./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5577528c45849c92d31dcecadbfe6524610e7683d1e420d37b6f0ce59c6c59b8 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 23:35:46,735 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 23:35:46,738 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 23:35:46,792 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 23:35:46,792 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 23:35:46,794 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 23:35:46,796 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 23:35:46,812 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 23:35:46,814 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 23:35:46,815 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 23:35:46,817 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 23:35:46,818 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 23:35:46,819 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 23:35:46,820 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 23:35:46,825 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 23:35:46,828 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 23:35:46,830 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 23:35:46,838 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 23:35:46,841 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 23:35:46,851 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 23:35:46,854 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 23:35:46,857 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 23:35:46,860 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 23:35:46,861 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 23:35:46,865 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 23:35:46,865 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 23:35:46,866 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 23:35:46,868 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 23:35:46,868 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 23:35:46,870 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 23:35:46,870 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 23:35:46,871 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 23:35:46,873 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 23:35:46,874 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 23:35:46,876 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 23:35:46,876 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 23:35:46,877 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 23:35:46,877 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 23:35:46,878 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 23:35:46,879 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 23:35:46,880 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 23:35:46,880 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-20 23:35:46,925 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 23:35:46,931 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 23:35:46,932 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 23:35:46,932 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 23:35:46,933 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 23:35:46,933 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 23:35:46,933 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 23:35:46,934 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 23:35:46,934 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 23:35:46,934 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-20 23:35:46,935 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 23:35:46,935 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 23:35:46,935 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-20 23:35:46,936 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-20 23:35:46,936 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 23:35:46,936 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-20 23:35:46,936 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-20 23:35:46,936 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-20 23:35:46,937 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 23:35:46,937 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 23:35:46,938 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 23:35:46,938 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 23:35:46,938 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 23:35:46,939 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 23:35:46,940 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 23:35:46,940 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 23:35:46,940 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-20 23:35:46,940 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-20 23:35:46,940 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-20 23:35:46,941 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 23:35:46,941 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-20 23:35:46,941 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 23:35:46,941 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 23:35:46,942 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 23:35:46,942 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 23:35:46,942 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:35:46,942 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 23:35:46,943 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 23:35:46,943 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-20 23:35:46,943 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 23:35:46,943 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 23:35:46,943 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 23:35:46,944 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_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5577528c45849c92d31dcecadbfe6524610e7683d1e420d37b6f0ce59c6c59b8 [2021-11-20 23:35:47,225 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 23:35:47,259 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 23:35:47,262 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 23:35:47,263 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 23:35:47,264 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 23:35:47,266 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-3.i [2021-11-20 23:35:47,369 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/data/01602c48d/56f12aa9cdb747d3aa79a5694221c2dd/FLAG7b08fc272 [2021-11-20 23:35:48,023 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 23:35:48,024 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-3.i [2021-11-20 23:35:48,060 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/data/01602c48d/56f12aa9cdb747d3aa79a5694221c2dd/FLAG7b08fc272 [2021-11-20 23:35:48,198 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/data/01602c48d/56f12aa9cdb747d3aa79a5694221c2dd [2021-11-20 23:35:48,201 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 23:35:48,205 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 23:35:48,207 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 23:35:48,207 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 23:35:48,211 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 23:35:48,212 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:35:48" (1/1) ... [2021-11-20 23:35:48,215 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@782b6bcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:48, skipping insertion in model container [2021-11-20 23:35:48,215 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:35:48" (1/1) ... [2021-11-20 23:35:48,224 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 23:35:48,301 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 23:35:48,919 WARN L230 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_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-3.i[33022,33035] [2021-11-20 23:35:49,239 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:35:49,249 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) [2021-11-20 23:35:49,250 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@634c5cab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:49, skipping insertion in model container [2021-11-20 23:35:49,250 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 23:35:49,251 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-20 23:35:49,253 INFO L158 Benchmark]: Toolchain (without parser) took 1046.95ms. Allocated memory was 104.9MB in the beginning and 142.6MB in the end (delta: 37.7MB). Free memory was 71.7MB in the beginning and 96.9MB in the end (delta: -25.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-20 23:35:49,254 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 104.9MB. Free memory was 60.4MB in the beginning and 60.3MB in the end (delta: 92.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 23:35:49,255 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1043.88ms. Allocated memory was 104.9MB in the beginning and 142.6MB in the end (delta: 37.7MB). Free memory was 71.7MB in the beginning and 96.9MB in the end (delta: -25.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-20 23:35:49,257 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 104.9MB. Free memory was 60.4MB in the beginning and 60.3MB in the end (delta: 92.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1043.88ms. Allocated memory was 104.9MB in the beginning and 142.6MB in the end (delta: 37.7MB). Free memory was 71.7MB in the beginning and 96.9MB in the end (delta: -25.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 734]: 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_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5577528c45849c92d31dcecadbfe6524610e7683d1e420d37b6f0ce59c6c59b8 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 23:35:51,465 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 23:35:51,469 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 23:35:51,539 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 23:35:51,539 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 23:35:51,544 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 23:35:51,546 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 23:35:51,550 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 23:35:51,554 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 23:35:51,561 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 23:35:51,563 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 23:35:51,565 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 23:35:51,566 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 23:35:51,568 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 23:35:51,570 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 23:35:51,576 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 23:35:51,578 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 23:35:51,579 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 23:35:51,581 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 23:35:51,591 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 23:35:51,593 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 23:35:51,595 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 23:35:51,597 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 23:35:51,600 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 23:35:51,609 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 23:35:51,609 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 23:35:51,610 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 23:35:51,612 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 23:35:51,612 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 23:35:51,614 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 23:35:51,614 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 23:35:51,615 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 23:35:51,617 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 23:35:51,618 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 23:35:51,620 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 23:35:51,620 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 23:35:51,621 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 23:35:51,621 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 23:35:51,621 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 23:35:51,623 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 23:35:51,624 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 23:35:51,629 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-20 23:35:51,673 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 23:35:51,673 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 23:35:51,674 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 23:35:51,674 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 23:35:51,675 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 23:35:51,675 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 23:35:51,675 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 23:35:51,675 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 23:35:51,677 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 23:35:51,677 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 23:35:51,678 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 23:35:51,678 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 23:35:51,679 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 23:35:51,680 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 23:35:51,680 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 23:35:51,680 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 23:35:51,680 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 23:35:51,681 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 23:35:51,681 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 23:35:51,681 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 23:35:51,681 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-20 23:35:51,681 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-20 23:35:51,681 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-20 23:35:51,682 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 23:35:51,682 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-20 23:35:51,682 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-20 23:35:51,682 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-20 23:35:51,682 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 23:35:51,683 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 23:35:51,683 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 23:35:51,683 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 23:35:51,683 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 23:35:51,684 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:35:51,684 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 23:35:51,684 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 23:35:51,684 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-20 23:35:51,685 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-20 23:35:51,685 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 23:35:51,685 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 23:35:51,685 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_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5577528c45849c92d31dcecadbfe6524610e7683d1e420d37b6f0ce59c6c59b8 [2021-11-20 23:35:52,102 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 23:35:52,123 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 23:35:52,126 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 23:35:52,127 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 23:35:52,128 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 23:35:52,129 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-3.i [2021-11-20 23:35:52,202 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/data/b8bab43d6/20d6484cccf641168865b4cb1a4d1c8a/FLAG3c32d55d5 [2021-11-20 23:35:52,970 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 23:35:52,971 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-3.i [2021-11-20 23:35:52,994 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/data/b8bab43d6/20d6484cccf641168865b4cb1a4d1c8a/FLAG3c32d55d5 [2021-11-20 23:35:53,106 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/data/b8bab43d6/20d6484cccf641168865b4cb1a4d1c8a [2021-11-20 23:35:53,108 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 23:35:53,109 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 23:35:53,110 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 23:35:53,111 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 23:35:53,127 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 23:35:53,128 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:35:53" (1/1) ... [2021-11-20 23:35:53,129 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6136a031 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:53, skipping insertion in model container [2021-11-20 23:35:53,129 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:35:53" (1/1) ... [2021-11-20 23:35:53,136 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 23:35:53,228 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 23:35:53,806 WARN L230 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_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-3.i[33022,33035] [2021-11-20 23:35:54,157 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:35:54,196 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-20 23:35:54,212 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 23:35:54,229 WARN L230 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_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-3.i[33022,33035] [2021-11-20 23:35:54,377 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:35:54,384 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 23:35:54,424 WARN L230 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_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-3.i[33022,33035] [2021-11-20 23:35:54,580 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:35:54,629 INFO L208 MainTranslator]: Completed translation [2021-11-20 23:35:54,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:54 WrapperNode [2021-11-20 23:35:54,630 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 23:35:54,630 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 23:35:54,631 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 23:35:54,631 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 23:35:54,638 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:54" (1/1) ... [2021-11-20 23:35:54,694 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:54" (1/1) ... [2021-11-20 23:35:54,832 INFO L137 Inliner]: procedures = 180, calls = 623, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 2491 [2021-11-20 23:35:54,832 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 23:35:54,833 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 23:35:54,833 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 23:35:54,834 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 23:35:54,842 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:54" (1/1) ... [2021-11-20 23:35:54,842 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:54" (1/1) ... [2021-11-20 23:35:54,858 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:54" (1/1) ... [2021-11-20 23:35:54,859 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:54" (1/1) ... [2021-11-20 23:35:54,952 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:54" (1/1) ... [2021-11-20 23:35:54,999 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:54" (1/1) ... [2021-11-20 23:35:55,012 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:54" (1/1) ... [2021-11-20 23:35:55,037 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 23:35:55,039 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 23:35:55,039 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 23:35:55,040 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 23:35:55,040 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:54" (1/1) ... [2021-11-20 23:35:55,046 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:35:55,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:35:55,066 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 23:35:55,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 23:35:55,108 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-20 23:35:55,109 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2021-11-20 23:35:55,109 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2021-11-20 23:35:55,109 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-20 23:35:55,109 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-20 23:35:55,109 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-20 23:35:55,109 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-20 23:35:55,110 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-20 23:35:55,110 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 23:35:55,110 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 23:35:55,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 23:35:55,110 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 23:35:55,110 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-20 23:35:55,111 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 23:35:55,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 23:35:55,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-20 23:35:55,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-20 23:35:55,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 23:35:55,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 23:35:55,480 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 23:35:55,482 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 23:35:55,486 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-20 23:36:06,448 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 23:36:06,484 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 23:36:06,484 INFO L301 CfgBuilder]: Removed 168 assume(true) statements. [2021-11-20 23:36:06,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:36:06 BoogieIcfgContainer [2021-11-20 23:36:06,491 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 23:36:06,493 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 23:36:06,493 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 23:36:06,496 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 23:36:06,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:35:53" (1/3) ... [2021-11-20 23:36:06,498 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3baff80d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:36:06, skipping insertion in model container [2021-11-20 23:36:06,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:54" (2/3) ... [2021-11-20 23:36:06,498 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3baff80d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:36:06, skipping insertion in model container [2021-11-20 23:36:06,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:36:06" (3/3) ... [2021-11-20 23:36:06,500 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_BER_test10-3.i [2021-11-20 23:36:06,506 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 23:36:06,507 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1193 error locations. [2021-11-20 23:36:06,557 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 23:36:06,564 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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 [2021-11-20 23:36:06,564 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1193 error locations. [2021-11-20 23:36:06,616 INFO L276 IsEmpty]: Start isEmpty. Operand has 2437 states, 1232 states have (on average 2.2280844155844157) internal successors, (2745), 2423 states have internal predecessors, (2745), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2021-11-20 23:36:06,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-20 23:36:06,622 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:06,623 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-20 23:36:06,623 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-20 23:36:06,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:06,629 INFO L85 PathProgramCache]: Analyzing trace with hash 66598, now seen corresponding path program 1 times [2021-11-20 23:36:06,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:36:06,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [566203643] [2021-11-20 23:36:06,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:06,641 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:36:06,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:36:06,644 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:36:06,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-20 23:36:06,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:06,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 23:36:06,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:36:06,962 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 23:36:06,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:36:06,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:36:07,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:36:07,022 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:36:07,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [566203643] [2021-11-20 23:36:07,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [566203643] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:36:07,023 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:36:07,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-20 23:36:07,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34953485] [2021-11-20 23:36:07,026 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:07,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:36:07,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:36:07,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:36:07,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:36:07,104 INFO L87 Difference]: Start difference. First operand has 2437 states, 1232 states have (on average 2.2280844155844157) internal successors, (2745), 2423 states have internal predecessors, (2745), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2021-11-20 23:36:12,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:36:12,686 INFO L93 Difference]: Finished difference Result 3281 states and 3483 transitions. [2021-11-20 23:36:12,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:36:12,688 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2021-11-20 23:36:12,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:36:12,755 INFO L225 Difference]: With dead ends: 3281 [2021-11-20 23:36:12,758 INFO L226 Difference]: Without dead ends: 3279 [2021-11-20 23:36:12,759 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:36:12,763 INFO L933 BasicCegarLoop]: 1665 mSDtfsCounter, 2318 mSDsluCounter, 565 mSDsCounter, 0 mSdLazyCounter, 1661 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2328 SdHoareTripleChecker+Valid, 2230 SdHoareTripleChecker+Invalid, 1684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2021-11-20 23:36:12,765 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2328 Valid, 2230 Invalid, 1684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1661 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2021-11-20 23:36:12,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3279 states. [2021-11-20 23:36:12,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3279 to 2579. [2021-11-20 23:36:12,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2579 states, 1398 states have (on average 2.067238912732475) internal successors, (2890), 2563 states have internal predecessors, (2890), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-20 23:36:12,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2579 states to 2579 states and 2922 transitions. [2021-11-20 23:36:12,940 INFO L78 Accepts]: Start accepts. Automaton has 2579 states and 2922 transitions. Word has length 3 [2021-11-20 23:36:12,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:36:12,940 INFO L470 AbstractCegarLoop]: Abstraction has 2579 states and 2922 transitions. [2021-11-20 23:36:12,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2021-11-20 23:36:12,941 INFO L276 IsEmpty]: Start isEmpty. Operand 2579 states and 2922 transitions. [2021-11-20 23:36:12,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-20 23:36:12,942 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:12,942 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-20 23:36:12,955 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-20 23:36:13,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:36:13,158 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-20 23:36:13,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:13,162 INFO L85 PathProgramCache]: Analyzing trace with hash 66599, now seen corresponding path program 1 times [2021-11-20 23:36:13,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:36:13,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1726398357] [2021-11-20 23:36:13,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:13,164 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:36:13,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:36:13,166 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:36:13,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-20 23:36:13,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:13,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 23:36:13,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:36:13,423 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 23:36:13,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:36:13,439 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:36:13,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:36:13,495 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:36:13,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1726398357] [2021-11-20 23:36:13,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1726398357] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:36:13,496 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:36:13,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-20 23:36:13,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286193415] [2021-11-20 23:36:13,497 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:13,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 23:36:13,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:36:13,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 23:36:13,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:36:13,500 INFO L87 Difference]: Start difference. First operand 2579 states and 2922 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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) [2021-11-20 23:36:24,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:36:24,902 INFO L93 Difference]: Finished difference Result 4057 states and 4519 transitions. [2021-11-20 23:36:24,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 23:36:24,904 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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 3 [2021-11-20 23:36:24,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:36:24,932 INFO L225 Difference]: With dead ends: 4057 [2021-11-20 23:36:24,932 INFO L226 Difference]: Without dead ends: 4057 [2021-11-20 23:36:24,932 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:36:24,935 INFO L933 BasicCegarLoop]: 1776 mSDtfsCounter, 3042 mSDsluCounter, 1932 mSDsCounter, 0 mSdLazyCounter, 2497 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3050 SdHoareTripleChecker+Valid, 3708 SdHoareTripleChecker+Invalid, 2520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 2497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:36:24,936 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3050 Valid, 3708 Invalid, 2520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 2497 Invalid, 0 Unknown, 0 Unchecked, 11.2s Time] [2021-11-20 23:36:24,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4057 states. [2021-11-20 23:36:25,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4057 to 2743. [2021-11-20 23:36:25,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2743 states, 1574 states have (on average 2.053367217280813) internal successors, (3232), 2727 states have internal predecessors, (3232), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-20 23:36:25,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2743 states to 2743 states and 3264 transitions. [2021-11-20 23:36:25,067 INFO L78 Accepts]: Start accepts. Automaton has 2743 states and 3264 transitions. Word has length 3 [2021-11-20 23:36:25,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:36:25,067 INFO L470 AbstractCegarLoop]: Abstraction has 2743 states and 3264 transitions. [2021-11-20 23:36:25,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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) [2021-11-20 23:36:25,068 INFO L276 IsEmpty]: Start isEmpty. Operand 2743 states and 3264 transitions. [2021-11-20 23:36:25,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-20 23:36:25,069 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:25,069 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:36:25,087 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-20 23:36:25,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:36:25,284 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-20 23:36:25,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:25,285 INFO L85 PathProgramCache]: Analyzing trace with hash -305791726, now seen corresponding path program 1 times [2021-11-20 23:36:25,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:36:25,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1281353496] [2021-11-20 23:36:25,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:25,291 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:36:25,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:36:25,292 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:36:25,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-20 23:36:25,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:25,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 23:36:25,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:36:25,559 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 23:36:25,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:36:25,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:36:25,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:36:25,610 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:36:25,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1281353496] [2021-11-20 23:36:25,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1281353496] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:36:25,610 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:36:25,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-20 23:36:25,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962006055] [2021-11-20 23:36:25,611 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:25,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:36:25,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:36:25,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:36:25,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:36:25,613 INFO L87 Difference]: Start difference. First operand 2743 states and 3264 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2021-11-20 23:36:30,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:36:30,011 INFO L93 Difference]: Finished difference Result 3481 states and 4002 transitions. [2021-11-20 23:36:30,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:36:30,013 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2021-11-20 23:36:30,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:36:30,032 INFO L225 Difference]: With dead ends: 3481 [2021-11-20 23:36:30,032 INFO L226 Difference]: Without dead ends: 3481 [2021-11-20 23:36:30,032 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:36:30,034 INFO L933 BasicCegarLoop]: 2347 mSDtfsCounter, 1987 mSDsluCounter, 838 mSDsCounter, 0 mSdLazyCounter, 1577 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1997 SdHoareTripleChecker+Valid, 3185 SdHoareTripleChecker+Invalid, 1679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2021-11-20 23:36:30,034 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1997 Valid, 3185 Invalid, 1679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1577 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2021-11-20 23:36:30,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3481 states. [2021-11-20 23:36:30,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3481 to 2652. [2021-11-20 23:36:30,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2652 states, 1574 states have (on average 1.9739517153748412) internal successors, (3107), 2636 states have internal predecessors, (3107), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-20 23:36:30,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2652 states to 2652 states and 3139 transitions. [2021-11-20 23:36:30,117 INFO L78 Accepts]: Start accepts. Automaton has 2652 states and 3139 transitions. Word has length 8 [2021-11-20 23:36:30,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:36:30,118 INFO L470 AbstractCegarLoop]: Abstraction has 2652 states and 3139 transitions. [2021-11-20 23:36:30,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2021-11-20 23:36:30,119 INFO L276 IsEmpty]: Start isEmpty. Operand 2652 states and 3139 transitions. [2021-11-20 23:36:30,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-20 23:36:30,119 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:30,119 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:36:30,137 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-20 23:36:30,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:36:30,333 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-20 23:36:30,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:30,334 INFO L85 PathProgramCache]: Analyzing trace with hash -305791725, now seen corresponding path program 1 times [2021-11-20 23:36:30,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:36:30,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2012243716] [2021-11-20 23:36:30,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:30,335 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:36:30,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:36:30,338 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:36:30,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-20 23:36:30,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:30,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 23:36:30,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:36:30,578 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 23:36:30,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:36:30,633 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:36:30,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:36:30,732 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:36:30,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2012243716] [2021-11-20 23:36:30,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2012243716] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:36:30,732 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:36:30,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-20 23:36:30,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524052768] [2021-11-20 23:36:30,733 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:30,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 23:36:30,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:36:30,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 23:36:30,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:36:30,734 INFO L87 Difference]: Start difference. First operand 2652 states and 3139 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2021-11-20 23:36:42,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:36:42,851 INFO L93 Difference]: Finished difference Result 3607 states and 4030 transitions. [2021-11-20 23:36:42,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 23:36:42,852 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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 8 [2021-11-20 23:36:42,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:36:42,871 INFO L225 Difference]: With dead ends: 3607 [2021-11-20 23:36:42,872 INFO L226 Difference]: Without dead ends: 3607 [2021-11-20 23:36:42,872 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:36:42,873 INFO L933 BasicCegarLoop]: 2677 mSDtfsCounter, 1441 mSDsluCounter, 2352 mSDsCounter, 0 mSdLazyCounter, 2776 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1447 SdHoareTripleChecker+Valid, 5029 SdHoareTripleChecker+Invalid, 2803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 2776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:36:42,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1447 Valid, 5029 Invalid, 2803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 2776 Invalid, 0 Unknown, 0 Unchecked, 12.0s Time] [2021-11-20 23:36:42,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3607 states. [2021-11-20 23:36:42,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3607 to 2644. [2021-11-20 23:36:42,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2644 states, 1576 states have (on average 1.958756345177665) internal successors, (3087), 2628 states have internal predecessors, (3087), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-20 23:36:42,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2644 states to 2644 states and 3119 transitions. [2021-11-20 23:36:42,945 INFO L78 Accepts]: Start accepts. Automaton has 2644 states and 3119 transitions. Word has length 8 [2021-11-20 23:36:42,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:36:42,946 INFO L470 AbstractCegarLoop]: Abstraction has 2644 states and 3119 transitions. [2021-11-20 23:36:42,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2021-11-20 23:36:42,946 INFO L276 IsEmpty]: Start isEmpty. Operand 2644 states and 3119 transitions. [2021-11-20 23:36:42,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-20 23:36:42,947 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:42,947 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:36:42,964 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-20 23:36:43,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:36:43,160 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr658REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-20 23:36:43,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:43,161 INFO L85 PathProgramCache]: Analyzing trace with hash -690352907, now seen corresponding path program 1 times [2021-11-20 23:36:43,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:36:43,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1514098798] [2021-11-20 23:36:43,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:43,161 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:36:43,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:36:43,162 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:36:43,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-20 23:36:43,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:43,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 23:36:43,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:36:43,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:36:43,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:36:43,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:36:43,444 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:36:43,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1514098798] [2021-11-20 23:36:43,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1514098798] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:36:43,445 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:36:43,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-20 23:36:43,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928231341] [2021-11-20 23:36:43,445 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:43,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 23:36:43,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:36:43,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 23:36:43,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:36:43,446 INFO L87 Difference]: Start difference. First operand 2644 states and 3119 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2021-11-20 23:36:43,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:36:43,522 INFO L93 Difference]: Finished difference Result 2602 states and 3076 transitions. [2021-11-20 23:36:43,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:36:43,523 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 11 [2021-11-20 23:36:43,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:36:43,539 INFO L225 Difference]: With dead ends: 2602 [2021-11-20 23:36:43,539 INFO L226 Difference]: Without dead ends: 2602 [2021-11-20 23:36:43,540 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:36:43,541 INFO L933 BasicCegarLoop]: 2396 mSDtfsCounter, 2384 mSDsluCounter, 1210 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2388 SdHoareTripleChecker+Valid, 3606 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:36:43,541 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2388 Valid, 3606 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 23:36:43,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2602 states. [2021-11-20 23:36:43,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2602 to 2602. [2021-11-20 23:36:43,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2602 states, 1558 states have (on average 1.9537869062901156) internal successors, (3044), 2586 states have internal predecessors, (3044), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-20 23:36:43,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2602 states to 2602 states and 3076 transitions. [2021-11-20 23:36:43,629 INFO L78 Accepts]: Start accepts. Automaton has 2602 states and 3076 transitions. Word has length 11 [2021-11-20 23:36:43,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:36:43,629 INFO L470 AbstractCegarLoop]: Abstraction has 2602 states and 3076 transitions. [2021-11-20 23:36:43,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2021-11-20 23:36:43,631 INFO L276 IsEmpty]: Start isEmpty. Operand 2602 states and 3076 transitions. [2021-11-20 23:36:43,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-20 23:36:43,631 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:43,632 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:36:43,654 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-20 23:36:43,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:36:43,855 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr682REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-20 23:36:43,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:43,857 INFO L85 PathProgramCache]: Analyzing trace with hash -2004126129, now seen corresponding path program 1 times [2021-11-20 23:36:43,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:36:43,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [793265227] [2021-11-20 23:36:43,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:43,858 