./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec3_product27.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5dc92cc-5b4f-4d76-9506-c5a16402b338/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5dc92cc-5b4f-4d76-9506-c5a16402b338/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5dc92cc-5b4f-4d76-9506-c5a16402b338/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5dc92cc-5b4f-4d76-9506-c5a16402b338/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product27.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5dc92cc-5b4f-4d76-9506-c5a16402b338/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5dc92cc-5b4f-4d76-9506-c5a16402b338/bin/utaipan-aC7eJsxGYH --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4f7f32f81229c7756ac3848f16abf37868e5b5283c2f5648c26317015a8240dd --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:58:16,822 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:58:16,824 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:58:16,879 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:58:16,880 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:58:16,884 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:58:16,886 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:58:16,890 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:58:16,893 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:58:16,898 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:58:16,899 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:58:16,901 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:58:16,901 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:58:16,904 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:58:16,906 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:58:16,921 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:58:16,923 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:58:16,925 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:58:16,927 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:58:16,929 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:58:16,931 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:58:16,933 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:58:16,934 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:58:16,935 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:58:16,938 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:58:16,939 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:58:16,939 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:58:16,940 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:58:16,941 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:58:16,942 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:58:16,942 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:58:16,943 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:58:16,944 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:58:16,945 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:58:16,946 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:58:16,947 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:58:16,948 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:58:16,948 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:58:16,948 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:58:16,949 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:58:16,950 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:58:16,951 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5dc92cc-5b4f-4d76-9506-c5a16402b338/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 04:58:16,976 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:58:16,976 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:58:16,977 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:58:16,978 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:58:16,978 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:58:16,978 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:58:16,978 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 04:58:16,979 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:58:16,979 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:58:16,979 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 04:58:16,979 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 04:58:16,979 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:58:16,980 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 04:58:16,980 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 04:58:16,980 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 04:58:16,981 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:58:16,981 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:58:16,981 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:58:16,982 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:58:16,982 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:58:16,982 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:58:16,982 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:58:16,983 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:58:16,983 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:58:16,983 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:58:16,983 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:58:16,983 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:58:16,984 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:58:16,984 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:58:16,984 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:58:16,984 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:58:16,985 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:58:16,985 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:58:16,985 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:58:16,985 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 04:58:16,986 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 04:58:16,986 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:58:16,986 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:58:16,986 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:58:16,987 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_d5dc92cc-5b4f-4d76-9506-c5a16402b338/bin/utaipan-aC7eJsxGYH/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5dc92cc-5b4f-4d76-9506-c5a16402b338/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f7f32f81229c7756ac3848f16abf37868e5b5283c2f5648c26317015a8240dd [2021-11-03 04:58:17,220 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:58:17,244 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:58:17,247 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:58:17,249 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:58:17,250 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:58:17,251 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5dc92cc-5b4f-4d76-9506-c5a16402b338/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/product-lines/elevator_spec3_product27.cil.c [2021-11-03 04:58:17,317 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5dc92cc-5b4f-4d76-9506-c5a16402b338/bin/utaipan-aC7eJsxGYH/data/7946e8f10/81f2e0fa7aa948e4b1c3581e1026d08f/FLAGf47d2af17 [2021-11-03 04:58:18,072 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:58:18,076 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5dc92cc-5b4f-4d76-9506-c5a16402b338/sv-benchmarks/c/product-lines/elevator_spec3_product27.cil.c [2021-11-03 04:58:18,109 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5dc92cc-5b4f-4d76-9506-c5a16402b338/bin/utaipan-aC7eJsxGYH/data/7946e8f10/81f2e0fa7aa948e4b1c3581e1026d08f/FLAGf47d2af17 [2021-11-03 04:58:18,220 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5dc92cc-5b4f-4d76-9506-c5a16402b338/bin/utaipan-aC7eJsxGYH/data/7946e8f10/81f2e0fa7aa948e4b1c3581e1026d08f [2021-11-03 04:58:18,222 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:58:18,224 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:58:18,226 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:58:18,226 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:58:18,230 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:58:18,230 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:58:18" (1/1) ... [2021-11-03 04:58:18,232 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c3513ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:58:18, skipping insertion in model container [2021-11-03 04:58:18,232 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:58:18" (1/1) ... [2021-11-03 04:58:18,240 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:58:18,331 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:58:19,076 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_d5dc92cc-5b4f-4d76-9506-c5a16402b338/sv-benchmarks/c/product-lines/elevator_spec3_product27.cil.c[73003,73016] [2021-11-03 04:58:19,085 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:58:19,105 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-03 04:58:19,106 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@20335afb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:58:19, skipping insertion in model container [2021-11-03 04:58:19,106 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:58:19,107 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-03 04:58:19,110 INFO L168 Benchmark]: Toolchain (without parser) took 884.12 ms. Allocated memory is still 98.6 MB. Free memory was 66.8 MB in the beginning and 38.9 MB in the end (delta: 27.9 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2021-11-03 04:58:19,111 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 79.7 MB. Free memory is still 47.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:58:19,114 INFO L168 Benchmark]: CACSL2BoogieTranslator took 881.00 ms. Allocated memory is still 98.6 MB. Free memory was 66.7 MB in the beginning and 38.9 MB in the end (delta: 27.7 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2021-11-03 04:58:19,117 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 79.7 MB. Free memory is still 47.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 881.00 ms. Allocated memory is still 98.6 MB. Free memory was 66.7 MB in the beginning and 38.9 MB in the end (delta: 27.7 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 3106]: 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_d5dc92cc-5b4f-4d76-9506-c5a16402b338/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5dc92cc-5b4f-4d76-9506-c5a16402b338/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5dc92cc-5b4f-4d76-9506-c5a16402b338/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5dc92cc-5b4f-4d76-9506-c5a16402b338/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product27.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5dc92cc-5b4f-4d76-9506-c5a16402b338/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5dc92cc-5b4f-4d76-9506-c5a16402b338/bin/utaipan-aC7eJsxGYH --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4f7f32f81229c7756ac3848f16abf37868e5b5283c2f5648c26317015a8240dd --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:58:21,682 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:58:21,686 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:58:21,744 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:58:21,745 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:58:21,750 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:58:21,752 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:58:21,756 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:58:21,760 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:58:21,768 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:58:21,769 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:58:21,771 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:58:21,771 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:58:21,772 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:58:21,774 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:58:21,776 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:58:21,777 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:58:21,778 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:58:21,787 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:58:21,789 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:58:21,792 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:58:21,793 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:58:21,795 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:58:21,796 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:58:21,801 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:58:21,801 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:58:21,801 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:58:21,803 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:58:21,803 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:58:21,805 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:58:21,805 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:58:21,806 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:58:21,807 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:58:21,808 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:58:21,810 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:58:21,810 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:58:21,811 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:58:21,812 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:58:21,812 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:58:21,814 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:58:21,814 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:58:21,816 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5dc92cc-5b4f-4d76-9506-c5a16402b338/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-03 04:58:21,848 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:58:21,848 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:58:21,849 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:58:21,850 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:58:21,850 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:58:21,850 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:58:21,850 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:58:21,851 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:58:21,851 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:58:21,852 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:58:21,852 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:58:21,852 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:58:21,852 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:58:21,853 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:58:21,853 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:58:21,853 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:58:21,853 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:58:21,854 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 04:58:21,854 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 04:58:21,854 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:58:21,854 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:58:21,855 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:58:21,855 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:58:21,855 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:58:21,855 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 04:58:21,856 