./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec9_product32.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_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/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_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec9_product32.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/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_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/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 6f20249a191004f50add5285446ee5ffba043f1ff9b40e0e115c641082e595e2 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:26:55,781 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:26:55,782 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:26:55,835 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:26:55,836 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:26:55,841 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:26:55,844 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:26:55,848 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:26:55,851 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:26:55,857 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:26:55,858 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:26:55,861 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:26:55,861 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:26:55,864 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:26:55,867 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:26:55,874 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:26:55,876 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:26:55,877 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:26:55,880 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:26:55,891 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:26:55,893 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:26:55,895 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:26:55,898 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:26:55,900 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:26:55,904 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:26:55,905 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:26:55,905 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:26:55,907 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:26:55,908 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:26:55,910 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:26:55,911 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:26:55,912 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:26:55,914 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:26:55,915 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:26:55,917 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:26:55,918 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:26:55,918 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:26:55,919 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:26:55,919 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:26:55,920 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:26:55,921 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:26:55,922 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:26:55,968 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:26:55,970 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:26:55,972 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:26:55,972 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:26:55,972 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:26:55,972 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:26:55,973 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:26:55,973 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:26:55,973 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:26:55,973 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:26:55,974 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:26:55,975 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:26:55,975 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:26:55,975 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:26:55,976 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:26:55,976 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:26:55,977 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:26:55,977 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:26:55,977 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:26:55,977 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:26:55,978 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:26:55,978 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:26:55,978 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:26:55,978 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:26:55,979 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:26:55,979 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:26:55,979 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:26:55,979 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:26:55,980 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:26:55,981 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:26:55,982 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:26:55,982 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:26:55,982 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:26:55,983 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:26:55,983 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:26:55,983 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:26:55,983 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:26:55,984 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:26:55,984 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:26:55,984 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_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6f20249a191004f50add5285446ee5ffba043f1ff9b40e0e115c641082e595e2 [2021-11-07 01:26:56,333 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:26:56,364 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:26:56,367 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:26:56,368 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:26:56,369 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:26:56,370 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/product-lines/elevator_spec9_product32.cil.c [2021-11-07 01:26:56,445 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/data/ebdf5c82f/a726b42774444b0eb10f902cbd29b77c/FLAG424cf2b4a [2021-11-07 01:26:57,093 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:26:57,094 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/sv-benchmarks/c/product-lines/elevator_spec9_product32.cil.c [2021-11-07 01:26:57,132 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/data/ebdf5c82f/a726b42774444b0eb10f902cbd29b77c/FLAG424cf2b4a [2021-11-07 01:26:57,290 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/data/ebdf5c82f/a726b42774444b0eb10f902cbd29b77c [2021-11-07 01:26:57,292 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:26:57,294 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:26:57,295 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:26:57,296 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:26:57,312 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:26:57,313 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:26:57" (1/1) ... [2021-11-07 01:26:57,314 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79c342e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:26:57, skipping insertion in model container [2021-11-07 01:26:57,314 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:26:57" (1/1) ... [2021-11-07 01:26:57,322 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:26:57,410 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:26:57,699 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_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/sv-benchmarks/c/product-lines/elevator_spec9_product32.cil.c[17414,17427] [2021-11-07 01:26:57,966 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:26:57,978 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 01:26:57,979 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1be22967 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:26:57, skipping insertion in model container [2021-11-07 01:26:57,979 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:26:57,979 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:26:57,982 INFO L168 Benchmark]: Toolchain (without parser) took 686.66 ms. Allocated memory was 96.5 MB in the beginning and 125.8 MB in the end (delta: 29.4 MB). Free memory was 61.2 MB in the beginning and 86.5 MB in the end (delta: -25.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-11-07 01:26:57,983 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 96.5 MB. Free memory is still 49.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:26:57,984 INFO L168 Benchmark]: CACSL2BoogieTranslator took 684.08 ms. Allocated memory was 96.5 MB in the beginning and 125.8 MB in the end (delta: 29.4 MB). Free memory was 61.0 MB in the beginning and 86.5 MB in the end (delta: -25.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-11-07 01:26:57,986 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 96.5 MB. Free memory is still 49.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 684.08 ms. Allocated memory was 96.5 MB in the beginning and 125.8 MB in the end (delta: 29.4 MB). Free memory was 61.0 MB in the beginning and 86.5 MB in the end (delta: -25.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2603]: 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_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/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_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec9_product32.