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:36:43,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:36:43,859 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:36:43,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-20 23:36:44,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:44,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 23:36:44,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:36:44,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:36:44,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:36:44,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:36:44,160 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:36:44,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [793265227] [2021-11-20 23:36:44,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [793265227] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:36:44,161 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:36:44,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-20 23:36:44,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057353974] [2021-11-20 23:36:44,161 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:44,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:36:44,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:36:44,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:36:44,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:36:44,163 INFO L87 Difference]: Start difference. First operand 2602 states and 3076 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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) [2021-11-20 23:36:44,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:36:44,305 INFO L93 Difference]: Finished difference Result 2581 states and 3048 transitions. [2021-11-20 23:36:44,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 23:36:44,305 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 13 [2021-11-20 23:36:44,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:36:44,321 INFO L225 Difference]: With dead ends: 2581 [2021-11-20 23:36:44,321 INFO L226 Difference]: Without dead ends: 2581 [2021-11-20 23:36:44,321 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-20 23:36:44,324 INFO L933 BasicCegarLoop]: 2351 mSDtfsCounter, 2316 mSDsluCounter, 3554 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2320 SdHoareTripleChecker+Valid, 5905 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:36:44,324 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2320 Valid, 5905 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 23:36:44,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2581 states. [2021-11-20 23:36:44,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2581 to 2580. [2021-11-20 23:36:44,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2580 states, 1550 states have (on average 1.9451612903225806) internal successors, (3015), 2564 states have internal predecessors, (3015), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-20 23:36:44,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2580 states to 2580 states and 3047 transitions. [2021-11-20 23:36:44,386 INFO L78 Accepts]: Start accepts. Automaton has 2580 states and 3047 transitions. Word has length 13 [2021-11-20 23:36:44,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:36:44,386 INFO L470 AbstractCegarLoop]: Abstraction has 2580 states and 3047 transitions. [2021-11-20 23:36:44,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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) [2021-11-20 23:36:44,387 INFO L276 IsEmpty]: Start isEmpty. Operand 2580 states and 3047 transitions. [2021-11-20 23:36:44,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 23:36:44,388 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:44,388 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:36:44,401 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-11-20 23:36:44,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:36:44,601 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-20 23:36:44,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:44,601 INFO L85 PathProgramCache]: Analyzing trace with hash 445820063, now seen corresponding path program 1 times [2021-11-20 23:36:44,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:36:44,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1808066804] [2021-11-20 23:36:44,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:44,602 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:36:44,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:36:44,603 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:36:44,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-20 23:36:44,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:44,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 23:36:44,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:36:44,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:36:44,863 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:36:44,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:36:44,910 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:36:44,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1808066804] [2021-11-20 23:36:44,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1808066804] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:36:44,911 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:36:44,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-20 23:36:44,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041265480] [2021-11-20 23:36:44,911 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:44,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 23:36:44,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:36:44,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 23:36:44,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:36:44,913 INFO L87 Difference]: Start difference. First operand 2580 states and 3047 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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) [2021-11-20 23:36:44,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:36:44,989 INFO L93 Difference]: Finished difference Result 4234 states and 4857 transitions. [2021-11-20 23:36:44,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:36:44,994 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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 20 [2021-11-20 23:36:44,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:36:45,030 INFO L225 Difference]: With dead ends: 4234 [2021-11-20 23:36:45,030 INFO L226 Difference]: Without dead ends: 4234 [2021-11-20 23:36:45,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:36:45,032 INFO L933 BasicCegarLoop]: 4082 mSDtfsCounter, 2277 mSDsluCounter, 3608 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2287 SdHoareTripleChecker+Valid, 7690 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:36:45,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2287 Valid, 7690 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 23:36:45,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4234 states. [2021-11-20 23:36:45,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4234 to 2538. [2021-11-20 23:36:45,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2538 states, 1532 states have (on average 1.9399477806788512) internal successors, (2972), 2522 states have internal predecessors, (2972), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-20 23:36:45,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2538 states to 2538 states and 3004 transitions. [2021-11-20 23:36:45,107 INFO L78 Accepts]: Start accepts. Automaton has 2538 states and 3004 transitions. Word has length 20 [2021-11-20 23:36:45,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:36:45,108 INFO L470 AbstractCegarLoop]: Abstraction has 2538 states and 3004 transitions. [2021-11-20 23:36:45,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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) [2021-11-20 23:36:45,108 INFO L276 IsEmpty]: Start isEmpty. Operand 2538 states and 3004 transitions. [2021-11-20 23:36:45,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 23:36:45,110 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:45,110 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:36:45,126 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-20 23:36:45,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:36:45,324 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr334REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-20 23:36:45,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:45,325 INFO L85 PathProgramCache]: Analyzing trace with hash 591123743, now seen corresponding path program 1 times [2021-11-20 23:36:45,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:36:45,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [998066724] [2021-11-20 23:36:45,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:45,331 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:36:45,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:36:45,332 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:36:45,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-20 23:36:45,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:45,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 23:36:45,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:36:45,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:36:45,608 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:36:45,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:36:45,648 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:36:45,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [998066724] [2021-11-20 23:36:45,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [998066724] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:36:45,649 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:36:45,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-20 23:36:45,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409898972] [2021-11-20 23:36:45,649 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:45,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 23:36:45,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:36:45,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 23:36:45,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:36:45,651 INFO L87 Difference]: Start difference. First operand 2538 states and 3004 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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) [2021-11-20 23:36:45,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:36:45,747 INFO L93 Difference]: Finished difference Result 4107 states and 4676 transitions. [2021-11-20 23:36:45,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:36:45,748 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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 20 [2021-11-20 23:36:45,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:36:45,760 INFO L225 Difference]: With dead ends: 4107 [2021-11-20 23:36:45,760 INFO L226 Difference]: Without dead ends: 4107 [2021-11-20 23:36:45,761 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:36:45,761 INFO L933 BasicCegarLoop]: 3767 mSDtfsCounter, 4468 mSDsluCounter, 1754 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4478 SdHoareTripleChecker+Valid, 5521 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:36:45,762 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4478 Valid, 5521 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 23:36:45,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4107 states. [2021-11-20 23:36:45,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4107 to 2460. [2021-11-20 23:36:45,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2460 states, 1478 states have (on average 1.9235453315290933) internal successors, (2843), 2444 states have internal predecessors, (2843), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-20 23:36:45,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2460 states to 2460 states and 2875 transitions. [2021-11-20 23:36:45,822 INFO L78 Accepts]: Start accepts. Automaton has 2460 states and 2875 transitions. Word has length 20 [2021-11-20 23:36:45,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:36:45,822 INFO L470 AbstractCegarLoop]: Abstraction has 2460 states and 2875 transitions. [2021-11-20 23:36:45,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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) [2021-11-20 23:36:45,823 INFO L276 IsEmpty]: Start isEmpty. Operand 2460 states and 2875 transitions. [2021-11-20 23:36:45,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-20 23:36:45,824 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:45,824 INFO L514 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] [2021-11-20 23:36:45,842 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-20 23:36:46,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:36:46,038 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr40REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-20 23:36:46,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:46,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1063651591, now seen corresponding path program 1 times [2021-11-20 23:36:46,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:36:46,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1257674038] [2021-11-20 23:36:46,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:46,039 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:36:46,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:36:46,041 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:36:46,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-20 23:36:46,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:46,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 23:36:46,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:36:46,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:36:46,360 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:36:46,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:36:46,411 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:36:46,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1257674038] [2021-11-20 23:36:46,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1257674038] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:36:46,411 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:36:46,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-20 23:36:46,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300246259] [2021-11-20 23:36:46,411 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:46,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:36:46,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:36:46,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:36:46,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:36:46,413 INFO L87 Difference]: Start difference. First operand 2460 states and 2875 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 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) [2021-11-20 23:36:46,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:36:46,575 INFO L93 Difference]: Finished difference Result 4093 states and 4657 transitions. [2021-11-20 23:36:46,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 23:36:46,576 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 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 22 [2021-11-20 23:36:46,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:36:46,591 INFO L225 Difference]: With dead ends: 4093 [2021-11-20 23:36:46,592 INFO L226 Difference]: Without dead ends: 4093 [2021-11-20 23:36:46,592 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-20 23:36:46,593 INFO L933 BasicCegarLoop]: 3728 mSDtfsCounter, 4400 mSDsluCounter, 5482 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4410 SdHoareTripleChecker+Valid, 9210 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:36:46,593 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4410 Valid, 9210 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 23:36:46,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4093 states. [2021-11-20 23:36:46,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4093 to 2438. [2021-11-20 23:36:46,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2438 states, 1470 states have (on average 1.9142857142857144) internal successors, (2814), 2422 states have internal predecessors, (2814), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-20 23:36:46,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2438 states to 2438 states and 2846 transitions. [2021-11-20 23:36:46,655 INFO L78 Accepts]: Start accepts. Automaton has 2438 states and 2846 transitions. Word has length 22 [2021-11-20 23:36:46,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:36:46,656 INFO L470 AbstractCegarLoop]: Abstraction has 2438 states and 2846 transitions. [2021-11-20 23:36:46,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 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) [2021-11-20 23:36:46,656 INFO L276 IsEmpty]: Start isEmpty. Operand 2438 states and 2846 transitions. [2021-11-20 23:36:46,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-20 23:36:46,657 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:46,657 INFO L514 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] [2021-11-20 23:36:46,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-20 23:36:46,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:36:46,871 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr359REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-20 23:36:46,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:46,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1134259450, now seen corresponding path program 1 times [2021-11-20 23:36:46,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:36:46,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [921752192] [2021-11-20 23:36:46,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:46,872 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:36:46,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:36:46,873 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:36:46,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-20 23:36:47,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:47,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 23:36:47,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:36:47,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:36:47,133 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:36:47,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:36:47,188 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:36:47,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [921752192] [2021-11-20 23:36:47,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [921752192] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:36:47,189 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:36:47,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-20 23:36:47,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674815553] [2021-11-20 23:36:47,190 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:47,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:36:47,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:36:47,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:36:47,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:36:47,191 INFO L87 Difference]: Start difference. First operand 2438 states and 2846 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 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) [2021-11-20 23:36:47,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:36:47,346 INFO L93 Difference]: Finished difference Result 4028 states and 4534 transitions. [2021-11-20 23:36:47,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 23:36:47,347 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 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 22 [2021-11-20 23:36:47,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:36:47,358 INFO L225 Difference]: With dead ends: 4028 [2021-11-20 23:36:47,358 INFO L226 Difference]: Without dead ends: 4028 [2021-11-20 23:36:47,359 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-20 23:36:47,360 INFO L933 BasicCegarLoop]: 3874 mSDtfsCounter, 2170 mSDsluCounter, 7305 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2180 SdHoareTripleChecker+Valid, 11179 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:36:47,360 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2180 Valid, 11179 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 23:36:47,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4028 states. [2021-11-20 23:36:47,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4028 to 2400. [2021-11-20 23:36:47,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2400 states, 1446 states have (on average 1.8858921161825726) internal successors, (2727), 2384 states have internal predecessors, (2727), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-20 23:36:47,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2400 states to 2400 states and 2759 transitions. [2021-11-20 23:36:47,427 INFO L78 Accepts]: Start accepts. Automaton has 2400 states and 2759 transitions. Word has length 22 [2021-11-20 23:36:47,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:36:47,427 INFO L470 AbstractCegarLoop]: Abstraction has 2400 states and 2759 transitions. [2021-11-20 23:36:47,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 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) [2021-11-20 23:36:47,427 INFO L276 IsEmpty]: Start isEmpty. Operand 2400 states and 2759 transitions. [2021-11-20 23:36:47,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-20 23:36:47,429 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:47,429 INFO L514 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] [2021-11-20 23:36:47,448 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-20 23:36:47,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:36:47,648 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr696REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-20 23:36:47,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:47,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1056519613, now seen corresponding path program 1 times [2021-11-20 23:36:47,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:36:47,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1264811750] [2021-11-20 23:36:47,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:47,650 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:36:47,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:36:47,651 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:36:47,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-20 23:36:47,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:47,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 23:36:47,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:36:47,888 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 23:36:48,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:36:48,004 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:36:48,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:36:48,153 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:36:48,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1264811750] [2021-11-20 23:36:48,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1264811750] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:36:48,154 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:36:48,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-20 23:36:48,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337426136] [2021-11-20 23:36:48,154 