./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec3_product23.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_c55a6fe7-e163-4e72-9b22-290aa68f44bd/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c55a6fe7-e163-4e72-9b22-290aa68f44bd/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_c55a6fe7-e163-4e72-9b22-290aa68f44bd/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c55a6fe7-e163-4e72-9b22-290aa68f44bd/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product23.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c55a6fe7-e163-4e72-9b22-290aa68f44bd/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_c55a6fe7-e163-4e72-9b22-290aa68f44bd/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 f91feaa60fbddcfc87f4cdb3911bff4dfabb88b0b67a46a205760e052b15032c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:24:10,770 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:24:10,772 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:24:10,808 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:24:10,811 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:24:10,816 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:24:10,820 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:24:10,824 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:24:10,827 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:24:10,833 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:24:10,834 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:24:10,836 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:24:10,837 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:24:10,839 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:24:10,840 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:24:10,842 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:24:10,843 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:24:10,844 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:24:10,847 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:24:10,849 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:24:10,852 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:24:10,853 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:24:10,855 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:24:10,856 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:24:10,860 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:24:10,867 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:24:10,868 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:24:10,869 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:24:10,870 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:24:10,871 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:24:10,873 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:24:10,874 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:24:10,876 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:24:10,877 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:24:10,879 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:24:10,880 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:24:10,880 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:24:10,881 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:24:10,881 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:24:10,882 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:24:10,883 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:24:10,884 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c55a6fe7-e163-4e72-9b22-290aa68f44bd/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:24:10,929 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:24:10,930 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:24:10,931 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:24:10,932 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:24:10,932 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:24:10,932 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:24:10,932 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:24:10,933 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:24:10,939 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:24:10,939 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:24:10,940 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:24:10,941 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:24:10,941 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:24:10,941 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:24:10,941 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:24:10,942 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:24:10,943 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:24:10,943 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:24:10,943 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:24:10,943 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:24:10,943 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:24:10,944 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:24:10,944 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:24:10,944 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:24:10,944 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:24:10,944 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:24:10,945 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:24:10,945 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:24:10,945 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:24:10,947 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:24:10,947 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:24:10,947 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:24:10,948 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:24:10,948 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:24:10,948 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:24:10,948 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:24:10,949 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:24:10,949 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:24:10,949 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:24:10,949 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_c55a6fe7-e163-4e72-9b22-290aa68f44bd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c55a6fe7-e163-4e72-9b22-290aa68f44bd/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f91feaa60fbddcfc87f4cdb3911bff4dfabb88b0b67a46a205760e052b15032c [2021-11-07 01:24:11,294 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:24:11,324 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:24:11,327 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:24:11,329 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:24:11,330 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:24:11,331 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c55a6fe7-e163-4e72-9b22-290aa68f44bd/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/product-lines/elevator_spec3_product23.cil.c [2021-11-07 01:24:11,391 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c55a6fe7-e163-4e72-9b22-290aa68f44bd/bin/utaipan-UUZaoUuFF8/data/8dc14b79a/2e104c56ac9548a1be9c4ebc71249f05/FLAGaa1636cc3 [2021-11-07 01:24:12,187 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:24:12,188 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c55a6fe7-e163-4e72-9b22-290aa68f44bd/sv-benchmarks/c/product-lines/elevator_spec3_product23.cil.c [2021-11-07 01:24:12,222 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c55a6fe7-e163-4e72-9b22-290aa68f44bd/bin/utaipan-UUZaoUuFF8/data/8dc14b79a/2e104c56ac9548a1be9c4ebc71249f05/FLAGaa1636cc3 [2021-11-07 01:24:12,326 