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/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_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/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 6f20249a191004f50add5285446ee5ffba043f1ff9b40e0e115c641082e595e2 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:27:00,301 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:27:00,305 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:27:00,343 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:27:00,344 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:27:00,345 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:27:00,347 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:27:00,349 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:27:00,352 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:27:00,353 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:27:00,354 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:27:00,356 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:27:00,356 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:27:00,357 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:27:00,359 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:27:00,361 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:27:00,362 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:27:00,363 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:27:00,365 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:27:00,368 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:27:00,370 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:27:00,377 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:27:00,379 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:27:00,381 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:27:00,385 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:27:00,391 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:27:00,392 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:27:00,396 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:27:00,401 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:27:00,403 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:27:00,403 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:27:00,404 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:27:00,406 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:27:00,407 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:27:00,408 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:27:00,410 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:27:00,420 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:27:00,420 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:27:00,421 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:27:00,422 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:27:00,422 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:27:00,425 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 01:27:00,474 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:27:00,480 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:27:00,481 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:27:00,482 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:27:00,482 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:27:00,482 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:27:00,483 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:27:00,483 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:27:00,483 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:27:00,485 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:27:00,486 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:27:00,486 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:27:00,486 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:27:00,487 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:27:00,487 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:27:00,487 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:27:00,487 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:27:00,488 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:27:00,488 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:27:00,488 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:27:00,488 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:27:00,489 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:27:00,489 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:27:00,489 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:27:00,489 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:27:00,490 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:27:00,490 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:27:00,490 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:27:00,490 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:27:00,491 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:27:00,491 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:27:00,491 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:27:00,492 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:27:00,492 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:27:00,492 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:27:00,493 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_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6f20249a191004f50add5285446ee5ffba043f1ff9b40e0e115c641082e595e2 [2021-11-07 01:27:00,907 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:27:00,935 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:27:00,937 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:27:00,939 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:27:00,939 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:27:00,940 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/product-lines/elevator_spec9_product32.cil.c [2021-11-07 01:27:01,032 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/data/ef5bb65a8/57435aae91064e98b7c609422d33f0e3/FLAG2c5a0f6fc [2021-11-07 01:27:01,826 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:27:01,826 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/sv-benchmarks/c/product-lines/elevator_spec9_product32.cil.c [2021-11-07 01:27:01,861 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/data/ef5bb65a8/57435aae91064e98b7c609422d33f0e3/FLAG2c5a0f6fc [2021-11-07 01:27:01,958 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/data/ef5bb65a8/57435aae91064e98b7c609422d33f0e3 [2021-11-07 01:27:01,960 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:27:01,961 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:27:01,962 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:27:01,962 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:27:01,970 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:27:01,971 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:27:01" (1/1) ... [2021-11-07 01:27:01,973 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28028703 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:27:01, skipping insertion in model container [2021-11-07 01:27:01,974 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:27:01" (1/1) ... [2021-11-07 01:27:01,981 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:27:02,072 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:27:02,387 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_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/sv-benchmarks/c/product-lines/elevator_spec9_product32.cil.c[17414,17427] [2021-11-07 01:27:02,722 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:27:02,736 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:27:02,762 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:27:02,783 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_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/sv-benchmarks/c/product-lines/elevator_spec9_product32.cil.c[17414,17427] [2021-11-07 01:27:02,917 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:27:02,927 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:27:02,967 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_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/sv-benchmarks/c/product-lines/elevator_spec9_product32.cil.c[17414,17427] [2021-11-07 01:27:03,093 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:27:03,155 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:27:03,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:27:03 WrapperNode [2021-11-07 01:27:03,156 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:27:03,158 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:27:03,158 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:27:03,158 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:27:03,165 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:27:03" (1/1) ... [2021-11-07 01:27:03,245 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:27:03" (1/1) ... [2021-11-07 01:27:03,829 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:27:03,830 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:27:03,830 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:27:03,831 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:27:03,840 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:27:03" (1/1) ... [2021-11-07 01:27:03,840 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:27:03" (1/1) ... [2021-11-07 01:27:03,993 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:27:03" (1/1) ... [2021-11-07 01:27:03,993 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:27:03" (1/1) ... [2021-11-07 01:27:04,297 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:27:03" (1/1) ... [2021-11-07 01:27:04,553 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:27:03" (1/1) ... [2021-11-07 01:27:04,587 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:27:03" (1/1) ... [2021-11-07 01:27:04,704 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:27:04,722 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:27:04,724 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:27:04,725 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:27:04,726 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:27:03" (1/1) ... [2021-11-07 01:27:04,734 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:27:04,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:27:04,802 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:27:04,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:27:04,938 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:27:04,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:27:04,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:27:04,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:27:23,372 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:27:23,373 INFO L299 CfgBuilder]: Removed 1697 assume(true) statements. [2021-11-07 01:27:23,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:27:23 BoogieIcfgContainer [2021-11-07 01:27:23,383 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:27:23,385 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:27:23,386 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:27:23,389 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:27:23,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:27:01" (1/3) ... [2021-11-07 01:27:23,390 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36810507 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:27:23, skipping insertion in model container [2021-11-07 01:27:23,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:27:03" (2/3) ... [2021-11-07 01:27:23,391 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36810507 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:27:23, skipping insertion in model container [2021-11-07 01:27:23,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:27:23" (3/3) ... [2021-11-07 01:27:23,393 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec9_product32.cil.c [2021-11-07 01:27:23,398 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:27:23,399 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-07 01:27:23,482 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:27:23,489 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 01:27:23,489 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-07 01:27:23,630 INFO L276 IsEmpty]: Start isEmpty. Operand has 7188 states, 7182 states have (on average 1.8884711779448622) internal successors, (13563), 7187 states have internal predecessors, (13563), 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 01:27:23,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-07 01:27:23,641 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:27:23,641 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] [2021-11-07 01:27:23,642 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:27:23,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:27:23,648 INFO L85 