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:48,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 23:36:48,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:36:48,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 23:36:48,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:36:48,156 INFO L87 Difference]: Start difference. First operand 2400 states and 2759 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 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) [2021-11-20 23:36:53,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:36:53,189 INFO L93 Difference]: Finished difference Result 3021 states and 3299 transitions. [2021-11-20 23:36:53,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 23:36:53,189 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 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 27 [2021-11-20 23:36:53,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:36:53,197 INFO L225 Difference]: With dead ends: 3021 [2021-11-20 23:36:53,198 INFO L226 Difference]: Without dead ends: 3021 [2021-11-20 23:36:53,198 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:36:53,199 INFO L933 BasicCegarLoop]: 1514 mSDtfsCounter, 3081 mSDsluCounter, 1277 mSDsCounter, 0 mSdLazyCounter, 2065 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3087 SdHoareTripleChecker+Valid, 2791 SdHoareTripleChecker+Invalid, 2086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 2065 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:36:53,199 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3087 Valid, 2791 Invalid, 2086 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 2065 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2021-11-20 23:36:53,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3021 states. [2021-11-20 23:36:53,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3021 to 2396. [2021-11-20 23:36:53,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2396 states, 1446 states have (on average 1.8831258644536653) internal successors, (2723), 2380 states have internal predecessors, (2723), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-20 23:36:53,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2396 states to 2396 states and 2755 transitions. [2021-11-20 23:36:53,247 INFO L78 Accepts]: Start accepts. Automaton has 2396 states and 2755 transitions. Word has length 27 [2021-11-20 23:36:53,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:36:53,248 INFO L470 AbstractCegarLoop]: Abstraction has 2396 states and 2755 transitions. [2021-11-20 23:36:53,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 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) [2021-11-20 23:36:53,249 INFO L276 IsEmpty]: Start isEmpty. Operand 2396 states and 2755 transitions. [2021-11-20 23:36:53,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-20 23:36:53,250 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:53,250 INFO L514 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] [2021-11-20 23:36:53,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-20 23:36:53,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:36:53,464 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr697REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-20 23:36:53,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:53,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1056519614, now seen corresponding path program 1 times [2021-11-20 23:36:53,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:36:53,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1944080072] [2021-11-20 23:36:53,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:53,465 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:36:53,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:36:53,466 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:36:53,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-20 23:36:53,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:53,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 23:36:53,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:36:53,732 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 23:36:54,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:36:54,035 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:36:54,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:36:54,554 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:36:54,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1944080072] [2021-11-20 23:36:54,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1944080072] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:36:54,555 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:36:54,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-20 23:36:54,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698938920] [2021-11-20 23:36:54,555 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:54,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 23:36:54,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:36:54,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 23:36:54,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 23:36:54,558 INFO L87 Difference]: Start difference. First operand 2396 states and 2755 transitions. Second operand has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 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) [2021-11-20 23:37:08,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:08,872 INFO L93 Difference]: Finished difference Result 3571 states and 3924 transitions. [2021-11-20 23:37:08,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 23:37:08,873 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 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 27 [2021-11-20 23:37:08,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:08,880 INFO L225 Difference]: With dead ends: 3571 [2021-11-20 23:37:08,880 INFO L226 Difference]: Without dead ends: 3571 [2021-11-20 23:37:08,880 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:37:08,881 INFO L933 BasicCegarLoop]: 1575 mSDtfsCounter, 6054 mSDsluCounter, 2766 mSDsCounter, 0 mSdLazyCounter, 3237 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6054 SdHoareTripleChecker+Valid, 4341 SdHoareTripleChecker+Invalid, 3266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 3237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:08,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6054 Valid, 4341 Invalid, 3266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 3237 Invalid, 0 Unknown, 0 Unchecked, 14.1s Time] [2021-11-20 23:37:08,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3571 states. [2021-11-20 23:37:08,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3571 to 2429. [2021-11-20 23:37:08,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2429 states, 1480 states have (on average 1.864864864864865) internal successors, (2760), 2413 states have internal predecessors, (2760), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-20 23:37:08,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2429 states to 2429 states and 2792 transitions. [2021-11-20 23:37:08,921 INFO L78 Accepts]: Start accepts. Automaton has 2429 states and 2792 transitions. Word has length 27 [2021-11-20 23:37:08,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:08,921 INFO L470 AbstractCegarLoop]: Abstraction has 2429 states and 2792 transitions. [2021-11-20 23:37:08,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 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) [2021-11-20 23:37:08,921 INFO L276 IsEmpty]: Start isEmpty. Operand 2429 states and 2792 transitions. [2021-11-20 23:37:08,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-20 23:37:08,923 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:08,923 INFO L514 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] [2021-11-20 23:37:08,949 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-11-20 23:37:09,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:37:09,134 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr54REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-20 23:37:09,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:09,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1781128551, now seen corresponding path program 1 times [2021-11-20 23:37:09,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:37:09,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1055535714] [2021-11-20 23:37:09,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:09,136 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:37:09,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:37:09,137 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:37:09,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-20 23:37:09,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:09,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 23:37:09,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:37:09,402 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 23:37:09,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:09,552 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:37:09,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:09,682 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:37:09,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1055535714] [2021-11-20 23:37:09,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1055535714] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:09,682 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:09,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-20 23:37:09,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622849325] [2021-11-20 23:37:09,683 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:09,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 23:37:09,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:37:09,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 23:37:09,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:37:09,684 INFO L87 Difference]: Start difference. First operand 2429 states and 2792 transitions. Second operand has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:16,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:16,775 INFO L93 Difference]: Finished difference Result 4682 states and 5248 transitions. [2021-11-20 23:37:16,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 23:37:16,783 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-11-20 23:37:16,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:16,792 INFO L225 Difference]: With dead ends: 4682 [2021-11-20 23:37:16,792 INFO L226 Difference]: Without dead ends: 4682 [2021-11-20 23:37:16,792 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:37:16,793 INFO L933 BasicCegarLoop]: 2684 mSDtfsCounter, 4263 mSDsluCounter, 2372 mSDsCounter, 0 mSdLazyCounter, 3162 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4270 SdHoareTripleChecker+Valid, 5056 SdHoareTripleChecker+Invalid, 3205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 3162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:16,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4270 Valid, 5056 Invalid, 3205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 3162 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2021-11-20 23:37:16,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4682 states. [2021-11-20 23:37:16,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4682 to 2425. [2021-11-20 23:37:16,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2425 states, 1480 states have (on average 1.8621621621621622) internal successors, (2756), 2409 states have internal predecessors, (2756), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-20 23:37:16,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2425 states to 2425 states and 2788 transitions. [2021-11-20 23:37:16,842 INFO L78 Accepts]: Start accepts. Automaton has 2425 states and 2788 transitions. Word has length 36 [2021-11-20 23:37:16,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:16,843 INFO L470 AbstractCegarLoop]: Abstraction has 2425 states and 2788 transitions. [2021-11-20 23:37:16,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:16,843 INFO L276 IsEmpty]: Start isEmpty. Operand 2425 states and 2788 transitions. [2021-11-20 23:37:16,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-20 23:37:16,844 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:16,844 INFO L514 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] [2021-11-20 23:37:16,862 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-20 23:37:17,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:37:17,058 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr55REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-20 23:37:17,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:17,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1781128552, now seen corresponding path program 1 times [2021-11-20 23:37:17,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:37:17,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1106474671] [2021-11-20 23:37:17,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:17,060 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:37:17,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:37:17,062 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:37:17,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-20 23:37:17,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:17,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 23:37:17,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:37:17,404 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 23:37:17,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:17,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:37:18,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:18,274 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:37:18,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1106474671] [2021-11-20 23:37:18,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1106474671] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:18,274 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:18,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-20 23:37:18,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448440778] [2021-11-20 23:37:18,275 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:18,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 23:37:18,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:37:18,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 23:37:18,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 23:37:18,276 INFO L87 Difference]: Start difference. First operand 2425 states and 2788 transitions. Second operand has 6 states, 5 states have (on average 13.6) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:39,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:39,524 INFO L93 Difference]: Finished difference Result 4594 states and 5036 transitions. [2021-11-20 23:37:39,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 23:37:39,525 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.6) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-11-20 23:37:39,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:39,531 INFO L225 Difference]: With dead ends: 4594 [2021-11-20 23:37:39,531 INFO L226 Difference]: Without dead ends: 4594 [2021-11-20 23:37:39,531 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:37:39,532 INFO L933 BasicCegarLoop]: 3274 mSDtfsCounter, 4252 mSDsluCounter, 4202 mSDsCounter, 0 mSdLazyCounter, 4879 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4257 SdHoareTripleChecker+Valid, 7476 SdHoareTripleChecker+Invalid, 4908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 4879 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:39,533 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4257 Valid, 7476 Invalid, 4908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 4879 Invalid, 0 Unknown, 0 Unchecked, 21.0s Time] [2021-11-20 23:37:39,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4594 states. [2021-11-20 23:37:39,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4594 to 2421. [2021-11-20 23:37:39,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2421 states, 1480 states have (on average 1.8594594594594596) internal successors, (2752), 2405 states have internal predecessors, (2752), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-20 23:37:39,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2421 states to 2421 states and 2784 transitions. [2021-11-20 23:37:39,580 INFO L78 Accepts]: Start accepts. Automaton has 2421 states and 2784 transitions. Word has length 36 [2021-11-20 23:37:39,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:39,580 INFO L470 AbstractCegarLoop]: Abstraction has 2421 states and 2784 transitions. [2021-11-20 23:37:39,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.6) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:39,581 INFO L276 IsEmpty]: Start isEmpty. Operand 2421 states and 2784 transitions. [2021-11-20 23:37:39,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-20 23:37:39,581 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:39,581 INFO L514 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] [2021-11-20 23:37:39,613 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-20 23:37:39,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:37:39,796 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr372REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-20 23:37:39,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:39,796 INFO L85 PathProgramCache]: Analyzing trace with hash -526454297, now seen corresponding path program 1 times [2021-11-20 23:37:39,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:37:39,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1246675677] [2021-11-20 23:37:39,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:39,797 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:37:39,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:37:39,798 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:37:39,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-20 23:37:39,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:39,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 23:37:39,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:37:40,019 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 23:37:40,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:40,149 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:37:40,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:40,283 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:37:40,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1246675677] [2021-11-20 23:37:40,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1246675677] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:40,284 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:40,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-20 23:37:40,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921184424] [2021-11-20 23:37:40,284 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:40,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 23:37:40,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:37:40,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 23:37:40,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:37:40,285 INFO L87 Difference]: Start difference. First operand 2421 states and 2784 transitions. Second operand has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:48,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:48,004 INFO L93 Difference]: Finished difference Result 5038 states and 5620 transitions. [2021-11-20 23:37:48,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 23:37:48,005 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-11-20 23:37:48,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:48,014 INFO L225 Difference]: With dead ends: 5038 [2021-11-20 23:37:48,014 INFO L226 Difference]: Without dead ends: 5038 [2021-11-20 23:37:48,014 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:37:48,015 INFO L933 BasicCegarLoop]: 2521 mSDtfsCounter, 4829 mSDsluCounter, 2561 mSDsCounter, 0 mSdLazyCounter, 3342 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4839 SdHoareTripleChecker+Valid, 5082 SdHoareTripleChecker+Invalid, 3393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 3342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:48,016 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4839 Valid, 5082 Invalid, 3393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 3342 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2021-11-20 23:37:48,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5038 states. [2021-11-20 23:37:48,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5038 to 2418. [2021-11-20 23:37:48,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2418 states, 1480 states have (on average 1.852027027027027) internal successors, (2741), 2402 states have internal predecessors, (2741), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-20 23:37:48,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2418 states to 2418 states and 2773 transitions. [2021-11-20 23:37:48,068 INFO L78 Accepts]: Start accepts. Automaton has 2418 states and 2773 transitions. Word has length 36 [2021-11-20 23:37:48,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:48,068 INFO L470 AbstractCegarLoop]: Abstraction has 2418 states and 2773 transitions. [2021-11-20 23:37:48,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:48,069 INFO L276 IsEmpty]: Start isEmpty. Operand 2418 states and 2773 transitions. [2021-11-20 23:37:48,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-20 23:37:48,070 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:48,070 INFO L514 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] [2021-11-20 23:37:48,083 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-11-20 23:37:48,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:37:48,284 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr373REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-20 23:37:48,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:48,284 INFO L85 PathProgramCache]: Analyzing trace with hash -526454296, now seen corresponding path program 1 times [2021-11-20 23:37:48,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:37:48,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1039867959] [2021-11-20 23:37:48,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:48,285 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:37:48,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:37:48,286 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:37:48,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-20 23:37:48,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:48,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 23:37:48,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:37:48,540 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 23:37:48,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:48,802 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:37:49,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:49,222 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:37:49,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1039867959] [2021-11-20 23:37:49,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1039867959] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:49,222 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:49,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-20 23:37:49,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795641121] [2021-11-20 23:37:49,222 