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:58:21,856 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:58:21,856 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:58:21,856 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:58:21,857 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:58:21,857 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 04:58:21,857 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 04:58:21,857 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:58:21,858 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:58:21,858 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:58:21,858 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_d5dc92cc-5b4f-4d76-9506-c5a16402b338/bin/utaipan-aC7eJsxGYH/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5dc92cc-5b4f-4d76-9506-c5a16402b338/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f7f32f81229c7756ac3848f16abf37868e5b5283c2f5648c26317015a8240dd [2021-11-03 04:58:22,242 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:58:22,260 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:58:22,262 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:58:22,264 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:58:22,264 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:58:22,265 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5dc92cc-5b4f-4d76-9506-c5a16402b338/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/product-lines/elevator_spec3_product27.cil.c [2021-11-03 04:58:22,343 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5dc92cc-5b4f-4d76-9506-c5a16402b338/bin/utaipan-aC7eJsxGYH/data/0de797540/fb1df74ec30345d1a70da39b8b3f73e3/FLAGd4b3bb736 [2021-11-03 04:58:23,066 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:58:23,067 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5dc92cc-5b4f-4d76-9506-c5a16402b338/sv-benchmarks/c/product-lines/elevator_spec3_product27.cil.c [2021-11-03 04:58:23,098 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5dc92cc-5b4f-4d76-9506-c5a16402b338/bin/utaipan-aC7eJsxGYH/data/0de797540/fb1df74ec30345d1a70da39b8b3f73e3/FLAGd4b3bb736 [2021-11-03 04:58:23,198 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5dc92cc-5b4f-4d76-9506-c5a16402b338/bin/utaipan-aC7eJsxGYH/data/0de797540/fb1df74ec30345d1a70da39b8b3f73e3 [2021-11-03 04:58:23,207 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:58:23,209 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:58:23,213 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:58:23,214 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:58:23,218 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:58:23,219 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:58:23" (1/1) ... [2021-11-03 04:58:23,236 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@666a0eba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:58:23, skipping insertion in model container [2021-11-03 04:58:23,236 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:58:23" (1/1) ... [2021-11-03 04:58:23,245 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:58:23,331 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:58:23,994 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_d5dc92cc-5b4f-4d76-9506-c5a16402b338/sv-benchmarks/c/product-lines/elevator_spec3_product27.cil.c[73003,73016] [2021-11-03 04:58:23,997 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:58:24,013 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 04:58:24,037 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:58:24,144 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_d5dc92cc-5b4f-4d76-9506-c5a16402b338/sv-benchmarks/c/product-lines/elevator_spec3_product27.cil.c[73003,73016] [2021-11-03 04:58:24,144 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:58:24,150 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:58:24,267 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_d5dc92cc-5b4f-4d76-9506-c5a16402b338/sv-benchmarks/c/product-lines/elevator_spec3_product27.cil.c[73003,73016] [2021-11-03 04:58:24,271 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:58:24,316 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:58:24,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:58:24 WrapperNode [2021-11-03 04:58:24,317 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:58:24,318 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:58:24,318 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:58:24,319 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:58:24,326 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:58:24" (1/1) ... [2021-11-03 04:58:24,405 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:58:24" (1/1) ... [2021-11-03 04:58:24,952 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:58:24,953 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:58:24,953 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:58:24,953 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:58:24,963 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:58:24" (1/1) ... [2021-11-03 04:58:24,963 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:58:24" (1/1) ... [2021-11-03 04:58:25,057 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:58:24" (1/1) ... [2021-11-03 04:58:25,072 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:58:24" (1/1) ... [2021-11-03 04:58:25,310 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:58:24" (1/1) ... [2021-11-03 04:58:25,612 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:58:24" (1/1) ... [2021-11-03 04:58:25,640 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:58:24" (1/1) ... [2021-11-03 04:58:25,726 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:58:25,739 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:58:25,740 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:58:25,740 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:58:25,741 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:58:24" (1/1) ... [2021-11-03 04:58:25,749 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:58:25,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5dc92cc-5b4f-4d76-9506-c5a16402b338/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:58:25,787 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5dc92cc-5b4f-4d76-9506-c5a16402b338/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:58:25,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5dc92cc-5b4f-4d76-9506-c5a16402b338/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:58:25,937 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 04:58:25,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 04:58:25,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:58:25,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:58:42,773 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:58:42,774 INFO L299 CfgBuilder]: Removed 1617 assume(true) statements. [2021-11-03 04:58:42,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:58:42 BoogieIcfgContainer [2021-11-03 04:58:42,785 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:58:42,787 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:58:42,787 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:58:42,790 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:58:42,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:58:23" (1/3) ... [2021-11-03 04:58:42,792 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46367f69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:58:42, skipping insertion in model container [2021-11-03 04:58:42,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:58:24" (2/3) ... [2021-11-03 04:58:42,792 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46367f69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:58:42, skipping