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c55a6fe7-e163-4e72-9b22-290aa68f44bd/bin/utaipan-UUZaoUuFF8/data/8dc14b79a/2e104c56ac9548a1be9c4ebc71249f05 [2021-11-07 01:24:12,329 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:24:12,330 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:24:12,341 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:24:12,342 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:24:12,346 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:24:12,351 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:24:12" (1/1) ... [2021-11-07 01:24:12,352 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d7b7808 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:24:12, skipping insertion in model container [2021-11-07 01:24:12,352 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:24:12" (1/1) ... [2021-11-07 01:24:12,361 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:24:12,470 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:24:12,690 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_c55a6fe7-e163-4e72-9b22-290aa68f44bd/sv-benchmarks/c/product-lines/elevator_spec3_product23.cil.c[5798,5811] [2021-11-07 01:24:13,020 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:24:13,039 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 01:24:13,040 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@c8ca8e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:24:13, skipping insertion in model container [2021-11-07 01:24:13,040 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:24:13,040 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:24:13,043 INFO L168 Benchmark]: Toolchain (without parser) took 711.29 ms. Allocated memory is still 107.0 MB. Free memory was 65.6 MB in the beginning and 67.0 MB in the end (delta: -1.4 MB). Peak memory consumption was 8.9 MB. Max. memory is 16.1 GB. [2021-11-07 01:24:13,044 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 107.0 MB. Free memory is still 84.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:24:13,046 INFO L168 Benchmark]: CACSL2BoogieTranslator took 699.19 ms. Allocated memory is still 107.0 MB. Free memory was 65.4 MB in the beginning and 67.3 MB in the end (delta: -1.9 MB). Peak memory consumption was 6.8 MB. Max. memory is 16.1 GB. [2021-11-07 01:24:13,049 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 107.0 MB. Free memory is still 84.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 699.19 ms. Allocated memory is still 107.0 MB. Free memory was 65.4 MB in the beginning and 67.3 MB in the end (delta: -1.9 MB). Peak memory consumption was 6.8 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2501]: 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_c55a6fe7-e163-4e72-9b22-290aa68f44bd/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c55a6fe7-e163-4e72-9b22-290aa68f44bd/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_c55a6fe7-e163-4e72-9b22-290aa68f44bd/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c55a6fe7-e163-4e72-9b22-290aa68f44bd/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product23.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c55a6fe7-e163-4e72-9b22-290aa68f44bd/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_c55a6fe7-e163-4e72-9b22-290aa68f44bd/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 f91feaa60fbddcfc87f4cdb3911bff4dfabb88b0b67a46a205760e052b15032c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:24:15,435 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:24:15,436 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:24:15,472 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:24:15,474 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:24:15,476 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:24:15,479 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:24:15,486 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:24:15,490 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:24:15,492 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:24:15,493 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:24:15,497 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:24:15,497 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:24:15,506 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:24:15,508 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:24:15,510 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:24:15,513 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:24:15,516 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:24:15,519 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:24:15,532 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:24:15,534 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:24:15,538 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:24:15,540 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:24:15,541 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:24:15,545 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:24:15,549 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:24:15,549 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:24:15,551 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:24:15,553 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:24:15,554 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:24:15,555 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:24:15,556 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:24:15,558 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:24:15,560 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:24:15,561 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:24:15,562 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:24:15,563 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:24:15,563 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:24:15,564 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:24:15,566 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:24:15,566 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:24:15,572 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c55a6fe7-e163-4e72-9b22-290aa68f44bd/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 01:24:15,631 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:24:15,632 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:24:15,633 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:24:15,633 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:24:15,633 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:24:15,633 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:24:15,634 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:24:15,634 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:24:15,634 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:24:15,635 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:24:15,635 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:24:15,635 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:24:15,636 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:24:15,636 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:24:15,636 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:24:15,636 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:24:15,640 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:24:15,640 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:24:15,640 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:24:15,640 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:24:15,641 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:24:15,641 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:24:15,641 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:24:15,642 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:24:15,642 