001 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa1c8f92-8c16-4c8d-a604-a940302e1e8e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:38:07,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa1c8f92-8c16-4c8d-a604-a940302e1e8e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:38:07,202 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)] === [2021-11-07 01:38:07,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:38:07,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1785333342, now seen corresponding path program 1 times [2021-11-07 01:38:07,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:38:07,205 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [364647076] [2021-11-07 01:38:07,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:38:07,205 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:38:07,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa1c8f92-8c16-4c8d-a604-a940302e1e8e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:38:07,206 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa1c8f92-8c16-4c8d-a604-a940302e1e8e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:38:07,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa1c8f92-8c16-4c8d-a604-a940302e1e8e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:38:07,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:38:07,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:38:07,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:38:08,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:38:08,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:38:08,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:38:08,467 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:38:08,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [364647076] [2021-11-07 01:38:08,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [364647076] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:38:08,468 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:38:08,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 01:38:08,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762437630] [2021-11-07 01:38:08,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:38:08,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:38:08,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:38:08,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:38:08,470 INFO L87 Difference]: Start difference. First operand 10105 states and 19077 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 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) [2021-11-07 01:38:15,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:38:15,174 INFO L93 Difference]: Finished difference Result 83658 states and 158102 transitions. [2021-11-07 01:38:15,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 01:38:15,174 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 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 55 [2021-11-07 01:38:15,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:38:15,348 INFO L225 Difference]: With dead ends: 83658 [2021-11-07 01:38:15,349 INFO L226 Difference]: Without dead ends: 73623 [2021-11-07 01:38:15,378 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:38:15,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73623 states. [2021-11-07 01:38:17,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73623 to 18971. [2021-11-07 01:38:17,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18971 states, 18961 states have (on average 1.8887189494224987) internal successors, (35812), 18970 states have internal predecessors, (35812), 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) [2021-11-07 01:38:17,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18971 states to 18971 states and 35812 transitions. [2021-11-07 01:38:17,164 INFO L78 Accepts]: Start accepts. Automaton has 18971 states and 35812 transitions. Word has length 55 [2021-11-07 01:38:17,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:38:17,164 INFO L470 AbstractCegarLoop]: Abstraction has 18971 states and 35812 transitions. [2021-11-07 01:38:17,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 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) [2021-11-07 01:38:17,165 INFO L276 IsEmpty]: Start isEmpty. Operand 18971 states and 35812 transitions. [2021-11-07 01:38:17,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-07 01:38:17,167 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:38:17,168 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, 1, 1] [2021-11-07 01:38:17,189 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa1c8f92-8c16-4c8d-a604-a940302e1e8e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:38:17,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa1c8f92-8c16-4c8d-a604-a940302e1e8e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:38:17,385 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)] === [2021-11-07 01:38:17,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:38:17,386 INFO L85 PathProgramCache]: Analyzing trace with hash 64408998, now seen corresponding path program 1 times [2021-11-07 01:38:17,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:38:17,387 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2122036492] [2021-11-07 01:38:17,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:38:17,388 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:38:17,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa1c8f92-8c16-4c8d-a604-a940302e1e8e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:38:17,391 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa1c8f92-8c16-4c8d-a604-a940302e1e8e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:38:17,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa1c8f92-8c16-4c8d-a604-a940302e1e8e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:38:17,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:38:17,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:38:17,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:38:17,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:38:17,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:38:18,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:38:18,125 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:38:18,126 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2122036492] [2021-11-07 01:38:18,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2122036492] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:38:18,126 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:38:18,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:38:18,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956329119] [2021-11-07 01:38:18,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:38:18,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:38:18,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:38:18,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:38:18,129 INFO L87 Difference]: Start difference. First operand 18971 states and 35812 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2021-11-07 01:38:19,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:38:19,764 INFO L93 Difference]: Finished difference Result 55913 states and 105562 transitions. [2021-11-07 01:38:19,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:38:19,765 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 56 [2021-11-07 01:38:19,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:38:19,830 INFO L225 Difference]: With dead ends: 55913 [2021-11-07 01:38:19,830 INFO L226 Difference]: Without dead ends: 36974 [2021-11-07 01:38:19,860 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:38:19,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36974 states. [2021-11-07 01:38:20,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36974 to 18847. [2021-11-07 01:38:20,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18847 states, 18837 states have (on average 1.88798640972554) internal successors, (35564), 18846 states have internal predecessors, (35564), 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) [2021-11-07 01:38:20,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18847 states to 18847 states and 35564 transitions. [2021-11-07 01:38:20,912 INFO L78 Accepts]: Start accepts. Automaton has 18847 states and 35564 transitions. Word has length 56 [2021-11-07 