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:49,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 23:37:49,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:37:49,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 23:37:49,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 23:37:49,224 INFO L87 Difference]: Start difference. First operand 2418 states and 2773 transitions. Second operand has 6 states, 5 states have (on average 13.6) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:38:12,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:38:12,295 INFO L93 Difference]: Finished difference Result 5170 states and 5700 transitions. [2021-11-20 23:38:12,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 23:38:12,296 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.6) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-11-20 23:38:12,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:38:12,302 INFO L225 Difference]: With dead ends: 5170 [2021-11-20 23:38:12,302 INFO L226 Difference]: Without dead ends: 5170 [2021-11-20 23:38:12,303 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:38:12,303 INFO L933 BasicCegarLoop]: 2791 mSDtfsCounter, 5159 mSDsluCounter, 4960 mSDsCounter, 0 mSdLazyCounter, 5140 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5164 SdHoareTripleChecker+Valid, 7751 SdHoareTripleChecker+Invalid, 5169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 5140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.8s IncrementalHoareTripleChecker+Time [2021-11-20 23:38:12,304 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5164 Valid, 7751 Invalid, 5169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 5140 Invalid, 0 Unknown, 0 Unchecked, 22.8s Time] [2021-11-20 23:38:12,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5170 states. [2021-11-20 23:38:12,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5170 to 2418. [2021-11-20 23:38:12,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2418 states, 1480 states have (on average 1.8493243243243243) internal successors, (2737), 2402 states have internal predecessors, (2737), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-20 23:38:12,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2418 states to 2418 states and 2769 transitions. [2021-11-20 23:38:12,344 INFO L78 Accepts]: Start accepts. Automaton has 2418 states and 2769 transitions. Word has length 36 [2021-11-20 23:38:12,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:38:12,345 INFO L470 AbstractCegarLoop]: Abstraction has 2418 states and 2769 transitions. [2021-11-20 23:38:12,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.6) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:38:12,345 INFO L276 IsEmpty]: Start isEmpty. Operand 2418 states and 2769 transitions. [2021-11-20 23:38:12,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-20 23:38:12,346 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:38:12,346 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:38:12,373 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2021-11-20 23:38:12,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:38:12,558 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr704REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-20 23:38:12,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:38:12,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1782356879, now seen corresponding path program 1 times [2021-11-20 23:38:12,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:38:12,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [981246616] [2021-11-20 23:38:12,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:38:12,559 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:38:12,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:38:12,560 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:38:12,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-20 23:38:12,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:38:12,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 23:38:12,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:38:12,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:38:12,822 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:38:12,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:38:12,898 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:38:12,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [981246616] [2021-11-20 23:38:12,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [981246616] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:38:12,898 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:38:12,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-20 23:38:12,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500882896] [2021-11-20 23:38:12,899 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:38:12,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 23:38:12,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:38:12,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 23:38:12,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:38:12,900 INFO L87 Difference]: Start difference. First operand 2418 states and 2769 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 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) [2021-11-20 23:38:12,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:38:12,954 INFO L93 Difference]: Finished difference Result 2412 states and 2755 transitions. [2021-11-20 23:38:12,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 23:38:12,955 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-11-20 23:38:12,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:38:12,957 INFO L225 Difference]: With dead ends: 2412 [2021-11-20 23:38:12,957 INFO L226 Difference]: Without dead ends: 2412 [2021-11-20 23:38:12,957 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:38:12,958 INFO L933 BasicCegarLoop]: 2181 mSDtfsCounter, 1145 mSDsluCounter, 3204 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1149 SdHoareTripleChecker+Valid, 5385 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:38:12,958 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1149 Valid, 5385 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 23:38:12,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2412 states. [2021-11-20 23:38:12,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2412 to 2412. [2021-11-20 23:38:12,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2412 states, 1474 states have (on average 1.8473541383989145) internal successors, (2723), 2396 states have internal predecessors, (2723), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-20 23:38:12,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2412 states to 2412 states and 2755 transitions. [2021-11-20 23:38:12,989 INFO L78 Accepts]: Start accepts. Automaton has 2412 states and 2755 transitions. Word has length 40 [2021-11-20 23:38:12,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:38:12,989 INFO L470 AbstractCegarLoop]: Abstraction has 2412 states and 2755 transitions. [2021-11-20 23:38:12,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 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) [2021-11-20 23:38:12,989 INFO L276 IsEmpty]: Start isEmpty. Operand 2412 states and 2755 transitions. [2021-11-20 23:38:12,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-20 23:38:12,990 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:38:12,990 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:38:13,005 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-20 23:38:13,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:38:13,202 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr704REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-20 23:38:13,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:38:13,202 INFO L85 PathProgramCache]: Analyzing trace with hash -263031357, now seen corresponding path program 1 times [2021-11-20 23:38:13,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:38:13,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [462922124] [2021-11-20 23:38:13,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:38:13,203 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:38:13,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:38:13,204 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:38:13,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-20 23:38:13,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:38:13,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 23:38:13,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:38:13,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:38:13,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:38:14,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:38:14,044 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:38:14,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [462922124] [2021-11-20 23:38:14,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [462922124] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:38:14,045 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:38:14,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-20 23:38:14,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125072011] [2021-11-20 23:38:14,045 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:38:14,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:38:14,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:38:14,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:38:14,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:38:14,046 INFO L87 Difference]: Start difference. First operand 2412 states and 2755 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2021-11-20 23:38:14,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:38:14,343 INFO L93 Difference]: Finished difference Result 3930 states and 4407 transitions. [2021-11-20 23:38:14,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:38:14,343 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-11-20 23:38:14,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:38:14,347 INFO L225 Difference]: With dead ends: 3930 [2021-11-20 23:38:14,347 INFO L226 Difference]: Without dead ends: 3930 [2021-11-20 23:38:14,347 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:38:14,348 INFO L933 BasicCegarLoop]: 2269 mSDtfsCounter, 1564 mSDsluCounter, 2027 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1573 SdHoareTripleChecker+Valid, 4296 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 23:38:14,348 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1573 Valid, 4296 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 23:38:14,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3930 states. [2021-11-20 23:38:14,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3930 to 3131. [2021-11-20 23:38:14,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3131 states, 2189 states have (on average 1.814070351758794) internal successors, (3971), 3108 states have internal predecessors, (3971), 23 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (23), 20 states have call predecessors, (23), 23 states have call successors, (23) [2021-11-20 23:38:14,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3131 states to 3131 states and 4017 transitions. [2021-11-20 23:38:14,396 INFO L78 Accepts]: Start accepts. Automaton has 3131 states and 4017 transitions. Word has length 48 [2021-11-20 23:38:14,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:38:14,396 INFO L470 AbstractCegarLoop]: Abstraction has 3131 states and 4017 transitions. [2021-11-20 23:38:14,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2021-11-20 23:38:14,397 INFO L276 IsEmpty]: Start isEmpty. Operand 3131 states and 4017 transitions. [2021-11-20 23:38:14,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-20 23:38:14,398 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:38:14,398 INFO L514 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] [2021-11-20 23:38:14,420 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-20 23:38:14,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:38:14,621 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr437REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-20 23:38:14,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:38:14,621 INFO L85 PathProgramCache]: Analyzing trace with hash -435335443, now seen corresponding path program 1 times [2021-11-20 23:38:14,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:38:14,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [205322145] [2021-11-20 23:38:14,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:38:14,622 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:38:14,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:38:14,623 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:38:14,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-20 23:38:14,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:38:14,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 23:38:14,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:38:14,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:38:14,933 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:38:15,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:38:15,043 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:38:15,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [205322145] [2021-11-20 23:38:15,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [205322145] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:38:15,043 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:38:15,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-20 23:38:15,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350710187] [2021-11-20 23:38:15,044 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:38:15,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 23:38:15,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:38:15,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 23:38:15,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:38:15,049 INFO L87 Difference]: Start difference. First operand 3131 states and 4017 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:38:15,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:38:15,142 INFO L93 Difference]: Finished difference Result 4459 states and 5419 transitions. [2021-11-20 23:38:15,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 23:38:15,143 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-20 23:38:15,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:38:15,149 INFO L225 Difference]: With dead ends: 4459 [2021-11-20 23:38:15,149 INFO L226 Difference]: Without dead ends: 4459 [2021-11-20 23:38:15,149 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:38:15,151 INFO L933 BasicCegarLoop]: 3642 mSDtfsCounter, 2139 mSDsluCounter, 5125 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2149 SdHoareTripleChecker+Valid, 8767 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:38:15,151 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2149 Valid, 8767 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 23:38:15,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4459 states. [2021-11-20 23:38:15,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4459 to 3107. [2021-11-20 23:38:15,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3107 states, 2165 states have (on average 1.8157043879907622) internal successors, (3931), 3084 states have internal predecessors, (3931), 23 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (23), 20 states have call predecessors, (23), 23 states have call successors, (23) [2021-11-20 23:38:15,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3107 states to 3107 states and 3977 transitions. [2021-11-20 23:38:15,227 INFO L78 Accepts]: Start accepts. Automaton has 3107 states and 3977 transitions. Word has length 51 [2021-11-20 23:38:15,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:38:15,228 INFO L470 AbstractCegarLoop]: Abstraction has 3107 states and 3977 transitions. [2021-11-20 23:38:15,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:38:15,228 INFO L276 IsEmpty]: Start isEmpty. Operand 3107 states and 3977 transitions. [2021-11-20 23:38:15,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-20 23:38:15,229 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:38:15,229 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:38:15,249 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-20 23:38:15,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:38:15,442 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr73REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-20 23:38:15,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:38:15,442 INFO L85 PathProgramCache]: Analyzing trace with hash -273786554, now seen corresponding path program 1 times [2021-11-20 23:38:15,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:38:15,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [509814235] [2021-11-20 23:38:15,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:38:15,443 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:38:15,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:38:15,443 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:38:15,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-20 23:38:15,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:38:15,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 23:38:15,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:38:15,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:38:15,845 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:38:15,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:38:15,965 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:38:15,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [509814235] [2021-11-20 23:38:15,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [509814235] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:38:15,965 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:38:15,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-20 23:38:15,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011694246] [2021-11-20 23:38:15,965 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:38:15,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 23:38:15,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:38:15,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 23:38:15,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:38:15,966 INFO L87 Difference]: Start difference. First operand 3107 states and 3977 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:38:16,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:38:16,063 INFO L93 Difference]: Finished difference Result 4204 states and 4917 transitions. [2021-11-20 23:38:16,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 23:38:16,063 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-11-20 23:38:16,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:38:16,069 INFO L225 Difference]: With dead ends: 4204 [2021-11-20 23:38:16,069 INFO L226 Difference]: Without dead ends: 4204 [2021-11-20 23:38:16,070 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:38:16,070 INFO L933 BasicCegarLoop]: 3683 mSDtfsCounter, 2130 mSDsluCounter, 5216 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2140 SdHoareTripleChecker+Valid, 8899 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:38:16,071 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2140 Valid, 8899 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 23:38:16,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4204 states. [2021-11-20 23:38:16,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4204 to 3095. [2021-11-20 23:38:16,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3095 states, 2153 states have (on average 1.8165350673478866) internal successors, (3911), 3072 states have internal predecessors, (3911), 23 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (23), 20 states have call predecessors, (23), 23 states have call successors, (23) [2021-11-20 23:38:16,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3095 states to 3095 states and 3957 transitions. [2021-11-20 23:38:16,124 INFO L78 Accepts]: Start accepts. Automaton has 3095 states and 3957 transitions. Word has length 54 [2021-11-20 23:38:16,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:38:16,124 INFO L470 AbstractCegarLoop]: Abstraction has 3095 states and 3957 transitions. [2021-11-20 23:38:16,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:38:16,124 INFO L276 IsEmpty]: Start isEmpty. Operand 3095 states and 3957 transitions. [2021-11-20 23:38:16,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-20 23:38:16,125 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:38:16,125 INFO L514 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] [2021-11-20 23:38:16,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-20 23:38:16,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:38:16,344 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-20 23:38:16,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:38:16,345 INFO L85 PathProgramCache]: Analyzing trace with hash -345082942, now seen corresponding path program 1 times [2021-11-20 23:38:16,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:38:16,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2094298526] [2021-11-20 23:38:16,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:38:16,346 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:38:16,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:38:16,347 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:38:16,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-20 23:38:16,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:38:16,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 23:38:16,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:38:16,604 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:38:16,605 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:38:16,606 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:38:16,655 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-20 23:38:16,656 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-20 23:38:16,715 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-20 23:38:16,716 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 23 [2021-11-20 23:38:16,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:38:16,841 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:38:16,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:38:16,982 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:38:16,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2094298526] [2021-11-20 23:38:16,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2094298526] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:38:16,982 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:38:16,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-20 23:38:16,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856644885] [2021-11-20 23:38:16,983 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:38:16,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 23:38:16,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:38:16,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 23:38:16,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 23:38:16,985 INFO L87 Difference]: Start difference. First operand 3095 states and 3957 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:38:20,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:38:20,167 INFO L93 Difference]: Finished difference Result 3323 states and 4196 transitions. [2021-11-20 23:38:20,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 23:38:20,167 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-20 