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:24:15,642 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:24:15,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:24:15,643 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:24:15,644 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:24:15,644 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:24:15,644 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:24:15,645 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:24:15,645 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:24:15,645 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:24:15,646 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:24:15,646 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_c55a6fe7-e163-4e72-9b22-290aa68f44bd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c55a6fe7-e163-4e72-9b22-290aa68f44bd/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f91feaa60fbddcfc87f4cdb3911bff4dfabb88b0b67a46a205760e052b15032c [2021-11-07 01:24:16,037 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:24:16,061 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:24:16,064 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:24:16,065 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:24:16,066 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:24:16,067 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c55a6fe7-e163-4e72-9b22-290aa68f44bd/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/product-lines/elevator_spec3_product23.cil.c [2021-11-07 01:24:16,143 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c55a6fe7-e163-4e72-9b22-290aa68f44bd/bin/utaipan-UUZaoUuFF8/data/e51358891/460cd0e0d58b4df28166acf6e3b5bd9d/FLAGb090f9dd3 [2021-11-07 01:24:16,904 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:24:16,907 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c55a6fe7-e163-4e72-9b22-290aa68f44bd/sv-benchmarks/c/product-lines/elevator_spec3_product23.cil.c [2021-11-07 01:24:16,939 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c55a6fe7-e163-4e72-9b22-290aa68f44bd/bin/utaipan-UUZaoUuFF8/data/e51358891/460cd0e0d58b4df28166acf6e3b5bd9d/FLAGb090f9dd3 [2021-11-07 01:24:17,017 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c55a6fe7-e163-4e72-9b22-290aa68f44bd/bin/utaipan-UUZaoUuFF8/data/e51358891/460cd0e0d58b4df28166acf6e3b5bd9d [2021-11-07 01:24:17,020 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:24:17,021 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:24:17,022 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:24:17,023 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:24:17,027 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:24:17,028 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:24:17" (1/1) ... [2021-11-07 01:24:17,029 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@652ca02a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:24:17, skipping insertion in model container [2021-11-07 01:24:17,032 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:24:17" (1/1) ... [2021-11-07 01:24:17,039 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:24:17,127 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:24:17,373 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_c55a6fe7-e163-4e72-9b22-290aa68f44bd/sv-benchmarks/c/product-lines/elevator_spec3_product23.cil.c[5798,5811] [2021-11-07 01:24:17,738 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:24:17,754 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:24:17,780 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:24:17,796 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_c55a6fe7-e163-4e72-9b22-290aa68f44bd/sv-benchmarks/c/product-lines/elevator_spec3_product23.cil.c[5798,5811] [2021-11-07 01:24:17,971 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:24:17,976 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:24:17,992 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_c55a6fe7-e163-4e72-9b22-290aa68f44bd/sv-benchmarks/c/product-lines/elevator_spec3_product23.cil.c[5798,5811] [2021-11-07 01:24:18,061 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:24:18,095 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:24:18,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:24:18 WrapperNode [2021-11-07 01:24:18,096 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:24:18,098 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:24:18,098 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:24:18,098 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:24:18,106 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:24:18" (1/1) ... [2021-11-07 01:24:18,164 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:24:18" (1/1) ... [2021-11-07 01:24:18,768 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:24:18,769 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:24:18,769 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:24:18,770 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:24:18,779 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:24:18" (1/1) ... [2021-11-07 01:24:18,779 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:24:18" (1/1) ... [2021-11-07 01:24:18,909 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:24:18" (1/1) ... [2021-11-07 01:24:18,910 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:24:18" (1/1) ... [2021-11-07 01:24:19,173 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:24:18" (1/1) ... [2021-11-07 01:24:19,499 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:24:18" (1/1) ... [2021-11-07 01:24:19,538 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:24:18" (1/1) ... [2021-11-07 01:24:19,703 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:24:19,704 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:24:19,705 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:24:19,705 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:24:19,706 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:24:18" (1/1) ... [2021-11-07 01:24:19,713 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:24:19,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c55a6fe7-e163-4e72-9b22-290aa68f44bd/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:24:19,772 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c55a6fe7-e163-4e72-9b22-290aa68f44bd/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:24:19,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c55a6fe7-e163-4e72-9b22-290aa68f44bd/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:24:19,862 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:24:19,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:24:19,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:24:19,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:24:40,898 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:24:40,899 INFO L299 CfgBuilder]: Removed 2077 assume(true) statements. [2021-11-07 01:24:40,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:24:40 BoogieIcfgContainer [2021-11-07 01:24:40,910 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:24:40,912 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:24:40,913 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:24:40,916 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:24:40,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:24:17" (1/3) ... [2021-11-07 01:24:40,917 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@789cfa6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:24:40, skipping insertion in model container [2021-11-07 01:24:40,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:24:18" (2/3) ... [2021-11-07 