01:38:20,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:38:20,912 INFO L470 AbstractCegarLoop]: Abstraction has 18847 states and 35564 transitions. [2021-11-07 01:38:20,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2021-11-07 01:38:20,913 INFO L276 IsEmpty]: Start isEmpty. Operand 18847 states and 35564 transitions. [2021-11-07 01:38:20,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-07 01:38:20,914 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:38:20,914 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, 1, 1] [2021-11-07 01:38:20,933 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa1c8f92-8c16-4c8d-a604-a940302e1e8e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:38:21,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa1c8f92-8c16-4c8d-a604-a940302e1e8e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:38:21,133 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:38:21,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:38:21,133 INFO L85 PathProgramCache]: Analyzing trace with hash -563675223, now seen corresponding path program 1 times [2021-11-07 01:38:21,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:38:21,134 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2030219514] [2021-11-07 01:38:21,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:38:21,134 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:38:21,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa1c8f92-8c16-4c8d-a604-a940302e1e8e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:38:21,139 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa1c8f92-8c16-4c8d-a604-a940302e1e8e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:38:21,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa1c8f92-8c16-4c8d-a604-a940302e1e8e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:38:21,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:38:21,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:38:21,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:38:22,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:38:22,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:38:22,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:38:22,318 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:38:22,318 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2030219514] [2021-11-07 01:38:22,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2030219514] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:38:22,318 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:38:22,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 01:38:22,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298988435] [2021-11-07 01:38:22,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:38:22,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:38:22,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:38:22,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:38:22,321 INFO L87 Difference]: Start difference. First operand 18847 states and 35564 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 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) [2021-11-07 01:38:35,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:38:35,778 INFO L93 Difference]: Finished difference Result 71809 states and 135045 transitions. [2021-11-07 01:38:35,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-07 01:38:35,779 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 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 56 [2021-11-07 01:38:35,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:38:35,868 INFO L225 Difference]: With dead ends: 71809 [2021-11-07 01:38:35,868 INFO L226 Difference]: Without dead ends: 52996 [2021-11-07 01:38:35,887 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2021-11-07 01:38:35,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52996 states. [2021-11-07 01:38:37,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52996 to 36477. [2021-11-07 01:38:37,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36477 states, 36467 states have (on average 1.8698823593934242) internal successors, (68189), 36476 states have internal predecessors, (68189), 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) [2021-11-07 01:38:37,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36477 states to 36477 states and 68189 transitions. [2021-11-07 01:38:37,691 INFO L78 Accepts]: Start accepts. Automaton has 36477 states and 68189 transitions. Word has length 56 [2021-11-07 01:38:37,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:38:37,692 INFO L470 AbstractCegarLoop]: Abstraction has 36477 states and 68189 transitions. [2021-11-07 01:38:37,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 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) [2021-11-07 01:38:37,692 INFO L276 IsEmpty]: Start isEmpty. Operand 36477 states and 68189 transitions. [2021-11-07 01:38:37,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-07 01:38:37,693 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:38:37,693 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, 1, 1, 1, 1, 1] [2021-11-07 01:38:37,704 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa1c8f92-8c16-4c8d-a604-a940302e1e8e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:38:37,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa1c8f92-8c16-4c8d-a604-a940302e1e8e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:38:37,895 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:38:37,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:38:37,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1611681034, now seen corresponding path program 1 times [2021-11-07 01:38:37,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:38:37,897 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [830056935] [2021-11-07 01:38:37,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:38:37,908 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:38:37,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa1c8f92-8c16-4c8d-a604-a940302e1e8e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:38:37,920 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa1c8f92-8c16-4c8d-a604-a940302e1e8e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:38:37,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa1c8f92-8c16-4c8d-a604-a940302e1e8e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 01:38:38,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:38:38,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:38:38,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:38:38,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:38:38,976 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:38:39,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:38:39,172 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:38:39,172 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [830056935] [2021-11-07 01:38:39,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [830056935] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:38:39,173 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:38:39,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:38:39,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486084265] [2021-11-07 01:38:39,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:38:39,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:38:39,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:38:39,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:38:39,175 INFO L87 Difference]: Start difference. First operand 36477 states and 68189 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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) [2021-11-07 01:38:43,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:38:43,446 INFO L93 Difference]: Finished difference Result 142542 states and 266579 transitions. [2021-11-07 01:38:43,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:38:43,446 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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 59 [2021-11-07 01:38:43,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:38:43,768 INFO L225 Difference]: With dead ends: 142542 [2021-11-07 01:38:43,768 INFO L226 Difference]: Without dead ends: 106102 [2021-11-07 01:38:43,802 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:38:43,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106102 