23:38:20,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:38:20,170 INFO L225 Difference]: With dead ends: 3323 [2021-11-20 23:38:20,171 INFO L226 Difference]: Without dead ends: 3323 [2021-11-20 23:38:20,171 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-20 23:38:20,171 INFO L933 BasicCegarLoop]: 2062 mSDtfsCounter, 1027 mSDsluCounter, 5179 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1031 SdHoareTripleChecker+Valid, 7241 SdHoareTripleChecker+Invalid, 750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:38:20,172 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1031 Valid, 7241 Invalid, 750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 747 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-11-20 23:38:20,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3323 states. [2021-11-20 23:38:20,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3323 to 3061. [2021-11-20 23:38:20,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3061 states, 2119 states have (on average 1.8291647003303444) internal successors, (3876), 3038 states have internal predecessors, (3876), 23 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (23), 20 states have call predecessors, (23), 23 states have call successors, (23) [2021-11-20 23:38:20,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3061 states to 3061 states and 3922 transitions. [2021-11-20 23:38:20,212 INFO L78 Accepts]: Start accepts. Automaton has 3061 states and 3922 transitions. Word has length 57 [2021-11-20 23:38:20,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:38:20,213 INFO L470 AbstractCegarLoop]: Abstraction has 3061 states and 3922 transitions. [2021-11-20 23:38:20,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:38:20,213 INFO L276 IsEmpty]: Start isEmpty. Operand 3061 states and 3922 transitions. [2021-11-20 23:38:20,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-20 23:38:20,214 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:38:20,214 INFO L514 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] [2021-11-20 23:38:20,232 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-20 23:38:20,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:38:20,428 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr437REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-20 23:38:20,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:38:20,429 INFO L85 PathProgramCache]: Analyzing trace with hash 122106401, now seen corresponding path program 1 times [2021-11-20 23:38:20,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:38:20,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1595349709] [2021-11-20 23:38:20,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:38:20,430 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:38:20,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:38:20,431 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:38:20,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-20 23:38:20,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:38:20,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 23:38:20,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:38:21,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:38:21,120 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:38:21,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:38:21,514 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:38:21,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1595349709] [2021-11-20 23:38:21,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1595349709] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:38:21,514 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:38:21,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-20 23:38:21,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448073006] [2021-11-20 23:38:21,515 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:38:21,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:38:21,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:38:21,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:38:21,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:38:21,516 INFO L87 Difference]: Start difference. First operand 3061 states and 3922 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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) [2021-11-20 23:38:21,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:38:21,714 INFO L93 Difference]: Finished difference Result 4503 states and 5557 transitions. [2021-11-20 23:38:21,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:38:21,715 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 [2021-11-20 23:38:21,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:38:21,721 INFO L225 Difference]: With dead ends: 4503 [2021-11-20 23:38:21,722 INFO L226 Difference]: Without dead ends: 4503 [2021-11-20 23:38:21,722 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:38:21,723 INFO L933 BasicCegarLoop]: 2803 mSDtfsCounter, 1262 mSDsluCounter, 2057 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1270 SdHoareTripleChecker+Valid, 4860 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:38:21,723 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1270 Valid, 4860 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 23:38:21,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4503 states. [2021-11-20 23:38:21,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4503 to 3784. [2021-11-20 23:38:21,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3784 states, 2838 states have (on average 1.7924594785059902) internal successors, (5087), 3754 states have internal predecessors, (5087), 30 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (30), 27 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-20 23:38:21,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3784 states to 3784 states and 5147 transitions. [2021-11-20 23:38:21,789 INFO L78 Accepts]: Start accepts. Automaton has 3784 states and 5147 transitions. Word has length 59 [2021-11-20 23:38:21,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:38:21,789 INFO L470 AbstractCegarLoop]: Abstraction has 3784 states and 5147 transitions. [2021-11-20 23:38:21,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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) [2021-11-20 23:38:21,789 INFO L276 IsEmpty]: Start isEmpty. Operand 3784 states and 5147 transitions. [2021-11-20 23:38:21,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-20 23:38:21,790 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:38:21,790 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:38:21,805 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-11-20 23:38:22,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:38:22,003 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr73REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-20 23:38:22,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:38:22,004 INFO L85 PathProgramCache]: Analyzing trace with hash -45497454, now seen corresponding path program 1 times [2021-11-20 23:38:22,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:38:22,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1348078361] [2021-11-20 23:38:22,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:38:22,005 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:38:22,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:38:22,006 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:38:22,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-20 23:38:22,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:38:22,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 23:38:22,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:38:22,394 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 23:38:22,399 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 23:38:23,045 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 23:38:23,045 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 29 [2021-11-20 23:38:23,074 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-20 23:38:23,074 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 22 [2021-11-20 23:38:23,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:38:23,112 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:38:29,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:38:29,982 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:38:29,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1348078361] [2021-11-20 23:38:29,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1348078361] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:38:29,982 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:38:29,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-20 23:38:29,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937340846] [2021-11-20 23:38:29,983 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:38:29,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 23:38:29,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:38:29,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 23:38:29,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-20 23:38:29,984 INFO L87 Difference]: Start difference. First operand 3784 states and 5147 transitions. Second operand has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 states have internal predecessors, (120), 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) [2021-11-20 23:38:39,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:38:39,718 INFO L93 Difference]: Finished difference Result 5542 states and 7453 transitions. [2021-11-20 23:38:39,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 23:38:39,719 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 states have internal predecessors, (120), 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 62 [2021-11-20 23:38:39,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:38:39,728 INFO L225 Difference]: With dead ends: 5542 [2021-11-20 23:38:39,728 INFO L226 Difference]: Without dead ends: 5542 [2021-11-20 23:38:39,728 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-20 23:38:39,729 INFO L933 BasicCegarLoop]: 2391 mSDtfsCounter, 2433 mSDsluCounter, 2725 mSDsCounter, 0 mSdLazyCounter, 1638 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2441 SdHoareTripleChecker+Valid, 5116 SdHoareTripleChecker+Invalid, 4471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2792 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2021-11-20 23:38:39,729 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2441 Valid, 5116 Invalid, 4471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1638 Invalid, 0 Unknown, 2792 Unchecked, 9.6s Time] [2021-11-20 23:38:39,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5542 states. [2021-11-20 23:38:39,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5542 to 3754. [2021-11-20 23:38:39,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3754 states, 2840 states have (on average 1.7693661971830985) internal successors, (5025), 3724 states have internal predecessors, (5025), 30 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (30), 27 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-20 23:38:39,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3754 states to 3754 states and 5085 transitions. [2021-11-20 23:38:39,790 INFO L78 Accepts]: Start accepts. Automaton has 3754 states and 5085 transitions. Word has length 62 [2021-11-20 23:38:39,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:38:39,790 INFO L470 AbstractCegarLoop]: Abstraction has 3754 states and 5085 transitions. [2021-11-20 23:38:39,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 states have internal predecessors, (120), 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) [2021-11-20 23:38:39,790 INFO L276 IsEmpty]: Start isEmpty. Operand 3754 states and 5085 transitions. [2021-11-20 23:38:39,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-20 23:38:39,791 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:38:39,791 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:38:39,809 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-11-20 23:38:40,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:38:40,005 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr391REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-20 23:38:40,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:38:40,006 INFO L85 PathProgramCache]: Analyzing trace with hash -272070766, now seen corresponding path program 1 times [2021-11-20 23:38:40,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:38:40,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1909855597] [2021-11-20 23:38:40,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:38:40,006 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:38:40,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:38:40,008 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:38:40,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-20 23:38:40,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:38:40,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 23:38:40,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:38:40,488 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 23:38:40,496 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 23:38:41,353 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 23:38:41,354 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 26 [2021-11-20 23:38:41,360 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-20 23:38:41,360 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2021-11-20 23:38:41,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:38:41,397 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:38:46,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:38:46,163 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:38:46,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1909855597] [2021-11-20 23:38:46,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1909855597] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:38:46,164 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:38:46,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-20 23:38:46,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158963615] [2021-11-20 23:38:46,164 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:38:46,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 23:38:46,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:38:46,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 23:38:46,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-20 23:38:46,165 INFO L87 Difference]: Start difference. First operand 3754 states and 5085 transitions. Second operand has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 states have internal predecessors, (120), 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) [2021-11-20 23:38:52,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:38:52,710 INFO L93 Difference]: Finished difference Result 3808 states and 5065 transitions. [2021-11-20 23:38:52,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 23:38:52,711 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 states have internal predecessors, (120), 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 62 [2021-11-20 23:38:52,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:38:52,715 INFO L225 Difference]: With dead ends: 3808 [2021-11-20 23:38:52,715 INFO L226 Difference]: Without dead ends: 3808 [2021-11-20 23:38:52,716 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-20 23:38:52,716 INFO L933 BasicCegarLoop]: 1614 mSDtfsCounter, 1407 mSDsluCounter, 1968 mSDsCounter, 0 mSdLazyCounter, 1052 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1414 SdHoareTripleChecker+Valid, 3582 SdHoareTripleChecker+Invalid, 2620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1531 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2021-11-20 23:38:52,717 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1414 Valid, 3582 Invalid, 2620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1052 Invalid, 0 Unknown, 1531 Unchecked, 6.5s Time] [2021-11-20 23:38:52,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3808 states. [2021-11-20 23:38:52,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3808 to 3770. [2021-11-20 23:38:52,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3770 states, 2887 states have (on average 1.7322480083131278) internal successors, (5001), 3740 states have internal predecessors, (5001), 30 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (30), 27 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-20 23:38:52,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3770 states to 3770 states and 5061 transitions. [2021-11-20 23:38:52,769 INFO L78 Accepts]: Start accepts. Automaton has 3770 states and 5061 transitions. Word has length 62 [2021-11-20 23:38:52,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:38:52,770 INFO L470 AbstractCegarLoop]: Abstraction has 3770 states and 5061 transitions. [2021-11-20 23:38:52,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 states have internal predecessors, (120), 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) [2021-11-20 23:38:52,770 INFO L276 IsEmpty]: Start isEmpty. Operand 3770 states and 5061 transitions. [2021-11-20 23:38:52,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-20 23:38:52,771 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:38:52,771 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:38:52,797 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-11-20 23:38:52,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:38:52,997 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr75REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-20 23:38:52,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:38:52,998 INFO L85 PathProgramCache]: Analyzing trace with hash -773371597, now seen corresponding path program 1 times [2021-11-20 23:38:52,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:38:52,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1505971659] [2021-11-20 23:38:52,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:38:52,999 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:38:52,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:38:53,000 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:38:53,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-20 23:38:53,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:38:53,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 23:38:53,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:38:53,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:38:53,597 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:38:53,673 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-11-20 23:38:54,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:38:54,010 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:38:54,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1505971659] [2021-11-20 23:38:54,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1505971659] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:38:54,010 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:38:54,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-20 23:38:54,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826678606] [2021-11-20 23:38:54,011 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:38:54,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 23:38:54,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:38:54,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 23:38:54,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-20 23:38:54,012 INFO L87 Difference]: Start difference. First operand 3770 states and 5061 transitions. Second operand has 6 states, 5 states have (on average 24.8) internal successors, (124), 6 states have internal predecessors, (124), 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) [2021-11-20 23:38:57,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:38:57,276 INFO L93 Difference]: Finished difference Result 3768 states and 5057 transitions. [2021-11-20 23:38:57,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 23:38:57,277 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 24.8) internal successors, (124), 6 states have internal predecessors, (124), 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 64 [2021-11-20 23:38:57,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:38:57,281 INFO L225 Difference]: With dead ends: 3768 [2021-11-20 23:38:57,282 INFO L226 Difference]: Without dead ends: 3768 [2021-11-20 23:38:57,282 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-20 23:38:57,282 INFO L933 BasicCegarLoop]: 1362 mSDtfsCounter, 6498 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 796 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6508 SdHoareTripleChecker+Valid, 1801 SdHoareTripleChecker+Invalid, 863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:38:57,283 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6508 Valid, 1801 Invalid, 863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 796 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-11-20 23:38:57,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3768 states. [2021-11-20 23:38:57,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3768 to 3768. [2021-11-20 23:38:57,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3768 states, 2887 states have (on average 1.7308624870107379) internal successors, (4997), 3738 states have internal predecessors, (4997), 30 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (30), 27 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-20 23:38:57,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3768 states to 3768 states and 5057 transitions. [2021-11-20 23:38:57,331 INFO L78 Accepts]: Start accepts. Automaton has 3768 states and 5057 transitions. Word has length 64 [2021-11-20 23:38:57,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:38:57,331 INFO L470 AbstractCegarLoop]: Abstraction has 3768 states and 5057 transitions. [2021-11-20 23:38:57,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 24.8) internal successors, (124), 6 states have internal predecessors, (124), 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) [2021-11-20 23:38:57,332 INFO L276 IsEmpty]: Start isEmpty. Operand 3768 states and 5057 transitions. [2021-11-20 23:38:57,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-20 23:38:57,332 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:38:57,333 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:38:57,349 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-11-20 23:38:57,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:38:57,546 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr393REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-20 23:38:57,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:38:57,546 INFO L85 PathProgramCache]: Analyzing trace with hash 533035699, now seen corresponding path program 1 times [2021-11-20 23:38:57,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:38:57,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1903898613] [2021-11-20 23:38:57,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:38:57,547 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:38:57,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:38:57,548 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:38:57,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-11-20 23:38:57,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:38:57,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 23:38:57,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:38:58,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:38:58,062 