PathProgramCache]: Analyzing trace with hash -983298927, now seen corresponding path program 1 times [2021-11-07 01:27:23,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:27:23,664 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [86201061] [2021-11-07 01:27:23,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:27:23,665 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:27:23,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:27:23,669 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:27:23,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:27:24,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:27:24,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 01:27:24,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:27:24,221 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 01:27:24,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:27:24,281 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 01:27:24,282 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:27:24,283 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [86201061] [2021-11-07 01:27:24,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [86201061] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:27:24,283 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:27:24,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:27:24,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574031709] [2021-11-07 01:27:24,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 01:27:24,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:27:24,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 01:27:24,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:27:24,336 INFO L87 Difference]: Start difference. First operand has 7188 states, 7182 states have (on average 1.8884711779448622) internal successors, (13563), 7187 states have internal predecessors, (13563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 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 01:27:24,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:27:24,590 INFO L93 Difference]: Finished difference Result 7207 states and 13586 transitions. [2021-11-07 01:27:24,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 01:27:24,592 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 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 26 [2021-11-07 01:27:24,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:27:24,661 INFO L225 Difference]: With dead ends: 7207 [2021-11-07 01:27:24,661 INFO L226 Difference]: Without dead ends: 7184 [2021-11-07 01:27:24,671 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:27:24,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7184 states. [2021-11-07 01:27:24,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7184 to 7184. [2021-11-07 01:27:24,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7184 states, 7179 states have (on average 1.8875888006686168) internal successors, (13551), 7183 states have internal predecessors, (13551), 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 01:27:24,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7184 states to 7184 states and 13551 transitions. [2021-11-07 01:27:24,997 INFO L78 Accepts]: Start accepts. Automaton has 7184 states and 13551 transitions. Word has length 26 [2021-11-07 01:27:24,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:27:24,997 INFO L470 AbstractCegarLoop]: Abstraction has 7184 states and 13551 transitions. [2021-11-07 01:27:24,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 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 01:27:24,998 INFO L276 IsEmpty]: Start isEmpty. Operand 7184 states and 13551 transitions. [2021-11-07 01:27:25,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-07 01:27:25,001 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:27:25,001 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] [2021-11-07 01:27:25,023 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:27:25,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:27:25,220 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:27:25,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:27:25,220 INFO L85 PathProgramCache]: Analyzing trace with hash -582640160, now seen corresponding path program 1 times [2021-11-07 01:27:25,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:27:25,221 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2124985547] [2021-11-07 01:27:25,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:27:25,222 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:27:25,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:27:25,223 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:27:25,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:27:25,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:27:25,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:27:25,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:27:25,677 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 01:27:25,678 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:27:25,785 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 01:27:25,786 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:27:25,786 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2124985547] [2021-11-07 01:27:25,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2124985547] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:27:25,786 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:27:25,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:27:25,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854961955] [2021-11-07 01:27:25,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:27:25,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:27:25,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:27:25,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:27:25,790 INFO L87 Difference]: Start difference. First operand 7184 states and 13551 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 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 01:27:26,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:27:26,397 INFO L93 Difference]: Finished difference Result 14355 states and 27083 transitions. [2021-11-07 01:27:26,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:27:26,398 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-11-07 01:27:26,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:27:26,450 INFO L225 Difference]: With dead ends: 14355 [2021-11-07 01:27:26,450 INFO L226 Difference]: Without dead ends: 7184 [2021-11-07 01:27:26,464 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 52 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 01:27:26,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7184 states. [2021-11-07 01:27:26,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7184 to 7184. [2021-11-07 01:27:26,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7184 states, 7179 states have (on average 1.8867530296698705) internal successors, (13545), 7183 states have internal predecessors, (13545), 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 01:27:26,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7184 states to 7184 states and 13545 transitions. [2021-11-07 01:27:26,792 INFO L78 Accepts]: Start accepts. Automaton has 7184 states and 13545 transitions. Word has length 28 [2021-11-07 01:27:26,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:27:26,793 INFO L470 AbstractCegarLoop]: Abstraction has 7184 states and 13545 transitions. [2021-11-07 01:27:26,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 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 01:27:26,793 INFO L276 IsEmpty]: Start isEmpty. Operand 7184 states and 13545 transitions. [2021-11-07 01:27:26,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-07 01:27:26,795 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:27:26,795 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] [2021-11-07 01:27:26,812 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-07 01:27:27,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:27:27,011 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:27:27,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:27:27,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1491748970, now seen corresponding path program 1 times [2021-11-07 01:27:27,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:27:27,014 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1760933377] [2021-11-07 01:27:27,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:27:27,014 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:27:27,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:27:27,016 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:27:27,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:27:27,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:27:27,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:27:27,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:27:27,539 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 01:27:27,540 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:27:27,678 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 01:27:27,679 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:27:27,679 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1760933377] [2021-11-07 01:27:27,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1760933377] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:27:27,680 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:27:27,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:27:27,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877102675] [2021-11-07 01:27:27,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:27:27,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:27:27,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:27:27,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:27:27,682 INFO L87 Difference]: Start difference. First operand 7184 states and 13545 transitions. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 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 01:27:28,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:27:28,408 INFO L93 Difference]: Finished difference Result 14319 states and 27006 transitions. [2021-11-07 01:27:28,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:27:28,409 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-07 01:27:28,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:27:28,486 INFO L225 Difference]: With dead ends: 14319 [2021-11-07 01:27:28,486 INFO L226 Difference]: Without dead ends: 7157 [2021-11-07 01:27:28,498 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:27:28,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7157 states. [2021-11-07 01:27:28,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7157 to 7157. [2021-11-07 01:27:28,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7157 states, 7152 states have (on average 1.886045861297539) internal successors, (13489), 7156 states have internal predecessors, (13489), 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 01:27:28,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7157 states to 7157 states and 13489 transitions. [2021-11-07 01:27:28,916 INFO L78 Accepts]: Start accepts. Automaton has 7157 states and 13489 transitions. Word has length 33 [2021-11-07 01:27:28,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:27:28,917 INFO L470 AbstractCegarLoop]: Abstraction has 7157 states and 13489 transitions. [2021-11-07 01:27:28,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 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 01:27:28,920 INFO L276 IsEmpty]: Start isEmpty. Operand 7157 states and 13489 transitions. [2021-11-07 01:27:28,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-07 01:27:28,921 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:27:28,922 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] [2021-11-07 01:27:28,942 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:27:29,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:27:29,142 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:27:29,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:27:29,143 INFO L85 PathProgramCache]: Analyzing trace with hash 2079513228, now seen corresponding path program 1 times [2021-11-07 01:27:29,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:27:29,144 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [840381508] [2021-11-07 01:27:29,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:27:29,144 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:27:29,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:27:29,149 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:27:29,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:27:29,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:27:29,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:27:29,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:27:29,701 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 01:27:29,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:27:29,838 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 01:27:29,839 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:27:29,840 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [840381508] [2021-11-07 01:27:29,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [840381508] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:27:29,841 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:27:29,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:27:29,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817808930] [2021-11-07 01:27:29,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:27:29,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:27:29,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:27:29,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:27:29,844 INFO L87 Difference]: Start difference. First operand 7157 states and 13489 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:27:30,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:27:30,346 INFO L93 Difference]: Finished difference Result 14292 states and 26950 transitions. [2021-11-07 01:27:30,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:27:30,347 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-11-07 01:27:30,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:27:30,375 INFO L225 Difference]: With dead ends: 14292 [2021-11-07 01:27:30,375 INFO L226 Difference]: Without dead ends: 7157 [2021-11-07 01:27:30,389 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 64 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 01:27:30,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7157 states. [2021-11-07 01:27:30,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7157 to 7157. [2021-11-07 01:27:30,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7157 states, 7152 states have (on average 1.8852069351230425) internal successors, (13483), 7156 states have internal predecessors, (13483), 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 01:27:30,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7157 states to 7157 states and 13483 transitions. [2021-11-07 01:27:30,856 INFO L78 Accepts]: Start accepts. Automaton has 7157 states and 13483 transitions. Word has length 34 [2021-11-07 01:27:30,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:27:30,857 INFO L470 AbstractCegarLoop]: Abstraction has 7157 states and 13483 transitions. [2021-11-07 01:27:30,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:27:30,858 INFO L276 IsEmpty]: Start isEmpty. Operand 7157 states and 13483 transitions. [2021-11-07 01:27:30,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-07 01:27:30,862 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:27:30,862 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] [2021-11-07 01:27:30,882 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-11-07 01:27:31,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:27:31,078 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:27:31,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:27:31,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1113049123, now seen corresponding path program 1 times [2021-11-07 01:27:31,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:27:31,080 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1455035803] [2021-11-07 01:27:31,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:27:31,081 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:27:31,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:27:31,082 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:27:31,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:27:31,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:27:31,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 01:27:31,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:27:31,717 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 01:27:31,717 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:27:31,898 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 01:27:31,899 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:27:31,899 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1455035803] [2021-11-07 01:27:31,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1455035803] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:27:31,899 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:27:31,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 01:27:31,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443892874] [2021-11-07 01:27:31,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:27:31,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:27:31,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:27:31,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:27:31,901 INFO L87 Difference]: Start difference. First operand 7157 states and 13483 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:27:32,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:27:32,469 INFO L93 Difference]: Finished difference Result 14286 states and 26933 transitions. [2021-11-07 01:27:32,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:27:32,470 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-11-07 01:27:32,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:27:32,495 INFO L225 Difference]: With dead ends: 14286 [2021-11-07 01:27:32,495 INFO L226 Difference]: Without dead ends: 7154 [2021-11-07 01:27:32,509 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:27:32,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7154 states. [2021-11-07 01:27:32,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7154 to 7154. [2021-11-07 01:27:32,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7154 states, 7149 states have (on average 1.8848790040565113) internal successors, (13475), 7153 states have internal predecessors, (13475), 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 01:27:32,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7154 states to 7154 states and 13475 transitions. [2021-11-07 01:27:32,839 INFO L78 Accepts]: Start accepts. Automaton has 7154 states and 13475 transitions. Word has length 39 [2021-11-07 01:27:32,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:27:32,840 INFO L470 AbstractCegarLoop]: Abstraction has 7154 states and 13475 transitions. [2021-11-07 01:27:32,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:27:32,841 INFO L276 IsEmpty]: Start isEmpty. Operand 7154 states and 13475 transitions. [2021-11-07 01:27:32,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-07 01:27:32,842 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:27:32,842 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] [2021-11-07 01:27:32,860 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-07 01:27:33,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:27:33,057 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:27:33,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:27:33,058 INFO L85 PathProgramCache]: Analyzing trace with hash -888016467, now seen corresponding path program 1 times [2021-11-07 01:27:33,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:27:33,059 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1862574086] [2021-11-07 01:27:33,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:27:33,059 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:27:33,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:27:33,063 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:27:33,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:27:33,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:27:33,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:27:33,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:27:33,854 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 01:27:33,855 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:27:34,066 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 01:27:34,066 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:27:34,066 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1862574086] [2021-11-07 01:27:34,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1862574086] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:27:34,067 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:27:34,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-07 01:27:34,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125434947] [2021-11-07 01:27:34,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:27:34,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:27:34,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:27:34,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:27:34,069 INFO L87 Difference]: Start difference. First operand 7154 states and 13475 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 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 01:27:35,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:27:35,886 INFO L93 Difference]: Finished difference Result 18488 states and 34897 transitions. [2021-11-07 01:27:35,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:27:35,891 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 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 40 [2021-11-07 01:27:35,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:27:35,939 INFO L225 Difference]: With dead ends: 18488 [2021-11-07 01:27:35,940 INFO L226 Difference]: Without dead ends: 14869 [2021-11-07 01:27:35,948 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 76 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 01:27:35,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14869 states. [2021-11-07 