insertion in model container [2021-11-03 04:58:42,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:58:42" (3/3) ... [2021-11-03 04:58:42,794 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product27.cil.c [2021-11-03 04:58:42,800 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:58:42,800 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-03 04:58:42,880 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:58:42,887 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 04:58:42,887 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-11-03 04:58:43,025 INFO L276 IsEmpty]: Start isEmpty. Operand has 6573 states, 6562 states have (on average 1.88128619323377) internal successors, (12345), 6572 states have internal predecessors, (12345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:58:43,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-03 04:58:43,048 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:58:43,049 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] [2021-11-03 04:58:43,050 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:58:43,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:58:43,056 INFO L85 PathProgramCache]: Analyzing trace with hash -416717237, now seen corresponding path program 1 times [2021-11-03 04:58:43,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:58:43,073 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1146316858] [2021-11-03 04:58:43,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:58:43,075 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:58:43,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5dc92cc-5b4f-4d76-9506-c5a16402b338/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:58:43,077 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5dc92cc-5b4f-4d76-9506-c5a16402b338/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:58:43,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5dc92cc-5b4f-4d76-9506-c5a16402b338/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 04:58:43,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:58:43,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 04:58:43,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:58:43,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:58:43,760 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:58:43,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:58:43,914 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:58:43,914 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1146316858] [2021-11-03 04:58:43,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1146316858] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:58:43,915 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:58:43,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 04:58:43,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833930817] [2021-11-03 04:58:43,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:58:43,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:58:43,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:58:43,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:58:43,961 INFO L87 Difference]: Start difference. First operand has 6573 states, 6562 states have (on average 1.88128619323377) internal successors, (12345), 6572 states have internal predecessors, (12345), 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) [2021-11-03 04:58:47,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:58:47,011 INFO L93 Difference]: Finished difference Result 45633 states and 85696 transitions. [2021-11-03 04:58:47,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-03 04:58:47,133 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 [2021-11-03 04:58:47,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:58:47,439 INFO L225 Difference]: With dead ends: 45633 [2021-11-03 04:58:47,439 INFO L226 Difference]: Without dead ends: 39061 [2021-11-03 04:58:47,469 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 [2021-11-03 04:58:47,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39061 states. [2021-11-03 04:58:48,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39061 to 6585. [2021-11-03 04:58:48,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6585 states, 6575 states have (on average 1.877110266159696) internal successors, (12342), 6584 states have internal predecessors, (12342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:58:48,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6585 states to 6585 states and 12342 transitions. [2021-11-03 04:58:48,153 INFO L78 Accepts]: Start accepts. Automaton has 6585 states and 12342 transitions. Word has length 47 [2021-11-03 04:58:48,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:58:48,154 INFO L470 AbstractCegarLoop]: Abstraction has 6585 states and 12342 transitions. [2021-11-03 04:58:48,154 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) [2021-11-03 04:58:48,155 INFO L276 IsEmpty]: Start isEmpty. Operand 6585 states and 12342 transitions. [2021-11-03 04:58:48,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-03 04:58:48,168 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:58:48,169 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] [2021-11-03 04:58:48,194 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5dc92cc-5b4f-4d76-9506-c5a16402b338/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 04:58:48,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5dc92cc-5b4f-4d76-9506-c5a16402b338/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:58:48,393 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:58:48,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:58:48,394 INFO L85 PathProgramCache]: Analyzing trace with hash -2125919563, now seen corresponding path program 1 times [2021-11-03 04:58:48,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:58:48,396 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1211126492] [2021-11-03 04:58:48,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:58:48,396 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:58:48,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5dc92cc-5b4f-4d76-9506-c5a16402b338/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:58:48,400 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5dc92cc-5b4f-4d76-9506-c5a16402b338/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:58:48,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5dc92cc-5b4f-4d76-9506-c5a16402b338/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 04:58:48,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:58:48,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:58:48,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:58:48,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:58:48,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:58:49,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:58:49,130 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:58:49,131 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1211126492] [2021-11-03 04:58:49,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1211126492] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:58:49,131 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:58:49,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 04:58:49,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007505424] [2021-11-03 04:58:49,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:58:49,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:58:49,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:58:49,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:58:49,139 INFO L87 Difference]: Start difference. First