01:24:40,918 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@789cfa6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:24:40, skipping insertion in model container [2021-11-07 01:24:40,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:24:40" (3/3) ... [2021-11-07 01:24:40,919 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product23.cil.c [2021-11-07 01:24:40,925 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:24:40,925 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-07 01:24:41,022 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:24:41,029 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 01:24:41,029 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-11-07 01:24:41,228 INFO L276 IsEmpty]: Start isEmpty. Operand has 8983 states, 8972 states have (on average 1.8875390102541239) internal successors, (16935), 8982 states have internal predecessors, (16935), 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 01:24:41,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-07 01:24:41,268 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:24:41,269 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:24:41,270 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:24:41,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:24:41,280 INFO L85 PathProgramCache]: Analyzing trace with hash -610179148, now seen corresponding path program 1 times [2021-11-07 01:24:41,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:24:41,296 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1031451683] [2021-11-07 01:24:41,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:24:41,298 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:24:41,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c55a6fe7-e163-4e72-9b22-290aa68f44bd/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:24:41,306 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c55a6fe7-e163-4e72-9b22-290aa68f44bd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:24:41,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c55a6fe7-e163-4e72-9b22-290aa68f44bd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:24:41,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:24:41,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:24:41,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:24:42,023 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 01:24:42,023 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:24:42,195 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 01:24:42,195 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:24:42,196 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1031451683] [2021-11-07 01:24:42,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1031451683] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:24:42,197 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:24:42,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:24:42,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812302445] [2021-11-07 01:24:42,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:24:42,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:24:42,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:24:42,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:24:42,245 INFO L87 Difference]: Start difference. First operand has 8983 states, 8972 states have (on average 1.8875390102541239) internal successors, (16935), 8982 states have internal predecessors, (16935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:24:45,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:24:45,803 INFO L93 Difference]: Finished difference Result 62503 states and 117826 transitions. [2021-11-07 01:24:45,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 01:24:45,805 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-11-07 01:24:45,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:24:46,148 INFO L225 Difference]: With dead ends: 62503 [2021-11-07 01:24:46,148 INFO L226 Difference]: Without dead ends: 53521 [2021-11-07 01:24:46,185 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:24:46,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53521 states. [2021-11-07 01:24:46,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53521 to 8995. [2021-11-07 01:24:47,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8995 states, 8985 states have (on average 1.8844741235392322) internal successors, (16932), 8994 states have internal predecessors, (16932), 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 01:24:47,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8995 states to 8995 states and 16932 transitions. [2021-11-07 01:24:47,087 INFO L78 Accepts]: Start accepts. Automaton has 8995 states and 16932 transitions. Word has length 47 [2021-11-07 01:24:47,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:24:47,088 INFO L470 AbstractCegarLoop]: Abstraction has 8995 states and 16932 transitions. [2021-11-07 01:24:47,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:24:47,089 INFO L276 IsEmpty]: Start isEmpty. Operand 8995 states and 16932 transitions. [2021-11-07 01:24:47,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-07 01:24:47,092 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:24:47,092 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:24:47,112 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c55a6fe7-e163-4e72-9b22-290aa68f44bd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-07 01:24:47,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c55a6fe7-e163-4e72-9b22-290aa68f44bd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:24:47,308 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:24:47,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:24:47,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1975585822, now seen corresponding path program 1 times [2021-11-07 01:24:47,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:24:47,314 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1243153166] [2021-11-07 01:24:47,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:24:47,314 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:24:47,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c55a6fe7-e163-4e72-9b22-290aa68f44bd/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:24:47,320 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c55a6fe7-e163-4e72-9b22-290aa68f44bd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:24:47,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c55a6fe7-e163-4e72-9b22-290aa68f44bd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:24:47,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:24:47,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:24:47,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:24:47,809 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 01:24:47,809 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:24:47,957 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 01:24:47,957 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:24:47,957 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1243153166] [2021-11-07 01:24:47,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1243153166] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:24:47,958 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:24:47,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:24:47,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511388890] [2021-11-07 01:24:47,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:24:47,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:24:47,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:24:47,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:24:47,961 