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:38:58,129 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-11-20 23:38:58,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:38:58,427 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:38:58,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1903898613] [2021-11-20 23:38:58,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1903898613] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:38:58,428 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:38:58,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-20 23:38:58,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531989809] [2021-11-20 23:38:58,428 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:38:58,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 23:38:58,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:38:58,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 23:38:58,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-20 23:38:58,429 INFO L87 Difference]: Start difference. First operand 3768 states and 5057 transitions. Second operand has 6 states, 5 states have (on average 24.8) internal successors, (124), 6 states have internal predecessors, (124), 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) [2021-11-20 23:39:03,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:39:03,810 INFO L93 Difference]: Finished difference Result 3767 states and 5043 transitions. [2021-11-20 23:39:03,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 23:39:03,811 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 24.8) internal successors, (124), 6 states have internal predecessors, (124), 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 64 [2021-11-20 23:39:03,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:39:03,814 INFO L225 Difference]: With dead ends: 3767 [2021-11-20 23:39:03,814 INFO L226 Difference]: Without dead ends: 3767 [2021-11-20 23:39:03,815 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-20 23:39:03,815 INFO L933 BasicCegarLoop]: 1456 mSDtfsCounter, 1673 mSDsluCounter, 1596 mSDsCounter, 0 mSdLazyCounter, 1398 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1683 SdHoareTripleChecker+Valid, 3052 SdHoareTripleChecker+Invalid, 1416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2021-11-20 23:39:03,815 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1683 Valid, 3052 Invalid, 1416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1398 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2021-11-20 23:39:03,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3767 states. [2021-11-20 23:39:03,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3767 to 3715. [2021-11-20 23:39:03,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3715 states, 2840 states have (on average 1.7376760563380282) internal successors, (4935), 3685 states have internal predecessors, (4935), 30 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (30), 27 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-20 23:39:03,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3715 states to 3715 states and 4995 transitions. [2021-11-20 23:39:03,856 INFO L78 Accepts]: Start accepts. Automaton has 3715 states and 4995 transitions. Word has length 64 [2021-11-20 23:39:03,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:39:03,856 INFO L470 AbstractCegarLoop]: Abstraction has 3715 states and 4995 transitions. [2021-11-20 23:39:03,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 24.8) internal successors, (124), 6 states have internal predecessors, (124), 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) [2021-11-20 23:39:03,856 INFO L276 IsEmpty]: Start isEmpty. Operand 3715 states and 4995 transitions. [2021-11-20 23:39:03,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-20 23:39:03,857 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:39:03,857 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:39:03,866 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-11-20 23:39:04,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:39:04,058 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-20 23:39:04,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:39:04,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1308391416, now seen corresponding path program 1 times [2021-11-20 23:39:04,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:39:04,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [279587954] [2021-11-20 23:39:04,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:39:04,059 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:39:04,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:39:04,060 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:39:04,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-11-20 23:39:04,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:39:04,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 23:39:04,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:39:04,395 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 23:39:04,407 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-20 23:39:04,438 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-20 23:39:04,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:39:04,450 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:39:04,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:39:04,558 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:39:04,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [279587954] [2021-11-20 23:39:04,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [279587954] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:39:04,559 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:39:04,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-20 23:39:04,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612905486] [2021-11-20 23:39:04,559 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:39:04,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:39:04,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:39:04,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:39:04,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:39:04,560 INFO L87 Difference]: Start difference. First operand 3715 states and 4995 transitions. Second operand has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 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) [2021-11-20 23:39:10,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:39:10,455 INFO L93 Difference]: Finished difference Result 3714 states and 4993 transitions. [2021-11-20 23:39:10,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 23:39:10,455 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 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 67 [2021-11-20 23:39:10,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:39:10,459 INFO L225 Difference]: With dead ends: 3714 [2021-11-20 23:39:10,459 INFO L226 Difference]: Without dead ends: 3714 [2021-11-20 23:39:10,459 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 126 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-20 23:39:10,460 INFO L933 BasicCegarLoop]: 2113 mSDtfsCounter, 4 mSDsluCounter, 3448 mSDsCounter, 0 mSdLazyCounter, 2896 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 5561 SdHoareTripleChecker+Invalid, 2897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2021-11-20 23:39:10,460 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 5561 Invalid, 2897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2896 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2021-11-20 23:39:10,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3714 states. [2021-11-20 23:39:10,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3714 to 3714. [2021-11-20 23:39:10,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3714 states, 2840 states have (on average 1.7369718309859155) internal successors, (4933), 3684 states have internal predecessors, (4933), 30 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (30), 27 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-20 23:39:10,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3714 states to 3714 states and 4993 transitions. [2021-11-20 23:39:10,491 INFO L78 Accepts]: Start accepts. Automaton has 3714 states and 4993 transitions. Word has length 67 [2021-11-20 23:39:10,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:39:10,491 INFO L470 AbstractCegarLoop]: Abstraction has 3714 states and 4993 transitions. [2021-11-20 23:39:10,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 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) [2021-11-20 23:39:10,492 INFO L276 IsEmpty]: Start isEmpty. Operand 3714 states and 4993 transitions. [2021-11-20 23:39:10,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-20 23:39:10,492 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:39:10,492 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:39:10,504 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-11-20 23:39:10,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:39:10,693 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr79REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-20 23:39:10,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:39:10,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1308391415, now seen corresponding path program 1 times [2021-11-20 23:39:10,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:39:10,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [444016683] [2021-11-20 23:39:10,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:39:10,694 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:39:10,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:39:10,695 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:39:10,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-11-20 23:39:10,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:39:10,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 23:39:10,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:39:11,062 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 23:39:11,086 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 23:39:11,096 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-11-20 23:39:11,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2021-11-20 23:39:11,170 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-20 23:39:11,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:39:11,199 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:39:11,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:39:11,514 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:39:11,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [444016683] [2021-11-20 23:39:11,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [444016683] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:39:11,515 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:39:11,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-20 23:39:11,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777853479] [2021-11-20 23:39:11,515 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:39:11,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 23:39:11,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:39:11,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 23:39:11,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:39:11,516 INFO L87 Difference]: Start difference. First operand 3714 states and 4993 transitions. Second operand has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 8 states have internal predecessors, (74), 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) [2021-11-20 23:39:33,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:39:33,439 INFO L93 Difference]: Finished difference Result 3713 states and 4991 transitions. [2021-11-20 23:39:33,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 23:39:33,440 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 8 states have internal predecessors, (74), 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 67 [2021-11-20 23:39:33,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:39:33,445 INFO L225 Difference]: With dead ends: 3713 [2021-11-20 23:39:33,445 INFO L226 Difference]: Without dead ends: 3713 [2021-11-20 23:39:33,445 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-20 23:39:33,445 INFO L933 BasicCegarLoop]: 2113 mSDtfsCounter, 3 mSDsluCounter, 5779 mSDsCounter, 0 mSdLazyCounter, 4791 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 7892 SdHoareTripleChecker+Invalid, 4792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.8s IncrementalHoareTripleChecker+Time [2021-11-20 23:39:33,446 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 7892 Invalid, 4792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4791 Invalid, 0 Unknown, 0 Unchecked, 21.8s Time] [2021-11-20 23:39:33,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3713 states. [2021-11-20 23:39:33,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3713 to 3713. [2021-11-20 23:39:33,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3713 states, 2838 states have (on average 1.7374911909795632) internal successors, (4931), 3683 states have internal predecessors, (4931), 30 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (30), 27 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-20 23:39:33,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3713 states to 3713 states and 4991 transitions. [2021-11-20 23:39:33,485 INFO L78 Accepts]: Start accepts. Automaton has 3713 states and 4991 transitions. Word has length 67 [2021-11-20 23:39:33,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:39:33,485 INFO L470 AbstractCegarLoop]: Abstraction has 3713 states and 4991 transitions. [2021-11-20 23:39:33,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 8 states have internal predecessors, (74), 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) [2021-11-20 23:39:33,485 INFO L276 IsEmpty]: Start isEmpty. Operand 3713 states and 4991 transitions. [2021-11-20 23:39:33,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-20 23:39:33,486 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:39:33,486 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:39:33,510 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-11-20 23:39:33,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:39:33,700 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr396REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-20 23:39:33,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:39:33,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1173564532, now seen corresponding path program 1 times [2021-11-20 23:39:33,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:39:33,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1804237392] [2021-11-20 23:39:33,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:39:33,702 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:39:33,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:39:33,703 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:39:33,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-11-20 23:39:33,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:39:33,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 23:39:33,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:39:34,026 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 23:39:34,041 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-20 23:39:34,100 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-20 23:39:34,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:39:34,112 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:39:34,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:39:34,214 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:39:34,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1804237392] [2021-11-20 23:39:34,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1804237392] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:39:34,215 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:39:34,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-20 23:39:34,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477971980] [2021-11-20 23:39:34,215 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:39:34,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:39:34,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:39:34,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:39:34,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:39:34,216 INFO L87 Difference]: Start difference. First operand 3713 states and 4991 transitions. Second operand has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 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) [2021-11-20 23:39:40,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:39:40,275 INFO L93 Difference]: Finished difference Result 3712 states and 4988 transitions. [2021-11-20 23:39:40,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 23:39:40,276 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 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 67 [2021-11-20 23:39:40,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:39:40,280 INFO L225 Difference]: With dead ends: 3712 [2021-11-20 23:39:40,281 INFO L226 Difference]: Without dead ends: 3712 [2021-11-20 23:39:40,281 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 127 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-20 23:39:40,282 INFO L933 BasicCegarLoop]: 2111 mSDtfsCounter, 4 mSDsluCounter, 3445 mSDsCounter, 0 mSdLazyCounter, 2893 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 5556 SdHoareTripleChecker+Invalid, 2894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:39:40,282 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 5556 Invalid, 2894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2893 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2021-11-20 23:39:40,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3712 states. [2021-11-20 23:39:40,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3712 to 3712. [2021-11-20 23:39:40,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3712 states, 2838 states have (on average 1.7364341085271318) internal successors, (4928), 3682 states have internal predecessors, (4928), 30 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (30), 27 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-20 23:39:40,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3712 states to 3712 states and 4988 transitions. [2021-11-20 23:39:40,328 INFO L78 Accepts]: Start accepts. Automaton has 3712 states and 4988 transitions. Word has length 67 [2021-11-20 23:39:40,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:39:40,329 INFO L470 AbstractCegarLoop]: Abstraction has 3712 states and 4988 transitions. [2021-11-20 23:39:40,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 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) [2021-11-20 23:39:40,329 INFO L276 IsEmpty]: Start isEmpty. Operand 3712 states and 4988 transitions. [2021-11-20 23:39:40,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-20 23:39:40,330 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:39:40,330 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:39:40,355 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-11-20 23:39:40,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:39:40,553 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr397REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-20 23:39:40,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:39:40,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1173564533, now seen corresponding path program 1 times [2021-11-20 23:39:40,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:39:40,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [878593695] [2021-11-20 23:39:40,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:39:40,554 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:39:40,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:39:40,555 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:39:40,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-11-20 23:39:40,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:39:40,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 23:39:40,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:39:40,957 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 23:39:40,977 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 23:39:40,984 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-11-20 23:39:41,039 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2021-11-20 23:39:41,042 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-20 23:39:41,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:39:41,070 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:39:41,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:39:41,361 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:39:41,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [878593695] [2021-11-20 23:39:41,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [878593695] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:39:41,361 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:39:41,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-20 23:39:41,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594230572] [2021-11-20 23:39:41,362 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:39:41,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 23:39:41,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:39:41,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 23:39:41,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:39:41,363 INFO L87 Difference]: Start difference. First operand 3712 states and 4988 transitions. Second operand has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 8 states have internal predecessors, (74), 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) [2021-11-20 23:39:57,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:39:57,159 INFO L93 Difference]: Finished difference Result 3711 states and 4985 transitions. [2021-11-20 23:39:57,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 23:39:57,160 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 8 states have internal predecessors, (74), 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 67 [2021-11-20 23:39:57,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:39:57,167 INFO L225 Difference]: With dead ends: 3711 [2021-11-20 23:39:57,167 INFO L226 Difference]: Without dead ends: 3711 [2021-11-20 23:39:57,167 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-20 23:39:57,168 INFO L933 BasicCegarLoop]: 2111 mSDtfsCounter, 4 mSDsluCounter, 3456 mSDsCounter, 0 mSdLazyCounter, 2880 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 5567 SdHoareTripleChecker+Invalid, 2882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.7s IncrementalHoareTripleChecker+Time [2021-11-20 23:39:57,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 5567 Invalid, 2882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2880 Invalid, 0 Unknown, 0 Unchecked, 15.7s Time] [2021-11-20 23:39:57,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3711 states. [2021-11-20 23:39:57,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3711 to 3711. [2021-11-20 23:39:57,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3711 states, 2835 states have (on average 1.7372134038800706) internal successors, (4925), 3681 states have internal predecessors, (4925), 30 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (30), 27 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-20 23:39:57,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3711 states to 3711 states and 4985 transitions. [2021-11-20 23:39:57,216 INFO L78 Accepts]: Start