01:27:36,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14869 to 9296. [2021-11-07 01:27:36,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9296 states, 9291 states have (on average 1.8865568830050587) internal successors, (17528), 9295 states have internal predecessors, (17528), 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 01:27:36,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9296 states to 9296 states and 17528 transitions. [2021-11-07 01:27:36,461 INFO L78 Accepts]: Start accepts. Automaton has 9296 states and 17528 transitions. Word has length 40 [2021-11-07 01:27:36,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:27:36,462 INFO L470 AbstractCegarLoop]: Abstraction has 9296 states and 17528 transitions. [2021-11-07 01:27:36,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 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 01:27:36,463 INFO L276 IsEmpty]: Start isEmpty. Operand 9296 states and 17528 transitions. [2021-11-07 01:27:36,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-07 01:27:36,470 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:27:36,470 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 01:27:36,498 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:27:36,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:27:36,699 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:27:36,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:27:36,700 INFO L85 PathProgramCache]: Analyzing trace with hash -608244677, now seen corresponding path program 1 times [2021-11-07 01:27:36,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:27:36,701 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [309166173] [2021-11-07 01:27:36,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:27:36,702 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:27:36,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:27:36,712 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:27:36,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:27:37,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:27:37,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:27:37,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:27:37,526 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 01:27:37,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:27:37,793 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 01:27:37,793 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:27:37,794 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [309166173] [2021-11-07 01:27:37,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [309166173] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:27:37,794 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:27:37,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-07 01:27:37,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637892430] [2021-11-07 01:27:37,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:27:37,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:27:37,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:27:37,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:27:37,796 INFO L87 Difference]: Start difference. First operand 9296 states and 17528 transitions. Second operand has 8 states, 8 states have (on average 10.875) internal successors, (87), 7 states have internal predecessors, (87), 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 01:27:38,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:27:38,935 INFO L93 Difference]: Finished difference Result 17350 states and 32526 transitions. [2021-11-07 01:27:38,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 01:27:38,936 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 7 states have internal predecessors, (87), 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 01:27:38,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:27:38,966 INFO L225 Difference]: With dead ends: 17350 [2021-11-07 01:27:38,966 INFO L226 Difference]: Without dead ends: 9317 [2021-11-07 01:27:38,978 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-11-07 01:27:38,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9317 states. [2021-11-07 01:27:39,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9317 to 6531. [2021-11-07 01:27:39,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6531 states, 6526 states have (on average 1.8813974869751762) internal successors, (12278), 6530 states have internal predecessors, (12278), 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 01:27:39,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6531 states to 6531 states and 12278 transitions. [2021-11-07 01:27:39,426 INFO L78 Accepts]: Start accepts. Automaton has 6531 states and 12278 transitions. Word has length 59 [2021-11-07 01:27:39,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:27:39,427 INFO L470 AbstractCegarLoop]: Abstraction has 6531 states and 12278 transitions. [2021-11-07 01:27:39,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 7 states have internal predecessors, (87), 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 01:27:39,428 INFO L276 IsEmpty]: Start isEmpty. Operand 6531 states and 12278 transitions. [2021-11-07 01:27:39,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-07 01:27:39,432 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:27:39,432 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 01:27:39,456 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:27:39,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:27:39,647 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:27:39,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:27:39,647 INFO L85 PathProgramCache]: Analyzing trace with hash 2125982373, now seen corresponding path program 1 times [2021-11-07 01:27:39,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:27:39,649 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1536247090] [2021-11-07 01:27:39,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:27:39,650 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:27:39,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:27:39,660 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:27:39,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 01:27:40,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:27:40,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:27:40,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:27:40,492 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 01:27:40,492 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:27:40,726 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 01:27:40,726 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:27:40,727 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1536247090] [2021-11-07 01:27:40,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1536247090] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:27:40,727 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:27:40,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-07 01:27:40,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237403677] [2021-11-07 01:27:40,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:27:40,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:27:40,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:27:40,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:27:40,731 INFO L87 Difference]: Start difference. First operand 6531 states and 12278 transitions. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 5 states have internal predecessors, (90), 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 01:27:46,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:27:46,235 INFO L93 Difference]: Finished difference Result 22897 states and 43080 transitions. [2021-11-07 01:27:46,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:27:46,235 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 5 states have internal predecessors, (90), 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 01:27:46,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:27:46,294 INFO L225 Difference]: With dead ends: 22897 [2021-11-07 01:27:46,294 INFO L226 Difference]: Without dead ends: 16400 [2021-11-07 01:27:46,309 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:27:46,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16400 states. [2021-11-07 01:27:46,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16400 to 6531. [2021-11-07 01:27:46,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6531 states, 6526 states have (on average 1.825927060986822) internal successors, (11916), 6530 states have internal predecessors, (11916), 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 01:27:46,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6531 states to 6531 states and 11916 transitions. [2021-11-07 01:27:46,757 INFO L78 Accepts]: Start accepts. Automaton has 6531 states and 11916 transitions. Word has length 60 [2021-11-07 01:27:46,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:27:46,758 INFO L470 AbstractCegarLoop]: Abstraction has 6531 states and 11916 transitions. [2021-11-07 01:27:46,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 5 states have internal predecessors, (90), 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 01:27:46,759 INFO L276 IsEmpty]: Start isEmpty. Operand 6531 states and 11916 transitions. [2021-11-07 01:27:46,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-07 01:27:46,762 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:27:46,763 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, 1, 1, 1] [2021-11-07 01:27:46,783 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:27:46,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:27:46,976 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:27:46,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:27:46,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1379453895, now seen corresponding path program 1 times [2021-11-07 01:27:46,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:27:46,978 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1827677427] [2021-11-07 01:27:46,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:27:46,978 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:27:46,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:27:46,979 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:27:46,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 01:27:47,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:27:47,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:27:47,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:27:47,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:27:47,788 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:27:48,053 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 01:27:48,054 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:27:48,054 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1827677427] [2021-11-07 01:27:48,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1827677427] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:27:48,054 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:27:48,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 01:27:48,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114390359] [2021-11-07 