INFO L87 Difference]: Start difference. First operand 8995 states and 16932 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:24:48,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:24:48,311 INFO L93 Difference]: Finished difference Result 17902 states and 33707 transitions. [2021-11-07 01:24:48,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:24:48,312 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-11-07 01:24:48,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:24:48,342 INFO L225 Difference]: With dead ends: 17902 [2021-11-07 01:24:48,343 INFO L226 Difference]: Without dead ends: 8921 [2021-11-07 01:24:48,358 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:24:48,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8921 states. [2021-11-07 01:24:48,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8921 to 8921. [2021-11-07 01:24:48,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8921 states, 8911 states have (on average 1.8839636404443945) internal successors, (16788), 8920 states have internal predecessors, (16788), 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 01:24:48,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8921 states to 8921 states and 16788 transitions. [2021-11-07 01:24:48,659 INFO L78 Accepts]: Start accepts. Automaton has 8921 states and 16788 transitions. Word has length 49 [2021-11-07 01:24:48,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:24:48,660 INFO L470 AbstractCegarLoop]: Abstraction has 8921 states and 16788 transitions. [2021-11-07 01:24:48,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:24:48,661 INFO L276 IsEmpty]: Start isEmpty. Operand 8921 states and 16788 transitions. [2021-11-07 01:24:48,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-07 01:24:48,664 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:24:48,664 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:24:48,683 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c55a6fe7-e163-4e72-9b22-290aa68f44bd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:24:48,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c55a6fe7-e163-4e72-9b22-290aa68f44bd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:24:48,883 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:24:48,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:24:48,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1378256444, now seen corresponding path program 1 times [2021-11-07 01:24:48,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:24:48,885 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [167212417] [2021-11-07 01:24:48,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:24:48,885 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:24:48,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c55a6fe7-e163-4e72-9b22-290aa68f44bd/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:24:48,886 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c55a6fe7-e163-4e72-9b22-290aa68f44bd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:24:48,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c55a6fe7-e163-4e72-9b22-290aa68f44bd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:24:49,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:24:49,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 01:24:49,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:24:49,464 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 01:24:49,464 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:24:49,659 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 01:24:49,660 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:24:49,660 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [167212417] [2021-11-07 01:24:49,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [167212417] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:24:49,660 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:24:49,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 01:24:49,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610211341] [2021-11-07 01:24:49,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:24:49,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:24:49,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:24:49,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:24:49,663 INFO L87 Difference]: Start difference. First operand 8921 states and 16788 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:24:50,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:24:50,414 INFO L93 Difference]: Finished difference Result 17816 states and 33539 transitions. [2021-11-07 01:24:50,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:24:50,415 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-07 01:24:50,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:24:50,439 INFO L225 Difference]: With dead ends: 17816 [2021-11-07 01:24:50,439 INFO L226 Difference]: Without dead ends: 8921 [2021-11-07 01:24:50,453 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:24:50,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8921 states. [2021-11-07 01:24:50,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8921 to 8921. [2021-11-07 01:24:50,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8921 states, 8911 states have (on average 1.8828414319380542) internal successors, (16778), 8920 states have internal predecessors, (16778), 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 01:24:50,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8921 states to 8921 states and 16778 transitions. [2021-11-07 01:24:50,734 INFO L78 Accepts]: Start accepts. Automaton has 8921 states and 16778 transitions. Word has length 51 [2021-11-07 01:24:50,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:24:50,734 INFO L470 AbstractCegarLoop]: Abstraction has 8921 states and 16778 transitions. [2021-11-07 01:24:50,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:24:50,736 INFO L276 IsEmpty]: Start isEmpty. Operand 8921 states and 16778 transitions. [2021-11-07 01:24:50,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-07 01:24:50,739 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:24:50,739 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:24:50,754 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c55a6fe7-e163-4e72-9b22-290aa68f44bd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:24:50,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c55a6fe7-e163-4e72-9b22-290aa68f44bd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:24:50,953 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:24:50,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:24:50,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1041766662, now seen corresponding path program 1 times [2021-11-07 01:24:50,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:24:50,955 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1812186248] [2021-11-07 01:24:50,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:24:50,955 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:24:50,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c55a6fe7-e163-4e72-9b22-290aa68f44bd/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:24:50,956 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c55a6fe7-e163-4e72-9b22-290aa68f44bd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:24:50,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c55a6fe7-e163-4e72-9b22-290aa68f44bd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:24:51,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:24:51,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:24:51,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:24:51,541 