operand 6585 states and 12342 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) [2021-11-03 04:58:49,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:58:49,723 INFO L93 Difference]: Finished difference Result 13082 states and 24527 transitions. [2021-11-03 04:58:49,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:58:49,724 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 [2021-11-03 04:58:49,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:58:49,744 INFO L225 Difference]: With dead ends: 13082 [2021-11-03 04:58:49,744 INFO L226 Difference]: Without dead ends: 6511 [2021-11-03 04:58:49,753 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 [2021-11-03 04:58:49,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6511 states. [2021-11-03 04:58:49,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6511 to 6511. [2021-11-03 04:58:49,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6511 states, 6501 states have (on average 1.8763267189663129) internal successors, (12198), 6510 states have internal predecessors, (12198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:58:50,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6511 states to 6511 states and 12198 transitions. [2021-11-03 04:58:50,014 INFO L78 Accepts]: Start accepts. Automaton has 6511 states and 12198 transitions. Word has length 49 [2021-11-03 04:58:50,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:58:50,015 INFO L470 AbstractCegarLoop]: Abstraction has 6511 states and 12198 transitions. [2021-11-03 04:58:50,016 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) [2021-11-03 04:58:50,016 INFO L276 IsEmpty]: Start isEmpty. Operand 6511 states and 12198 transitions. [2021-11-03 04:58:50,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-03 04:58:50,019 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:58:50,019 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] [2021-11-03 04:58:50,040 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5dc92cc-5b4f-4d76-9506-c5a16402b338/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 04:58:50,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5dc92cc-5b4f-4d76-9506-c5a16402b338/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:58:50,236 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:58:50,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:58:50,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1571718355, now seen corresponding path program 1 times [2021-11-03 04:58:50,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:58:50,238 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [830543839] [2021-11-03 04:58:50,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:58:50,238 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:58:50,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5dc92cc-5b4f-4d76-9506-c5a16402b338/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:58:50,240 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5dc92cc-5b4f-4d76-9506-c5a16402b338/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:58:50,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5dc92cc-5b4f-4d76-9506-c5a16402b338/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 04:58:50,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:58:50,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-03 04:58:50,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:58:50,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:58:50,866 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:58:51,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:58:51,036 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:58:51,036 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [830543839] [2021-11-03 04:58:51,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [830543839] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:58:51,036 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:58:51,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-03 04:58:51,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766518215] [2021-11-03 04:58:51,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 04:58:51,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:58:51,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 04:58:51,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:58:51,039 INFO L87 Difference]: Start difference. First operand 6511 states and 12198 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) [2021-11-03 04:58:51,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:58:51,688 INFO L93 Difference]: Finished difference Result 12996 states and 24359 transitions. [2021-11-03 04:58:51,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 04:58:51,689 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 [2021-11-03 04:58:51,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:58:51,708 INFO L225 Difference]: With dead ends: 12996 [2021-11-03 04:58:51,708 INFO L226 Difference]: Without dead ends: 6511 [2021-11-03 04:58:51,718 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 [2021-11-03 04:58:51,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6511 states. [2021-11-03 04:58:51,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6511 to 6511. [2021-11-03 04:58:51,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6511 states, 6501 states have (on average 1.874788494077834) internal successors, (12188), 6510 states have internal predecessors, (12188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:58:52,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6511 states to 6511 states and 12188 transitions. [2021-11-03 04:58:52,004 INFO L78 Accepts]: Start accepts. Automaton has 6511 states and 12188 transitions. Word has length 51 [2021-11-03 04:58:52,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:58:52,004 INFO L470 AbstractCegarLoop]: Abstraction has 6511 states and 12188 transitions. [2021-11-03 04:58:52,005 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) [2021-11-03 04:58:52,005 INFO L276 IsEmpty]: Start isEmpty. Operand 6511 states and 12188 transitions. [2021-11-03 04:58:52,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-03 04:58:52,007 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:58:52,007 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] [2021-11-03 04:58:52,024 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5dc92cc-5b4f-4d76-9506-c5a16402b338/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 04:58:52,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5dc92cc-5b4f-4d76-9506-c5a16402b338/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:58:52,221 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:58:52,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:58:52,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1235228573, now seen corresponding path program 1 times [2021-11-03 04:58:52,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:58:52,222 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2035566319] [2021-11-03 04:58:52,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:58:52,223 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:58:52,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5dc92cc-5b4f-4d76-9506-c5a16402b338/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:58:52,225 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5dc92cc-5b4f-4d76-9506-c5a16402b338/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:58:52,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5dc92cc-5b4f-4d76-9506-c5a16402b338/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 