states. [2021-11-07 01:38:45,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106102 to 36363. [2021-11-07 01:38:45,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36363 states, 36353 states have (on average 1.8639176959260584) internal successors, (67759), 36362 states have internal predecessors, (67759), 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) [2021-11-07 01:38:45,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36363 states to 36363 states and 67759 transitions. [2021-11-07 01:38:45,681 INFO L78 Accepts]: Start accepts. Automaton has 36363 states and 67759 transitions. Word has length 59 [2021-11-07 01:38:45,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:38:45,682 INFO L470 AbstractCegarLoop]: Abstraction has 36363 states and 67759 transitions. [2021-11-07 01:38:45,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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) [2021-11-07 01:38:45,682 INFO L276 IsEmpty]: Start isEmpty. Operand 36363 states and 67759 transitions. [2021-11-07 01:38:45,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-07 01:38:45,684 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:38:45,684 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, 1, 1, 1, 1, 1, 1] [2021-11-07 01:38:45,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa1c8f92-8c16-4c8d-a604-a940302e1e8e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:38:45,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa1c8f92-8c16-4c8d-a604-a940302e1e8e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:38:45,887 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:38:45,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:38:45,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1140880549, now seen corresponding path program 1 times [2021-11-07 01:38:45,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:38:45,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1390107098] [2021-11-07 01:38:45,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:38:45,889 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:38:45,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa1c8f92-8c16-4c8d-a604-a940302e1e8e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:38:45,890 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa1c8f92-8c16-4c8d-a604-a940302e1e8e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:38:45,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa1c8f92-8c16-4c8d-a604-a940302e1e8e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 01:38:46,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:38:46,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:38:46,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:38:46,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:38:46,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:38:46,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:38:46,876 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:38:46,876 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1390107098] [2021-11-07 01:38:46,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1390107098] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:38:46,877 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:38:46,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 01:38:46,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457912760] [2021-11-07 01:38:46,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:38:46,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:38:46,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:38:46,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:38:46,879 INFO L87 Difference]: Start difference. First operand 36363 states and 67759 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 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) [2021-11-07 01:39:02,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:39:02,311 INFO L93 Difference]: Finished difference Result 296524 states and 554410 transitions. [2021-11-07 01:39:02,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 01:39:02,312 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 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 60 [2021-11-07 01:39:02,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:39:03,695 INFO L225 Difference]: With dead ends: 296524 [2021-11-07 01:39:03,695 INFO L226 Difference]: Without dead ends: 260217 [2021-11-07 01:39:03,853 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:39:04,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260217 states. [2021-11-07 01:39:10,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260217 to 69639. [2021-11-07 01:39:11,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69639 states, 69629 states have (on average 1.8642232403165349) internal successors, (129804), 69638 states have internal predecessors, (129804), 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) [2021-11-07 01:39:11,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69639 states to 69639 states and 129804 transitions. [2021-11-07 01:39:11,281 INFO L78 Accepts]: Start accepts. Automaton has 69639 states and 129804 transitions. Word has length 60 [2021-11-07 01:39:11,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:39:11,281 INFO L470 AbstractCegarLoop]: Abstraction has 69639 states and 129804 transitions. [2021-11-07 01:39:11,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 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) [2021-11-07 01:39:11,286 INFO L276 IsEmpty]: Start isEmpty. Operand 69639 states and 129804 transitions. [2021-11-07 01:39:11,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-07 01:39:11,293 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:39:11,293 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:39:11,312 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa1c8f92-8c16-4c8d-a604-a940302e1e8e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 01:39:11,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa1c8f92-8c16-4c8d-a604-a940302e1e8e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:39:11,508 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:39:11,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:39:11,509 INFO L85 PathProgramCache]: Analyzing trace with hash -248805591, now seen corresponding path program 1 times [2021-11-07 01:39:11,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:39:11,509 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1545475643] [2021-11-07 01:39:11,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:39:11,510 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:39:11,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa1c8f92-8c16-4c8d-a604-a940302e1e8e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:39:11,513 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa1c8f92-8c16-4c8d-a604-a940302e1e8e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:39:11,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa1c8f92-8c16-4c8d-a604-a940302e1e8e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 01:39:12,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:39:12,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:39:12,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:39:12,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:39:12,350 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:39:12,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:39:12,559 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:39:12,559 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1545475643] [2021-11-07 01:39:12,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1545475643] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:39:12,559 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:39:12,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:39:12,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570395558] [2021-11-07 01:39:12,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:39:12,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:39:12,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:39:12,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:39:12,561 INFO L87 Difference]: Start difference. First operand 69639 states and 129804 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 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)