01:27:48,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:27:48,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:27:48,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:27:48,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:27:48,056 INFO L87 Difference]: Start difference. First operand 6531 states and 11916 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 5 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) [2021-11-07 01:27:51,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:27:51,148 INFO L93 Difference]: Finished difference Result 17909 states and 32966 transitions. [2021-11-07 01:27:51,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 01:27:51,149 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 5 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) Word has length 68 [2021-11-07 01:27:51,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:27:51,183 INFO L225 Difference]: With dead ends: 17909 [2021-11-07 01:27:51,183 INFO L226 Difference]: Without dead ends: 11439 [2021-11-07 01:27:51,195 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-11-07 01:27:51,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11439 states. [2021-11-07 01:27:51,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11439 to 6427. [2021-11-07 01:27:51,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6427 states, 6422 states have (on average 1.8268452195577702) internal successors, (11732), 6426 states have internal predecessors, (11732), 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 01:27:51,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6427 states to 6427 states and 11732 transitions. [2021-11-07 01:27:51,633 INFO L78 Accepts]: Start accepts. Automaton has 6427 states and 11732 transitions. Word has length 68 [2021-11-07 01:27:51,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:27:51,633 INFO L470 AbstractCegarLoop]: Abstraction has 6427 states and 11732 transitions. [2021-11-07 01:27:51,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 5 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) [2021-11-07 01:27:51,634 INFO L276 IsEmpty]: Start isEmpty. Operand 6427 states and 11732 transitions. [2021-11-07 01:27:51,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-07 01:27:51,637 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:27:51,638 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, 1, 1, 1, 1, 1, 1] [2021-11-07 01:27:51,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 01:27:51,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:27:51,852 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:27:51,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:27:51,853 INFO L85 PathProgramCache]: Analyzing trace with hash 862258006, now seen corresponding path program 1 times [2021-11-07 01:27:51,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:27:51,853 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1121216238] [2021-11-07 01:27:51,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:27:51,854 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:27:51,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:27:51,855 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:27:51,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 01:27:52,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:27:52,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:27:52,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:27:52,800 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 01:27:52,800 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:27:54,475 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 01:27:54,475 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:27:54,476 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1121216238] [2021-11-07 01:27:54,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1121216238] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:27:54,476 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:27:54,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-07 01:27:54,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046385326] [2021-11-07 01:27:54,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:27:54,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:27:54,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:27:54,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:27:54,479 INFO L87 Difference]: Start difference. First operand 6427 states and 11732 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 5 states have internal predecessors, (109), 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 01:27:58,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:27:58,181 INFO L93 Difference]: Finished difference Result 20310 states and 37083 transitions. [2021-11-07 01:27:58,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:27:58,187 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 5 states have internal predecessors, (109), 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 71 [2021-11-07 01:27:58,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:27:58,218 INFO L225 Difference]: With dead ends: 20310 [2021-11-07 01:27:58,218 INFO L226 Difference]: Without dead ends: 13936 [2021-11-07 01:27:58,229 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:27:58,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13936 states. [2021-11-07 01:27:58,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13936 to 8874. [2021-11-07 01:27:58,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8874 states, 8869 states have (on average 1.8138459803811027) internal successors, (16087), 8873 states have internal predecessors, (16087), 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 01:27:58,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8874 states to 8874 states and 16087 transitions. [2021-11-07 01:27:58,864 INFO L78 Accepts]: Start accepts. Automaton has 8874 states and 16087 transitions. Word has length 71 [2021-11-07 01:27:58,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:27:58,864 INFO L470 AbstractCegarLoop]: Abstraction has 8874 states and 16087 transitions. [2021-11-07 01:27:58,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 5 states have internal predecessors, (109), 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 01:27:58,865 INFO L276 IsEmpty]: Start isEmpty. Operand 8874 states and 16087 transitions. [2021-11-07 01:27:58,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-07 01:27:58,868 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:27:58,869 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:27:58,894 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 01:27:59,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:27:59,088 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:27:59,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:27:59,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1113679123, now seen corresponding path program 1 times [2021-11-07 01:27:59,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:27:59,089 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [441413136] [2021-11-07 01:27:59,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:27:59,090 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:27:59,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:27:59,090 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:27:59,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 01:27:59,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:27:59,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:27:59,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:27:59,916 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 01:27:59,916 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:28:00,147 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 01:28:00,147 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:28:00,147 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [441413136] [2021-11-07 01:28:00,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [441413136] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:28:00,147 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:28:00,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:28:00,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248933423] [2021-11-07 01:28:00,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:28:00,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:28:00,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:28:00,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:28:00,150 INFO L87 Difference]: Start difference. First operand 8874 states and 16087 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 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 01:28:06,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:28:06,704 INFO L93 Difference]: Finished difference Result 35220 states and 64283 transitions. [2021-11-07 01:28:06,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:28:06,704 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 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 72 [2021-11-07 01:28:06,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:28:06,756 INFO L225 Difference]: With dead ends: 35220 [2021-11-07 01:28:06,756 INFO L226 Difference]: Without dead ends: 26398 [2021-11-07 01:28:06,769 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:28:06,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26398 states. [2021-11-07 01:28:07,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26398 to 8888. [2021-11-07 01:28:07,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8888 states, 8883 states have (on average 1.8125633232016212) internal successors, (16101), 8887 states have internal predecessors, (16101), 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 01:28:07,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8888 states to 8888 states and 16101 transitions. [2021-11-07 01:28:07,349 INFO L78 Accepts]: Start accepts. Automaton has 8888 states and 16101 transitions. Word has length 72 [2021-11-07 01:28:07,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:28:07,349 INFO L470 AbstractCegarLoop]: Abstraction has 8888 states and 16101 transitions. [2021-11-07 01:28:07,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 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 01:28:07,349 INFO L276 IsEmpty]: Start isEmpty. Operand 8888 states and 16101 transitions. [2021-11-07 01:28:07,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-07 01:28:07,353 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:28:07,353 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:28:07,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 01:28:07,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:28:07,560 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:28:07,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:28:07,561 INFO L85 PathProgramCache]: Analyzing trace with hash -223079496, now seen corresponding path program 1 times [2021-11-07 01:28:07,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:28:07,562 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [865356142] [2021-11-07 01:28:07,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:28:07,562 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:28:07,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:28:07,564 