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 01:24:51,541 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:24:51,751 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 01:24:51,751 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:24:51,751 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1812186248] [2021-11-07 01:24:51,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1812186248] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:24:51,752 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:24:51,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 01:24:51,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331470767] [2021-11-07 01:24:51,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:24:51,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:24:51,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:24:51,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:24:51,754 INFO L87 Difference]: Start difference. First operand 8921 states and 16778 transitions. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:24:57,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:24:57,242 INFO L93 Difference]: Finished difference Result 39788 states and 74417 transitions. [2021-11-07 01:24:57,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-07 01:24:57,242 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-11-07 01:24:57,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:24:57,325 INFO L225 Difference]: With dead ends: 39788 [2021-11-07 01:24:57,325 INFO L226 Difference]: Without dead ends: 30937 [2021-11-07 01:24:57,339 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=143, Invalid=319, Unknown=0, NotChecked=0, Total=462 [2021-11-07 01:24:57,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30937 states. [2021-11-07 01:24:58,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30937 to 15793. [2021-11-07 01:24:58,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15793 states, 15783 states have (on average 1.8827219159855542) internal successors, (29715), 15792 states have internal predecessors, (29715), 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 01:24:58,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15793 states to 15793 states and 29715 transitions. [2021-11-07 01:24:58,250 INFO L78 Accepts]: Start accepts. Automaton has 15793 states and 29715 transitions. Word has length 55 [2021-11-07 01:24:58,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:24:58,252 INFO L470 AbstractCegarLoop]: Abstraction has 15793 states and 29715 transitions. [2021-11-07 01:24:58,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:24:58,252 INFO L276 IsEmpty]: Start isEmpty. Operand 15793 states and 29715 transitions. [2021-11-07 01:24:58,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-07 01:24:58,255 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:24:58,255 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:24:58,276 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c55a6fe7-e163-4e72-9b22-290aa68f44bd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:24:58,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c55a6fe7-e163-4e72-9b22-290aa68f44bd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:24:58,469 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:24:58,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:24:58,469 INFO L85 PathProgramCache]: Analyzing trace with hash 282176587, now seen corresponding path program 1 times [2021-11-07 01:24:58,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:24:58,471 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1161954287] [2021-11-07 01:24:58,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:24:58,471 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:24:58,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c55a6fe7-e163-4e72-9b22-290aa68f44bd/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:24:58,474 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c55a6fe7-e163-4e72-9b22-290aa68f44bd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:24:58,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c55a6fe7-e163-4e72-9b22-290aa68f44bd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:24:58,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:24:58,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:24:58,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:24:59,042 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 01:24:59,042 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:24:59,210 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 01:24:59,210 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:24:59,211 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1161954287] [2021-11-07 01:24:59,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1161954287] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:24:59,211 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:24:59,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 01:24:59,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360366742] [2021-11-07 01:24:59,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:24:59,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:24:59,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:24:59,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:24:59,213 INFO L87 Difference]: Start difference. First operand 15793 states and 29715 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:25:05,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:25:05,318 INFO L93 Difference]: Finished difference Result 129634 states and 243972 transitions. [2021-11-07 01:25:05,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 01:25:05,319 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-11-07 01:25:05,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:25:05,574 INFO L225 Difference]: With dead ends: 129634 [2021-11-07 01:25:05,575 INFO L226 Difference]: Without dead ends: 113911 [2021-11-07 01:25:05,622 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:25:05,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113911 states. [2021-11-07 01:25:07,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113911 to 29123. [2021-11-07 01:25:07,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29123 states, 29113 states have (on average 1.8785422319925806) internal successors, (54690), 29122 states have internal predecessors, (54690), 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 01:25:07,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29123 states to 29123 states and 54690 transitions. [2021-11-07 01:25:07,898 INFO L78 Accepts]: Start accepts. Automaton has 29123 states and 54690 transitions. Word has length 55 [2021-11-07 01:25:07,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:25:07,898 INFO L470 AbstractCegarLoop]: Abstraction has 29123 states and 54690 transitions. [2021-11-07 01:25:07,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:25:07,899 INFO L276 IsEmpty]: Start isEmpty. Operand 29123 states and 54690 transitions. [2021-11-07 01:25:07,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-07 01:25:07,900 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:25:07,901 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:25:07,925 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c55a6fe7-e163-4e72-9b22-290aa68f44bd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:25:08,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c55a6fe7-e163-4e72-9b22-290aa68f44bd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:25:08,126 