accepts. Automaton has 3711 states and 4985 transitions. Word has length 67 [2021-11-20 23:39:57,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:39:57,216 INFO L470 AbstractCegarLoop]: Abstraction has 3711 states and 4985 transitions. [2021-11-20 23:39:57,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 8 states have internal predecessors, (74), 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) [2021-11-20 23:39:57,217 INFO L276 IsEmpty]: Start isEmpty. Operand 3711 states and 4985 transitions. [2021-11-20 23:39:57,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-20 23:39:57,218 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:39:57,218 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:39:57,232 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (31)] Ended with exit code 0 [2021-11-20 23:39:57,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:39:57,432 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-20 23:39:57,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:39:57,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1243544783, now seen corresponding path program 1 times [2021-11-20 23:39:57,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:39:57,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [259942222] [2021-11-20 23:39:57,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:39:57,434 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:39:57,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:39:57,435 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:39:57,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-11-20 23:39:57,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:39:57,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 23:39:57,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:39:57,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:39:57,840 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:39:58,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:39:58,018 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:39:58,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [259942222] [2021-11-20 23:39:58,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [259942222] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:39:58,018 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:39:58,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-20 23:39:58,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350325741] [2021-11-20 23:39:58,018 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:39:58,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 23:39:58,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:39:58,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 23:39:58,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-20 23:39:58,019 INFO L87 Difference]: Start difference. First operand 3711 states and 4985 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 23:39:58,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:39:58,151 INFO L93 Difference]: Finished difference Result 3721 states and 5001 transitions. [2021-11-20 23:39:58,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 23:39:58,151 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 75 [2021-11-20 23:39:58,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:39:58,159 INFO L225 Difference]: With dead ends: 3721 [2021-11-20 23:39:58,159 INFO L226 Difference]: Without dead ends: 3721 [2021-11-20 23:39:58,159 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:39:58,160 INFO L933 BasicCegarLoop]: 2109 mSDtfsCounter, 9 mSDsluCounter, 4211 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 6320 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:39:58,160 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 6320 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 23:39:58,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3721 states. [2021-11-20 23:39:58,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3721 to 3721. [2021-11-20 23:39:58,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3721 states, 2843 states have (on average 1.736545902215969) internal successors, (4937), 3690 states have internal predecessors, (4937), 30 states have call successors, (30), 4 states have call predecessors, (30), 5 states have return successors, (34), 27 states have call predecessors, (34), 30 states have call successors, (34) [2021-11-20 23:39:58,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3721 states to 3721 states and 5001 transitions. [2021-11-20 23:39:58,209 INFO L78 Accepts]: Start accepts. Automaton has 3721 states and 5001 transitions. Word has length 75 [2021-11-20 23:39:58,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:39:58,209 INFO L470 AbstractCegarLoop]: Abstraction has 3721 states and 5001 transitions. [2021-11-20 23:39:58,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 23:39:58,210 INFO L276 IsEmpty]: Start isEmpty. Operand 3721 states and 5001 transitions. [2021-11-20 23:39:58,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-20 23:39:58,211 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:39:58,211 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:39:58,225 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-11-20 23:39:58,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:39:58,429 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-20 23:39:58,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:39:58,430 INFO L85 PathProgramCache]: Analyzing trace with hash 520759535, now seen corresponding path program 1 times [2021-11-20 23:39:58,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:39:58,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1335113910] [2021-11-20 23:39:58,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:39:58,430 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:39:58,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:39:58,431 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:39:58,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-11-20 23:39:58,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:39:58,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 23:39:58,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:39:58,865 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:39:58,865 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:39:59,126 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:39:59,127 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:39:59,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1335113910] [2021-11-20 23:39:59,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1335113910] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:39:59,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1485580607] [2021-11-20 23:39:59,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:39:59,127 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-20 23:39:59,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-20 23:39:59,129 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-20 23:39:59,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (34)] Waiting until timeout for monitored process [2021-11-20 23:39:59,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:39:59,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 23:39:59,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:39:59,608 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:39:59,608 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:39:59,754 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:39:59,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1485580607] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:39:59,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1441457091] [2021-11-20 23:39:59,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:39:59,755 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:39:59,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:39:59,764 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:39:59,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-11-20 23:39:59,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:39:59,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 23:40:00,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:40:00,153 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:40:00,153 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:40:00,380 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:40:00,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1441457091] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:40:00,380 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-20 23:40:00,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 14 [2021-11-20 23:40:00,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147032937] [2021-11-20 23:40:00,381 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-20 23:40:00,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 23:40:00,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:40:00,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 23:40:00,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-11-20 23:40:00,382 INFO L87 Difference]: Start difference. First operand 3721 states and 5001 transitions. Second operand has 14 states, 14 states have (on average 6.142857142857143) internal successors, (86), 14 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 23:40:00,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:40:00,920 INFO L93 Difference]: Finished difference Result 3735 states and 5021 transitions. [2021-11-20 23:40:00,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-20 23:40:00,933 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.142857142857143) internal successors, (86), 14 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 77 [2021-11-20 23:40:00,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:40:00,941 INFO L225 Difference]: With dead ends: 3735 [2021-11-20 23:40:00,941 INFO L226 Difference]: Without dead ends: 3729 [2021-11-20 23:40:00,942 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 465 GetRequests, 444 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=188, Invalid=318, Unknown=0, NotChecked=0, Total=506 [2021-11-20 23:40:00,943 INFO L933 BasicCegarLoop]: 2109 mSDtfsCounter, 56 mSDsluCounter, 6319 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 8428 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 23:40:00,943 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 8428 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 23:40:00,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3729 states. [2021-11-20 23:40:00,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3729 to 3727. [2021-11-20 23:40:00,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3727 states, 2849 states have (on average 1.7353457353457353) internal successors, (4944), 3696 states have internal predecessors, (4944), 30 states have call successors, (30), 4 states have call predecessors, (30), 5 states have return successors, (34), 27 states have call predecessors, (34), 30 states have call successors, (34) [2021-11-20 23:40:00,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3727 states to 3727 states and 5008 transitions. [2021-11-20 23:40:00,993 INFO L78 Accepts]: Start accepts. Automaton has 3727 states and 5008 transitions. Word has length 77 [2021-11-20 23:40:00,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:40:00,993 INFO L470 AbstractCegarLoop]: Abstraction has 3727 states and 5008 transitions. [2021-11-20 23:40:00,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.142857142857143) internal successors, (86), 14 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 23:40:00,994 INFO L276 IsEmpty]: Start isEmpty. Operand 3727 states and 5008 transitions. [2021-11-20 23:40:00,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-20 23:40:00,995 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:40:00,995 INFO L514 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:40:01,001 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (34)] Ended with exit code 0 [2021-11-20 23:40:01,222 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2021-11-20 23:40:01,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2021-11-20 23:40:01,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:40:01,599 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-20 23:40:01,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:40:01,600 INFO L85 PathProgramCache]: Analyzing trace with hash 991095087, now seen corresponding path program 2 times [2021-11-20 23:40:01,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:40:01,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1856159719] [2021-11-20 23:40:01,600 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 23:40:01,600 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:40:01,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:40:01,601 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:40:01,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-11-20 23:40:02,100 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 23:40:02,100 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 23:40:02,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-20 23:40:02,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:40:02,332 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:40:02,332 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:40:02,863 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:40:02,863 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:40:02,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1856159719] [2021-11-20 23:40:02,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1856159719] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:40:02,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [257363357] [2021-11-20 23:40:02,863 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 23:40:02,863 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-20 23:40:02,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-20 23:40:02,864 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-20 23:40:02,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (37)] Waiting until timeout for monitored process [2021-11-20 23:40:03,754 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 23:40:03,754 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 23:40:03,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-20 23:40:03,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:40:03,892 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:40:03,892 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:40:04,105 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:40:04,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [257363357] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:40:04,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1126542100] [2021-11-20 23:40:04,105 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 23:40:04,105 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:40:04,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:40:04,106 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:40:04,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e5f63ea-3a5c-4a10-ab35-991bdefcaa7f/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2021-11-20 23:40:18,467 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 23:40:18,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 23:40:18,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-20 23:40:18,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:40:18,499 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 23:40:18,776 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 23:40:18,776 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 14 [2021-11-20 23:40:18,830 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-20 23:42:13,430 WARN L227 SmtUtils]: Spent 28.75s on a formula simplification. DAG size of input: 114 DAG size of output: 34 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-20 23:42:13,430 INFO L354 Elim1Store]: treesize reduction 884, result has 5.9 percent of original size [2021-11-20 23:42:13,431 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 75 treesize of output 79 [2021-11-20 23:42:14,060 INFO L354 Elim1Store]: treesize reduction 276, result has 0.4 percent of original size [2021-11-20 23:42:14,060 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 125 treesize of output 38 [2021-11-20 23:42:14,185 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 6 refuted. 15 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:42:14,186 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:42:15,828 INFO L354 Elim1Store]: treesize reduction 5, result has 89.8 percent of original size [2021-11-20 23:42:15,828 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 62 [2021-11-20 23:42:50,835 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr540| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr540_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_105| (_ BitVec 32))) (not (= (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_105| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_103| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_108| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_104| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_106| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_109| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)) |c_#Ultimate.C_memset_#ptr.base|))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr540|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))))))) (_ bv1 1))))) is different from true [2021-11-20 23:47:00,530 INFO L354 Elim1Store]: treesize reduction 5, result has 89.8 percent of original size [2021-11-20 23:47:00,531 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 108 treesize of output 107 [2021-11-20 23:47:04,125 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_120| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr540| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_114| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_112| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_118| (_ BitVec 32)) (|#Ultimate.C_memset_#ptr.offset| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_116| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr540_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_105| (_ BitVec 32))) (not (= (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_105| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_103| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_108| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_104| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_106| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_109| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)) |c_#Ultimate.C_memset_#ptr.base|))) (= (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr540|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_120| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_118| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_116| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_114| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_112| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)) |c_#Ultimate.C_memset_#ptr.base|))) is different from false [2021-11-20 23:47:29,654 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 15 times theorem prover too weak. 0 trivial. 6 not checked. [2021-11-20 23:47:29,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1126542100] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:47:29,654 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-20 23:47:29,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10, 15, 15] total 45 [2021-11-20 23:47:29,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891539836] [2021-11-20 23:47:29,655 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-20 23:47:29,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2021-11-20 23:47:29,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:47:29,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-11-20 23:47:29,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=1472, Unknown=180, NotChecked=166, Total=1980 [2021-11-20 23:47:29,658 INFO L87 Difference]: Start difference. First operand 3727 states and 5008 transitions. Second operand has 45 states, 43 states have (on average 5.511627906976744) internal successors, (237), 43 states have internal predecessors, (237), 3 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-20 23:47:36,211 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_120| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr540| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_114| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_112| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_118| (_ BitVec 32)) (|#Ultimate.C_memset_#ptr.offset| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_116| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr540_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_105| (_ BitVec 32))) (not (= (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_105| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_103| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_108| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_104| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_106| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_109| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)) |c_#Ultimate.C_memset_#ptr.base|))) (= (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr540|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_120| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_118| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_116| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_114| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_112| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)) |c_#Ultimate.C_memset_#ptr.base|))) (= |c_old(#memory_$Pointer$.base)| |c_#memory_$Pointer$.base|)) is different from false [2021-11-20 23:49:16,070 WARN L838 $PredicateComparison]: unable to prove that (and (= (_ bv0 1) (bvadd (bvneg (select |c_#valid| |c_#Ultimate.C_memset_#ptr.base|)) (_ bv1 1))) (= (_ bv1 32) |c_#Ultimate.C_memset_#t~loopctr540|) (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr540| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_114| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_112| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_118| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_116| (_ BitVec 32))) (or (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr540|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr540_118|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr540_116|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr540_114|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr540_112|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))))))))) (exists ((|v_#Ultimate.C_memset_#t~loopctr540_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_105| (_ BitVec 32))) (not (= (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_105| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_103| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_108| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_104| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_106| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_109| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)) |c_#Ultimate.C_memset_#ptr.base|))))) (exists ((|v_#Ultimate.C_memset_#t~loopctr540_83| (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_83| |c_#Ultimate.C_memset_#ptr.offset|) (_ bv0 32))) |c_#memory_$Pointer$.base|))) is different from false