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:28:07,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-07 01:28:08,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:28:08,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:28:08,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:28:08,405 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 01:28:08,405 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:28:08,653 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 01:28:08,653 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:28:08,653 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [865356142] [2021-11-07 01:28:08,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [865356142] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:28:08,654 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:28:08,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-07 01:28:08,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701438202] [2021-11-07 01:28:08,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:28:08,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:28:08,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:28:08,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:28:08,656 INFO L87 Difference]: Start difference. First operand 8888 states and 16101 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 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 01:28:18,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:28:18,544 INFO L93 Difference]: Finished difference Result 27652 states and 50448 transitions. [2021-11-07 01:28:18,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:28:18,545 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 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 73 [2021-11-07 01:28:18,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:28:18,576 INFO L225 Difference]: With dead ends: 27652 [2021-11-07 01:28:18,576 INFO L226 Difference]: Without dead ends: 20432 [2021-11-07 01:28:18,590 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:28:18,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20432 states. [2021-11-07 01:28:19,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20432 to 15432. [2021-11-07 01:28:19,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15432 states, 15427 states have (on average 1.8138328903869838) internal successors, (27982), 15431 states have internal predecessors, (27982), 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 01:28:19,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15432 states to 15432 states and 27982 transitions. [2021-11-07 01:28:19,497 INFO L78 Accepts]: Start accepts. Automaton has 15432 states and 27982 transitions. Word has length 73 [2021-11-07 01:28:19,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:28:19,498 INFO L470 AbstractCegarLoop]: Abstraction has 15432 states and 27982 transitions. [2021-11-07 01:28:19,498 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 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 01:28:19,498 INFO L276 IsEmpty]: Start isEmpty. Operand 15432 states and 27982 transitions. [2021-11-07 01:28:19,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-07 01:28:19,502 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:28:19,502 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:28:19,520 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-07 01:28:19,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:28:19,716 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:28:19,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:28:19,717 INFO L85 PathProgramCache]: Analyzing trace with hash -809885510, now seen corresponding path program 1 times [2021-11-07 01:28:19,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:28:19,717 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1706553708] [2021-11-07 01:28:19,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:28:19,718 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:28:19,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:28:19,718 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:28:19,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 01:28:20,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:28:20,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:28:20,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:28:20,548 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 01:28:20,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:28:20,793 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 01:28:20,793 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:28:20,793 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1706553708] [2021-11-07 01:28:20,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1706553708] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:28:20,793 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:28:20,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:28:20,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612848548] [2021-11-07 01:28:20,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:28:20,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:28:20,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:28:20,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:28:20,795 INFO L87 Difference]: Start difference. First operand 15432 states and 27982 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 3 states have internal predecessors, (73), 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 01:28:26,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:28:26,327 INFO L93 Difference]: Finished difference Result 34844 states and 63427 transitions. [2021-11-07 01:28:26,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:28:26,327 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 3 states have internal predecessors, (73), 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 73 [2021-11-07 01:28:26,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:28:26,357 INFO L225 Difference]: With dead ends: 34844 [2021-11-07 01:28:26,357 INFO L226 Difference]: Without dead ends: 21065 [2021-11-07 01:28:26,367 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:28:26,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21065 states. [2021-11-07 01:28:27,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21065 to 15949. [2021-11-07 01:28:27,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15949 states, 15944 states have (on average 1.7871299548419468) internal successors, (28494), 15948 states have internal predecessors, (28494), 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 01:28:27,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15949 states to 15949 states and 28494 transitions. [2021-11-07 01:28:27,383 INFO L78 Accepts]: Start accepts. Automaton has 15949 states and 28494 transitions. Word has length 73 [2021-11-07 01:28:27,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:28:27,384 INFO L470 AbstractCegarLoop]: Abstraction has 15949 states and 28494 transitions. [2021-11-07 01:28:27,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 3 states have internal predecessors, (73), 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 01:28:27,384 INFO L276 IsEmpty]: Start isEmpty. Operand 15949 states and 28494 transitions. [2021-11-07 01:28:27,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-07 01:28:27,386 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:28:27,386 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:28:27,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-07 01:28:27,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:28:27,587 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:28:27,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:28:27,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1086645120, now seen corresponding path program 1 times [2021-11-07 01:28:27,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:28:27,589 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [499088526] [2021-11-07 01:28:27,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:28:27,589 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:28:27,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:28:27,591 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:28:27,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-07 01:28:28,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:28:28,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:28:28,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:28:28,503 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 01:28:28,504 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:28:28,724 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 01:28:28,724 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:28:28,725 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [499088526] [2021-11-07 01:28:28,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [499088526] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:28:28,725 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:28:28,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:28:28,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396476449] [2021-11-07 01:28:28,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:28:28,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:28:28,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:28:28,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:28:28,727 INFO L87 Difference]: Start difference. First operand 15949 states and 28494 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 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 01:28:34,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:28:34,513 INFO L93 Difference]: Finished difference Result 113322 states and 203939 transitions. [2021-11-07 01:28:34,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 01:28:34,514 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 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 75 [2021-11-07 01:28:34,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:28:34,679 INFO L225 Difference]: With dead ends: 113322 [2021-11-07 01:28:34,679 INFO L226 Difference]: Without dead ends: 97421 [2021-11-07 01:28:34,704 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 145 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 01:28:34,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97421 states. [2021-11-07 01:28:36,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97421 to 25771. [2021-11-07 01:28:36,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25771 states, 25766 states have (on average 1.7956609485368316) internal successors, (46267), 25770 states have internal predecessors, (46267), 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 01:28:36,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25771 states to 25771 states and 46267 transitions. [2021-11-07 01:28:36,715 INFO L78 Accepts]: Start accepts. Automaton has 25771 states and 46267 transitions. Word has length 75 [2021-11-07 01:28:36,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:28:36,716 INFO L470 AbstractCegarLoop]: Abstraction has 25771 states and 46267 transitions. [2021-11-07 01:28:36,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 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 01:28:36,716 INFO L276 IsEmpty]: Start