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:25:08,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:25:08,126 INFO L85 PathProgramCache]: Analyzing trace with hash 2131918927, now seen corresponding path program 1 times [2021-11-07 01:25:08,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:25:08,127 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [429486598] [2021-11-07 01:25:08,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:25:08,127 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:25:08,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c55a6fe7-e163-4e72-9b22-290aa68f44bd/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:25:08,128 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c55a6fe7-e163-4e72-9b22-290aa68f44bd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:25:08,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c55a6fe7-e163-4e72-9b22-290aa68f44bd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:25:08,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:25:08,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:25:08,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:25:08,661 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 01:25:08,661 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:25:08,795 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 01:25:08,796 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:25:08,796 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [429486598] [2021-11-07 01:25:08,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [429486598] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:25:08,796 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:25:08,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:25:08,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24495882] [2021-11-07 01:25:08,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:25:08,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:25:08,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:25:08,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:25:08,798 INFO L87 Difference]: Start difference. First operand 29123 states and 54690 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:25:11,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:25:11,410 INFO L93 Difference]: Finished difference Result 86209 states and 161876 transitions. [2021-11-07 01:25:11,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:25:11,410 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-11-07 01:25:11,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:25:11,537 INFO L225 Difference]: With dead ends: 86209 [2021-11-07 01:25:11,537 INFO L226 Difference]: Without dead ends: 57118 [2021-11-07 01:25:11,573 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:25:11,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57118 states. [2021-11-07 01:25:12,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57118 to 28999. [2021-11-07 01:25:12,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28999 states, 28989 states have (on average 1.8780226982648591) internal successors, (54442), 28998 states have internal predecessors, (54442), 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 01:25:12,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28999 states to 28999 states and 54442 transitions. [2021-11-07 01:25:12,891 INFO L78 Accepts]: Start accepts. Automaton has 28999 states and 54442 transitions. Word has length 56 [2021-11-07 01:25:12,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:25:12,891 INFO L470 AbstractCegarLoop]: Abstraction has 28999 states and 54442 transitions. [2021-11-07 01:25:12,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:25:12,891 INFO L276 IsEmpty]: Start isEmpty. Operand 28999 states and 54442 transitions. [2021-11-07 01:25:12,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-07 01:25:12,893 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:25:12,894 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:25:12,912 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c55a6fe7-e163-4e72-9b22-290aa68f44bd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:25:13,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c55a6fe7-e163-4e72-9b22-290aa68f44bd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:25:13,108 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:25:13,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:25:13,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1503834706, now seen corresponding path program 1 times [2021-11-07 01:25:13,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:25:13,110 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [147485419] [2021-11-07 01:25:13,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:25:13,110 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:25:13,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c55a6fe7-e163-4e72-9b22-290aa68f44bd/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:25:13,111 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c55a6fe7-e163-4e72-9b22-290aa68f44bd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:25:13,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c55a6fe7-e163-4e72-9b22-290aa68f44bd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:25:13,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:25:13,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:25:13,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:25:13,666 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 01:25:13,666 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:25:13,837 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 01:25:13,837 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:25:13,837 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [147485419] [2021-11-07 01:25:13,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [147485419] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:25:13,838 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:25:13,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 01:25:13,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225967507] [2021-11-07 01:25:13,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:25:13,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:25:13,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:25:13,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:25:13,840 INFO L87 Difference]: Start difference. First operand 28999 states and 54442 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:25:32,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:25:32,367 INFO L93 Difference]: Finished difference Result 110297 states and 206683 transitions. [2021-11-07 01:25:32,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-07 01:25:32,369 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-11-07 01:25:32,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:25:32,516 INFO L225 Difference]: With dead ends: 110297 [2021-11-07 01:25:32,516 INFO L226 Difference]: Without dead ends: 81332 [2021-11-07 01:25:32,666 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2021-11-07 01:25:32,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81332 states. [2021-11-07 01:25:34,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81332 to 52181. [2021-11-07 01:25:34,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52181 states, 52171 states have (on average 1.841962009545533) internal successors, (96097), 52180 states have internal predecessors, (96097), 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 