04:58:52,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:58:52,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:58:52,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:58:52,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:58:52,905 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:58:53,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:58:53,122 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:58:53,122 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2035566319] [2021-11-03 04:58:53,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2035566319] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:58:53,123 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:58:53,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-03 04:58:53,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38988784] [2021-11-03 04:58:53,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 04:58:53,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:58:53,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 04:58:53,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:58:53,125 INFO L87 Difference]: Start difference. First operand 6511 states and 12188 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) [2021-11-03 04:59:01,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:59:01,245 INFO L93 Difference]: Finished difference Result 29184 states and 54221 transitions. [2021-11-03 04:59:01,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-03 04:59:01,246 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 [2021-11-03 04:59:01,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:59:01,312 INFO L225 Difference]: With dead ends: 29184 [2021-11-03 04:59:01,312 INFO L226 Difference]: Without dead ends: 22743 [2021-11-03 04:59:01,328 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 [2021-11-03 04:59:01,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22743 states. [2021-11-03 04:59:02,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22743 to 11455. [2021-11-03 04:59:02,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11455 states, 11445 states have (on average 1.874442988204456) internal successors, (21453), 11454 states have internal predecessors, (21453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:59:02,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11455 states to 11455 states and 21453 transitions. [2021-11-03 04:59:02,283 INFO L78 Accepts]: Start accepts. Automaton has 11455 states and 21453 transitions. Word has length 55 [2021-11-03 04:59:02,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:59:02,285 INFO L470 AbstractCegarLoop]: Abstraction has 11455 states and 21453 transitions. [2021-11-03 04:59:02,285 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) [2021-11-03 04:59:02,286 INFO L276 IsEmpty]: Start isEmpty. Operand 11455 states and 21453 transitions. [2021-11-03 04:59:02,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-03 04:59:02,289 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:59:02,289 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] [2021-11-03 04:59:02,310 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5dc92cc-5b4f-4d76-9506-c5a16402b338/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 04:59:02,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5dc92cc-5b4f-4d76-9506-c5a16402b338/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:59:02,505 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:59:02,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:59:02,506 INFO L85 PathProgramCache]: Analyzing trace with hash 475638498, now seen corresponding path program 1 times [2021-11-03 04:59:02,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:59:02,507 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1778929628] [2021-11-03 04:59:02,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:59:02,508 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:59:02,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5dc92cc-5b4f-4d76-9506-c5a16402b338/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:59:02,511 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5dc92cc-5b4f-4d76-9506-c5a16402b338/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:59:02,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5dc92cc-5b4f-4d76-9506-c5a16402b338/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 04:59:03,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:59:03,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:59:03,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:59:03,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:59:03,234 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:59:03,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:59:03,444 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:59:03,444 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1778929628] [2021-11-03 04:59:03,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1778929628] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:59:03,445 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:59:03,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-03 04:59:03,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50659294] [2021-11-03 04:59:03,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:59:03,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:59:03,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:59:03,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:59:03,447 INFO L87 Difference]: Start difference. First operand 11455 states and 21453 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) [2021-11-03 04:59:09,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:59:09,630 INFO L93 Difference]: Finished difference Result 94992 states and 178046 transitions. [2021-11-03 04:59:09,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 04:59:09,631 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 [2021-11-03 04:59:09,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:59:10,019 INFO L225 Difference]: With dead ends: 94992 [2021-11-03 04:59:10,020 INFO L226 Difference]: Without dead ends: 83607 [2021-11-03 04:59:10,048 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 [2021-11-03 04:59:10,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83607 states. [2021-11-03 04:59:11,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83607 to 21467. [2021-11-03 04:59:11,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21467 states, 21457 states have (on average 1.8737008901523977) internal successors, (40204), 21466 states have internal predecessors, (40204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:59:11,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21467 states to 21467 states and 40204 transitions. [2021-11-03 04:59:11,724 INFO L78 Accepts]: Start accepts. Automaton has 21467 states and 40204 transitions. Word has length 55 [2021-11-03 04:59:11,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:59:11,725 INFO L470 AbstractCegarLoop]: Abstraction has 21467 states and 40204 transitions. [2021-11-03 04:59:11,725 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) [2021-11-03 04:59:11,725 INFO L276 IsEmpty]: Start isEmpty. Operand 21467 states and 40204 transitions. [2021-11-03 04:59:11,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-03 04:59:11,728 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:59:11,728 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] [2021-11-03 04:59:11,749 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5dc92cc-5b4f-4d76-9506-c5a16402b338/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 04:59:11,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5dc92cc-5b4f-4d76-9506-c5a16402b338/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:59:11,942 