isEmpty. Operand 25771 states and 46267 transitions. [2021-11-07 01:28:36,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-07 01:28:36,718 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:28:36,718 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:28:36,732 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-07 01:28:36,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:28:36,919 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:28:36,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:28:36,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1361404734, now seen corresponding path program 1 times [2021-11-07 01:28:36,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:28:36,920 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1537612629] [2021-11-07 01:28:36,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:28:36,920 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:28:36,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:28:36,922 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:28:36,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-07 01:28:37,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:28:37,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:28:37,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:28:37,897 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 01:28:37,897 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:28:38,132 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 01:28:38,133 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:28:38,133 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1537612629] [2021-11-07 01:28:38,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1537612629] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:28:38,133 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:28:38,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 01:28:38,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315135366] [2021-11-07 01:28:38,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:28:38,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:28:38,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:28:38,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:28:38,135 INFO L87 Difference]: Start difference. First operand 25771 states and 46267 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 5 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 01:28:42,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:28:42,982 INFO L93 Difference]: Finished difference Result 63283 states and 114521 transitions. [2021-11-07 01:28:42,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 01:28:42,983 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 5 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 75 [2021-11-07 01:28:42,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:28:43,044 INFO L225 Difference]: With dead ends: 63283 [2021-11-07 01:28:43,044 INFO L226 Difference]: Without dead ends: 43146 [2021-11-07 01:28:43,064 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-11-07 01:28:43,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43146 states. [2021-11-07 01:28:44,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43146 to 25736. [2021-11-07 01:28:44,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25736 states, 25731 states have (on average 1.795383001049318) internal successors, (46197), 25735 states have internal predecessors, (46197), 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 01:28:44,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25736 states to 25736 states and 46197 transitions. [2021-11-07 01:28:44,986 INFO L78 Accepts]: Start accepts. Automaton has 25736 states and 46197 transitions. Word has length 75 [2021-11-07 01:28:44,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:28:44,987 INFO L470 AbstractCegarLoop]: Abstraction has 25736 states and 46197 transitions. [2021-11-07 01:28:44,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 5 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 01:28:44,987 INFO L276 IsEmpty]: Start isEmpty. Operand 25736 states and 46197 transitions. [2021-11-07 01:28:44,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-07 01:28:44,990 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:28:44,990 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:28:45,004 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-07 01:28:45,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:28:45,191 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:28:45,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:28:45,191 INFO L85 PathProgramCache]: Analyzing trace with hash -777663092, now seen corresponding path program 1 times [2021-11-07 01:28:45,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:28:45,192 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2047873638] [2021-11-07 01:28:45,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:28:45,193 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:28:45,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:28:45,194 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:28:45,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-07 01:28:46,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:28:46,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:28:46,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:28:46,286 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 01:28:46,286 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:28:46,620 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 01:28:46,621 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:28:46,621 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2047873638] [2021-11-07 01:28:46,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2047873638] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:28:46,621 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:28:46,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:28:46,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358019145] [2021-11-07 01:28:46,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:28:46,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:28:46,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:28:46,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:28:46,623 INFO L87 Difference]: Start difference. First operand 25736 states and 46197 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 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 01:28:49,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:28:49,642 INFO L93 Difference]: Finished difference Result 69100 states and 124305 transitions. [2021-11-07 01:28:49,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:28:49,642 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 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 82 [2021-11-07 01:28:49,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:28:49,705 INFO L225 Difference]: With dead ends: 69100 [2021-11-07 01:28:49,706 INFO L226 Difference]: Without dead ends: 45267 [2021-11-07 01:28:49,720 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 161 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 01:28:49,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45267 states. [2021-11-07 01:28:52,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45267 to 45252. [2021-11-07 01:28:52,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45252 states, 45247 states have (on average 1.8010033814396536) internal successors, (81490), 45251 states have internal predecessors, (81490), 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 01:28:52,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45252 states to 45252 states and 81490 transitions. [2021-11-07 01:28:52,643 INFO L78 Accepts]: Start accepts. Automaton has 45252 states and 81490 transitions. Word has length 82 [2021-11-07 01:28:52,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:28:52,643 INFO L470 AbstractCegarLoop]: Abstraction has 45252 states and 81490 transitions. [2021-11-07 01:28:52,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 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 01:28:52,643 INFO L276 IsEmpty]: Start isEmpty. Operand 45252 states and 81490 transitions. [2021-11-07 01:28:52,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-07 01:28:52,646 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:28:52,647 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:28:52,660 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-07 01:28:52,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:28:52,847 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:28:52,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:28:52,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1588978159, now seen corresponding path program 1 times [2021-11-07 01:28:52,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:28:52,849 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [505800352] [2021-11-07 01:28:52,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:28:52,849 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:28:52,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:28:52,850 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:28:52,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949ff8f2-a296-4cf5-a341-bf5ff8c9dbb4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-07 01:28:53,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:28:53,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:28:53,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:28:54,007 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 01:28:54,007 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:28:54,292 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 01:28:54,292 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:28:54,293 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [505800352] [2021-11-07 01:28:54,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [505800352] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:28:54,293 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:28:54,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:28:54,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612624261] [2021-11-07 01:28:54,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:28:54,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:28:54,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:28:54,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:28:54,296 INFO L87 Difference]: Start difference. First operand 45252 states and 81490 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:59,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:28:59,734 INFO L93 Difference]: Finished difference Result 126372 states and 227806 transitions. [2021-11-07 01:28:59,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:28:59,734 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-11-07 01:28:59,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:28:59,881 INFO L225 Difference]: With dead ends: 126372 [2021-11-07 01:28:59,881 INFO L226 Difference]: Without dead ends: 84140 [2021-11-07 01:28:59,913 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 163 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 01:28:59,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84140 states.