01:25:34,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52181 states to 52181 states and 96097 transitions. [2021-11-07 01:25:34,838 INFO L78 Accepts]: Start accepts. Automaton has 52181 states and 96097 transitions. Word has length 56 [2021-11-07 01:25:34,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:25:34,838 INFO L470 AbstractCegarLoop]: Abstraction has 52181 states and 96097 transitions. [2021-11-07 01:25:34,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:25:34,839 INFO L276 IsEmpty]: Start isEmpty. Operand 52181 states and 96097 transitions. [2021-11-07 01:25:34,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-07 01:25:34,840 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:25:34,841 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 01:25:34,852 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c55a6fe7-e163-4e72-9b22-290aa68f44bd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:25:35,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c55a6fe7-e163-4e72-9b22-290aa68f44bd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:25:35,051 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:25:35,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:25:35,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1216489331, now seen corresponding path program 1 times [2021-11-07 01:25:35,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:25:35,052 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1263349720] [2021-11-07 01:25:35,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:25:35,053 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:25:35,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c55a6fe7-e163-4e72-9b22-290aa68f44bd/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:25:35,054 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c55a6fe7-e163-4e72-9b22-290aa68f44bd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:25:35,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c55a6fe7-e163-4e72-9b22-290aa68f44bd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 01:25:35,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:25:35,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:25:35,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:25:35,667 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 01:25:35,670 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:25:35,806 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 01:25:35,806 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:25:35,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1263349720] [2021-11-07 01:25:35,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1263349720] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:25:35,806 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:25:35,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:25:35,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736634582] [2021-11-07 01:25:35,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:25:35,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:25:35,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:25:35,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:25:35,808 INFO L87 Difference]: Start difference. First operand 52181 states and 96097 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:25:42,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:25:42,143 INFO L93 Difference]: Finished difference Result 204678 states and 376861 transitions. [2021-11-07 01:25:42,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:25:42,143 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-11-07 01:25:42,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:25:42,388 INFO L225 Difference]: With dead ends: 204678 [2021-11-07 01:25:42,388 INFO L226 Difference]: Without dead ends: 152534 [2021-11-07 01:25:42,437 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:25:42,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152534 states. [2021-11-07 01:25:45,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152534 to 52067. [2021-11-07 01:25:45,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52067 states, 52057 states have (on average 1.8377355590986804) internal successors, (95667), 52066 states have internal predecessors, (95667), 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 01:25:45,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52067 states to 52067 states and 95667 transitions. [2021-11-07 01:25:45,378 INFO L78 Accepts]: Start accepts. Automaton has 52067 states and 95667 transitions. Word has length 59 [2021-11-07 01:25:45,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:25:45,378 INFO L470 AbstractCegarLoop]: Abstraction has 52067 states and 95667 transitions. [2021-11-07 01:25:45,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:25:45,379 INFO L276 IsEmpty]: Start isEmpty. Operand 52067 states and 95667 transitions. [2021-11-07 01:25:45,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-07 01:25:45,381 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:25:45,381 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 01:25:45,394 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c55a6fe7-e163-4e72-9b22-290aa68f44bd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:25:45,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c55a6fe7-e163-4e72-9b22-290aa68f44bd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:25:45,583 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:25:45,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:25:45,583 INFO L85 PathProgramCache]: Analyzing trace with hash 745688846, now seen corresponding path program 1 times [2021-11-07 01:25:45,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:25:45,584 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1594699032] [2021-11-07 01:25:45,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:25:45,584 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:25:45,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c55a6fe7-e163-4e72-9b22-290aa68f44bd/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:25:45,585 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c55a6fe7-e163-4e72-9b22-290aa68f44bd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:25:45,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c55a6fe7-e163-4e72-9b22-290aa68f44bd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 01:25:46,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:25:46,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:25:46,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:25:46,318 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 01:25:46,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:25:46,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:25:46,503 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:25:46,503 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1594699032] [2021-11-07 01:25:46,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1594699032] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:25:46,503 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:25:46,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 01:25:46,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217584966] [2021-11-07 01:25:46,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:25:46,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:25:46,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:25:46,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:25:46,505 INFO L87 Difference]: Start difference. First operand 52067 states and 95667 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)