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:59:11,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:59:11,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1969586458, now seen corresponding path program 1 times [2021-11-03 04:59:11,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:59:11,945 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [888150960] [2021-11-03 04:59:11,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:59:11,945 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:59:11,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5dc92cc-5b4f-4d76-9506-c5a16402b338/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:59:11,946 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5dc92cc-5b4f-4d76-9506-c5a16402b338/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:59:11,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5dc92cc-5b4f-4d76-9506-c5a16402b338/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 04:59:12,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:59:12,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:59:12,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:59:12,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:59:12,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:59:12,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:59:12,675 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:59:12,676 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [888150960] [2021-11-03 04:59:12,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [888150960] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:59:12,676 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:59:12,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 04:59:12,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069299516] [2021-11-03 04:59:12,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:59:12,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:59:12,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:59:12,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:59:12,678 INFO L87 Difference]: Start difference. First operand 21467 states and 40204 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) [2021-11-03 04:59:14,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:59:14,507 INFO L93 Difference]: Finished difference Result 63401 states and 118738 transitions. [2021-11-03 04:59:14,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:59:14,508 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 [2021-11-03 04:59:14,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:59:14,584 INFO L225 Difference]: With dead ends: 63401 [2021-11-03 04:59:14,584 INFO L226 Difference]: Without dead ends: 41966 [2021-11-03 04:59:14,616 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 [2021-11-03 04:59:14,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41966 states. [2021-11-03 04:59:15,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41966 to 21343. [2021-11-03 04:59:15,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21343 states, 21333 states have (on average 1.8729667651057047) internal successors, (39956), 21342 states have internal predecessors, (39956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:59:15,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21343 states to 21343 states and 39956 transitions. [2021-11-03 04:59:15,713 INFO L78 Accepts]: Start accepts. Automaton has 21343 states and 39956 transitions. Word has length 56 [2021-11-03 04:59:15,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:59:15,713 INFO L470 AbstractCegarLoop]: Abstraction has 21343 states and 39956 transitions. [2021-11-03 04:59:15,713 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) [2021-11-03 04:59:15,714 INFO L276 IsEmpty]: Start isEmpty. Operand 21343 states and 39956 transitions. [2021-11-03 04:59:15,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-03 04:59:15,715 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:59:15,716 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] [2021-11-03 04:59:15,734 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5dc92cc-5b4f-4d76-9506-c5a16402b338/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-03 04:59:15,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5dc92cc-5b4f-4d76-9506-c5a16402b338/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:59:15,930 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)] === [2021-11-03 04:59:15,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:59:15,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1697296617, now seen corresponding path program 1 times [2021-11-03 04:59:15,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:59:15,932 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [800965277] [2021-11-03 04:59:15,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:59:15,932 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:59:15,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5dc92cc-5b4f-4d76-9506-c5a16402b338/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:59:15,933 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5dc92cc-5b4f-4d76-9506-c5a16402b338/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:59:15,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5dc92cc-5b4f-4d76-9506-c5a16402b338/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 04:59:16,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:59:16,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 04:59:16,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:59:16,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:59:16,606 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:59:16,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:59:16,788 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:59:16,788 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [800965277] [2021-11-03 04:59:16,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [800965277] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:59:16,788 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:59:16,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-03 04:59:16,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235883498] [2021-11-03 04:59:16,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 04:59:16,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:59:16,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 04:59:16,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:59:16,790 INFO L87 Difference]: Start difference. First operand 21343 states and 39956 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) [2021-11-03 04:59:26,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:59:26,467 INFO L93 Difference]: Finished difference Result 81091 states and 151377 transitions. [2021-11-03 04:59:26,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-03 04:59:26,468 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 [2021-11-03 04:59:26,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:59:26,585 INFO L225 Difference]: With dead ends: 81091 [2021-11-03 04:59:26,586 INFO L226 Difference]: Without dead ends: 59782 [2021-11-03 04:59:26,613 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 [2021-11-03 04:59:26,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59782 states. [2021-11-03 04:59:28,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59782 to 41667. [2021-11-03 04:59:28,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41667 states, 41657 states have (on average 1.85613462323259) internal successors, (77321), 41666 states have internal predecessors, (77321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:59:28,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41667 states to 41667 states and 77321 transitions. [2021-11-03 04:59:28,466 INFO L78 Accepts]: Start accepts. Automaton has 41667 states and 77321 transitions. Word has length 56 [2021-11-03 04:59:28,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:59:28,466 INFO L470 AbstractCegarLoop]: Abstraction has 41667 states and 77321 transitions. [2021-11-03 04:59:28,467 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) [2021-11-03 04:59:28,467 INFO L276 IsEmpty]: Start isEmpty. Operand 41667 states and 77321 transitions. [2021-11-03 04:59:28,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-03 04:59:28,468 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:59:28,468 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] [2021-11-03 04:59:28,480 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5dc92cc-5b4f-4d76-9506-c5a16402b338/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-11-03 04:59:28,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5dc92cc-5b4f-4d76-9506-c5a16402b338/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:59:28,674 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)] === [2021-11-03 04:59:28,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:59:28,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1409951242, now seen corresponding path program 1 times [2021-11-03 04:59:28,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:59:28,675 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1657168694] [2021-11-03 04:59:28,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:59:28,675 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:59:28,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5dc92cc-5b4f-4d76-9506-c5a16402b338/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:59:28,676 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5dc92cc-5b4f-4d76-9506-c5a16402b338/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:59:28,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5dc92cc-5b4f-4d76-9506-c5a16402b338/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 04:59:29,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:59:29,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:59:29,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:59:29,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:59:29,416 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:59:29,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:59:29,568 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:59:29,569 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1657168694] [2021-11-03 04:59:29,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1657168694] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:59:29,569 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:59:29,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:59:29,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105929134] [2021-11-03 04:59:29,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:59:29,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:59:29,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:59:29,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:59:29,571 INFO L87 Difference]: Start difference. First operand 41667 states and 77321 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) [2021-11-03 04:59:33,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:59:33,696 INFO L93 Difference]: Finished difference Result 163302 states and 303107 transitions. [2021-11-03 04:59:33,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:59:33,696 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 [2021-11-03 04:59:33,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:59:33,922 INFO L225 Difference]: With dead ends: 163302 [2021-11-03 04:59:33,922 INFO L226 Difference]: Without dead ends: 121672 [2021-11-03 04:59:33,979 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 [2021-11-03 04:59:34,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121672 states. [2021-11-03 04:59:36,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121672 to 41553. [2021-11-03 04:59:36,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41553 states, 41543 states have (on average 1.850877404135474) internal successors, (76891), 41552 states have internal predecessors, (76891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:59:36,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41553 states to 41553 states and 76891 transitions. [2021-11-03 04:59:36,319 INFO L78 Accepts]: Start accepts. Automaton has 41553 states and 76891 transitions. Word has length 59 [2021-11-03 04:59:36,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:59:36,320 INFO L470 AbstractCegarLoop]: Abstraction has 41553 states and 76891 transitions. [2021-11-03 04:59:36,320 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) [2021-11-03 04:59:36,320 INFO L276 IsEmpty]: Start isEmpty. Operand 41553 states and 76891 transitions. [2021-11-03 04:59:36,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-03 04:59:36,321 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:59:36,321 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] [2021-11-03 04:59:36,331 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5dc92cc-5b4f-4d76-9506-c5a16402b338/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-03 04:59:36,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5dc92cc-5b4f-4d76-9506-c5a16402b338/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:59:36,525 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)] === [2021-11-03 04:59:36,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:59:36,525 INFO L85 PathProgramCache]: Analyzing trace with hash 939150757, now seen corresponding path program 1 times [2021-11-03 04:59:36,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:59:36,525 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [507125500] [2021-11-03 04:59:36,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:59:36,526 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:59:36,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5dc92cc-5b4f-4d76-9506-c5a16402b338/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:59:36,526 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5dc92cc-5b4f-4d76-9506-c5a16402b338/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:59:36,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5dc92cc-5b4f-4d76-9506-c5a16402b338/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-03 04:59:37,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:59:37,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:59:37,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:59:37,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:59:37,232 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:59:37,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:59:37,420 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:59:37,420 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [507125500] [2021-11-03 04:59:37,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [507125500] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:59:37,420 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:59:37,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-03 04:59:37,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191347454] [2021-11-03 04:59:37,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:59:37,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:59:37,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:59:37,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:59:37,422 INFO L87 Difference]: Start difference. First operand 41553 states and 76891 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)